Method and device for determining radiation heat transfer in special-shaped rooms

Abstract

The present invention provides a method and device for determining radiation heat transfer in a special-shaped room, which can be applied to the field of radiation heat transfer and intelligent building technology. The determination method includes obtaining physical property information, condition information, virtual wall information and temperature information corresponding to the special-shaped room, the special-shaped room is a polygonal room or curved space with a special-shaped closed cavity and radiation shielding, and the virtual wall information represents the wall information after the original wall information of the special-shaped room is processed; a heat transfer model is constructed based on the physical property information, condition information, virtual wall information and temperature information, and the heat transfer model includes a surface radiation model, a floor model and an air-wall model; the surface radiation model, the floor model and the air-wall model are recycled to determine the heat transfer result corresponding to the special-shaped room at the target time. The method improves the accuracy and efficiency of the radiation heat transfer prediction for the special-shaped room.

Description

Technical Field

[0001] The invention relates to the technical field of radiation heat transfer and intelligent building, and in particular to a method and device for determining radiation heat transfer of a special-shaped room. Background Art

[0002] In building heating, the heating system heats the indoor space through floor radiation, which can provide uniform and comfortable temperature distribution, avoiding the local temperature difference and small indoor temperature change caused by traditional radiators and air conditioning heating. The operating temperature of the heating system is usually low, and it can be used in combination with renewable energy sources such as heat pumps and solar energy to further improve the energy utilization rate of the system and reduce carbon emissions. The heating system is widely used due to its own energy-saving, high efficiency and comfort advantages. The analysis methods for radiation heat transfer of heating systems in related technologies mainly include: using heat transfer models based on the rectangular room assumption to perform radiation heat transfer analysis; directly calculating the radiation heat transfer according to the convective heat transfer formula, and taking the sum of the convective heat transfer coefficient and the radiation heat transfer coefficient as the comprehensive heat transfer coefficient.

[0003] The analysis methods for radiant heat transfer of heating systems in related technologies have the following defects: the traditional method based on the rectangular room assumption is not applicable to the geometric characteristics of non-rectangular or irregular rooms, resulting in inaccurate heat distribution calculations, affecting the design effect and the actual heat transfer process; directly taking the sum of the convective heat transfer coefficient and the radiation heat transfer coefficient as the comprehensive heat transfer coefficient makes it difficult to truly reflect the heat transfer process, resulting in low accuracy and efficiency of heat distribution and energy efficiency evaluation results. Summary of the invention

[0004] In view of the above problems, the present invention provides a method, device, equipment, medium and product for determining radiation heat transfer in an irregular-shaped room.

[0005] According to a first aspect of the present invention, a method for determining radiation heat transfer in an irregular-shaped room is provided, comprising: obtaining physical property information, condition information, virtual wall information and temperature information corresponding to the irregular-shaped room, wherein the irregular-shaped room is a polygonal room or curved space with an irregular closed cavity and radiation shielding, and the virtual wall information represents the wall information after processing the original wall information of the irregular-shaped room; constructing a heat transfer model based on the physical property information, condition information, virtual wall information and temperature information, wherein the heat transfer model includes a surface radiation model, a floor model and an air-wall model; and recycling the surface radiation model, the floor model and the air-wall model to determine the heat transfer result corresponding to the irregular-shaped room at a target time, wherein the heat transfer result meets a preset condition, and the heat transfer result includes a radiation heat transfer result, a convection heat transfer result and an indoor temperature.

[0006] A second aspect of the present invention provides a device for determining radiation heat transfer in an irregular room, comprising: an information acquisition module, used to acquire physical property information, condition information, virtual wall information and temperature information corresponding to the irregular room, wherein the irregular room is a polygonal room or curved space with an irregular closed cavity and radiation shielding, and the virtual wall information represents the wall information after processing the original wall information of the irregular room; a heat transfer model construction module, used to construct a heat transfer model based on the physical property information, condition information, virtual wall information and temperature information, wherein the heat transfer model includes a surface radiation model, a floor model and an air-wall model; a heat transfer result determination module, used to recycle the surface radiation model, the floor model and the air-wall model to determine the heat transfer result corresponding to the irregular room at a target time, wherein the heat transfer result meets the preset conditions, and the heat transfer result includes the radiation heat exchange result, the convection heat exchange result and the indoor temperature.

[0007] A third aspect of the present invention provides an electronic device, comprising: one or more processors; a memory for storing one or more computer programs, wherein the one or more processors execute the one or more computer programs to implement the steps of the above method.

[0008] The fourth aspect of the present invention further provides a computer-readable storage medium on which a computer program or instruction is stored, and the steps of the above method are implemented when the above computer program or instruction is executed by a processor.

[0009] The fifth aspect of the present invention also provides a computer program product, including a computer program or instructions, which implement the steps of the above method when executed by a processor.

[0010] According to the method, device, equipment, medium and product for determining radiation heat transfer in a special-shaped room provided by the present invention, the radiation heat transfer process of the special-shaped room can be simulated based on multi-dimensional information (including physical property information, condition information, virtual wall information and temperature information) corresponding to the special-shaped room and a heat transfer model to obtain a heat transfer result. Since the virtual wall information realizes the processing and conversion of the original wall of the special-shaped room, the information quality and integrity of the input information are improved, the heat transfer process in the room is reflected more realistically, and the heat transfer prediction of the complex-shaped special-shaped room is satisfied; since the heat transfer result is obtained after iterating by cyclically utilizing multiple heat transfer models based on preset conditions, the accuracy and efficiency of the radiation heat transfer prediction for the special-shaped room are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above contents and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0012] Figure 1An application scenario diagram showing a method, device, equipment, medium and product for determining radiation heat transfer in a special-shaped room according to an embodiment of the present invention is shown;

[0013] Figure 2 A flow chart showing a method for determining radiation heat transfer in a special-shaped room according to an embodiment of the present invention is shown;

[0014] Figure 3 An example schematic diagram of a process of splitting a special-shaped room according to an embodiment of the present invention is shown;

[0015] Figure 4 A schematic diagram showing mutually perpendicular inner wall surfaces according to an embodiment of the present invention is shown;

[0016] Figure 5 A schematic diagram showing mutually parallel inner wall surfaces according to an embodiment of the present invention is shown;

[0017] Figure 6 A schematic diagram showing an example of inner wall radiation heat exchange according to an embodiment of the present invention;

[0018] Figure 7 A schematic structural diagram of a heating system according to an embodiment of the present invention is shown;

[0019] Figure 8 A schematic diagram of a room plan according to an embodiment of the present invention is shown;

[0020] Fig. 9 A structural block diagram of a device for determining radiation heat transfer in a special-shaped room according to an embodiment of the present invention is shown;

[0021] Fig.10 A block diagram of an electronic device suitable for implementing a method for determining radiation heat transfer in a special-shaped room according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0022] Below, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of embodiments of the present invention. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of concepts of the present invention.

[0023] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0024] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0025] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0026] In the related technology, for the analysis of radiant heat transfer of heating systems, the traditional method based on the rectangular room assumption is not applicable to the geometric characteristics of non-rectangular or irregular rooms, resulting in inaccurate heat distribution calculations, affecting the design effect and the actual heat transfer process; directly taking the sum of the convective heat transfer coefficient and the radiation heat transfer coefficient as the comprehensive heat transfer coefficient is difficult to truly reflect the heat transfer process, resulting in low accuracy and efficiency of heat distribution and energy efficiency evaluation results.

[0027] In view of this, the present invention can simulate the radiation heat transfer process of the special-shaped room based on the multi-dimensional information corresponding to the special-shaped room (including physical property information, condition information, virtual wall information and temperature information) and the heat transfer model to obtain the heat transfer result. Since the virtual wall information realizes the processing and conversion of the original wall of the special-shaped room, the information quality and integrity of the input information are improved, and the heat transfer process in the room is more realistically reflected, which meets the heat transfer prediction of the complex-shaped special-shaped room; since the heat transfer result is obtained after iterating by cyclically utilizing multiple heat transfer models based on preset conditions, the accuracy and efficiency of the radiation heat transfer prediction for the special-shaped room are improved.

[0028] An embodiment of the present invention provides a method for determining radiation heat transfer of an irregular-shaped room, comprising: obtaining physical property information, condition information, virtual wall information and temperature information corresponding to the irregular-shaped room, wherein the virtual wall information represents the wall information after processing the original wall information of the irregular-shaped room; determining the heat transfer result corresponding to the irregular-shaped room; wherein the heat transfer model is determined by the following operations: constructing an initial heat transfer model based on multiple sample information corresponding to the sample irregular-shaped room, wherein the initial heat transfer model includes an initial surface radiation model, an initial floor model and an initial air and wall model; cyclically utilizing the initial heat transfer model and multiple sample information to determine the heat transfer information corresponding to the sample irregular-shaped room at a target time, until the heat transfer result meets a preset condition, and obtaining the heat transfer model, wherein the heat transfer information includes radiation heat transfer results, convection heat transfer results and indoor temperature.

[0029] Figure 1 An application scenario diagram of a method, device, equipment, medium, and product for determining radiation heat transfer in a special-shaped room according to an embodiment of the present invention is shown.

[0030] like Figure 1 As shown, the application scenario according to this embodiment may include a medium providing a communication link between a first terminal device 101, a second terminal device 102, a third terminal device 103, a network 104, and a server 105. The network 104 is used to provide a medium for a communication link between the first terminal device 101, the second terminal device 102, the third terminal device 103, and the server 105. The network 104 may include various connection types, such as wired, wireless communication links, or optical fiber cables, etc.

[0031] The user can use the first terminal device 101, the second terminal device 102, and the third terminal device 103 to interact with the server 105 through the network 104 to receive or send messages, etc. Various communication client applications can be installed on the first terminal device 101, the second terminal device 102, and the third terminal device 103, such as shopping applications, web browser applications, search applications, instant messaging tools, email clients, social platform software, etc. (only for example).

[0032] The first terminal device 101, the second terminal device 102, and the third terminal device 103 may be various electronic devices having display screens and supporting web browsing, including but not limited to smart phones, tablet computers, laptop computers, desktop computers, and the like.

[0033] The server 105 may be a server that provides various services, such as a background management server (only as an example) that provides support for websites browsed by users using the first terminal device 101, the second terminal device 102, and the third terminal device 103. The background management server may analyze and process the received data such as user requests, and feed back the processing results (such as web pages, information, or data obtained or generated according to user requests) to the terminal device.

[0034] It should be noted that the method for determining radiant heat transfer in a special-shaped room provided in the embodiment of the present invention can generally be executed by the server 105. Accordingly, the device for determining radiant heat transfer in a special-shaped room provided in the embodiment of the present invention can generally be set in the server 105. The method for determining radiant heat transfer in a special-shaped room provided in the embodiment of the present invention can also be executed by a server or server cluster that is different from the server 105 and can communicate with the first terminal device 101, the second terminal device 102, the third terminal device 103 and / or the server 105. Accordingly, the device for determining radiant heat transfer in a special-shaped room provided in the embodiment of the present invention can also be set in a server or server cluster that is different from the server 105 and can communicate with the first terminal device 101, the second terminal device 102, the third terminal device 103 and / or the server 105.

[0035] It should be understood that Figure 1 The number of terminal devices, networks and servers in the embodiment is only for illustration. Any number of terminal devices, networks and servers may be provided according to implementation requirements.

[0036] The following will be based on Figure 1 The scene described by Figure 2~Figure 8 The method for determining the radiation heat transfer of a special-shaped room in the disclosed embodiment is described in detail.

[0037] Figure 2 A flow chart of a method for determining radiation heat transfer in a special-shaped room according to an embodiment of the present invention is shown.

[0038] like Figure 2 As shown, the method for determining radiation heat transfer of a special-shaped room of this embodiment includes operations S210 to S230.

[0039] In operation S210, physical property information, condition information, virtual wall information and temperature information corresponding to the irregular-shaped room are obtained, wherein the irregular-shaped room is a polygonal room or curved space with an irregular closed cavity and radiation shielding, and the virtual wall information represents the wall information after processing the original wall information of the irregular-shaped room.

[0040] In an embodiment of the present invention, the physical property information includes but is not limited to the wall physical property parameters of the wall of the special-shaped room, the gas physical property parameters of the air corresponding to the special-shaped room, and the water physical property parameters of the water in the room heating system. The physical property information can be preset as a fixed value and does not change with temperature. The heating system can be a floor heating system. The condition information includes but is not limited to boundary conditions such as outdoor temperature, solar radiation, heat dissipation of indoor personnel and equipment, floor heating water supply temperature and floor heating water supply flow. The temperature information can characterize the initial temperature of multiple control bodies in the special-shaped room, and the control body can characterize the floor, wall (including exterior wall and interior wall) and indoor air in the special-shaped room.

[0041] It should be noted that the physical property information, condition parameters and temperature information can be pre-stored in a database or obtained in real time through information acquisition equipment. Information of various dimensions can be obtained according to actual needs and conditions, and is not specifically limited here.

[0042] In operation S220, a heat transfer model is constructed based on the physical property information, the condition information, the virtual wall information, and the temperature information, wherein the heat transfer model includes a surface radiation model, a floor model, and an air-wall model.

[0043] In an embodiment of the present invention, the heat transfer model can be a model for analyzing complex heat transfer models, and has data processing and visualization functions. By establishing a geometric model of the special-shaped room and the heating system, the radiation heat transfer analysis and processing are performed by inputting the multi-dimensional information to be analyzed and the related parameters, and the temperature distribution information and heat flow direction information of the room are obtained.

[0044] In operation S230, the surface radiation model, the floor model and the air-wall model are cyclically used to determine the heat transfer result corresponding to the irregular-shaped room at the target time, wherein the heat transfer result meets the preset conditions and includes the radiation heat transfer result, the convection heat transfer result and the indoor temperature.

[0045] In an embodiment of the present invention, the surface radiation model can be used to determine the radiation heat transfer results of the inner surface of the wall, the ground and the roof at the target time. The floor model can be used to determine the convective heat transfer results between the ground and the indoor air, and the convective heat transfer results between the roof and the indoor air at the target time. The air and wall model can be used to determine the indoor air temperature at the target time. The heat transfer information of the special-shaped room at multiple target times can be determined based on a preset iteration time step, which can be determined according to actual conditions and is not limited here.

[0046] In an embodiment of the present invention, a geometric model and a numerical model can be established for a special-shaped room in a building using floor radiant heating. The special-shaped room can include exterior walls, interior walls, room air, and a floor and roof with built-in pipes. The modeling process can be simplified by making the following model assumptions: the physical parameters of air, water, and wall structures are constants, and changes in the physical parameters with temperature can be ignored; the middle interface of the inner wall is insulated, and heat transfer to the adjacent room can be ignored; the roof and the floor use a circulation boundary, and the heat transfer from the current layer to the lower room can be considered consistent with the heat transfer from the upper layer to the current room; the walls and the floor can only consider one-dimensional heat transfer in the thickness direction; the room air temperature is evenly distributed and can be considered as a control body.

[0047] According to an embodiment of the present invention, the radiation heat transfer process of the special-shaped room can be simulated based on multi-dimensional information corresponding to the special-shaped room (including physical property information, condition information, virtual wall information and temperature information) and a heat transfer model to obtain a heat transfer result. Since the virtual wall information realizes the processing and conversion of the original wall of the special-shaped room, the information quality and integrity of the input information are improved, and the heat transfer process in the room is more realistically reflected, which meets the heat transfer prediction of the complex-shaped special-shaped room; since the heat transfer result is obtained after iterating by cyclically utilizing multiple heat transfer models based on preset conditions, the accuracy and efficiency of the radiation heat transfer prediction for the special-shaped room are improved.

[0048] According to an embodiment of the present invention, the method further includes: determining a virtual wall corresponding to the irregular-shaped room, and using the virtual wall to split the irregular-shaped room into multiple sub-rooms; and determining a comprehensive angular coefficient corresponding to the irregular-shaped room based on the virtual wall information and the sub-angular coefficients corresponding to each of the multiple sub-rooms.

[0049] In the embodiments of the present invention, considering that the radiation heat transfer calculation method in the traditional technology is usually based on the assumption of a rectangular room, it is difficult to effectively handle the geometric characteristics of non-rectangular or irregular rooms. The present invention splits the special-shaped room to obtain multiple rooms that meet the radiation heat transfer prediction, and then uses the sub-angle coefficients corresponding to each of the multiple sub-rooms to determine the comprehensive angle coefficient of the special-shaped room.

[0050] For example, for multiple arbitrary polygons, the right-angle sawtooth can be used to approximate the hypotenuse and calculate the angle coefficient, so that the angle coefficient between the walls, doors and windows in any convex polygon room or curved space can be calculated.

[0051] Figure 3 An example schematic diagram of a process of splitting a special-shaped room according to an embodiment of the present invention is shown.

[0052] like Figure 3 As shown, when the plan view of the irregular room 300 is a concave polygon, due to the problem of radiation shielding, if the traditional radiation heat transfer calculation method is used to directly calculate the angular coefficient from wall i to wall j, the sum of the angular coefficients of wall i to each surface is greater than 1, which destroys the integrity of the angular coefficient. Without using the grid method, Monte Carlo and other microelement surface-based methods, it is very difficult to directly calculate the angular coefficient of the irregular closed cavity. In the present invention, by introducing the hypothetical wall 301 (virtual wall) represented by the dotted line in the figure, the concave polygon room is divided into multiple convex polygon sub-rooms 302 and 303, so that the approximate value of the comprehensive angular coefficient that cannot be obtained due to shielding can be obtained using the following formula (1).

[0053] X i,j =X i,k X k,j (1);

[0054] Among them, X i,j It can represent the comprehensive angular coefficient obtained after splitting the invisible room, X i,k It can represent the angular coefficient from wall i to virtual wall k, X k,j The angular coefficient from the virtual wall k to the wall j can be characterized.

[0055] It can be understood that considering that the radiation heat transfer of the inner wall is not the core factor affecting indoor heat transfer, the calculation method based on the assumed partition surface can ensure the integrity and relativity of the room's comprehensive angle coefficient. When dividing the virtual wall surface k, the partition surface area can be set as small as possible, thereby better reducing the error of the approximate calculation.

[0056] In the embodiment of the present invention, a complex concave polygon or curved surface space is divided into multiple convex polygon rooms by introducing a dotted line assumed wall (virtual wall). The assumed wall is only used for calculation and does not change the actual physical boundary. In the divided convex polygon rooms, the interchangeability and integrity theorem of the angle coefficients are used to calculate the angle coefficients in each convex polygon room. For the divided rooms, the angle coefficients between the assumed walls can be solved by geometric analysis or algebraic analysis. For the angle coefficients that cannot be directly calculated due to occlusion, the assumed wall is introduced to convert them into computable approximate values.

[0057] According to an embodiment of the present invention, by dividing a complex concave polygon or curved surface space into multiple convex polygon rooms, the complexity of angular coefficient calculation can be significantly reduced. Compared with directly calculating the angular coefficient of a complex special-shaped closed cavity, this method reduces the amount of calculation through segmentation and approximate processing, saves the consumption of system resources, and improves calculation efficiency.

[0058] According to an embodiment of the present invention, the preset condition includes at least one of the following: the number of iteration steps corresponding to the heat transfer result is greater than or equal to the preset number of iteration steps; the difference between the heat transfer result and the reference heat transfer information is less than or equal to the preset difference threshold.

[0059] In an embodiment of the present invention, the heat transfer result that satisfies the preset conditions can be determined as the final heat transfer result according to the actual situation. The preset number of iteration steps can represent the time step of the iteration cycle, and the preset time step of the iteration cycle can be determined by the time length between the current time point and a certain time point in the future. Alternatively, the difference between the indoor temperature of the current room and the preset indoor temperature is used as a preset condition, and the heat transfer result is obtained when the difference between the intermediate indoor temperature reached in the iteration cycle and the preset indoor temperature is less than or equal to the preset difference threshold.

[0060] For example, based on the initial state of the room (e.g., the initial temperature cannot meet the indoor comfort requirements), the heat transfer model can predict the temperature that can be reached in the room after a preset time step (e.g., 24 hours) by using the heating system to heat the room.

[0061] For example, when the current indoor temperature of an irregular room (for example, 16°C) cannot meet the preset indoor temperature (for example, 20°C), the difference threshold (for example, 0.5°C) with the preset indoor temperature of 20°C can be set. When the loop is iterated, the intermediate indoor temperature reached is 19.5°C, which meets the preset condition.

[0062] According to an embodiment of the present invention, a surface radiation model, a floor model and an air-wall model are used to determine a heat transfer result corresponding to a special-shaped room at a target time, including: determining a radiation heat transfer result between multiple inner surfaces of the special-shaped room based on physical property information, temperature information and a surface radiation model; determining a convection heat transfer result between the ground and indoor air of the special-shaped room based on physical property information, condition information and a floor model; and determining an indoor temperature based on physical property information, condition information and an air-wall model.

[0063] In an embodiment of the present invention, the surface radiation model can be constructed based on the absorption factor coefficient and the absolute temperature of the inner surface. The floor may include a covering layer, a floor layer and a buried pipe layer. On this basis, the floor model may include a first floor model corresponding to the covering layer and a second floor model corresponding to the floor layer. The air-wall model can be constructed based on indoor air property information, wall property information and related condition information. The related condition information may include external window condition information and equipment condition information.

[0064] In an embodiment of the present invention, the radiation heat exchange result may include the radiation heat exchange result between the inner surface and the ground, and between the inner surface and the roof, and the inner surface may include the inner wall surface of the wall in different directions of the room, the roof surface and the ground surface. The convection heat exchange result may include the convection heat exchange result between the ground and the indoor air, and the convection heat exchange result between the roof and the indoor air.

[0065] It should be noted that the roof and the ground use circulation boundaries, and the heat transfer from this layer to the lower room can be considered consistent with the heat transfer from the upper layer to the current room. Therefore, the radiation heat exchange between the roof and the inner wall surface can be equated with the radiation heat exchange between the ground and the inner wall surface; similarly, the convective heat transfer results between the ground and the indoor air can be equated with the convective heat transfer results between the roof and the indoor air.

[0066] According to an embodiment of the present invention, by combining multiple models, the heat transfer process in a special-shaped room can be considered more comprehensively. Different models are suitable for different heat transfer mechanisms and scenarios, so that a variety of complex heat transfer problems can be flexibly dealt with. The combination of multiple models can support heat transfer analysis of complex scenarios. For example, in a room with a radiant ceiling, by combining the surface radiation model and the air flow model, turbulence and conjugate heat transfer modes can be analyzed. This method can reveal the influence of complex geometric structures and heat transfer mechanisms on heat transfer results, providing strong support for building design and optimization.

[0067] According to an embodiment of the present invention, the physical property information includes surface geometry information and surface material information of the inner surface, and the inner surface includes a target inner surface and a reference inner surface; based on the physical property information, temperature information and a surface radiation model, the radiation heat transfer result between multiple inner surfaces of a special-shaped room is determined, including: determining the angular coefficients of multiple dimensions between the target inner surface and the reference inner surface based on the surface geometry information; determining the incident radiation and the absorption factor coefficient using the angular coefficient, surface geometry information, surface material information, temperature information and the net radiation of the target inner surface; and determining the radiation heat transfer result based on the absorption factor coefficient and the absolute temperature value corresponding to the target inner surface.

[0068] In an embodiment of the present invention, the target inner surface may represent an inner surface to be evaluated among multiple inner surfaces, and the reference inner surface may be another inner surface corresponding to the inner surface to be evaluated. Based on the relative positional relationship between the target inner surface and the reference inner surface (including being perpendicular to each other or parallel to each other), the angular coefficients of different dimensions may be determined. The surface geometric information may include but is not limited to the area information and length and width information of the inner surface. The surface material information may be used to determine the total radiation capacity of the inner wall (the total radiation capacity may be recorded as E), the emissivity of the wall (which may be recorded as ε), and the absorptivity of the wall (which may be recorded as α).

[0069] In an embodiment of the present invention, the temperature information may represent the thermodynamic temperature of the wall, roof and floor materials in the room, including the absolute temperature value. The net radiation of the target inner surface may represent the sum of the part radiated by the target inner wall itself and the part reflected in the radiation of other inner walls. The incident radiation may represent the radiation incident from other inner walls. The absorption factor coefficient may be determined by the area of ​​the inner wall, the emissivity of the wall and the absorption factor.

[0070] For example, the walls of a shaped room can be assumed to be diffuse scattering gray bodies, and the system of equations can be repeatedly re-solved for different initial wall temperature distributions. For simulation kernels implemented using state-space equations, the Jebhart method can be used to solve the absorption factors between the walls.

[0071] In an embodiment of the present invention, each inner wall surface of the irregular-shaped room can be regarded as a right-angled polygon. According to different positional relationships between two right-angled polygons (for example, perpendicular to each other or parallel to each other), the angular coefficient between any two inner wall surfaces in different situations can be calculated.

[0072] Figure 4 A schematic diagram of mutually perpendicular inner wall surfaces according to an embodiment of the present invention is shown.

[0073] like Figure 4 As shown in the figure, for any mutually perpendicular right-angled polygons i and j, the coordinates of each vertex (1, 2, 3, 4) of the polygons can be set according to the Cartesian coordinate system. If polygon i is on the XY plane and polygon j is on the XZ plane, the nodes of the two right-angled polygons are arranged in a clockwise order, and the angular coefficient X between the two polygons is 1 i，j It can be obtained from formula (2)-(3):

[0074] (2);

[0075] (3);

[0076] Among them, X 1 i，j It can represent the angle coefficient between mutually perpendicular right-angled polygons; A i It can represent the area of ​​wall i. i,n It can represent the node numbered n on the wall i; P j,m It can represent the node with serial number m on the wall j. In formula (3), the coordinate values ​​x, y, and z corresponding to the nodes can be marked in the same format. ξ can represent the relative difference information between different nodes on the coordinate axis X, v can represent the relative difference information between different nodes on the coordinate axes Y and Z, and x i,n It can represent the information of the node numbered n on the coordinate axis X on the wall surface i, x j,m It can represent the information of the node with the serial number m on the wall j on the coordinate axis X; i,n It can represent the information of the node numbered n on the coordinate axis Y on the wall surface i, y j,m It can represent the information of the node with serial number m on the wall j on the coordinate axis Y; i,n It can represent the information of the node numbered n on the coordinate axis Z on the wall i, z j,m It can represent the information of the node with the serial number m on the wall j on the coordinate axis Z, f1(P i,n , P j,m ) can represent the relationship function between the node with number n on wall i and the node with number m on wall j.

[0077] Figure 5A schematic diagram of mutually parallel inner wall surfaces according to an embodiment of the present invention is shown.

[0078] like Figure 5 As shown, for any mutually parallel right-angled polygons i and j, if both polygons are on the XY plane (the right-angled polygons are parallel), then X 2 i，j It can be obtained through the following formulas (4)-(5):

[0079] (4);

[0080] (5);

[0081] Among them, X 2 i，j It can represent the angular coefficient between parallel right-angled polygons, and h can represent the relative difference information between different nodes on the coordinate axis Z.

[0082] In an embodiment of the present invention, after determining the angular coefficient between any right-angled polygons, the incident radiation and the absorption factor coefficient can be determined using the angular coefficient, surface geometry information, surface material information, temperature information and the net radiation of the target inner surface.

[0083] Figure 6 A schematic diagram showing an example of inner wall radiation heat exchange according to an embodiment of the present invention is shown.

[0084] like Figure 6 As shown in the figure, wall radiation heat transfer can include a variety of basic radiation quantities and parameters, among which E can represent the total radiation capacity of the inner wall, G can represent the radiation from other walls, ε can represent the emissivity of the wall, α can represent the absorptivity of the wall, αG can represent the absorbed radiation, and εE can represent the heat radiated outward. Absorption factor B j→i It can be solved by the Gerber Hart method to characterize the proportion of the radiation heat transfer emitted by the inner wall surface j that is ultimately absorbed by the wall surface i, as shown in the following formulas (6)-(7):

[0085] (6);

[0086] (7);

[0087] Among them, Q can represent the radiation heat transfer, Q j→i The radiation heat exchange between inner wall surface j and inner wall surface i, S i It can represent the area of ​​the inner wall i, S j It can represent the area of ​​the inner wall j. i It can characterize the emissivity of wall i, ε jIt can characterize the emissivity of wall j. j→i Characterizes the proportion of the radiation heat transfer emitted by inner wall j that is finally absorbed by wall i, B i→j Characterizes the proportion of the radiation heat transfer emitted by inner wall surface i that is finally absorbed by wall surface j.

[0088] It can be understood that according to the definition of the absorption factor, as shown in formula (7), the proportion of the radiation heat transfer emitted by inner wall surface j that is ultimately absorbed by wall surface i is equivalent to the proportion of the radiation heat transfer emitted by inner wall surface i that is ultimately absorbed by wall surface j, which leads to its property - relativity.

[0089] According to the Stefan-Boltzmann theorem, the radiation heat transfer Q between wall j and wall i is j,i It can be expressed as shown in formula (8):

[0090] (8);

[0091] Among them, Q i→j The radiation heat transfer between inner wall surface i and inner wall surface j is T i and T j It can represent the absolute temperature of wall i and j respectively, both of which are thermodynamic temperatures with the unit of K; the coefficient σ is the Stefan-Boltzmann constant with a value of 5.670374419×10-8.

[0092] For coefficient , the temperature can be taken as 20℃, and the radiation heat transfer Q between wall j and wall i can be j,i Converted into a linear expression, as shown in the following formula (9):

[0093] (9);

[0094] in, A coefficient that can characterize the absorption factor.

[0095] Since the temperature in the formula needs to be thermodynamic temperature, and the radiation heat transfer temperature of the building wall is generally in the range of 5~30℃, that is, 278.15~303.15℃, the extreme value range of the linearization coefficient is 5.290~6.013, and the error is about 5%~8%, which is within the acceptable range.

[0096] In a possible embodiment, the absorption factor coefficient The determination method may include: calculating the net radiation heat J of wall surface i i , as shown in the following formula (10):

[0097] (10);

[0098] Among them, α i It can characterize the absorption rate of wall i, G i It can represent the amount of radiation that wall i receives from other walls. i It can represent the total radiation capacity of the inner wall surface i.

[0099] According to the definition of net radiation J and absorption factor B, we can know that the above Figure 6 The radiation heat G incident from other walls and the absorbed radiation αG can be expressed as follows:

[0100] (11);

[0101] (12);

[0102] Among them, X i，j It can be determined based on the relative relationship between two right-angled polygons (perpendicular or parallel). j The net radiation heat of wall j can be characterized.

[0103] For diffuse gray bodies, the wall emissivity is equal to the wall absorptivity, that is, ε = α. On this basis, substituting ε = α and formula (12) into formula (10) can obtain the relationship between the net radiation J based on the absorption factor B and the total wall radiation E, which can be organized into a tensor form δ i,j , as shown in the following formula (13):

[0104] (13);

[0105] Similarly, substitute formula (11) into formula (10) and organize it into tensor form δ i,j , as shown in the following formula (14):

[0106] (14);

[0107] Therefore, the relationship between the net radiation J and the total wall radiation E based on radiation heat balance can be obtained, as shown in the following formula (15):

[0108] (15);

[0109] By comparing formula (13) and formula (15), the calculation method of the absorption factor coefficient can be obtained, as shown in the following formula (16):

[0110] (16);

[0111] It can be understood that an example of how to determine the radiation heat transfer amount has been described above, and an example of how to determine the view coefficients in multiple dimensions will be described below.

[0112] According to an embodiment of the present invention, the angular coefficient includes a first angular coefficient and a second angular coefficient; the angular coefficients in multiple dimensions between the target inner surface and the reference inner surface are determined based on surface geometry information, including: when the target inner surface and the reference inner surface are parallel to each other, using the surface geometry information and a first analysis strategy to determine the first angular coefficient; when the target inner surface and the reference inner surface are perpendicular to each other, using the surface geometry information and the second analysis strategy to determine the second angular coefficient.

[0113] In the embodiment of the present invention, the first angular coefficient may represent the angular coefficient between any two right-angled polygons that are parallel to each other, and the second angular coefficient may represent the angular coefficient between any two right-angled polygons that are perpendicular to each other.

[0114] It can be understood that the calculation of the angle coefficients between the surfaces of the enclosure structures in a special-shaped room can be regarded as the calculation of the angle coefficients of a special-shaped closed cavity whose surfaces are all vertical or horizontal. If the polygon formed by the room walls is a convex polygon and the angles between the walls are all right angles, the angle coefficients between any vertical or horizontal planes can be calculated using the above formulas (2) to (5).

[0115] According to an embodiment of the present invention, the floor entity of the special-shaped room includes a buried pipe layer, a covering layer and a slab layer, the physical property information includes buried pipe physical property information corresponding to the buried pipe layer, floor physical property information corresponding to the slab layer, and covering physical property information corresponding to the covering layer, the condition information includes temperature condition information, and the convective heat transfer result includes a first heat transfer result corresponding to the buried pipe layer, a second heat transfer result corresponding to the floor layer, and a third heat transfer result corresponding to the covering layer; the convective heat transfer result between the ground and the indoor air of the special-shaped room is determined based on the physical property information, the condition information and the floor model, including: determining at least one slab control body corresponding to each of the buried pipe layer, the covering layer and the slab layer, and a node analysis strategy corresponding to the slab control body; determining the first heat transfer result corresponding to the buried pipe layer by using the node analysis strategy, the floor model, the buried pipe physical property information and the temperature condition information, determining the second heat transfer result corresponding to the floor layer by using the node analysis strategy, the floor model, the floor physical property information and the temperature condition information, and determining the third heat transfer result corresponding to the covering layer by using the node analysis strategy, the floor model, the covering physical property information and the temperature condition information.

[0116] In an embodiment of the present invention, the buried pipe physical property information may include temperature information, material information, thickness information, etc. corresponding to the buried pipe layer, the covering layer, and the floor layer in the heating system. The node analysis strategy may include an external node analysis method and an internal node analysis method according to the temperature gradient of different layers. The first heat exchange result may represent the energy balance information corresponding to the buried pipe layer, the second heat exchange result may represent the energy balance information corresponding to the floor layer, and the third heat exchange result may represent the energy balance information corresponding to the covering layer.

[0117] Figure 7 A structural schematic diagram of a heating system according to an embodiment of the present invention is shown.

[0118] like Figure 7 As shown, the floor 70 can be divided from bottom to top into a floor slab layer 71, a buried pipe layer 72 and a covering layer 73. To solve the mathematical model of a room heated by floor radiation, the floor model, the air-wall model and the surface radiation model can be called in sequence time by time.

[0119] In an embodiment of the present invention, the floor model can be called to solve the convection heat exchange between the ground, roof and indoor air at the current moment. The floor model can establish heat balance equations for the floor layer, buried pipe layer and covering layer respectively, and take the heat dissipation of the pipeline as the internal heat source of the buried pipe layer. The pipelines are evenly arranged in the buried pipe layer, and the temperature distribution of the buried pipe layer is uniform, so that the buried pipe layer can be considered as a control body, and its energy balance equation can be shown as the following formula (17):

[0120] (17);

[0121] in, It can characterize the specific heat capacity of the buried pipe layer, in J / (kg·K); It can represent the quality of buried pipe layer, in kg; It can represent the temperature of the buried pipe layer at the kth iteration, in °C; It can represent the time step, unit s; It can represent the surface temperature under the cover layer at the kth iteration, in °C; It can represent the thickness of the buried pipe layer, in m; It can characterize the thermal conductivity of the buried pipe layer, with the unit of W / (m·K); It can represent the upper surface temperature of the floor at the kth iteration, in °C; Can represent the floor area, unit m 2 ; It can represent the water temperature at the inlet of the buried pipe at the kth iteration, in °C; It can represent the water temperature at the outlet of the buried pipe at the kth iteration, in °C; It can represent the surface area of ​​buried pipes, in m 2 ; It can characterize the convection heat transfer coefficient between the inner surface of the buried pipe and water, with the unit of W / (m 2 K); It can represent the wall thickness of buried pipe, in m; It can represent the thermal conductivity of water, with the unit of W / (m·K).

[0122] Since the cover layer and the floor layer are thick and there is an obvious temperature gradient in the thickness direction, they can be divided into 11 control bodies. The control body close to the buried pipe layer and the control body close to the room air can use the external node method, and the other control bodies use the internal node method. The energy balance equation of the cover layer is shown in the following formulas (18)-(20) from the inside to the outside:

[0123] (18);

[0124] (19);

[0125] (20);

[0126] in, It can characterize the specific heat capacity of the covering layer, in J / (kg·K); It can represent the mass of the covering layer in kg; It can represent the surface temperature under the cover layer at the kth iteration, in °C; It can represent the temperature of the ith control volume of the kth iteration cover layer, in °C; It can represent the surface temperature of the kth iteration cover layer, in °C; It can represent the time step, unit s; It can represent the temperature of the buried pipe layer at the kth iteration, in °C; It can represent the thickness of the buried pipe layer, in m; It can characterize the thermal conductivity of the buried pipe layer, with the unit of W / (m·K); It can characterize the thermal conductivity of the covering layer, in units of W / (m·K); Can represent the floor area, unit m 2 ; It can characterize the convective heat transfer coefficient between the upper surface of the cover layer and the indoor air, with the unit of W / (m 2 K); It can represent the indoor temperature of the kth iteration, in °C; It can represent the radiation heat transfer of the cover layer in the kth iteration, in W.

[0127] The energy balance equation of the floor layer can be expressed from the inside to the outside as follows (21)-(23):

[0128] (twenty one);

[0129] (twenty two);

[0130] (twenty three);

[0131] in, It can characterize the specific heat capacity of the floor layer, in J / (kg·K); It can represent the mass of the floor layer, in kg; It can represent the upper surface temperature of the floor layer at the kth iteration, in °C; It can represent the temperature of the ith control volume of the floor layer at the kth iteration, in °C; It can represent the lower surface temperature of the floor layer at the kth iteration, in °C; It can represent the time step, unit s; It can represent the temperature of the buried pipe layer at the kth iteration, in °C; It can represent the thickness of the buried pipe layer, in m; It can characterize the thermal conductivity of the buried pipe layer, with the unit of W / (m·K); It can characterize the thermal conductivity of the floor layer, with the unit of W / (m·K); Can represent the floor area, unit m 2 ; It can characterize the convection heat transfer coefficient between the lower surface of the floor layer and the indoor air, with the unit of W / (m2·K); It can represent the indoor temperature of the kth iteration, in °C; It can represent the radiation heat transfer of the k-th iteration floor layer, in W.

[0132] According to an embodiment of the present invention, the method further comprises: cyclically determining a return water temperature result of the heating entity in the special-shaped room at a target time based on the first heat exchange result, the second heat exchange result and the third heat exchange result.

[0133] In an embodiment of the present invention, the heating entity may include a heating pipe body and a water body in a floor heating system. The floor heating return water temperature may be calculated iteratively and cyclically according to the solution process of the floor model, and the iterative calculation is shown in the following formula (24):

[0134] (twenty four);

[0135] in, It can represent the water temperature at the inlet of the buried pipe at the kth iteration, in °C; It can represent the water temperature at the outlet of the buried pipe at the kth iteration, in °C; It can represent the surface area of ​​buried pipes, in m 2 ; It can characterize the convection heat transfer coefficient between the inner surface of the buried pipe and water, with the unit of W / (m 2 K); It can represent the thermal conductivity of water, with the unit of W / (m·K). It can represent the wall thickness of buried pipe, in m; It can represent the hot water flow rate in the buried pipe, unit is m 3 / s; It can characterize the specific heat capacity of hot water in the buried pipe, with the unit of J / (kg·K).

[0136] It can be understood that an example of how to determine the result of convective heat exchange between the ground and the indoor air has been described above, and an example of how to determine the indoor temperature will be described below.

[0137] According to an embodiment of the present invention, the physical property information includes wall physical property information and air physical property information, the condition information includes outdoor temperature information and solar radiation information, and the special-shaped room includes an inner wall entity, an outer wall entity and an air entity; the indoor temperature is determined based on the physical property information, the condition information and the air-wall model, including: determining at least one wall control body corresponding to the inner wall entity and the outer wall entity respectively, and a node analysis strategy corresponding to the wall control body; determining a fourth heat exchange result corresponding to the inner wall entity and a fifth heat exchange result corresponding to the outer wall entity based on the node analysis strategy, the physical property information, the condition information and the air-wall model; and determining the indoor temperature based on the fourth heat exchange result and the fifth heat exchange result.

[0138] In the embodiment of the present invention, the physical property information corresponding to the special-shaped room includes but is not limited to the physical property information of the wall and the physical property information of the air, such as the density, thermal conductivity, specific heat capacity and other information of the objects such as the air, hot water, floor, exterior wall, interior wall, etc.; the condition information includes but is not limited to the outdoor temperature information and solar radiation information, such as the outdoor temperature, solar irradiance, heat dissipation of indoor personnel and equipment, and the temperature and flow of floor heating water supply. The temperature information may include but is not limited to the initial temperature of each control body of the floor, exterior wall, interior wall and indoor air.

[0139] Figure 8 A schematic diagram of a room plan according to an embodiment of the present invention is shown.

[0140] like Figure 8 As shown, the room outer wall 81 can be divided into three control bodies. The control bodies 811 at both ends can use the external node method, and the thickness can be 0.1 times the thickness of the entire outer wall. The middle control body 812 can use the internal node method. The energy balance equations are shown in the following formulas (25)-(27) from the inside to the outside:

[0141] (25);

[0142] (26);

[0143] (27);

[0144] in, It can characterize the mass coefficient of the ith control volume of the exterior wall, , ; It can characterize the specific heat capacity of the exterior wall, in J / (kg·K); It can represent the mass of the exterior wall, in kg; It can represent the temperature of the ith control volume of the outer wall at the kth iteration, in °C; It can represent the time step, unit s; It can represent the thickness of the exterior wall, in m; It can characterize the thermal conductivity of the exterior wall, in units of W / (m·K); Can represent the exterior wall area, unit m 2 ; It can represent the convection heat transfer coefficient between the inner surface of the exterior wall and the indoor air, with the unit of W / (m 2 K); It can represent the indoor temperature of the kth iteration, in °C; It can represent the radiation heat transfer of the inner surface of the exterior wall at the kth iteration, in W; It can characterize the convective heat transfer coefficient between the outer surface of the exterior wall and the outdoor air, with the unit of W / (m2·K); It can represent the outdoor temperature of the kth iteration, in °C; It can characterize the absorption rate of solar radiation by the exterior wall surface; It can represent the solar radiation intensity of the kth iteration, in W / m 2 .

[0145] like Figure 8 As shown, the temperature of the inner wall 82 is usually close. The inner wall can be regarded as a whole. Considering the heat transfer at the middle interface of the inner wall, it is divided into two control bodies 821 and 822. Both use the external node method. Then, the energy balance equations are shown in the following formulas (28)-(29) from the inside to the outside:

[0146] (28);

[0147] (29);

[0148] in, It can characterize the quality coefficient of the i-th control volume of the inner wall, , ; It can characterize the specific heat capacity of the inner wall, in J / (kg·K); It can represent the mass of the inner wall, in kg; It can represent the temperature of the i-th control volume of the inner wall at the k-th iteration, in °C; It can represent the time step, unit s; It can represent the thickness of the inner wall, in m; It can characterize the thermal conductivity of the interior wall, in units of W / (m·K); Can represent the interior wall area, unit m 2 ; It can represent the convection heat transfer coefficient between the inner surface of the inner wall and the indoor air, with the unit of W / (m 2 K); It can represent the indoor temperature of the kth iteration, in °C; It can represent the radiation heat transfer of the inner surface of the inner wall at the kth iteration, in W.

[0149] The energy balance equation for indoor air is shown in the following formula (30):

[0150] (30);

[0151] in, It can characterize the specific heat capacity of indoor air, in J / (kg·K); It can represent the indoor air quality, unit is kg; It can represent the indoor air temperature of the kth iteration, in °C; It can represent the time step, unit s; Can represent the interior wall area, unit m 2 ; It can represent the convection heat transfer coefficient between the inner surface of the inner wall and the indoor air, with the unit of W / (m 2 K); It can represent the inner surface temperature of the inner wall at the kth iteration, in °C; Can represent the exterior wall area, unit m 2 ; It can represent the inner surface temperature of the exterior wall at the kth iteration, in °C; It can characterize the heat transfer coefficient of the external window, W / (m 2 K); Can represent the external window area, unit m 2 ; It can represent the outdoor temperature of the kth iteration, in °C; It can represent the convective heat dissipation of the kth iteration covering layer to the room, in W; It can represent the convective heat dissipation of the upper floor layer to the room at the kth iteration, in W; It can represent the heat dissipation of indoor personnel and equipment at the kth iteration, in W.

[0152] The temperature of each control body of the floor, exterior wall, interior wall and indoor air at the current moment can be stored, and the calculation of the next time step can be performed.

[0153] In a feasible embodiment, the method for determining radiation heat transfer in a special-shaped room may include the following operations S41 to S45.

[0154] In operation S41, a geometric model of a special-shaped room and a floor heating system can be established, and relevant physical property information, condition information, virtual wall information and temperature information can be input. For example, the physical property parameters of air, water and wall, density, thermal conductivity, specific heat capacity, etc. can be set to a fixed value and do not change with temperature. The condition information can include outdoor temperature, solar radiation, heat dissipation of indoor personnel and equipment, floor heating water supply temperature and flow, etc. The temperature information includes the initial temperature of each control body in the floor, exterior wall, interior wall and indoor air.

[0155] In operation S42, for the radiation heat exchange between different inner surfaces of the special-shaped room, the angle coefficient between the walls can be calculated first. For any mutually perpendicular or parallel walls, the angle coefficient is calculated using the corresponding formula. For a concave polygonal room, due to the radiation shielding problem, the concave polygonal room can be divided into several convex polygons by the segmentation method for approximate calculation. The wall radiation heat exchange can be calculated based on the Stefan-Boltzmann law.

[0156] In operation S43, the floor may include a covering layer, a buried pipe layer, and a floor layer. The energy balance equation for the buried pipe layer can be solved by assuming that its temperature distribution is uniform. Since the floor layer and the covering layer have large temperature gradients, they can be divided into multiple control volumes for solution, and the heat transfer between different layers is calculated by combining the external node method and the internal node method.

[0157] In operation S44, the outer wall and the inner wall can be divided into multiple control volumes. For the outer wall, the energy balance equation of the two ends of the outer wall and the middle control volume can be calculated respectively by using the inner and outer node method. The inner wall can be assumed to have a uniform temperature and its heat transfer can be calculated by using two control volumes. The energy balance equation of indoor air takes into account the heat exchange between air and surfaces such as walls and the ground, and calculates the indoor temperature distribution at the current moment.

[0158] In operation S45, the above calculation steps can be integrated to perform iterative calculations time by time. In each time step, the radiation heat transfer of the enclosure structure can be solved first, and then the convection heat transfer between the ground, the roof and the indoor air can be calculated, so as to calculate the indoor temperature at the current moment, and return to S42 to continue the calculation at the next moment until the predetermined number of time steps is reached.

[0159] Based on the above method for determining the radiant heat transfer of a special-shaped room, the present invention also provides a device for determining the radiant heat transfer of a special-shaped room. Fig. 9 The device is described in detail.

[0160] Fig. 9 A structural block diagram of a device for determining radiation heat transfer in a special-shaped room according to an embodiment of the present invention is shown.

[0161] like Fig. 9 As shown, the device for determining radiation heat transfer in a special-shaped room of this embodiment includes an information acquisition module 910 , a heat transfer model construction module 920 and a heat transfer result determination module 930 .

[0162] The information acquisition module 910 is used to obtain physical property information, condition information, virtual wall information and temperature information corresponding to the special-shaped room, wherein the special-shaped room is a polygonal room or curved space with a special-shaped closed cavity and radiation shielding, and the virtual wall information represents the wall information after processing the original wall information of the special-shaped room. In one embodiment, the information acquisition module 910 can be used to perform the operation S210 described above, which will not be repeated here.

[0163] The heat transfer model building module 920 is used to build a heat transfer model based on the physical property information, condition information, virtual wall information and temperature information, wherein the heat transfer model includes a surface radiation model, a floor model and an air-wall model. In one embodiment, the heat transfer model building module 920 can be used to perform the operation S220 described above, which will not be repeated here.

[0164] The heat transfer result determination module 930 is used to cyclically utilize the surface radiation model, the floor model, and the air-wall model to determine the heat transfer result corresponding to the special-shaped room at the target time, wherein the heat transfer result satisfies the preset conditions, and the heat transfer result includes the radiation heat transfer result, the convection heat transfer result, and the indoor temperature. In one embodiment, the heat transfer result determination module 930 can be used to perform the operation S230 described above, which will not be repeated here.

[0165] According to an embodiment of the present invention, the information acquisition module 910, the heat transfer model construction module 920 and the heat transfer result determination module 930 in the determination device based on the radiation heat transfer of the special-shaped room can simulate the radiation heat transfer process of the special-shaped room based on the multi-dimensional information (including physical property information, condition information, virtual wall information and temperature information) corresponding to the special-shaped room and the heat transfer model to obtain the heat transfer result. Since the virtual wall information realizes the processing and conversion of the original wall of the special-shaped room, the information quality and integrity of the input information are improved, the heat transfer process in the room is reflected more realistically, and the heat transfer prediction of the complex-shaped special-shaped room is satisfied; since the heat transfer result is obtained after iterating by cyclically utilizing multiple heat transfer models based on preset conditions, the accuracy and efficiency of the radiation heat transfer prediction for the special-shaped room are improved.

[0166] According to an embodiment of the present invention, the device further includes: a sub-room splitting module and an angle coefficient determination module. The sub-room splitting module is used to determine a virtual wall surface corresponding to the irregular-shaped room, and use the virtual wall surface to split the irregular-shaped room into multiple sub-rooms; the angle coefficient determination module is used to determine the comprehensive angle coefficient corresponding to the irregular-shaped room based on the virtual wall surface information and the sub-angle coefficients corresponding to each of the multiple sub-rooms.

[0167] According to an embodiment of the present invention, the preset condition includes at least one of the following: the number of iteration steps corresponding to the heat transfer result is greater than or equal to the preset number of iteration steps; the difference between the heat transfer result and the reference heat transfer information is less than or equal to the preset difference threshold.

[0168] According to an embodiment of the present invention, the heat transfer result determination module 930 includes: a radiation heat transfer result determination submodule, a convection heat transfer result determination submodule and an indoor temperature determination submodule. The radiation heat transfer result determination submodule is used to determine the radiation heat transfer result between multiple inner surfaces of the irregular-shaped room based on physical property information, temperature information and surface radiation model; the convection heat transfer result determination submodule is used to determine the convection heat transfer result between the floor of the irregular-shaped room and the indoor air based on physical property information, condition information and floor model; the indoor temperature determination submodule is used to determine the indoor temperature based on physical property information, condition information and air-wall model.

[0169] According to an embodiment of the present invention, the physical property information includes surface geometry information and surface material information of the inner surface, and the inner surface includes a target inner surface and a reference inner surface; the radiation heat exchange result determination submodule includes: an angle coefficient determination unit, an absorption factor coefficient determination unit, and a radiation heat exchange result determination unit. The angle coefficient determination unit is used to determine the angle coefficients of multiple dimensions between the target inner surface and the reference inner surface based on the surface geometry information; the absorption factor coefficient determination unit is used to determine the incident radiation amount and the absorption factor coefficient using the angle coefficient, surface geometry information, surface material information, temperature information, and the net radiation amount of the target inner surface; the radiation heat exchange result determination unit is used to determine the radiation heat exchange result based on the absorption factor coefficient and the absolute temperature value corresponding to the target inner surface.

[0170] According to an embodiment of the present invention, the angular coefficient includes a first angular coefficient and a second angular coefficient; the angular coefficient determining unit includes: a first angular coefficient determining subunit and a second angular coefficient determining subunit. The first angular coefficient determining subunit is used to determine the first angular coefficient by using surface geometry information and a first analysis strategy when the target inner surface and the reference inner surface are parallel to each other; the second angular coefficient determining subunit is used to determine the second angular coefficient by using surface geometry information and a second analysis strategy when the target inner surface and the reference inner surface are perpendicular to each other.

[0171] According to an embodiment of the present invention, the floor entity of the special-shaped room includes a buried pipe layer, a covering layer and a slab layer, the physical property information includes buried pipe physical property information corresponding to the buried pipe layer, floor physical property information corresponding to the slab layer, and covering physical property information corresponding to the covering layer, the condition information includes temperature condition information, and the convective heat transfer result includes a first heat transfer result corresponding to the buried pipe layer, a second heat transfer result corresponding to the floor slab layer, and a third heat transfer result corresponding to the covering layer; the convective heat transfer result determination submodule includes: a strategy determination unit and a heat transfer result determination unit. A strategy determination unit is used to determine at least one slab control body corresponding to the buried pipe layer, the covering layer and the floor layer respectively, and a node analysis strategy corresponding to the slab control body; a heat exchange result determination unit is used to determine a first heat exchange result corresponding to the buried pipe layer by using the node analysis strategy, the floor model, the physical property information of the buried pipe and the temperature condition information, to determine a second heat exchange result corresponding to the floor layer by using the node analysis strategy, the floor model, the physical property information of the floor and the temperature condition information, and to determine a third heat exchange result corresponding to the covering layer by using the node analysis strategy, the floor model, the physical property information of the covering and the temperature condition information.

[0172] According to an embodiment of the present invention, the device also includes: a return water temperature result determination module, which is used to cyclically determine the return water temperature result of the heating entity in the special-shaped room at the target time based on the first heat exchange result, the second heat exchange result and the third heat exchange result.

[0173] According to an embodiment of the present invention, the physical property information includes wall physical property information and air physical property information, the condition information includes outdoor temperature information and solar radiation information, and the special-shaped room includes an inner wall entity, an outer wall entity and an air entity; the indoor temperature determination submodule includes: a node analysis strategy determination unit, a plurality of heat exchange result determination units and an indoor temperature determination unit. The node analysis strategy determination unit is used to determine at least one wall control body corresponding to each of the inner wall entity and the outer wall entity, and the node analysis strategy corresponding to the wall control body; the plurality of heat exchange result determination units are used to determine the fourth heat exchange result corresponding to the inner wall entity and the fifth heat exchange result corresponding to the outer wall entity based on the node analysis strategy, physical property information, condition information and air-wall model; the indoor temperature determination unit is used to determine the indoor temperature based on the fourth heat exchange result and the fifth heat exchange result.

[0174] According to an embodiment of the present invention, any multiple modules among the information acquisition module 910, the heat transfer model construction module 920 and the heat transfer result determination module 930 can be combined into one module for implementation, or any one of the modules can be split into multiple modules. Alternatively, at least part of the functions of one or more of these modules can be combined with at least part of the functions of other modules and implemented in one module. According to an embodiment of the present invention, at least one of the information acquisition module 910, the heat transfer model construction module 920 and the heat transfer result determination module 930 can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on a chip, a system on a substrate, a system on a package, an application specific integrated circuit (ASIC), or can be implemented by hardware or firmware such as any other reasonable way of integrating or packaging the circuit, or implemented in any one of the three implementation methods of software, hardware and firmware or in any appropriate combination of any of them. Alternatively, at least one of the information acquisition module 910, the heat transfer model construction module 920 and the heat transfer result determination module 930 can be at least partially implemented as a computer program module, and when the computer program module is run, the corresponding function can be executed.

[0175] Fig.10 A block diagram of an electronic device suitable for implementing a method for determining radiation heat transfer in a special-shaped room according to an embodiment of the present invention is shown.

[0176] like Fig.10 As shown, the electronic device according to an embodiment of the present invention includes a processor 1001, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage part 1008 into a random access memory (RAM) 1003. The processor 1001 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or a related chipset and / or a special-purpose microprocessor (e.g., an application-specific integrated circuit (ASIC)), etc. The processor 1001 may also include an onboard memory for caching purposes. The processor 1001 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of the present invention.

[0177] In RAM 1003, various programs and data required for the operation of the electronic device are stored. Processor 1001, ROM 1002 and RAM 1003 are connected to each other via bus 1004. Processor 1001 performs various operations of the method flow according to the embodiment of the present invention by executing the program in ROM 1002 and / or RAM 1003. It should be noted that the program can also be stored in one or more memories other than ROM 1002 and RAM 1003. Processor 1001 can also perform various operations of the method flow according to the embodiment of the present invention by executing the program stored in the one or more memories.

[0178] According to an embodiment of the present invention, the electronic device may further include an input / output (I / O) interface 1005, which is also connected to the bus 1004. The electronic device may further include one or more of the following components connected to the input / output (I / O) interface 1005: an input portion 1006 including a keyboard, a mouse, etc.; an output portion 1007 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage portion 1008 including a hard disk, etc.; and a communication portion 1009 including a network interface card such as a LAN card, a modem, etc. The communication portion 1009 performs communication processing via a network such as the Internet. A drive 1010 is also connected to the input / output (I / O) interface 1005 as needed. A removable medium 1011, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 1010 as needed, so that a computer program read therefrom is installed into the storage portion 1008 as needed.

[0179] The present invention also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiment; or may exist independently without being assembled into the device / apparatus / system. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method according to the embodiment of the present invention is implemented.

[0180] According to an embodiment of the present invention, the computer-readable storage medium may be a non-volatile computer-readable storage medium, for example, it may include but is not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, an apparatus or a device. For example, according to an embodiment of the present invention, the computer-readable storage medium may include the ROM 1002 and / or RAM 1003 described above and / or one or more memories other than ROM 1002 and RAM 1003.

[0181] The embodiment of the present invention also includes a computer program product, which includes a computer program, and the computer program contains program code for executing the method shown in the flowchart. When the computer program product is run in a computer system, the program code is used to enable the computer system to implement the method for determining radiation heat transfer in a special-shaped room provided by the embodiment of the present invention.

[0182] The computer program executes the above functions defined in the system / device of the embodiment of the present invention when it is executed by the processor 1001. According to the embodiment of the present invention, the system, device, module, unit, etc. described above can be implemented by a computer program module.

[0183] In one embodiment, the computer program may rely on tangible storage media such as optical storage devices, magnetic storage devices, etc. In another embodiment, the computer program may also be transmitted and distributed in the form of signals on a network medium, and downloaded and installed through the communication part 1009, and / or installed from the removable medium 1011. The program code contained in the computer program may be transmitted using any appropriate network medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0184] In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 1009, and / or installed from the removable medium 1011. When the computer program is executed by the processor 1001, the above functions defined in the system of the embodiment of the present invention are performed. According to the embodiment of the present invention, the system, device, means, module, unit, etc. described above can be implemented by a computer program module.

[0185] According to an embodiment of the present invention, the program code for executing the computer program provided by the embodiment of the present invention can be written in any combination of one or more programming languages. Specifically, these computing programs can be implemented using high-level process and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, Java, C++, python, "C" language or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, partially on the remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device can be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (e.g., using an Internet service provider to connect through the Internet).

[0186] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0187] It will be appreciated by those skilled in the art that the features described in the various embodiments of the present invention may be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in the present invention. In particular, without departing from the spirit and teachings of the present invention, the features described in the various embodiments of the present invention may be combined and / or combined in various ways. All of these combinations and / or combinations fall within the scope of the present invention.

[0188] The embodiments of the present invention are described above. However, these embodiments are only for the purpose of illustration, and are not intended to limit the scope of the present invention. Although each embodiment is described above, it does not mean that the measures in each embodiment cannot be used in combination advantageously. Without departing from the scope of the present invention, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. A method for determining radiation heat transfer in a special-shaped room, characterized in that: The method comprises: Acquire physical property information, condition information, virtual wall information and temperature information corresponding to the special-shaped room, wherein the special-shaped room is a polygonal room or curved space with a special-shaped closed cavity and radiation shielding, the virtual wall information represents the wall information after the original wall information of the special-shaped room is processed, the physical property information includes wall physical property parameters, gas physical property parameters and water physical property parameters, and the condition information includes outdoor temperature information, solar radiation information, indoor personnel and equipment heat dissipation information, floor heating water supply temperature and floor heating water supply flow information; A heat transfer model is constructed based on the physical property information, condition information, virtual wall information and temperature information, wherein the heat transfer model includes a surface radiation model, a floor model and an air-wall model, the surface radiation model is used to determine the radiation heat exchange results of the inner surface of the wall, the ground and the roof at the target moment, the floor model is used to determine the convection heat exchange results between the ground and the indoor air, and the convection heat exchange results between the roof and the indoor air at the target moment, and the air-wall model is used to determine the indoor air temperature at the target moment; The surface radiation model, the floor model and the air-wall model are cyclically utilized to determine a heat transfer result corresponding to the special-shaped room at a target time, wherein the heat transfer result satisfies a preset condition and the heat transfer result includes a radiation heat transfer result, a convection heat transfer result and an indoor temperature.

2. The method according to claim 1, characterized in that The method further comprises: Determine a virtual wall surface corresponding to the irregular-shaped room, and divide the irregular-shaped room into a plurality of sub-rooms by using the virtual wall surface; Based on the virtual wall information and the sub-angle coefficients corresponding to each of the plurality of sub-rooms, a comprehensive angle coefficient corresponding to the irregular-shaped room is determined.

3. The method according to claim 1, characterized in that The preset condition includes at least one of the following: The number of iteration steps corresponding to the heat transfer result is greater than or equal to a preset number of iteration steps; The difference between the heat transfer result and the reference heat transfer information is less than or equal to a preset difference threshold.

4. The method according to claim 1, characterized in that: Determining the heat transfer result corresponding to the special-shaped room at a target time by using the surface radiation model, the floor model and the air-wall model includes: Determine the radiation heat transfer results between the multiple inner surfaces of the special-shaped room based on the physical property information, the temperature information and the surface radiation model; Determine the result of convective heat exchange between the floor and indoor air of the special-shaped room based on the physical property information, the condition information and the floor model; The indoor temperature is determined based on the physical property information, the condition information and the air-wall model.

5. The method according to claim 4, characterized in that The physical property information includes surface geometry information and surface material information of the inner surface, and the inner surface includes a target inner surface and a reference inner surface; Determining radiation heat transfer results between a plurality of inner surfaces of the special-shaped room based on the physical property information, the temperature information and the surface radiation model includes: Determine the angular coefficients of multiple dimensions between the target inner surface and the reference inner surface based on the surface geometric information; Determine incident radiation and absorption factor coefficient using the angular coefficient, the surface geometry information, the surface material information, the temperature information and the net radiation of the target inner surface; The radiation heat transfer result is determined based on the absorption factor coefficient and an absolute temperature value corresponding to the target inner surface.

6. The method according to claim 5, characterized in that The angular coefficient includes a first angular coefficient and a second angular coefficient; Determining angular coefficients in multiple dimensions between the target inner surface and the reference inner surface based on the surface geometric information includes: In a case where the target inner surface and the reference inner surface are parallel to each other, determining the first angular coefficient by using the surface geometric information and a first analysis strategy; In a case where the target inner surface and the reference inner surface are perpendicular to each other, the second view coefficient is determined by using the surface geometric information and a second analysis strategy.

7. The method according to claim 4, characterized in that The floor entity of the special-shaped room includes a buried pipe layer, a covering layer and a floor layer, the physical property information includes buried pipe physical property information corresponding to the buried pipe layer, floor physical property information corresponding to the floor layer, and covering physical property information corresponding to the covering layer, the condition information includes temperature condition information, and the convection heat exchange result includes a first heat exchange result corresponding to the buried pipe layer, a second heat exchange result corresponding to the floor layer, and a third heat exchange result corresponding to the covering layer; Determining the convective heat exchange result between the floor and indoor air of the special-shaped room based on the physical property information, the condition information and the floor model includes: Determine at least one slab layer control volume corresponding to each of the buried pipe layer, the cover layer and the floor layer, and a node analysis strategy corresponding to the slab layer control volume; The node analysis strategy, the floor model, the buried pipe physical property information and the temperature condition information are used to determine the first heat exchange result corresponding to the buried pipe layer; the node analysis strategy, the floor model, the floor slab physical property information and the temperature condition information are used to determine the second heat exchange result corresponding to the floor slab layer; and the node analysis strategy, the floor model, the covering physical property information and the temperature condition information are used to determine the third heat exchange result corresponding to the covering layer.

8. The method according to claim 7, characterized in that The method further comprises: The cycle determines the return water temperature result of the heating entity in the special-shaped room at the target time based on the first heat exchange result, the second heat exchange result and the third heat exchange result.

9. The method according to any one of claims 4 to 6, characterized in that The physical property information includes wall physical property information and air physical property information, the condition information includes outdoor temperature information and solar radiation information, and the special-shaped room includes an inner wall entity, an outer wall entity and an air entity; Determining the indoor temperature based on the physical property information, the condition information and the air-wall model includes: Determine at least one wall control volume corresponding to each of the inner wall entity and the outer wall entity, and a node analysis strategy corresponding to the wall control volume; Determine, based on the node analysis strategy, the physical property information, the condition information and the air-wall model, a fourth heat exchange result corresponding to the inner wall entity and a fifth heat exchange result corresponding to the outer wall entity; The indoor temperature is determined based on the fourth heat exchange result and the fifth heat exchange result.

10. A device for determining radiation heat transfer in a special-shaped room, characterized in that: The device comprises: An information acquisition module, used to acquire physical property information, condition information, virtual wall information and temperature information corresponding to the special-shaped room, wherein the special-shaped room is a polygonal room or curved space with a special-shaped closed cavity and radiation shielding, the virtual wall information represents the wall information after the original wall information of the special-shaped room is processed, the physical property information includes wall physical property parameters, gas physical property parameters and water physical property parameters, and the condition information includes outdoor temperature information, solar radiation information, indoor personnel and equipment heat dissipation information, floor heating water supply temperature and floor heating water supply flow information; a heat transfer model construction module, used to construct a heat transfer model based on the physical property information, condition information, virtual wall information and temperature information, wherein the heat transfer model includes a surface radiation model, a floor model and an air-wall model, the surface radiation model is used to determine the radiation heat exchange results of the inner surface of the wall, the ground and the roof at the target moment, the floor model is used to determine the convection heat exchange results between the ground and the indoor air, and the convection heat exchange results between the roof and the indoor air at the target moment, and the air-wall model is used to determine the indoor air temperature at the target moment; A heat transfer result determination module is used to cyclically utilize the surface radiation model, the floor model and the air-wall model to determine the heat transfer result corresponding to the special-shaped room at a target time, wherein the heat transfer result meets a preset condition and the heat transfer result includes a radiation heat transfer result, a convection heat transfer result and an indoor temperature.

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