Energy cascade convection radiation coupling tail end system based on intermittent heat and cold supply

Abstract

The invention relates to the technical field of intermittent heating and cooling, in particular to an energy cascade convection radiation coupling end system based on intermittent heating and cooling, and the system comprises a planning unit which is used for forming a corresponding guidance model; the mounting unit is used for forming a corresponding operation room; the sensing unit is used for detecting a flowing heat source; the comparison unit is used for updating the three-dimensional model as a new guidance model; the regulation and control unit is used for switching different operation conditions of the convection end equipment and the radiation end equipment according to the number of people in each area in the operation room and the number of the heating equipment in each area in the operation room; according to the energy cascade convection radiation coupling tail end system based on intermittent heat and cold supply, the mode that all the devices are arranged is adopted, the different heat exchange effects of the convection tail end and the radiation tail end are achieved, the using chain of each part of energy is prolonged, the effects of energy conservation and emission reduction are achieved, and the accuracy of the energy cascade convection radiation coupling tail end system based on intermittent heat and cold supply is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of intermittent heating and cooling, and in particular to an energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling. Background Art

[0002] Today's office buildings and rural buildings are suitable for intermittent heating or cooling to reduce energy waste because people are not in the building all the time. In intermittent heating and cooling, convection terminals represented by air conditioners and fan coils and radiation terminals represented by radiators and radiation panels are often used as the main heating terminals for heating or cooling to adjust the indoor temperature. Intermittent heating or cooling requires rapid heating or cooling and maintaining indoor thermal comfort. When the convection terminal operates alone, although the indoor temperature rises or cools quickly, the indoor temperature is unevenly distributed due to strong forced convection, resulting in poor thermal comfort. In addition, due to the poor thermal inertia of the convection terminal, when it stops operating, the indoor temperature drops or rises quickly, and the initial temperature when heating again is low or high. When the radiation terminal operates alone, although the indoor thermal comfort is good, the heating or cooling is slow, which cannot meet the requirements of rapid heating or cooling of intermittent heating or cooling. Therefore, coupling the convection terminal and the radiation terminal to form a convection-radiation coupling terminal can not only take into account the advantages of rapid heating or cooling of convection radiation, but also have the advantages of good thermal comfort of the radiation terminal. Therefore, it is necessary to develop a convection-radiation coupling terminal system that utilizes cascade energy and is suitable for intermittent heating or cooling and can switch modes.

[0003] Chinese Patent Authorization Announcement No.: CN114396674B discloses a convection and radiation dual-effect zoned temperature control desk. The invention discloses a convection or radiation dual-effect zoned temperature control desk, with a slit-shaped louver vent above the desk and an arc-shaped electric heating radiation plate below; the slit-shaped louver vent faces the breathing area of ​​the office worker, the slit-shaped louver vent is directly connected to the fresh air duct, the axial direction of the arc-shaped electric heating radiation plate is vertical, and its inner arc surface faces the leg area of ​​the office worker; the arc-shaped electric heating radiation plate is arranged by a rotating hinge mechanism so that it can rotate to adjust the orientation of its inner arc surface. The invention has the functions of convection fresh air supply on the desk and radiation heating under the desk, and can perform segmented temperature control on the upper and lower areas of the desk. In the winter heating state, fresh air is provided to the human breathing area through the louver vent, which helps to protect human health and improve work efficiency. The arc-shaped electric heating radiation panel heats the human legs, which meets the human comfort requirement of "warm feet and cool head" in winter, and is more energy-efficient than indiscriminate heating of the entire space.

[0004] Chinese patent application publication number: CN108562032A discloses a unified terminal for coupled heat exchange of radiation and convection. The invention provides a unified terminal for coupled heat exchange of radiation and convection, including a terminal body, a radiation heat exchange component, a convection heat exchange component, and a water supply and return component; the radiation heat exchange component is arranged on the outer side of the terminal body, including a radiation heat exchange plate, and a cavity for the flow of heat exchange medium is provided inside the radiation heat exchange plate, and the cavity inside the radiation heat exchange component is connected with the water supply and return component, and the convection heat exchange component is arranged inside the terminal body, including a convection heat exchange tube and a fin, and the two ends of the convection heat exchange tube are respectively connected with the above cavity and the water supply and return component, and a fan is provided inside the terminal body. The beneficial effects of the invention are: the unified terminal has a simple structure, is compact as a whole, occupies a small space, and has a high heat exchange efficiency, fully utilizing the complementary advantages of the two heat exchange modes of convection and radiation, and can flexibly respond to different indoor comfort requirements.

[0005] However, the above method has the following problems: it is not possible to effectively provide targeted heating or cooling according to the air flow conditions combined with the people and equipment in the room, and it is not possible to provide heating or cooling according to the temperature requirements of different areas in the room. Summary of the invention

[0006] To this end, the present invention provides an energy-grade convection-radiation coupling terminal system based on intermittent heating and cooling, so as to overcome the problems in the prior art that it is impossible to effectively provide targeted heating or cooling according to the air flow conditions in combination with the personnel and equipment in the room, and it is impossible to provide heating or cooling according to the temperature requirements of different areas in the room.

[0007] To achieve the above-mentioned purpose, the present invention provides an energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling, comprising:

[0008] A planning unit, which is used to determine the initial air flow in the initial room according to the three-dimensional model of the initial room and the physical characteristics of the initial room, and form a corresponding guidance model;

[0009] An installation unit, which is connected to the planning unit and is used to place convection terminal devices and radiation terminal devices in response to the guidance model and form corresponding operation rooms;

[0010] A sensing unit connected to the installation unit, for detecting the running air flow according to the running room, and detecting the flowing heat source, including detecting the number of heating devices in each area of ​​the running room, and detecting the number of people in each area of ​​the running room;

[0011] a comparison unit, which is connected to the planning unit and the sensing unit respectively, and is used to compare the air flow condition of the initial room with the air flow condition of the operating room, and determine whether the total heating or cooling amount of the heat source or the cold source meets the standard according to the comparison result, and update the three-dimensional model as a new guidance model;

[0012] A control unit, which is connected to the sensing unit and the comparison unit respectively, is used to divide the types of different areas in the operating room according to the air flow conditions and the temperature requirements of different areas in the operating room, and switch the different operating conditions of the convection terminal device and the radiation terminal device according to the number of people in each area of ​​the operating room and the number of heating devices in each area of ​​the operating room, including:

[0013] When it is determined that the total heating amount or the total cooling amount of the heat source or the cold source does not meet the standard, the electric heating auxiliary device or the cooling auxiliary device of the water source heat pump is turned on;

[0014] Switching different operating conditions of the convection terminal device and the radiation terminal device at different time periods;

[0015] The various operating devices are operated in series under the different operating conditions;

[0016] Wherein, the physical characteristics include room size, door and window locations, and external heat source distribution;

[0017] Air flow conditions include air flow velocity, air flow direction and temperature distribution;

[0018] The flow heat source is composed of the number of the heat generating devices and the number of people. The heat generating devices are devices that release heat to the surrounding environment during their own operation.

[0019] Furthermore, it also includes:

[0020] The convection terminal device includes a fan coil unit, which is connected to the control unit and is used for convection heat exchange with the air in the operating room;

[0021] The radiation terminal device includes a radiator and a wall radiation panel, which are respectively connected to the control unit and the convection terminal device to perform radiation heat exchange with the air in the operating room.

[0022] Further, the planning unit determines the initial air flow condition in the initial room according to the three-dimensional model of the initial room and according to the physical properties of the initial room, wherein:

[0023] setting the physical properties of the initial room into the three-dimensional model,

[0024] The three-dimensional model is meshed according to the air flow velocity,

[0025] The air flow conditions in each grid are calculated and an air streamline diagram is drawn.

[0026] Furthermore, the installation unit places the convection terminal device and the radiation terminal device in response to the guidance model, wherein:

[0027] The wall radiation panel is placed on the wall on the side where the external heat source is not distributed;

[0028] The radiator is placed at the door and window position;

[0029] placing the fan coil unit according to the room size;

[0030] The external heat source is a heat source outside the initial room that can generate heat and affect the internal thermal environment of the initial room.

[0031] Furthermore, the control unit divides the types of different areas in the operating room according to the air flow conditions and the temperature requirements of different areas in the operating room, wherein:

[0032] If the average air flow rate in the area is greater than or equal to the preset flow rate value and the temperature requirement range difference in the area is less than the preset temperature difference, the control unit divides the area into a temperature sensitive area;

[0033] If the average air flow rate in the area is greater than or equal to the preset flow rate value and the temperature requirement range difference in the area is greater than or equal to the preset temperature difference value, the control unit divides the area into a temperature tolerance zone;

[0034] If the average air flow rate in the area is less than the preset flow rate value and the temperature requirement range difference in the area is less than the preset temperature difference, the control unit divides the area into a special temperature requirement area;

[0035] If the average air flow rate in the area is less than the preset flow rate value and the temperature requirement range difference in the area is greater than or equal to the preset temperature difference value, the control unit divides the area into a constant temperature area;

[0036] The preset flow rate value is related to the physical characteristics of the room, and the preset temperature difference value is related to the purpose of different areas of the room.

[0037] Furthermore, the control unit calculates energy supply parameters for each area in the operating room according to the number of people in each area in the operating room and the number of heating devices in each area in the operating room.

[0038] Furthermore, the control unit, when dividing a single area in the operating room as the temperature sensitive area, compares the energy supply parameters of the area with preset energy supply parameters, and switches different operating conditions of the convection terminal device and the radiation terminal device in the area according to the comparison result, wherein:

[0039] If the energy supply parameter is less than the preset energy supply parameter, the radiator is operated in a separate operation mode;

[0040] If the energy supply parameter is greater than or equal to the preset energy supply parameter, the full equipment operation condition is operated;

[0041] The preset energy supply parameters are positively correlated with the area of ​​the operating room. The operating conditions include the fan coil unit's separate operating condition, the radiator's separate operating condition, the wall radiation panel's separate operating condition, the radiator and fan coil unit's coupled operating condition, the fan coil unit and wall radiation panel's coupled operating condition, the radiator and wall radiation panel's coupled operating condition and the full equipment operating condition. The full equipment operating condition is the radiator, fan coil unit and wall radiation panel's coupled operating condition.

[0042] Furthermore, the control unit compares the energy supply parameters of a single area in the operating room with the preset energy supply parameters when dividing the single area in the operating room as the temperature tolerance zone, and switches the different operating conditions of the convection terminal device and the radiation terminal device in the area according to the comparison result, wherein:

[0043] If the energy supply parameter is less than the preset energy supply parameter, the wall radiation panel is operated in a separate operation mode;

[0044] If the energy supply parameter is greater than or equal to the preset energy supply parameter, the radiator and fan coil coupling operation condition is operated.

[0045] Furthermore, the control unit compares the energy supply parameters of a single area in the operating room with the preset energy supply parameters when dividing the single area in the operating room as the special temperature demand area, and switches the different operating conditions of the convection terminal device and the radiation terminal device in the area according to the comparison result, wherein:

[0046] If the energy supply parameter is less than the preset energy supply parameter, the fan coil unit is operated in a separate operation mode;

[0047] If the energy supply parameter is greater than or equal to the preset energy supply parameter, the fan coil unit and the wall radiation panel are operated in a coupled operation condition.

[0048] Furthermore, the control unit operates the radiator and the wall radiation panel in a coupled operating condition when a single area in the operating room is divided into the constant temperature zone.

[0049] Compared with the prior art, the beneficial effect of the present invention lies in that the system of the present invention simulates the air flow in the room by setting a three-dimensional model in combination with the physical characteristics of the room. By simulating the interaction between air flow and temperature field, the temperature distribution in different areas of the room can be predicted, and then the ventilation and air-conditioning systems can be adjusted to avoid local overheating or overcooling areas, create a more comfortable thermal environment for people, and improve the thermal comfort of indoor personnel. Then, the equipment is placed according to the air flow conditions. When the air-conditioning equipment is placed according to the air flow direction and characteristics in the room, the hot and cold air blown by the air-conditioning equipment can be more evenly diffused in the room with the help of natural airflow. By accurately grasping the air flow laws to place the air-conditioning equipment, it can be avoided that the air-conditioning equipment cannot effectively diffuse and cause long-term high-power operation. After reasonable placement, the hot and cold air is evenly distributed, and only relatively less energy is consumed to maintain a stable and comfortable indoor temperature, which plays a role in energy saving and emission reduction, and effectively improves the accuracy and practicality of the energy ladder convection-radiation coupling terminal system based on intermittent heating and cooling.

[0050] Furthermore, the system of the present invention forms a convection-radiation coupled terminal system by connecting radiators, fan coil units and wall radiation panels in series, which can have both the effects of rapid heating or cooling of the convection terminal and the effects of good comfort and large thermal inertia of the radiation terminal, and can switch the heating or cooling conditions at will to meet the requirements of intermittent heating or cooling in various scenarios. In addition, the system utilizes the energy cascade utilization theory to improve energy utilization and is applicable to more types of energy. The energy cascade utilization fully reflects the cherishment and efficient use of limited energy resources, and reduces energy waste by extending the use chain of each energy as much as possible, thereby further improving the accuracy and practicality of the energy cascade convection-radiation coupled terminal system based on intermittent heating and cooling.

[0051] Furthermore, the present invention divides the types of different areas in the operating room according to the air flow conditions and the temperature requirements of different areas in the operating room. Through such division, the specific temperature requirement characteristics of each area can be clearly known, and then targeted temperature adjustment measures can be taken. For example, in a large office space, the area close to the window is affected by sunlight, and the temperature requirement may be relatively low, while the middle part of the room is more crowded and the temperature requirement is moderate. After these areas are classified separately, the air volume, wind speed and temperature setting of the air-conditioning outlets in different areas can be adjusted to accurately meet the desired temperature conditions of each area, avoid overcooling or overheating in some areas, and improve the thermal comfort of indoor people as a whole. At the same time, the areas are divided and regulated according to the actual temperature requirements, avoiding excessive cooling or heating of the entire room to meet the special temperature requirements of individual areas, reducing unnecessary energy consumption, and further improving the accuracy and practicality of the energy ladder convection radiation coupling terminal system based on intermittent heating and cooling.

[0052] Furthermore, the present invention adjusts the equipment operating conditions in different areas according to the personnel conditions in each area of ​​the room and the conditions of the heating equipment. The number of personnel in different areas is different, and the heat dissipation conditions of human bodies are also different. At the same time, the presence of heating equipment will additionally increase the heat dissipation. By adjusting the air-conditioning operating conditions in a targeted manner, such as appropriately increasing the cooling capacity in crowded areas, it is ensured that the ambient temperature of the personnel is suitable to avoid the stuffy feeling caused by too many people; and for areas with heating equipment, the cooling power of the air-conditioning is reasonably adjusted according to the heat generated by the equipment, so that the temperature of the area is maintained within an appropriate range, so that the staff in it feel comfortable, and the whole room is effectively improved. The thermal comfort of people in different areas of the room can be adjusted according to actual conditions, so that the temperature of each area can be balanced, and there will be no excessive difference in local cold and heat, creating a more comfortable and pleasant indoor environment. The air conditioner is controlled according to the actual heat generation in each area, which can avoid over-cooling or heating of the entire room. For areas with a small amount of heating equipment and sparse personnel, there is no need for high-intensity cooling like areas with dense personnel and no heating equipment, thereby accurately controlling the energy consumption of air conditioning, reducing unnecessary energy consumption, and further improving the accuracy and practicality of the energy ladder convection-radiation coupling terminal system based on intermittent heating and cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic structural diagram of the energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling of the present invention;

[0054] Figure 2 It is a schematic diagram of the operating conditions of the whole equipment of the embodiment of the present invention;

[0055] Figure 3A schematic diagram of a coupled operating condition of a radiator and a fan coil unit according to an embodiment of the present invention;

[0056] Figure 4 A schematic diagram of the coupled operation of a fan coil unit and a wall radiation panel according to an embodiment of the present invention;

[0057] Figure 5 It is a schematic diagram of the coupled operating condition of the radiator and the wall radiation panel according to an embodiment of the present invention;

[0058] Figure 6 It is a schematic diagram of a single operating condition of a radiator according to an embodiment of the present invention;

[0059] Figure 7 A schematic diagram of a fan coil unit operating alone according to an embodiment of the present invention;

[0060] Figure 8 A schematic diagram of a separate operating condition of a wall radiation panel according to an embodiment of the present invention;

[0061] Among them, 1, water tank; 2, water source heat pump; 3, fan coil; 4, radiator; 5, wall radiation panel; 6, first valve; 7, second valve; 8, third valve; 9, fourth valve; 10, fifth valve; 11, sixth valve; 12, seventh valve; 13, eighth valve; 14, ninth valve; 15, tenth valve; 16, water pump; 17, room. DETAILED DESCRIPTION

[0062] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0063] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0064] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0065] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "placed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] See also Figure 1 As shown, it is a schematic diagram of the structure of the energy cascade convection radiation coupling terminal system based on intermittent heating and cooling of the present invention, an energy cascade convection radiation coupling terminal system based on intermittent heating and cooling, comprising:

[0067] A planning unit, which is used to determine the initial air flow in the initial room according to the three-dimensional model of the initial room and the physical characteristics of the initial room, and form a corresponding guidance model;

[0068] An installation unit is connected to the planning unit and is used to place the convection terminal equipment and the radiation terminal equipment in response to the guidance model and form a corresponding operation room;

[0069] A sensing unit connected to the installation unit is used to detect the running air flow according to the running room and detect the flowing heat source, including detecting the number of heating devices in each area of ​​the running room and detecting the number of people in each area of ​​the running room;

[0070] A comparison unit, which is connected to the planning unit and the sensor unit respectively, and is used to compare the air flow conditions of the initial room with the air flow conditions of the operating room, and determine whether the total heating or cooling supply of the heat source or the cold source meets the standard according to the comparison result, and update the three-dimensional model as a new guidance model;

[0071] The control unit is connected to the sensing unit and the comparison unit respectively, and is used to divide the types of different areas in the operating room according to the air flow conditions and the temperature requirements of different areas in the operating room, and to switch the different operating conditions of the convection terminal device and the radiation terminal device according to the number of people in each area of ​​the operating room and the number of heating devices in each area of ​​the operating room, including:

[0072] When it is determined that the total heating or cooling supply of the heat source or cold source does not meet the standard, the electric heating auxiliary device or cooling auxiliary device of the water source heat pump is turned on;

[0073] Switch between different operating conditions of convection terminal equipment and radiation terminal equipment at different time periods;

[0074] Connect various operating equipment to work in series under different operating conditions;

[0075] Among them, physical characteristics include room dimensions, door and window locations, and external heat source distribution;

[0076] Air flow conditions include air flow velocity, air flow direction and temperature distribution;

[0077] The flow heat source is composed of the number of heat-generating devices and the number of people. The heat-generating devices are devices that release heat to the surrounding environment during their own operation.

[0078] Specifically, the system of the present invention simulates the air flow in the room by setting up a three-dimensional model in combination with the physical characteristics of the room. By simulating the interaction between air flow and temperature field, it can predict the temperature distribution in different areas of the room, and then adjust the ventilation and air-conditioning system to avoid local overheating or overcooling areas, create a more comfortable thermal environment for people, and improve the thermal comfort of indoor personnel. Then, the equipment is placed according to the air flow conditions. When the air-conditioning equipment is placed according to the air flow direction and characteristics in the room, the hot and cold air blown by the air-conditioning equipment can be more evenly diffused in the room with the help of natural airflow. By accurately grasping the air flow laws to place the air-conditioning equipment, it can be avoided that the air-conditioning equipment cannot effectively diffuse and cause long-term high-power operation. After reasonable placement, the hot and cold air is evenly distributed, and only relatively less energy is consumed to maintain a stable and comfortable indoor temperature, which plays a role in energy saving and emission reduction, and effectively improves the accuracy and practicality of the energy ladder convection-radiation coupling terminal system based on intermittent heating and cooling.

[0079] Specifically, it also includes:

[0080] Convection terminal equipment, which includes a fan coil unit, which is connected to the control unit and is used for convection heat exchange with the air in the operating room;

[0081] The radiation terminal device includes a radiator and a wall radiation panel, which are respectively connected to the control unit and the convection terminal device to perform radiation heat exchange with the air in the operating room.

[0082] In implementation, see Figure 2As shown, it is a schematic diagram of the operating conditions of the whole equipment of an embodiment of the present invention. The energy cascade convection radiation coupling terminal system includes a water tank 1, a water source heat pump 2, a fan coil 3, a radiator 4, a wall radiation panel 5, a first valve 6, a second valve 7, a third valve 8, a fourth valve 9, a fifth valve 10, a sixth valve 11, a seventh valve 12, an eighth valve 13, a ninth valve 14, a tenth valve 15 and a water pump 16; wherein the water tank 1 is connected to the water pump 16, the first valve 6 and the second valve 7 through pipelines; the water source heat pump 2 is connected to the fan coil 3, the second valve 7, the third valve 8, the fourth valve 9 and the fifth valve 10 through pipelines; the fan coil 3 is connected to the water source heat pump 2 through pipelines; the radiator 4 is connected to the first valve 6 and the seventh valve 12 through pipelines; the wall radiation panel 5 is connected to the ninth valve 14 and the fifth valve 10 through pipelines; the first valve 6 is connected to the water tank 1, the radiator 4 and the second valve 7 through pipelines; the second valve 7 is connected to the water tank 1, the first valve 6. The third valve 8 is connected to the water source heat pump 2 through a pipeline; the third valve 8 is connected to the second valve 7, the water source heat pump 2 and the sixth valve 11 through a pipeline; the fourth valve 9 is connected to the ninth valve 14, the tenth valve 15, the water source heat pump 2 and the fifth valve 10 through a pipeline; the fifth valve 10 is connected to the fourth valve 9, the water source heat pump 2, the seventh valve 12 and the wall radiation panel 5 through a pipeline; the sixth valve 11 is connected to the third valve 8 and the eighth valve 13 through a pipeline; the seventh valve 12 is connected to the radiator 4, the wall radiation panel 5 and the fifth valve 10 through a pipeline; the eighth valve 13 is connected to the radiator 4, the sixth valve 11, the seventh valve 12 and the ninth valve 14 through a pipeline; the ninth valve 14 is connected to the eighth valve 13, the tenth valve 15 and the wall radiation panel 5 through a pipeline; the tenth valve 15 is connected to the fourth valve 9, the ninth valve 14 and the water pump 16 through a pipeline; the fan coil 3, the radiator 4 and the wall radiation panel 5 are arranged in the room 17.

[0083] The water tank 1, the water source heat pump 2, the radiator 4 and the wall radiation panel 5 are connected in series, and the end of the series connection can be changed by changing the valve switch.

[0084] It can be understood that in the heating mode, the water in the water tank is hot water, and the wind blown out by the fan coil is hot air; in the cooling mode, the water in the water tank is low-temperature water, and the wind blown out by the fan coil is cold air.

[0085] Specifically, the system of the present invention forms a convection-radiation coupled terminal system by connecting radiators, fan coil units and wall radiation panels in series. It can have both the effects of rapid heating or cooling of the convection terminal and the effects of good comfort and large thermal inertia of the radiation terminal, and can switch the heating or cooling conditions at will to meet the requirements of intermittent heating or cooling in various scenarios. In addition, the system utilizes the energy cascade utilization theory to improve energy utilization and is applicable to more types of energy. The energy cascade utilization fully reflects the cherishment and efficient use of limited energy resources, and reduces energy waste by extending the use chain of each energy as much as possible, thereby further improving the accuracy and practicality of the energy cascade convection-radiation coupled terminal system based on intermittent heating and cooling.

[0086] Specifically, the planning unit determines the initial air flow in the initial room according to the three-dimensional model of the initial room and the physical characteristics of the initial room, wherein:

[0087] Set the physical properties of the initial room into the 3D model,

[0088] Divide the 3D model into grids according to the air flow velocity.

[0089] The air flow conditions in each grid are calculated and the air streamline diagram is drawn.

[0090] It is understandable that in order to set the physical characteristics of the initial room into the three-dimensional model, it is necessary to use professional modeling software, optional SolidWorks and SketchUp, to create a three-dimensional geometric model of the initial room, accurately depict the shape and size of the room, including the layout of the walls, ceiling, and floor, as well as the position and size of openings such as doors, windows, and vents, clarify the conditions of the boundaries of the room, such as the thermal conductivity of the walls, whether they are insulated, and other properties. For doors and windows, it is necessary to determine their degree of opening and the boundary conditions for air inflow and outflow, set the initial parameters such as the temperature, pressure, and speed of the air in the room at the initial moment, which can generally be reasonably estimated based on the actual common indoor environmental conditions. The optional indoor temperature is initially set to 25 degrees Celsius and the pressure is standard atmospheric pressure.

[0091] It can be understood that the three-dimensional model is meshed according to the air flow speed, and the mesh type is reasonably selected according to the geometric characteristics of the room. Structured grids and unstructured grids are optional, and the density of the grid is controlled. The grid is appropriately encrypted in areas where the air flow changes dramatically, and the grid can be appropriately sparse in areas where the air flow is relatively stable.

[0092] It can be understood that the air flow conditions in each grid are calculated and the air streamline diagram is drawn. The previously determined physical characteristic parameters such as boundary conditions and initial conditions are imported into the simulation software. Then, based on the selected numerical calculation method, the optional Navier-Stokes equations and energy conservation equations that describe the control equations of the air flow are discretized, and the continuous partial differential equations are converted into a set of algebraic equations. The discretized set of equations is iteratively solved. As the number of iterations increases, the calculation results will gradually converge to a stable solution that meets certain accuracy requirements. In this process, it is necessary to pay close attention to the convergence of the calculation, and to judge whether a reasonable result has been obtained by checking indicators such as residuals. If the residuals do not meet the convergence requirements, it may be necessary to adjust the calculation parameters to continue the iterative solution and draw the air streamline diagram.

[0093] Specifically, the installation unit response guides the model to place the convection terminal equipment and the radiation terminal equipment, where

[0094] The wall radiation panel is placed on the wall on the side without external heat source distribution;

[0095] The radiator is placed at the door and window position;

[0096] Place fan coil units according to room size;

[0097] It can be understood that the room size includes area factors, height factors and shape factors. Based on the above factors, fan coil units of different specifications and models should be selected for installation.

[0098] The external heat source is a heat source outside the initial room that can generate heat and affect the internal thermal environment of the initial room.

[0099] Specifically, the control unit divides the types of different areas in the operating room according to the air flow conditions and the temperature requirements of different areas in the operating room, among which,

[0100] If the average air flow rate in the area is greater than or equal to the preset flow rate value and the temperature demand range difference in the area is less than the preset temperature difference, the control unit divides the area into a temperature sensitive area;

[0101] If the average air velocity in the area is greater than or equal to the preset velocity value and the temperature requirement range difference in the area is greater than or equal to the preset temperature difference, the control unit divides the area into a temperature tolerance zone;

[0102] If the average air velocity in the area is less than the preset velocity value and the temperature demand range difference in the area is less than the preset temperature difference, the control unit divides the area into a special temperature demand area;

[0103] If the average air flow rate in the area is less than the preset flow rate value and the temperature demand range difference in the area is greater than or equal to the preset temperature difference value, the control unit divides the area into a constant temperature area;

[0104] In the implementation, the preset flow rate value is 0.6 meters per second, and the preset temperature difference value is 5 degrees Celsius. If the average air flow rate in the area is 1.0 meters per second, which is greater than the preset flow rate value of 0.6 meters per second, and the temperature demand range difference in the area is 2 degrees Celsius, which is less than the preset temperature difference value of 5 degrees Celsius, the control unit divides the area into a temperature sensitive area;

[0105] If the average air velocity in the area is 0.8 m / s, which is greater than the preset velocity value of 0.6 m / s, and the temperature demand range difference in the area is 8 degrees Celsius, which is greater than the preset temperature difference of 5 degrees Celsius, the control unit will classify the area as a temperature tolerance zone;

[0106] If the average air velocity in the area is 0.4 m / s, which is less than the preset velocity value of 0.6 m / s, and the temperature demand range difference in the area is 2 degrees Celsius, which is less than the preset temperature difference of 5 degrees Celsius, the control unit will classify the area as a special temperature demand area;

[0107] If the average air flow rate in the area is 0.3 meters per second, which is less than the preset flow rate value of 0.6 meters per second and the temperature demand range difference in the area is 10 degrees Celsius, which is greater than the preset temperature difference, the control unit divides the area into a constant temperature zone.

[0108] The preset flow rate values ​​are related to the physical characteristics of the room, and the preset temperature difference values ​​are related to the purpose of different areas of the room.

[0109] It is understandable that the physical characteristics of a room include room size, door and window locations, and external heat source distribution. Room size includes area factors, height factors, and shape factors. For rooms with larger areas, in order to ensure that the air can circulate well throughout the space and achieve the goals of evenly adjusting the temperature, delivering fresh air, and exhausting dirty air, a relatively high flow rate is often required. For example, in a large conference room with an area of ​​100 square meters, if the air in various parts of the room is to complete an effective circulation in a short period of time, a higher air flow rate needs to be set, which may need to reach about 0.2-0.5 meters per second; for a small storage room with an area of ​​10 square meters, due to the small space, 0.1-0.2 meters per second can meet the basic requirements. The ventilation requirements of this building are as follows: in higher rooms, such as factories and auditoriums with a floor height of 3.5 meters or more, it is relatively difficult to mix the air in the vertical direction, and hot air tends to accumulate at the top. A higher flow rate is required to promote the full mixing of air at different height levels to evenly distribute the hot and cold air. For example, in an industrial factory with a floor height of 4 meters, in order for the ventilation system to operate effectively and for fresh air to be delivered from the bottom to the top and circulate well, the preset air flow rate may have to reach 0.3-0.6 meters per second. The floor height of ordinary residential buildings is mostly between 2.8 and 3 meters, and natural air convection is relatively easy. The preset flow rate required to maintain a comfortable environment is relatively low, and 0.1-0.3 meters per second can meet the basic needs of indoor air conditioning. ; In a long and narrow room, the distance for air to flow from one end to the other is long, and dead corners for air flow are prone to occur. In order to allow the air to fully cover every corner, it is often necessary to increase the flow rate appropriately to enhance the air delivery capacity. For example, a long and narrow corridor with a length of 10 meters and a width of 3 meters, compared with a square room with a side length of 5 meters, under the same ventilation requirements, the long and narrow corridor needs to increase the flow rate by 10%-20% to ensure that the air can smoothly pass through the entire space and avoid local poor ventilation. In a room with a more regular shape, close to a square or a circle, the air flow is relatively smooth, and the required preset flow rate can be relatively low; when the doors and windows of the room are in relatively symmetrical positions, the indoor air circulates more smoothly. If the doors and windows are in a relatively symmetrical position, the indoor air circulates more smoothly. Asymmetric, it is easy to have a situation where the flow rate is fast in some areas and slow in some areas; if the direction of the building where the room is located allows it to be exposed to direct sunlight for a long time, such as a south-facing room in the summer of the northern hemisphere, the solar radiation heat is large, the outer wall will absorb a lot of heat and conduct it to the room, causing the indoor temperature to rise. In order to maintain a comfortable indoor temperature environment, it is necessary to quickly remove the heat through air flow. At this time, a higher preset flow rate value is often required. For example, in a south-facing office, in the afternoon with strong sunlight, the temperature of the outer wall can be much higher than the indoor temperature. If you want to ensure that the indoor temperature is maintained at a comfortable 24-26 degrees Celsius, the preset flow rate of the ventilation system may need to be increased from the conventional 0.2-0.3 meters per second to 0.3-0.If the room is in the shadow of other buildings, it will receive relatively less solar radiation and the indoor temperature will be less affected by the external heat. Accordingly, the preset flow rate can be appropriately reduced. For example, in the city, some rooms located on the north side of high-rise buildings that are blocked have relatively stable indoor temperatures and the flow rate is set at about 0.1-0.2 meters per second.

[0110] It is understandable that different areas of the room have different requirements for temperature differences. The bedroom is mainly used for rest and sleep, and people hope to get a comfortable, quiet and relaxing environment here. Usually, the temperature of the bedroom should be kept relatively stable and moderate, and the preset temperature difference is generally around 1-3 degrees Celsius. Meeting rooms and other places have a large turnover of people and have more equipment, and the preset temperature difference is generally around 3-5 degrees Celsius.

[0111] Specifically, the present invention divides the types of different areas in the operating room according to the air flow conditions and the temperature requirements of different areas in the operating room. Through such division, the specific temperature requirement characteristics of each area can be clearly known, and then targeted temperature adjustment measures can be taken. For example, in a large office space, the area close to the window is affected by sunlight, and the temperature requirement may be relatively low, while the middle part of the room is more crowded and the temperature requirement is moderate. After these areas are classified separately, the air volume, wind speed and temperature setting of the air-conditioning outlets in different areas can be adjusted to accurately meet the desired temperature conditions of each area, avoid overcooling or overheating in some areas, and improve the thermal comfort of indoor people as a whole. At the same time, the areas are divided and regulated according to the actual temperature requirements, avoiding excessive cooling or heating of the entire room to meet the special temperature requirements of individual areas, reducing unnecessary energy consumption, and further improving the accuracy and practicality of the energy ladder convection radiation coupling terminal system based on intermittent heating and cooling.

[0112] Specifically, the control unit calculates the energy supply parameters of each area in the operating room according to the number of people in each area in the operating room and the number of heating devices in each area in the operating room.

[0113] It can be understood that the energy supply parameter = A×the number of people in each area of ​​the operating room+B×the number of heating devices in each area of ​​the operating room, where A is the parameter of the number of people in the room, which is 0.2; B is the parameter of the heating device in the room, which is 0.8; for example, if the number of people in each area of ​​the operating room is 5 and the number of heating devices in each area of ​​the operating room is 2, then the energy supply parameter = 0.2×5+0.8×2=2.6.

[0114] Specifically, the control unit divides a single area in the operating room into a temperature sensitive area, compares the energy supply parameters of the area with the preset energy supply parameters, and switches the different operating conditions of the convection terminal device and the radiation terminal device in the area according to the comparison result, wherein:

[0115] If the energy supply parameter is less than the preset energy supply parameter, the radiator will be operated alone;

[0116] If the energy supply parameter is greater than or equal to the preset energy supply parameter, the full equipment operation condition is run;

[0117] In the implementation, the preset energy supply parameter is 2. If the energy supply parameter is 1.6, which is less than the preset energy supply parameter 2, the radiator is operated in a separate operation condition;

[0118] If the energy supply parameter is 2.4, which is greater than the preset energy supply parameter 2, the full equipment operating conditions will be run.

[0119] See also Figure 6 As shown, it is a schematic diagram of the independent operation condition of the radiator according to an embodiment of the present invention. In implementation, the first valve 6, the eighth valve 13 and the tenth valve 15 are opened, and the other valves are kept closed. The hot water or low-temperature water operation route is shown by the arrow in the figure. The hot water or low-temperature water flows from the water tank 1 into the radiator 4 and then returns to the water tank 1 through the water pump 16 to complete the circulation.

[0120] Please continue reading Figure 2 As shown, it is a schematic diagram of the operating conditions of the entire device of an embodiment of the present invention. During implementation, the first valve 6, the sixth valve 11, the third valve 8, the fifth valve 10, the ninth valve 14 and the tenth valve 15 are opened, and the remaining valves are kept closed. The hot water or low-temperature water running route is shown by the arrows in the figure. The hot water or low-temperature water flows from the water tank 1 into the radiator 4, and then flows into the water source heat pump 2. The hot water or low-temperature water in the water source heat pump 2 exchanges heat with the air in the fan coil 3, and then flows into the wall radiation panel 5, and finally returns to the water tank 1 through the water pump 16 to complete the cycle.

[0121] The preset energy supply parameters are positively correlated with the area of ​​the operating room. The operating conditions include the fan coil unit's separate operating condition, the radiator's separate operating condition, the wall radiation panel's separate operating condition, the radiator and fan coil unit's coupled operating condition, the fan coil unit's and wall radiation panel's coupled operating condition, the radiator and wall radiation panel's coupled operating condition and the full equipment operating condition. The full equipment operating condition is the radiator, fan coil unit and wall radiation panel's coupled operating condition.

[0122] It is understandable that the larger the area of ​​the operating room, the more people and heating equipment it can accommodate, the larger the preset energy supply parameters.

[0123] Optionally, the operating room area is 10 square meters and the preset energy supply parameter is 1.2;

[0124] The operating room area is 20 square meters, and the preset energy supply parameter is 1.6;

[0125] The operating room area is 30 square meters and the preset energy supply parameter is 3.8.

[0126] Specifically, the control unit divides a single area in the operating room into a temperature tolerance zone, compares the energy supply parameters of the area with the preset energy supply parameters, and switches the different operating conditions of the convection terminal device and the radiation terminal device in the area according to the comparison result, wherein:

[0127] If the energy supply parameter is less than the preset energy supply parameter, the wall radiation panel will be operated alone;

[0128] If the energy supply parameter is greater than or equal to the preset energy supply parameter, the radiator and fan coil coupling operation condition is operated.

[0129] In implementation, the preset energy supply parameter is 2. If the energy supply parameter is 1.5, which is less than the preset energy supply parameter 5, the wall radiation panel is operated alone;

[0130] If the energy supply parameter is 2.4 which is greater than the preset energy supply parameter 2, the radiator and fan coil unit will be operated in a coupled operation mode.

[0131] See also Figure 8 As shown, it is a schematic diagram of the operating condition of the wall radiation panel alone in an embodiment of the present invention. In implementation, the second valve 7, the fifth valve 10, the ninth valve 14 and the tenth valve 15 are opened, and the other valves are kept closed. The hot water or low-temperature water running route is shown by the arrows in the figure. The hot water or low-temperature water flows from the water tank 1 into the water source heat pump 2, then flows into the wall radiation panel 5, and finally returns to the heating water tank 1 through the water pump 16 to complete the cycle. At this time, the water source heat pump 2 and the fan coil 3 are not running.

[0132] See also Figure 3 As shown, it is a schematic diagram of the coupled operating conditions of the radiator and the fan coil unit in an embodiment of the present invention. During implementation, the first valve 6, the sixth valve 11, the third valve 8, the fourth valve 9 and the tenth valve 15 are opened, and the remaining valves are kept closed. The hot water or low-temperature water running route is shown by the arrows in the figure. The hot water or low-temperature water flows from the water tank 1 into the radiator 4, and then flows into the water source heat pump 2. The hot water or low-temperature water in the water source heat pump 2 exchanges heat with the air in the fan coil unit 3, and then returns to the water tank 1 through the water pump 16 to complete the cycle.

[0133] Specifically, the control unit divides a single area in the operating room into a special temperature demand area, compares the energy supply parameters of the area with the preset energy supply parameters, and switches the different operating conditions of the convection terminal device and the radiation terminal device in the area according to the comparison result, wherein:

[0134] If the energy supply parameter is less than the preset energy supply parameter, the fan coil unit will be operated in a separate operation mode;

[0135] If the energy supply parameter is greater than or equal to the preset energy supply parameter, the fan coil unit and the wall radiation panel will be operated in a coupled operation condition.

[0136] In the implementation, the preset energy supply parameter is 2. If the energy supply parameter is 1.6, which is less than the preset energy supply parameter 2, the fan coil unit is operated in a separate operation condition;

[0137] If the energy supply parameter is 2, which is equal to the preset energy supply parameter 2, the fan coil unit and the wall radiation panel will be operated in a coupled operation mode.

[0138] See also Figure 7 As shown, it is a schematic diagram of the separate operating condition of the fan coil unit in an embodiment of the present invention. During implementation, the second valve 7, the fourth valve 9 and the tenth valve 15 are opened, and the remaining valves are kept closed. The hot water or low-temperature water running route is shown by the arrows in the figure. The hot water or low-temperature water flows from the water tank 1 into the water source heat pump 2. The hot water or low-temperature water in the water source heat pump 2 exchanges heat with the air in the fan coil unit 3 and then returns to the water tank 1 through the water pump 16 to complete the cycle.

[0139] See also Figure 4 As shown, it is a schematic diagram of the coupled operating conditions of the fan coil unit and the wall radiation panel in an embodiment of the present invention. In implementation, the second valve 7, the fifth valve 10, the ninth valve 14 and the tenth valve 15 are opened, and the other valves are kept closed. The hot water or low-temperature water running route is shown by the arrows in the figure. The hot water or low-temperature water flows from the water tank 1 into the water source heat pump 2. The hot water or low-temperature water in the water source heat pump 2 exchanges heat with the wind in the fan coil unit 3 and then flows into the wall radiation panel 5, and finally returns to the water tank 1 through the water pump 16 to complete the cycle.

[0140] Specifically, when the control unit divides a single area in the operating room into a constant temperature zone, the radiator and the wall radiation panel are operated in a coupled operating condition.

[0141] See also Figure 5 As shown in the figure, it is a schematic diagram of the coupled operating conditions of the radiator and the wall radiation panel according to an embodiment of the present invention. In implementation, the first valve 6, the eighth valve 13, the ninth valve 14 and the tenth valve 15 are opened, and the other valves are kept closed. The running route of hot water or low-temperature water is shown by the arrows in the figure. The hot water or low-temperature water flows from the water tank 1 into the radiator 4 and then into the wall radiation panel 5, and finally returns to the water tank 1 through the water pump 16 to complete the cycle.

[0142] Specifically, the present invention adjusts the equipment operating conditions in different areas according to the personnel conditions in each area of ​​the room and the conditions of the heating equipment. The number of personnel in different areas is different, and the heat dissipation conditions of human bodies are also different. At the same time, the presence of heating equipment will additionally increase the heat dissipation. By adjusting the air-conditioning operating conditions in a targeted manner, such as appropriately increasing the cooling capacity in crowded areas, ensuring that the ambient temperature of the personnel is suitable, and avoiding the stuffy feeling caused by too many people; and for areas with heating equipment, the cooling power of the air-conditioning is reasonably adjusted according to the heat generated by the equipment, so that the temperature of the area is maintained within an appropriate range, so that the staff in it feel comfortable, effectively improving the temperature of the entire room. The thermal comfort of people in different areas of the room can be adjusted according to actual conditions, so that the temperature of each area can be balanced, and there will be no excessive difference in local cold and heat, creating a more comfortable and pleasant indoor environment. The air conditioner is controlled according to the actual heat generation in each area, which can avoid over-cooling or heating of the entire room. For areas with a small amount of heating equipment and sparse personnel, there is no need for high-intensity cooling like areas with dense personnel and no heating equipment, thereby accurately controlling the energy consumption of air conditioning, reducing unnecessary energy consumption, and further improving the accuracy and practicality of the energy ladder convection-radiation coupling terminal system based on intermittent heating and cooling.

[0143] During implementation, when the energy cascade convection-radiation coupling terminal system is intermittently heating or cooling, it can first open the first valve 6, the sixth valve 11, the third valve 8, the fifth valve 10, the ninth valve 14, and the tenth valve 15 according to the different heating or cooling needs of the scene, and operate the convection-radiation coupling terminal working condition formed by the coupling of the radiator, the fan coil unit, and the wall radiation panel to quickly heat up or cool down the room. When the indoor temperature reaches the heating or cooling demand, the sixth valve 11, the third valve 8, and the fifth valve 10 are closed, and the seventh valve 12 is opened to operate the coupled terminal heating or cooling condition formed by the coupling of the radiator and the wall radiation panel to ensure good thermal comfort in the room; thereafter, the sixth valve 11, the third valve 8, and the fifth valve 10 can be opened, the seventh valve 12 can be closed, and the fan coil unit can be operated to quickly adjust the indoor temperature so that the indoor temperature is within a temperature range suitable for the occupants.

[0144] In implementation, an energy ladder method is adopted. In the heating state, the convection-radiation coupling end of the radiator, fan coil and wall radiation panel combination can radiate 2000W of heat per hour, and its overall operation consumes 426W of electricity, and the energy efficiency ratio is 2000W / 426W=4.69. Compared with the fan coil unit running alone, it can radiate 1000W of heat per hour, and its overall operation consumes 278W of electricity, and the energy efficiency ratio is 1000W / 278W=3.59, which is an increase of 30.6%.

[0145] In implementation, for intermittent heating, when rapid temperature increase is required, the convection-radiation coupling terminal operating condition of the combination of radiators, fan coils and wall radiation panels can be used to quickly heat the room to a comfortable temperature of 20 degrees Celsius in the shortest time, and then switch operating conditions for different scenes; for scenes that require quietness and high comfort, such as office buildings, turn off the fan coils and run the convection-radiation coupling terminal operating condition of the combination of radiators and wall radiation panels; for rural buildings with lower required temperatures and a minimum temperature of 16 degrees Celsius, it is only necessary to turn on the radiator or wall radiation panel to operate alone. It is not necessary to provide too much heat, just to maintain the required temperature. In addition, the above two scenes can also quickly adjust the indoor temperature by turning on the fan coil to achieve a suitable temperature for the residents.

[0146] In practice, for office buildings, the office hours are from 9 am to 5 pm, and heating or cooling is required. In winter, the duty temperature needs to be maintained at 5 degrees Celsius during non-heating hours. In the early stage of heating, rapid temperature rise is required, so the convection-radiation coupling terminal working condition composed of radiators, fan coils and wall radiation panels needs to be turned on to raise the room to the required temperature within ten minutes. After that, due to the noise of the fan coil and the strong wind speed, the indoor comfort is not high, which affects the work of the staff. Therefore, the fan coil is turned off and the convection-radiation coupling terminal working condition composed of radiators and wall radiation panels is operated to maintain the room within the thermal comfort range, so that the office staff are in a comfortable environment.

[0147] In implementation, for rural buildings, heating stops at 8 o'clock in the morning and needs to be heated up quickly at 11 o'clock in the afternoon. It is necessary to turn on the convection-radiation coupling terminal operating condition of the radiator, fan coil and wall radiation panel combination to raise the room to the required temperature within ten minutes. If rural residents are not sensitive to the noise and strong convection of the fan coil during the day, this condition can continue to operate in the stable stage and stop heating at 2 o'clock in the afternoon; at 5 o'clock in the afternoon, turn on the convection-radiation coupling terminal operating condition of the radiator, fan coil and wall radiation panel combination to raise the room to the required temperature within ten minutes, and then turn off the fan coil. Tube, run the convection radiation coupling terminal condition composed of radiator and wall radiation panel, maintain it at about 20 degrees Celsius. At 11 o'clock in the evening, because the occupants need to sleep, the required temperature of the room decreases, so the radiator or wall radiation panel can be turned off, and only the wall radiation panel or the radiator can be operated alone, and the room temperature is maintained at about 16 degrees Celsius. Then at 6 o'clock the next day, the occupants wake up, and turn on the convection radiation coupling terminal condition composed of radiator, fan coil and wall radiation panel to quickly raise the room temperature to about 20 degrees Celsius, so that the occupants are in a comfortable environment.

[0148] It can be understood that the comparison unit compares the air flow conditions of the initial room with the air flow conditions of the operating room. In the heating mode, if the air temperature of the initial room is greater than the air temperature of the operating room, it is determined that the total heating or cooling supply of the heat source or cold source does not meet the standard; in the cooling mode, if the air temperature of the initial room is lower than the air temperature of the operating room, it is determined that the total heating or cooling supply of the heat source or cold source does not meet the standard; when the comparison unit determines that the total heating or cooling supply of the heat source or cold source does not meet the standard, the comparison unit analyzes the reasons for the inconsistency between the air flow velocity, air flow direction and temperature distribution in the operating room and the air flow velocity, air flow direction and temperature distribution in the initial room, and updates the air flow velocity, air flow direction and temperature distribution in the operating room to the three-dimensional model.

[0149] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0150] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling, characterized in that: include: A planning unit, which is used to determine the initial air flow in the initial room according to the three-dimensional model of the initial room and the physical characteristics of the initial room, and form a corresponding guidance model; An installation unit, which is connected to the planning unit and is used to place convection terminal devices and radiation terminal devices in response to the guidance model and form corresponding operation rooms; A sensing unit connected to the installation unit, for detecting the running air flow according to the running room, and detecting the flowing heat source, including detecting the number of heating devices in each area of ​​the running room, and detecting the number of people in each area of ​​the running room; a comparison unit, which is connected to the planning unit and the sensing unit respectively, and is used to compare the air flow condition of the initial room with the air flow condition of the operating room, and determine whether the total heating or cooling amount of the heat source or the cold source meets the standard according to the comparison result, and update the three-dimensional model as a new guidance model; A control unit, which is connected to the sensing unit and the comparison unit respectively, is used to divide the types of different areas in the operating room according to the air flow conditions and the temperature requirements of different areas in the operating room, and switch the different operating conditions of the convection terminal device and the radiation terminal device according to the number of people in each area of ​​the operating room and the number of heating devices in each area of ​​the operating room, including: When it is determined that the total heating amount or the total cooling amount of the heat source or the cold source does not meet the standard, the electric heating auxiliary device or the cooling auxiliary device of the water source heat pump is turned on; Switching different operating conditions of the convection terminal device and the radiation terminal device at different time periods; The various operating devices are operated in series under the different operating conditions; Wherein, the physical characteristics include room size, door and window locations, and external heat source distribution; Air flow conditions include air flow velocity, air flow direction and temperature distribution; The flow heat source is composed of the number of the heat generating devices and the number of people. The heat generating devices are devices that release heat to the surrounding environment during their own operation.

2. The energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling according to claim 1 is characterized in that: Also includes: The convection terminal device includes a fan coil unit, which is connected to the control unit and is used for convection heat exchange with the air in the operating room; The radiation terminal device includes a radiator and a wall radiation panel, which are respectively connected to the control unit and the convection terminal device to perform radiation heat exchange with the air in the operating room.

3. The energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling according to claim 2 is characterized in that: The planning unit determines the initial air flow condition in the initial room according to the three-dimensional model of the initial room and according to the physical properties of the initial room, wherein: setting the physical properties of the initial room into the three-dimensional model, The three-dimensional model is meshed according to the air flow velocity, The air flow conditions in each grid are calculated and an air streamline diagram is drawn.

4. The energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling according to claim 3 is characterized in that: The installation unit places the convection terminal device and the radiation terminal device in response to the guidance model, wherein: The wall radiation panel is placed on the wall on the side where the external heat source is not distributed; The radiator is placed at the door and window position; placing the fan coil unit according to the room size; The external heat source is a heat source outside the initial room that can generate heat and affect the internal thermal environment of the initial room.

5. The energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling according to claim 4 is characterized in that: The control unit divides the types of different areas in the operating room according to the air flow conditions and the temperature requirements of different areas in the operating room, wherein: If the average air flow rate in the area is greater than or equal to the preset flow rate value and the temperature requirement range difference in the area is less than the preset temperature difference, the control unit divides the area into a temperature sensitive area; If the average air flow rate in the area is greater than or equal to the preset flow rate value and the temperature requirement range difference in the area is greater than or equal to the preset temperature difference value, the control unit divides the area into a temperature tolerance zone; If the average air flow rate in the area is less than the preset flow rate value and the temperature requirement range difference in the area is less than the preset temperature difference, the control unit divides the area into a special temperature requirement area; If the average air flow rate in the area is less than the preset flow rate value and the temperature requirement range difference in the area is greater than or equal to the preset temperature difference value, the control unit divides the area into a constant temperature area; The preset flow rate value is related to the physical characteristics of the room, and the preset temperature difference value is related to the purpose of different areas of the room.

6. The energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling according to claim 5 is characterized in that: The control unit calculates the energy supply parameters of each area in the operating room according to the number of people in each area in the operating room and the number of heating devices in each area in the operating room.

7. The energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling according to claim 6 is characterized in that: The control unit compares the energy supply parameters of a single area in the operating room with the preset energy supply parameters when dividing the single area in the operating room as the temperature sensitive area, and switches the different operating conditions of the convection terminal device and the radiation terminal device in the area according to the comparison result, wherein: If the energy supply parameter is less than the preset energy supply parameter, the radiator is operated in a separate operation mode; If the energy supply parameter is greater than or equal to the preset energy supply parameter, the full equipment operation condition is operated; The preset energy supply parameters are positively correlated with the area of ​​the operating room. The operating conditions include the fan coil unit's separate operating condition, the radiator's separate operating condition, the wall radiation panel's separate operating condition, the radiator and fan coil unit's coupled operating condition, the fan coil unit and wall radiation panel's coupled operating condition, the radiator and wall radiation panel's coupled operating condition and the full equipment operating condition. The full equipment operating condition is the radiator, fan coil unit and wall radiation panel's coupled operating condition.

8. The energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling according to claim 7 is characterized in that: The control unit compares the energy supply parameters of a single area in the operating room with the preset energy supply parameters when dividing the single area in the operating room into the temperature tolerance area, and switches the different operating conditions of the convection terminal device and the radiation terminal device in the area according to the comparison result, wherein: If the energy supply parameter is less than the preset energy supply parameter, the wall radiation panel is operated in a separate operation mode; If the energy supply parameter is greater than or equal to the preset energy supply parameter, the radiator and fan coil coupling operation condition is operated.

9. The energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling according to claim 8 is characterized in that: The control unit, when dividing a single area in the operating room as the special temperature demand area, compares the energy supply parameter of the area with the preset energy supply parameter, and switches the different operating conditions of the convection terminal device and the radiation terminal device in the area according to the comparison result, wherein: If the energy supply parameter is less than the preset energy supply parameter, the fan coil unit is operated in a separate operation mode; If the energy supply parameter is greater than or equal to the preset energy supply parameter, the fan coil unit and the wall radiation panel are operated in a coupled operation condition.

10. The energy cascade convection-radiation coupling terminal system based on intermittent heating and cooling according to claim 9 is characterized in that: The control unit operates the radiator and the wall radiation panel in a coupled operation mode when a single area in the operating room is divided into the constant temperature zone.

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