Method, processor and program

Abstract

To provide a method capable of appropriately calculating a heat load of a building.SOLUTION: A method for calculating a dynamic heat load for a building comprising an exterior skin and a shielding member adjacent to the exterior skin, executed by a processor, comprises: a process for setting the exterior skin as an exterior element, which is an element in dynamic heat load calculation; a process for setting the shielding member as a shielding element, which is an element in the dynamic heat load calculation; a process for setting a variable boundary surface element, which is an element in the dynamic heat load calculation, on the indoor side of the building relative to the shielding element; and a condition setting process for setting a flow path condition, a heat transfer condition and a light transmittance for the variable boundary surface element.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method, a processing device, or a program. [Background technology]

[0002] As prior art, devices, programs, etc. for performing dynamic heat load calculations are known (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-101880 A [Patent Document 2] Patent No. 6572759 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional dynamic heat load calculations, the heat load of a window was calculated using two fixed performance values: the shading coefficient and the overall heat transfer coefficient. However, for systems that control air circulation and solar shading, performance changes from moment to moment, so accurate heat load calculations could not be performed using only these two performance values: the shading coefficient and the overall heat transfer coefficient. [Means for solving the problem]

[0005] In view of the above problems, one aspect of the present invention provides a method for dynamic heat load calculation for a building having an exterior skin and a shielding member adjacent to the exterior skin, which is executed by a processing device, the method including a process for setting the exterior skin as an exterior element, which is an element in the dynamic heat load calculation, a process for setting the shielding member as a shielding element, which is an element in the dynamic heat load calculation, a process for setting a variable boundary surface element, which is an element in the dynamic heat load calculation, on the indoor side of the building relative to the shielding element, and a condition setting process for setting flow path conditions, heat transfer conditions and light transmission conditions for the variable boundary surface element. Effect of the Invention

[0006] According to the present invention, the thermal load of a building can be calculated appropriately. [Brief description of the drawings]

[0007] [Figure 1] 1 is an outline of a hardware configuration of a processing device according to an embodiment. [Diagram 2] 2 is an outline of a functional configuration (software configuration) of a processing device in an embodiment. [Figure 3A] 1A to 1E are explanatory diagrams showing the configuration of a building that is modeled in the embodiment. [Figure 3B] 1(f) to (g) are explanatory diagrams showing the configuration of a building that is modeled in the embodiment. [Figure 4] FIG. 2 is an explanatory diagram illustrating a configuration of a model in an embodiment. [Diagram 5] FIG. 13 is an explanatory diagram showing the specifications of a model of a building with a normal perimeter in an embodiment. [Figure 6] FIG. 2 is an explanatory diagram showing the specifications of a model of a building in which an air barrier is installed in an embodiment. [Figure 7] FIG. 2 is an explanatory diagram showing the specifications of a model of a building in which a push-pull type air barrier is installed in an embodiment. [Figure 8] FIG. 2 is an explanatory diagram showing specifications of a model of a building in which an airflow window is installed in an embodiment. [Figure 9] FIG. 10 is an explanatory diagram showing the specifications of a model of a building in which an airflow screen is installed in an embodiment, with the roller screen lowered. [Figure 10] FIG. 11 is an explanatory diagram showing the specifications of a model of a building in which an airflow screen is installed in an embodiment, with the roller screen in a raised position. [Figure 11] FIG. 2 is an explanatory diagram showing the specifications of a model of a building in which an air barrier is installed to ventilate through a blind hollow layer in an embodiment. [Figure 12] FIG. 2 is an explanatory diagram showing the specifications of a model of a building in which a push-pull type air barrier that provides ventilation through a blind hollow layer is installed in an embodiment. [Figure 13] 1 is a flowchart of a process according to an embodiment. [Figure 14] FIG. 4 is a diagram showing specifications and configurations used in calculating solar heat gain in an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] <Embodiment> A processing apparatus 1 according to an embodiment of the present invention will be described below. The processing apparatus 1 is capable of performing dynamic heat load calculations.

[0009] Fig. 1 shows an example of hardware used to realize the processing device 1. As shown in the figure, the processing device 1 includes a processor 101, a main memory device 102, an auxiliary memory device 103, an input device 104, an output device 105, and a communication device 106. These are connected to each other so as to be able to communicate with each other via communication means such as a bus (not shown).

[0010] Incidentally, the entire configuration of the processing device 1 does not necessarily need to be realized by hardware, and all or a part of the configuration may be realized by virtual resources such as a cloud server of a cloud system. Also, the processing device 1 does not necessarily need to be configured by a single device.

[0011] The processor 101 is configured using a CPU (Central Processing Unit), an MPU (Micro Processing Unit), etc. The processor 101 reads out and executes a program stored in a main memory device 102, thereby implementing the functions of the processing device 1.

[0012] The main memory device 102 is a device that stores programs and data, and is a ROM (Read Only Memory), a RAM (Random Access Memory), a non-volatile semiconductor memory (NVRAM (Non Volatile RAM)), etc. The auxiliary memory device 103 is various non-volatile memories (NVRAM: Non Volatile RAM) such as SSDs (Solid State Drives) and SD memory cards, hard disk drives, optical memory devices (CDs (Compact Discs), DVDs (Digital Versatile Discs), etc.), storage areas of cloud servers, etc.

[0013] The input device 104 is an interface that accepts input of information, and is, for example, a keyboard, a mouse, a touch panel, a card reader, a voice input device (such as a microphone), a voice recognition device, etc. The processing device 1 may be configured to accept input of information between it and another device via the communication device 106.

[0014] The output device 105 is an interface that outputs various types of information, such as a screen display device (such as a liquid crystal monitor, LCD (Liquid Crystal Display), a graphic card, a printer, etc.), a voice output device (such as a speaker), a voice synthesizer, etc. The processing device 1 may be configured to output information between itself and other devices via the communication device 106. The output device 105 corresponds to the display unit in the present invention.

[0015] The communication device 106 is a wired or wireless communication interface that realizes communication with other devices via a network, such as a NIC (Network Interface Card), a wireless communication module, a USB (Universal Serial Bus) module, a serial communication module, etc.

[0016] [Functional configuration] 2 shows the main functional configuration of the processing device 1. As shown in the figure, the processing device 1 includes a storage area 110 and a management unit 120.

[0017] The functions of the management unit 120 are realized by the processor 101 reading and executing a program stored in the main storage device 102 or the auxiliary storage device 103. The management unit 120 performs processes such as dynamic heat load calculations, the details of which will be described later.

[0018] The storage area 110 is formed in the main storage device 102 or the auxiliary storage device 103. In the storage area 110, a model M for dynamic heat load calculation and setting conditions for the heat load calculation of the model M are stored.

[0019] [Buildings and models] Here, model M is a model of buildings B1-B5 (shown in Fig. 3A) that are the subject of the heat load calculation, which is created for dynamic heat load calculation. Note that the directions of up and down, indoor (occupied) side, outside, etc. in model M and buildings B1-B5 are defined as shown in Fig. 3A based on the design of buildings B1-B5.

[0020] 3A(a), the building B1 at least comprises a window W that constitutes the outer skin of the building B1, a blind BL that is arranged adjacent to the window W on the indoor side of the window W, a ceiling C that is provided above the window W and the blind BL, and an indoor floor surface FL. Various materials can be used for the blind BL, and specific examples include a roller blind and a blind.

[0021] In addition to the windows W, ceiling C, and blinds BL of building B1, various other building equipment may be considered as the target of dynamic heat load calculation. Buildings equipped with such equipment are shown as buildings B2-B5 in Figure 3A(b)-(e).

[0022] Building B2 is a building that forms an air barrier in the perimeter. As shown in Fig. 3A(b), building B2 has windows W, a ceiling C, a floor FL, and blinds BL, and further has a fan F1 installed on the ceiling C. The fan F1 is placed on the indoor side of the blinds BL and has the function of drawing in air from the room.

[0023] Building B3 is a building that forms a push-pull type air barrier in the perimeter. Specifically, as shown in Fig. 3A(c), building B2 is equipped with a window W, a ceiling C, a floor FL, and a blind BL, as well as a fan F1 and a supply fan F2 installed below the window W. The supply fan F2 is located on the indoor side of the blind BL and can send air into the room.

[0024] Building B4 is a building that forms an airflow window in the perimeter. Specifically, as shown in FIG. 3A(d), building B4 further includes a fan F1 and a glass wall GL in addition to a window W, a ceiling C, a floor FL, and a blind BL. The glass wall GL is disposed on the indoor side of the window W and the blind BL, and forms a slit S between the glass wall GL and the floor FL. Air in the room passes through the slit S and further through a space (also called an airflow hollow layer) formed between the blind BL and the glass wall GL, and is drawn into the fan F1.

[0025] Building B5 is a building that forms an airflow screen in the perimeter. Specifically, as shown in FIG. 3A(e), building B4 further includes a fan F1 and a roller screen RS installed on the indoor side of the blind BL in addition to the window W, ceiling C, floor FL, and blind BL. The roller screen RS can be controlled to be raised and lowered. When the roller screen RS is lowered, a slit S is formed between the roller screen RS and the floor FL. The air in the room passes through the slit S and further through the space (airflow hollow layer) formed between the blind BL and the roller screen RS, and is sucked into the fan F1.

[0026] Building B6 is a building that forms an air barrier in the perimeter. Specifically, as shown in FIG. 3B(f), building B6 is equipped with windows W, a ceiling C, a floor FL, and blinds BL, as well as a fan F1 disposed above the ceiling C and between the blinds BL and the windows W. Indoor air passes through the blinds BL or slits S, and further through a space (also called a blind hollow layer) formed between the blinds BL and the windows W, and is drawn in by the fan F1.

[0027] Building B7 is a building that forms a push-pull type air barrier in the perimeter. Specifically, as shown in FIG. 3B(g), building B7 includes a window W, a ceiling C, a floor FL, and a blind BL, as well as a fan F1 arranged above the ceiling C and a fan F2 arranged below the floor FL. Both fans F1 and F2 are arranged between the blind BL and the window W. Fan F2 sends air into a space (blind hollow layer) formed between the blind BL and the window W. Fan F1 also takes in air from the blind hollow layer.

[0028] As shown in Fig. 4, the model M includes an envelope element MW that models a window W, and a shading element MSH that models a blind BL. In addition, the model M includes a variable boundary surface element MV arranged on the indoor side of the shading element MSH. By these elements MW, MSH, and MV, the space of the buildings B1-B5 is divided into a blind cavity layer, an airflow cavity layer, and an occupied room, going from the exterior to the indoor side.

[0029] In addition to thermal resistance, the variable boundary surface element MV also has light transmittance, thermal conductivity, volumetric specific heat, and density, as well as flow path conditions, set based on the physical properties of the blind BL. The light transmittance corresponds to the light transmittance condition of the variable boundary surface element MV, and in addition to thermal resistance, the thermal conductivity, volumetric specific heat, and density each correspond to the heat transfer condition of the variable boundary surface element MV. The flow path conditions set the conditions for air flow, and specifically include at least one of the flow coefficient and air volume.

[0030] As an example of the element setting of the variable boundary surface element MV, it is possible to form it as a composite of two elements, a window element and an interior wall element. The window element has a heat transmission coefficient of zero, and the solar transmittance and reflectance are set according to the physical properties of the material modeled by the variable boundary surface element MV. On the other hand, the solar transmittance of the interior wall element is set to zero, and in addition to the thermal resistance, the thermal conductivity, volumetric specific heat, and density are set to values ​​equal to the thermal conductivity, volumetric specific heat, and density of the material modeled by the variable boundary surface element MV. In addition, the heat removal weighting coefficient of the interior wall element is included in the heat removal weighting coefficient for room temperature fluctuation. As a result of the combination of calculations using the two elements, the window element and the interior wall element, the heat load calculation using the model M is performed appropriately, making it possible to appropriately simulate the heat load in buildings B1-B5.

[0031] In the variable boundary surface element MV, three circuit nodes are set: circuit node C1 at the top of the variable boundary surface, circuit node C2 at the bottom of the variable boundary surface, and circuit node C3 at the variable boundary surface slit (Fig. 4). In addition, circuit node C4 at the ceiling exhaust port is set at the top of the airflow cavity. At each of these circuit nodes C1-C4, the flow path conditions, which are the conditions for air flow, are set according to the building being calculated.

[0032] Circuit node C1 corresponds to the air flow path passing through the upper part of the variable boundary surface V, and circuit node C2 corresponds to the air flow path passing through the lower part of the variable boundary surface V. Circuit node C3 indicates the air flow path sent by the slit S or the supply fan F2. Circuit node C4 corresponds to the air flow path taken in by the intake fan F1.

[0033] As for the exterior element MW and the shielding element MSH, in addition to the thermal resistance, the light transmittance, the thermal conductivity, the volumetric specific heat, and the density are set based on the physical properties of the exterior element MW and the blind BL.

[0034] In the shielding element MSH, two circuits are set: circuit node C5 above the blind and circuit node C6 below the blind. Circuit node C5 corresponds to the air flow path that passes above the blind BL, and circuit node C6 corresponds to the air flow path that passes below the blind BL. For circuit nodes C5 and C6, the flow path conditions, which are the conditions for air flow, are set according to the building to be calculated.

[0035] Although details will be described later, the circuit, flow coefficient, air volume, thermal resistance, and light transmittance are set for each circuit node C1-C7 of the model M. The circuit conditions for each circuit node C1-C7 are set as the air flow path as described above.

[0036] Specific setting examples of model M are shown in Fig. 5 to Fig. 9. Fig. 5 to Fig. 9 show examples of modeling buildings B1 to B5, which are referred to as models M1 to M5, respectively. In other words, M1 to M5 have the same element configuration as model M shown in Fig. 4, but the specific setting contents such as heat transfer conditions in each element are different. In other words, model M can be said to be a general-purpose model or standard model that can be used for buildings with various perimeters or window systems.

[0037] (Model M1) For model M1, which is a model of building B1, the calculation conditions are set as shown in Figure 5. In building B1, the perimeter is composed only of windows W and blinds BL, and no shielding materials are installed inside the room beyond the blinds BL.

[0038] In model M1, there is no actual equipment equivalent to the variable boundary surface element MV. Therefore, as shown in Figure 5, the circuit nodes C1-C3 of model M1 are set to have no air resistance (flow coefficient: α = 1). Also, rather than forcing air to flow, they are set to ventilate according to the surrounding ventilation (air volume: "normal"). The variable boundary surface element MV has no thermal resistance (thermal resistance: R = 0), and is set to transmit all light (light transmittance: τ = 1).

[0039] Circuit node C4 of model M1 is set as airtight (air volume: zero) because there is no fan F1 in building B1.

[0040] At the circuit nodes C5 and C6, the flow path conditions are set as a slat function according to the state of the slats of the blinds BL. That is, the flow path conditions are set according to the state of the blinds BL (air flow rate: "normal") between the state where the slats are open and there is no resistance (slat function = 1) and the state where air does not pass through (slat function = 0). The same is true for the light transmittance, which is set according to the state of the blinds BL between the state where light passes through (slat function = 1) and the state where light does not pass through (slat function = 0).

[0041] The thermal resistance of the circuit nodes C5 and C6 is R according to the state of the blind BL. BL It is set as a function of the thermal resistance (R BL =0), or higher, the heat-resistant state (R BL =1) is set according to the state of the blind BL.

[0042] Circuit node C7 is set as a free opening that supplies air into the building, so the air volume is set as "market."

[0043] (Model M2) For model M3, which models building B2 with an air barrier installed on the perimeter, the calculation conditions are set as shown in Figure 6.

[0044] In model M2, there is no actual equipment corresponding to the variable boundary surface element MV. Therefore, for circuit nodes C1-C3, the same conditions as for circuit nodes C1-C3 in model M1 are set, as shown in FIG.

[0045] For the circuit node C4 of the model M2, the exhaust air volume by the fan F1 is set as shown in FIG.

[0046] The same conditions are set for the circuit nodes C5-C7 of the model M2 as for the circuit nodes C5-C7 of the model M1, because the configuration of the blinds BL is the same in the buildings B1 and B2.

[0047] (Model M3) For model M3, which models building B3 with a push-pull type air barrier installed on the perimeter, the calculation conditions are set as shown in Figure 7.

[0048] In model M3, there is no actual equipment corresponding to the variable boundary surface element MV. Therefore, for circuit node C1-C2 of model M3, the same conditions as for circuit node C1-C2 of model M1 are set, as shown in FIG.

[0049] At circuit node C3 of model M3, the volume of air supplied by fan F2 into the room (air volume: forced air volume) is set.

[0050] For the circuit node C4 of the model M3, the exhaust air volume of the fan F1 is set as shown in FIG.

[0051] The same conditions are set for the circuit nodes C5-C7 of the model M3 as for the circuit nodes C5-C7 of the model M1, because the configuration of the blinds BL is the same in the buildings B1 and B3.

[0052] (Model M4) For model M4, which models building B4 with airflow windows installed on the perimeter, the calculation conditions are set as shown in Figure 8.

[0053] In model M4, the glass wall GL corresponds to the variable boundary surface element MV. Therefore, as shown in Figure 8, the circuit nodes C1 and C2 of model M4 are set to a condition that does not allow air to pass through (flow coefficient: α ≒ 0). Also, instead of forcing air to flow, it is set to ventilate according to the surrounding ventilation (air flow rate: "normal"). The thermal resistance of the variable boundary surface element MV is set to a value equivalent to the thermal resistance of the glass that makes up the glass wall GL (thermal resistance: R GLASS), and the transmitted light is set as a function determined by the angle of incidence on the glass (light transmittance: function of angle of incidence).

[0054] At circuit node C3 of model M4, a flow coefficient is set when air passes through slit S. In this embodiment, the flow coefficient is set to 0.7 as shown in the figure, but other values ​​can be used depending on the size, shape, etc. of slit S.

[0055] For the circuit node C4 of the model M4, the exhaust air volume by the fan F1 is set as shown in FIG.

[0056] The same conditions are set for the circuit nodes C5-C7 of the model M4 as for the circuit nodes C5-C7 of the model M1, because the blinds BL have the same configuration in the buildings B1 and B4.

[0057] (Model M5) For model M5, which is a model of building B5 with an airflow screen installed in the perimeter, the calculation conditions are set as shown in Figures 9 and 10. Figure 9 shows the conditions when the roller screen RS is lowered, and Figure 10 shows the conditions when the roller screen RS is raised.

[0058] In model M5, the roller blind RS corresponds to the variable boundary surface element MV. Therefore, when the roller blind RS is lowered (simply referred to as "RS lowered"), as shown in Figure 9, for circuit nodes C1 and C2 of model M5, the airflow is set based on the static pressure vs. airflow characteristic curve corresponding to the roller blind RS (airflow: PQ curve). The thermal resistance of the variable boundary surface element MV is set to a value equivalent to the thermal resistance of the roller blind RS that constitutes the glass wall GL (thermal resistance: R RS ), and the light transmittance is set based on the physical properties of the roll screen RS (light transmittance: τ RS ).

[0059] At circuit node C3 (RS down), a flow coefficient is set when air passes through slit S. In this embodiment, the flow coefficient is set to 0.7 as shown in the figure, but other values ​​may be used depending on the size, shape, etc. of slit S.

[0060] When the roller blind RS is raised (simply referred to as "RS raised"), there is no entity that corresponds to the variable boundary surface element MV. Therefore, the circuit node C1-C3 (RS raised) of model M5 is set to the same setting as the circuit node C1-C3 of model M1 (Figure 10).

[0061] For the circuit node C4 of the model M5, the exhaust air volume by the fan F1 is set as shown in Figs. 9 and 10, regardless of whether the roller blind RS is up or down.

[0062] For the circuit nodes C5-C7 of model M5, the same conditions as those for the circuit nodes C5-C7 of model M1 are set regardless of the top or bottom of the roller blind RS (Figures 9 and 10). This is because the configuration of the blinds BL is the same in buildings B1 and B5.

[0063] (Model M6) In model M6, which models building B6 with an air barrier installed in the perimeter, the calculation conditions are set as shown in Figure 11. In model M6, the blinds BL correspond to the variable boundary surface elements MV. Therefore, as shown in Figure 11, for circuit nodes C1 and C2 of model M6, the flow path conditions are set as slat functions according to the state of the slats of the blinds BL, similar to circuit nodes C5 and C6 of model M1.

[0064] At circuit node C3 of model M6, a flow coefficient is set when air passes through slit S. In this embodiment, it is assumed that the blinds BL are lowered, and no flow coefficient is set as shown in the figure, but a value between 0 and 1 can be used for the flow coefficient depending on the size, shape, etc. of the slit S.

[0065] At the circuit node C4 of the model M6, the exhaust air volume by the fan F1 is set as shown in FIG.

[0066] At the circuit nodes C5 and C6 of model M6, there is no corresponding component. Therefore, as shown in Fig. 11, for the circuit nodes C5 and C6 of model M6, it is set as having no air resistance (flow coefficient: α = 1), ventilating according to the surrounding ventilation (air flow: "normal"), no thermal resistance (thermal resistance: R = 0), and transmitting all light (light transmittance: τ = 1).

[0067] At the circuit node C7 of the model M6, the same conditions as those at the circuit node C7 of the model M1 are set (FIG. 11).

[0068] (Model M7) In model M7, which models building B7 with a push-pull type air barrier installed on the perimeter, the calculation conditions are set as shown in Figure 12. In model M7, the blinds BL correspond to the variable boundary surface element MV. Model M7 has the same configuration as model M6, except for the condition that fan F2 is present. Therefore, the circuit nodes C1, C2, and C4-C7 of model M7 are set in the same way as the circuit nodes C1, C2, and C4-C7 of model M6, respectively.

[0069] At circuit node C3 of model M7, the volume of air (air volume: forced air volume) supplied by fan F2 into the room is set. At circuit node C3 of model M7, the flow coefficient when air passes through slit S is set. In this embodiment, it is assumed that the blinds BL are lowered, and no flow coefficient is set as shown in the figure, but a value between 0 and 1 can be used for the flow coefficient depending on the size, shape, etc. of the slit S.

[0070] [Processing details] A description will now be given of the processing executed in the processing device 1. The management unit 120 executes the processing shown in FIG.

[0071] First, the management unit 120 reads out the model M from the memory area 110 and acquires the calculation conditions according to the calculation step (S1). That is, the management unit 120 sets the model M according to the shapes of the buildings B1-B5. For example, if the building B1 is the target of the heat load calculation, the model M1 is set in the memory area 110 and read out.

[0072] The calculation conditions are the light transmission conditions, heat transfer conditions, and conditions of each circuit node, as shown in Figures 5 to 10. Each condition needs to be obtained for each calculation step according to the open / closed state of the blinds BL, the raised / lowered state of the roller screen RS, etc. A specific example of a calculation step is the use of time.

[0073] Next, the management unit 120 calculates the solar heat gain (S2). In this process, a heat balance equation is established for each node to create simultaneous equations, and the solar heat gain is found from each node temperature by solving these simultaneous equations. In this process, as shown in Figure 12, a calculation model is constructed by nodes assigned to each element and edges connecting the nodes. Each edge is assigned heat transfer coefficients α0, α r1 ~α r5 , α c1 ~α c5 are assigned. Each edge transfers heat between nodes according to the assigned heat transfer coefficient. Note that Fig. 11 shows only one example of modeling, and various other modeling methods are possible. In Fig. 11, the number of nodes is set to one for each element MW, MSH, and MV, but it is also possible to set two nodes, one above and one below, or to create a model that takes into account a lower slit.

[0074] In step S3, the management unit 120 executes an air volume calculation (S3). The management unit 120 obtains the air volume flowing through each node based on the flow path conditions set at the circuit nodes C1-C7.

[0075] In step S5, the management unit 120 calculates the indoor dimming rate. The indoor lighting is controlled to change according to the time of day or the state of the blinds BL. In step S5, the indoor dimming rate according to the lighting control state is calculated. In the calculation of the indoor dimming rate, a light transmittance corresponding to the calculation step is set for each of the envelope element MW, the shielding element MSH, and the variable boundary surface element MV. A light transmittance may be set for each of the circuit nodes C1-C7.

[0076] In step S7, it is determined whether the values ​​of the heat transfer condition, light transmission condition, solar heat gain, air volume, and indoor dimming rate have converged. The heat transfer condition, light transmission condition, solar heat gain, air volume, and indoor dimming rate are mutually dependent calculation conditions, for example, the indoor dimming rate or air volume cannot be accurately calculated if the solar heat gain is not obtained. Therefore, if the values ​​have not converged (S7: NO), steps S1-S5 are repeated to converge the calculated heat transfer condition, light transmission condition, solar heat gain, air volume, and indoor dimming rate.

[0077] There are various possible methods for determining convergence. For example, convergence can be determined when, while repeating the calculations of steps S1-S5, the values ​​of the heat transfer conditions, light transmission conditions, solar heat gain airflow, and indoor dimming rate, or the change in any of these values, falls below a threshold value.

[0078] If the heat transfer conditions, light transmission conditions, solar heat gain, air volume, and indoor dimming rate have converged (S7: YES), the management unit 120 executes a heat load calculation in the model M based on these conditions. Methods for calculating the heat load include a method using HASP or New HASP, which are programs provided by the Building Equipment Engineers Association. When using HASP or New HASP, a method may be adopted in which the parameters used in HASP or New HASP are replaced with the heat transfer conditions, light transmission conditions, solar heat gain, air volume, and indoor dimming rate obtained in steps S1-S5 (Patent Document 2).

[0079] After the heat load calculation, the management unit 120 increments the calculation step (S9). As a specific example, when a time history is used for the calculation step, a predetermined time increment Δt is added to the time t at which the calculation is performed. In this manner, the processing of steps S1-S9 is repeated while proceeding with the calculation step until the heat load calculation is completed up to a predetermined calculation step (S11: NO).

[0080] If all calculation steps have been completed (S11: YES), the management unit 120 ends the process relating to the heat load calculation.

[0081] <Effects> (Mode 1) The processing device 1 of the above embodiment is a method for dynamic heat load calculation for buildings B1-B5 equipped with a window W (corresponding to an outer skin) and a blind BL (corresponding to a shading member) adjacent to the window W, and executes a process (S1) of setting the window W as an outer skin element MW, which is an element in the dynamic heat load calculation, a process (S1) of setting the blind BL as a shading element MSH, which is an element in the dynamic heat load calculation, a process (S1) of setting a variable boundary surface element MV, which is an element in the dynamic heat load calculation, on the indoor side of building B relative to the shading element MSH, and a condition setting process (S1) of setting flow path conditions, heat transfer conditions and light transmission conditions for the variable boundary surface element MV.

[0082] In the above configuration, by setting a standard model M having a variable boundary surface element MV, it becomes possible to appropriately perform heat load calculations corresponding to various types of perimeters in buildings B1-B5. Model M can also be used with various high-performance window systems such as push-pull type airflow.

[0083] (Mode 2) In Mode 1, the variable interface element MV has multiple circuit nodes C1-C7 (corresponding to calculation points) corresponding to the upper part, lower part, and slit, respectively, and flow path conditions, heat transfer conditions, and light transmission conditions are set for each of the circuit nodes C1-C7 (Figures 5-10).

[0084] By setting the variable boundary surface element MV as in the above configuration, it becomes possible to appropriately perform heat load calculations for buildings B1-B7 having various perimeters.

[0085] (Mode 3) In modes 1 and 2, the dynamic heat load calculation is performed in a plurality of calculation steps, and in each of the plurality of calculation steps, the corresponding flow path conditions, heat transfer conditions, and light transmission conditions are set (S1).

[0086] In the above configuration, the flow path conditions, heat transfer conditions, and light transmission conditions, which change for each calculation step (e.g., time) due to various factors such as the shading state of the blinds BL, the raising and lowering of the roller screen RS, starting and stopping of fans F1 and F2, temperature, and dimming, can be appropriately set on the model M, and an appropriate heat load calculation can be performed.

[0087] (Mode 4) In any of modes 1 to 3, each calculation step includes a process (S3) of calculating the air volume at the variable boundary surface element MV to obtain the step air volume, a process (S1) of executing a condition setting process to set flow path conditions, heat transfer conditions and light transmission conditions corresponding to the step air volume to obtain the step flow path conditions, step heat transfer conditions and step light transmission conditions, respectively, and a process (S8) of calculating the thermal load of the building based on the step air volume, step flow path conditions, step heat transfer conditions and step light transmission conditions.

[0088] In the above configuration, the air volume that changes for each calculation step can be appropriately set on the model M, and an appropriate heat load calculation can be performed.

[0089] (Aspect 5) In any of Aspects 1 to 4, each calculation step further includes a process (S5) for determining an indoor dimming rate of building B and setting it as a step dimming rate. Each calculation step also includes a process (S1) for executing a condition setting process, setting a flow path condition, a heat transfer condition, and a light transmission condition corresponding to the step dimming rate as the step flow path condition, the step heat transfer condition, and the step light transmission condition, respectively, and a process (S8) for calculating the heat load of the building based on the step dimming rate, the step flow path condition, the step heat transfer condition, and the step light transmission condition.

[0090] In the above configuration, the dimming rate, which changes for each calculation step, can be appropriately set on the model M, and an appropriate heat load calculation can be performed.

[0091] (Mode 6) In any of modes 1 to 5, each calculation step includes a process (S2) of calculating the solar heat gain at the variable boundary surface element MV and setting it as the step solar heat gain, a process (S1) of executing a condition setting process, setting the flow path conditions, heat transfer conditions and light transmission conditions corresponding to the step solar heat gain as the step flow path conditions, step heat transfer conditions and step light transmission conditions, respectively, and a process (S8) of calculating the thermal load of the building based on the step solar heat gain, the step flow path conditions, the step heat transfer conditions and the step light transmission conditions.

[0092] In the above configuration, the solar radiation heat gain, which changes for each calculation step, can be appropriately set on the model M, and an appropriate heat load calculation can be performed.

[0093] (Aspect 7) In any of aspects 1 to 6, the step airflow is calculated by setting circuit nodes C1-C3 on the variable boundary surface element MV and providing flow path conditions corresponding to each step for each circuit node.

[0094] In the above configuration, the air volume that changes for each calculation step can be appropriately set on the model M, and an appropriate heat load calculation can be performed.

[0095] (Embodiment 8) In any of embodiments 1 to 7, the step dimming ratio is calculated by setting light transmission conditions corresponding to each step for each of the envelope element MW, the shielding element MSH, and the variable interface element MV.

[0096] In the above configuration, the indoor dimming rate, which changes for each calculation step, can be appropriately set on the model M, and an appropriate heat load calculation can be performed.

[0097] (Aspect 9) In any of aspects 1 to 8, the step solar heat gain is calculated by formulating a heat balance equation corresponding to each step for each of the envelope element MW, the shading element MSH, and the variable interface element MV.

[0098] In the above configuration, the solar radiation heat gain, which changes for each calculation step, can be appropriately set on the model M, and an appropriate heat load calculation can be performed.

[0099] (Aspect 10, Aspect 11) The above embodiment presents the processing device 1 for implementing the method of any one of aspects 1 to 9, and the program for causing the processing device 1 to execute the method.

[0100] <Modification> In the above embodiment, the number or positions of nodes or circuit points in each of the exterior element MW, the shielding element MSH, and the variable boundary surface element MV can be changed according to the conditions of the building B, etc.

[0101] In the embodiment, equipment other than the window W may be installed as the exterior skin. In addition, the member used as the shielding member is not limited to the blind BL. For example, a roller blind RS may be disposed instead of the blind BL, or other shielding members such as curtains may be used. [Explanation of symbols]

[0102] Building B1-B7, windows W, ceiling C, floor F, glass wall GL, roller screen RS, fans F1, F2, blinds BL Model M, M1-M7 Skin element MW, shielding element MSH, variable boundary surface element MV

Claims

1. 1. A method for dynamic heat load calculation for a building having an envelope and a shielding member adjacent to the envelope, the method comprising: A process of setting the outer skin as an outer skin element which is an element in the dynamic heat load calculation; A process of setting the shielding member as a shielding element which is an element in the dynamic heat load calculation; A process of setting a variable boundary surface element, which is an element in the dynamic heat load calculation, on the indoor side of the building with respect to the shielding element; a condition setting process for setting a flow path condition, a heat transfer condition, and a light transmission condition for the variable boundary surface element; The method includes:

2. the variable interface element has a plurality of calculation points corresponding to an upper portion, a lower portion, and a slit, respectively; The method according to claim 1 , wherein a flow path condition, a heat transfer condition, and a light transmission condition are set for each of the plurality of calculation points.

3. The condition setting process is executed in a plurality of calculation steps of the dynamic heat load calculation, In each of the plurality of calculation steps, a corresponding flow path condition, a heat transfer condition, and a light transmission condition are set. The method of claim 1.

4. Among the plurality of calculation steps, each step is A process of calculating an air volume in the variable boundary surface element and setting the calculated air volume as a step air volume; a process of executing the condition setting process to set flow path conditions, heat transfer conditions, and light transmission conditions corresponding to the step air volume, as step flow path conditions, step heat transfer conditions, and step light transmission conditions, respectively; A process of calculating a heat load of the building based on the step air volume, the step flow path condition, the step heat transfer condition, and the step light transmission condition. The method according to claim 3.

5. Among the plurality of calculation steps, each step is The indoor dimming rate of the building is calculated and set as a step dimming rate. A process of executing the condition setting process to set a flow path condition, a heat transfer condition, and a light transmission condition corresponding to the step dimming rate as a step flow path condition, a step heat transfer condition, and a step light transmission condition, respectively; A process of calculating a heat load of the building based on the step dimming rate, the step flow path condition, the step heat transfer condition, and the step light transmission condition. The method according to claim 3.

6. Among the plurality of calculation steps, each step is A process of calculating the solar radiation heat gain at the variable boundary surface element and setting the calculated solar radiation heat gain as a step; A process of executing the condition setting process to set flow path conditions, heat transfer conditions, and light transmission conditions corresponding to the step solar radiation heat acquisition, as step flow path conditions, step heat transfer conditions, and step light transmission conditions, respectively; A process of calculating a heat load of the building based on the step solar heat gain, the step flow path condition, the step heat transfer condition, and the step light transmission condition. The method according to claim 3.

7. The step air volume is: The method according to claim 4 , wherein the calculation is performed by setting circuit nodes on the variable boundary surface elements and providing flow path conditions corresponding to each of the steps for each of the circuit nodes.

8. The step dimming rate is The method according to claim 5 , wherein the calculation is performed by setting light transmission conditions corresponding to each of the steps for each of the outer skin element, the shielding element, and the variable interface element.

9. The step of solar heat acquisition includes: The method of claim 6 , wherein the calculation is performed by formulating heat balance equations corresponding to each of the steps for the skin elements, the shielding elements, and the variable interface elements.

10. A processing device for carrying out the method according to any one of claims 1 to 9.

11. A program for causing a processor to execute the method according to any one of claims 1 to 9.

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