A zero-energy construction site temporary facility light storage direct flexible system

Abstract

The application discloses a zero-energy-consumption temporary facility light-storage direct-flexible system for a construction site, which comprises a solar power generation, heat collection and refrigeration unit device, a photovoltaic system sun-tracking automatic control device, an air source heat pump unit, a temporary house phase change heat storage and cold storage envelope structure, a heat storage water tank, a cold storage water tank, a fan-coil air conditioner terminal, a circulating water pump and an electric valve. The solar power generation, heat collection and refrigeration unit device comprises a photovoltaic module board, a micro heat pipe array heat transfer flat plate, a heat exchange header and a phase change material layer. The application realizes the functions of photovoltaic power generation, heat collection and refrigeration in one, and realizes the functions of electricity storage, heat storage and cold storage. Through the photovoltaic system sun-tracking automatic control device and a sun-tracking adjustment method of the solar photovoltaic board, through a rotating track, a rotating drive motor system and a telescopic rod control, the system can realize horizontal rotation and photovoltaic board angle adjustment control, track the sun movement and maximize the photovoltaic panel energy capture efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of temporary facilities at construction sites, and specifically relates to a zero-energy temporary facility photovoltaic-storage-direct current-flexible system for construction sites. Background Technology

[0002] Global energy consumption and carbon emissions continue to grow. Although the development of renewable energy continues to increase, fossil fuels still dominate the energy structure, accounting for over 80% of my country's energy consumption. Buildings are a key area of ​​energy consumption and carbon emissions. With rapid urbanization and profound industrial restructuring, carbon emissions from urban and rural construction and their share of total societal carbon emissions will further increase. In low-energy buildings, energy consumption during the construction phase can account for 40%-60% of the building's total life-cycle energy consumption. Temporary housing facilities are frequently used in construction site offices and living areas. These facilities are numerous and widespread, with strong similarities across different projects, characterized by high modularity, ease of assembly, and short construction periods. However, these temporary housing facilities are mostly lightweight structures, resulting in significant problems such as insufficient thermal insulation of the building envelope, poor comfort in office and living spaces, and high operating energy consumption. Therefore, this invention proposes a zero-energy temporary facility photovoltaic-storage-direct-flexible system for construction sites, which can be widely adapted to the characteristics of construction site use, effectively improve the comfort of office and residential use, provide integrated electricity, heat and cooling energy for temporary housing facilities, improve the comprehensive utilization rate of renewable energy, and significantly reduce the energy consumption of temporary facilities. It has practical significance and good application prospects.

[0003] Therefore, how to provide a zero-energy temporary facility photovoltaic-storage-direct-flex system for construction sites that can solve the prominent problems of insufficient thermal insulation performance of existing temporary housing facilities on construction sites, poor comfort in office and residential use, and high energy consumption has become a technical problem that the construction industry urgently needs to solve. Summary of the Invention

[0004] This invention aims to provide a zero-energy temporary facility photovoltaic-storage-direct current-flexible system for construction sites, solving problems such as insufficient thermal insulation performance of existing temporary housing facilities on construction sites, poor comfort in office and residential use, and high operating energy consumption.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A zero-energy temporary facility photovoltaic-storage-direct-flexible system for construction sites includes a solar power generation and thermal cooling unit, an air source heat pump unit, a temporary housing phase change thermal and cold storage enclosure structure, an insulated hot water storage tank, an insulated cold water storage tank, a fan coil unit air conditioning terminal, and an electric valve. The solar power generation and thermal cooling unit includes a photovoltaic module panel, a micro heat pipe array heat transfer plate, a heat exchange manifold, and an encapsulated phase change material layer. The micro heat pipe array heat transfer plate is laid on the lower surface of the photovoltaic module panel through a first thermally conductive silicone layer. One end of the micro heat pipe array heat transfer plate extends horizontally into the heat exchange manifold. The heat exchange manifold is provided with a plurality of first fins, which are vertically sleeved at equal intervals on the outer side of the micro heat pipe array heat transfer plate. The top of the encapsulated phase change material layer is on the surface of the micro heat pipe array heat transfer plate that is away from the photovoltaic module panel. The encapsulated phase change material layer is connected by a second thermally conductive silicone layer. Several second fins are provided within the encapsulated phase change material layer, with the second fins vertically connected at equal intervals to the top of the encapsulated phase change material layer. The solar power generation and heat collection cooling unit, air source heat pump unit, temporary housing phase change heat storage and cold storage enclosure structure, insulated hot water tank, insulated cold water tank, and fan coil air conditioning terminal are connected by pipelines. Electric valves for system function switching are installed in the pipelines. By controlling the corresponding electric valves, the solar power generation and heat collection cooling unit can supply water to the temporary housing phase change heat storage and cold storage enclosure structure, the insulated hot water tank, and the insulated cold water tank, respectively. The air source heat pump unit can supply water to the insulated hot water tank and the fan coil air conditioning terminal, respectively. The insulated hot water tank and the insulated cold water tank can supply water to the fan coil air conditioning terminal, respectively.

[0007] Preferably, in the aforementioned zero-energy temporary facility solar-storage-flexible system at the construction site, the pipeline is further equipped with several circulating water pumps, including a first circulating water pump, a second circulating water pump, and a third circulating water pump. The outlet of the solar power generation and thermal cooling unit is connected to the inlet of the second circulating water pump and the first inlet of the insulated hot water tank, respectively. The outlet of the second circulating water pump is connected to the first inlet of the insulated cold water tank and the inlet of the temporary building's phase change thermal and cold storage enclosure structure, respectively. The outlet of the temporary building's phase change thermal and cold storage enclosure structure is connected to the inlet of the solar power generation and thermal cooling unit. The outlet of the air source heat pump unit is connected to the third circulating water pump. The inlet is connected to the first inlet of the insulated hot water storage tank. The first outlet of the insulated hot water storage tank is connected to the inlet of the first circulating water pump. The outlet of the first circulating water pump is connected to the inlet of the solar power generation heat collection and cooling unit and the inlet of the air source heat pump unit. The outlet of the third circulating water pump is connected to the inlet of the fan coil air conditioner terminal. The outlet of the fan coil air conditioner terminal is connected to the inlet of the air source heat pump unit, the second inlet of the insulated hot water storage tank, and the second inlet of the insulated cold water storage tank. The inlet of the third circulating water pump is connected to the second outlet of the insulated hot water storage tank and the second outlet of the insulated cold water storage tank.

[0008] Preferably, in the aforementioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the solar power generation, heat collection, and cooling unit is mounted on the photovoltaic system's automatic solar tracking control device. The automatic solar tracking control device includes: a photovoltaic support turntable system, a first support plate, photovoltaic panel angle adjustment components, a second support plate, forward-extending photovoltaic units, reverse-extending photovoltaic units, and a top photovoltaic unit. The photovoltaic support turntable system is mounted on the top of the temporary facility. The first support plate is mounted on the photovoltaic support turntable system, which can drive the first support plate to rotate. The second support plate is mounted on the first support plate via four photovoltaic panel angle adjustment components, distributed at the four corners of the second support plate. The solar power generation, heat collection, and cooling unit is mounted on the second support plate, and the photovoltaic panels in the solar power generation, heat collection, and cooling unit are parallel to the second support plate. The angle between the second support plate and the horizontal plane can be adjusted via the photovoltaic panel angle adjustment components.

[0009] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the solar power generation, heat collection, and cooling unit includes a top photovoltaic unit, which is mounted on the second support plate and is parallel to the second support plate.

[0010] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the solar power generation, thermal collection, and cooling unit further includes a forward-extending photovoltaic unit and a reverse-extending photovoltaic unit. The forward-extending photovoltaic unit and the reverse-extending photovoltaic unit are respectively mounted on a second support plate via a pair of sliding modules. The forward-extending photovoltaic unit and the reverse-extending photovoltaic unit are parallel to the second support plate. The sliding module for mounting the forward-extending photovoltaic unit is fixedly disposed on the lower surface of the second support plate, and the sliding module for mounting the reverse-extending photovoltaic unit is fixedly disposed on the upper surface of the second support plate. The sliding module includes a drive motor, a guide rail, and a slider. The drive motor can drive the slider to move along the guide rail. The slider is fixedly connected to the forward-extending photovoltaic unit or the reverse-extending photovoltaic unit via a corresponding mounting bracket.

[0011] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the photovoltaic panel angle adjustment component includes a mounting base, a hydraulic cylinder base, a hydraulic cylinder sleeve, a telescopic rod, a lower terminal, a ball joint connector, and an upper terminal. The mounting base is fixedly mounted on the first support plate, the hydraulic cylinder base is mounted on the mounting base, the hydraulic cylinder sleeve is mounted on the hydraulic cylinder base, the lower end of the telescopic rod is located inside the hydraulic cylinder sleeve, the upper end of the telescopic rod is connected to the lower terminal, a ball joint connector is provided between the lower terminal and the upper terminal, and the upper terminal is fixedly mounted on the lower surface of the second support plate. The telescopic rods can extend and retract relative to their respective hydraulic cylinder sleeves. The extension and retraction of each telescopic rod can drive the corresponding upper terminal to move up and down, thereby adjusting the angle between the second support plate and the horizontal plane.

[0012] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the photovoltaic support turntable system includes a support base, a rotary track, a connecting bracket, a motor base, a rotary drive motor system, a motor turntable, a flange, and rotary rollers. The support base is located on top of the temporary facility, the rotary track and the connecting bracket are respectively fixedly mounted on the support base, the connecting bracket is located at the center of the rotary track, the motor base is located on top of the connecting bracket, the rotary drive motor system is located on the motor base, the motor turntable is located on the rotary drive motor system, the flange is fixedly connected to the motor turntable, the first support plate is located on top of the flange, and the rotary rollers are fixedly connected to the lower part of the first support plate through a connecting rod. When the rotary drive motor system drives the motor turntable to rotate, the rotary rollers can move on the rotary track.

[0013] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-DC-flexible system at the construction site, the photovoltaic module of the solar power generation and thermal cooling unit is electrically connected to the photovoltaic combiner box, the photovoltaic combiner box is electrically connected to the photovoltaic DC converter, the photovoltaic DC converter is electrically connected to the DC bus, the DC bus is connected to the municipal power grid via an AC / DC converter, the DC bus is electrically connected to the energy storage battery via an energy storage bidirectional converter, and the DC bus is electrically connected to the DC load, which includes electric vehicle charging piles, air source heat pump units, circulating water pumps, fan coil air conditioning terminals, electric valves, and indoor lighting.

[0014] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the photovoltaic module panel includes a glass cover plate, a first EVA encapsulation film, a solar cell, a second EVA encapsulation film, and a TPT board laid in sequence. The TPT board is connected to the micro heat pipe array heat transfer plate through a first thermally conductive silicone layer.

[0015] Preferably, in the aforementioned zero-energy temporary facility photovoltaic-storage-direct-flex system at the construction site, the temporary building's phase change thermal and cold storage enclosure structure includes phase change thermal and cold storage walls, a phase change thermal and cold storage floor, and a phase change thermal and cold storage roof. The phase change thermal and cold storage walls consist of, from the outside to the inside, a 50mm color steel rock wool sandwich panel, a 20mm vacuum insulation board, a 30mm shaped phase change material layer, and a 0.4mm color steel plate. The phase change thermal and cold storage floor consists of, from the bottom to the top, a 0.4mm color steel plate and a 50mm rock wool... The roof consists of a 0.4mm color steel plate, a 50mm rock wool board, a 20mm vacuum insulation board, a 30mm shaped phase change material layer, a 15mm magnesium oxide fireproof board, and a 2mm PVC floor mat. The phase change heat and cold storage roof includes, from top to bottom, a 0.4mm color steel plate, a 50mm rock wool board, a 20mm vacuum insulation board, a 30mm shaped phase change material layer, and a 0.4mm color steel plate. The 30mm shaped phase change material layer is embedded with a PP-R capillary grid, the capillary grid has a specification of 4.3×0.8mm, and the capillary spacing is 30mm.

[0016] As can be seen from the above-disclosed technical solutions, the beneficial effects of the present invention compared with the prior art are as follows:

[0017] 1. This invention proposes a zero-energy temporary facility for construction sites and a photovoltaic-storage-flexible system. Based on traditional photovoltaic modules, it achieves a multi-functional, high-efficiency integrated module for photovoltaic power generation, heat collection, and nighttime radiative cooling by embedding and modifying a flat-plate micro heat pipe array (i.e., a micro heat pipe array heat transfer plate) and phase change material (i.e., an encapsulated phase change material layer). This significantly improves the overall efficiency of solar energy utilization. The application of nighttime radiative cooling technology endows the integrated photovoltaic-thermal module with passive cooling capabilities.

[0018] 2. The present invention proposes a zero-energy temporary facility for construction sites and a photovoltaic-storage-direct-flexible system. Based on the traditional method of storing electricity through energy storage batteries, it realizes the functions of storing electricity, heat, and cold in the zero-energy temporary facility for construction sites, expands the energy storage methods and energy resources of temporary facilities, improves the ability of temporary facilities to cope with outdoor temperature fluctuations and flexible energy use, and can significantly improve the indoor thermal environment of temporary facilities.

[0019] 3. The present invention proposes a zero-energy temporary facility and a photovoltaic-storage-DC-flexible system for construction sites, which reduces AC-DC conversion losses and improves power efficiency through DC power distribution.

[0020] 4. The present invention proposes a zero-energy temporary facility and a photovoltaic-storage-flexible system for construction sites. By strengthening insulation and utilizing phase change materials for energy storage, it improves the thermal insulation performance of the enclosure structure of the temporary facility at the construction site, reduces the indoor heating and cooling load demand of the building, overcomes the problems of drastic temperature rise in summer or temperature drop in winter in traditional lightweight enclosure structures of temporary facilities at construction sites, and can effectively cope with outdoor temperature fluctuations.

[0021] 5. The present invention proposes a zero-energy temporary facility and a photovoltaic-storage-direct-flexible system for construction sites. Through an automatic solar tracking control device for the photovoltaic system and a solar photovoltaic panel solar tracking adjustment method, the system can achieve horizontal rotation and photovoltaic panel angle adjustment control by means of a rotating track, a rotating drive motor system and a telescopic rod control, to track the movement of the sun and maximize the energy capture efficiency of the photovoltaic panel. Attached Figure Description

[0022] Figure 1 A diagram of a photovoltaic-storage-direct-drive-flexible system for zero-energy temporary facilities at the construction site;

[0023] Figure 2 Schematic diagram of a solar power generation and thermal cooling unit device;

[0024] Figure 3 A cross-sectional view of a solar power generation and thermal cooling unit.

[0025] Figure 4 This is a schematic diagram of a DC power distribution system;

[0026] Figure 5 This is a cross-sectional view of the wall structure of a zero-energy temporary facility at the construction site.

[0027] Figure 6 This is a cross-sectional view of the roof structure of the zero-energy temporary facility at the construction site.

[0028] Figure 7 This is a cross-sectional view of the floor structure of a zero-energy temporary facility at the construction site.

[0029] Figure 8 For photovoltaic systems, an automatic control device for tracking the sun;

[0030] Figure 9 For photovoltaic support turntable system;

[0031] Figure 10 For photovoltaic panel angle adjustment components;

[0032] Figure 11 For forward extension photovoltaic units;

[0033] Figure 12 For reverse-extended photovoltaic units;

[0034] Figure 13 The orientation of the photovoltaic module panels and the solar altitude and azimuth angles;

[0035] Figure 14 This is a schematic diagram showing the solar altitude angle h (the angle between the line connecting the sun and the observation point and the horizontal plane of the observation point) and the azimuth angle A between the ground plane and the sun.

[0036] In the diagram, 1-Solar power generation and heat collection cooling unit device, 100-Photovoltaic module panel, 101-Glass cover plate, 102-First EVA encapsulation film, 103-Solar cell, 104-Second EVA encapsulation film, 105-TPT board, 106-First thermally conductive silicone layer, 107-Micro heat pipe array heat transfer plate, 108-Second thermally conductive silicone layer, 109-Encapsulation phase change material layer, 110-Second fin, 111-First fin, 112-Heat exchange manifold, 2-First circulating water pump, 3-Insulated hot water storage tank, 301-First inlet of insulated hot water storage tank, 302-First outlet of insulated hot water storage tank, 303-Second inlet of insulated hot water storage tank, 304- 305 - Second outlet of insulated hot water storage tank; 306 - Domestic hot water outlet; 4 - Insulated cold water storage tank; 401 - First inlet of insulated cold water storage tank; 402 - First outlet of insulated cold water storage tank; 403 - Second inlet of insulated cold water storage tank; 404 - Second outlet of insulated cold water storage tank; 5 - Air source heat pump unit; 501 - Compressor; 502 - Four-way reversing valve; 503 - Condenser (heating) / Evaporator (cooling); 5031 - Refrigerant inlet; 5032 - Refrigerant outlet; 5033 - Water inlet; 5034 - Water outlet; 504 - Throttling device; 505 - Evaporator (heating) / Condenser (cooling); 6 - Second circulating water. Pump, 7-Third circulating water pump, 8-Fan coil air conditioning terminal, 9-Electric valve, 300-Temporary housing phase change heat and cold storage enclosure structure, 10-Phase change heat and cold storage wall, 1001-Color steel rock wool sandwich panel, 1002-First vacuum insulation board, 1003-First shaped phase change material layer, 1004-First color steel plate, 1005-Capillary grid, 11-Phase change heat and cold storage roof, 1101-Second color steel plate, 1102-Second rock wool board, 1103-Second vacuum insulation board, 1104-Second shaped phase change material layer, 1105-Fourth color steel plate, 12-Phase change heat and cold storage floor, 1201-PVC floor mat, 1202-Magnesium oxide fireproof board, 1203-Third Shaped phase change material layer, 1204-Third vacuum insulation board, 1205-Third rock wool board, 1206-Third color steel plate, 13-Photovoltaic combiner box, 14-Photovoltaic DC converter, 15-Municipal power grid, 16-AC / DC converter, 17-DC bus, 18-Energy storage bidirectional converter, 19-Energy storage battery, 20-DC converter, 21-Indoor lighting, 22-Electric vehicle charging pile, 23-Photovoltaic bracket turntable system, 231-Support base, 232-Rotating track, 233-Connecting bracket, 234-Motor base, 235-Rotating drive motor system, 236-Motor turntable, 237-Flange, 238-First support plate, 239-Rotating roller;24-Photovoltaic panel angle adjustment component; 241-Mounting base; 242-Hydraulic cylinder base; 243-Hydraulic cylinder sleeve; 244-Telescopic rod; 245-Lower terminal; 246-Spherical hinge connector; 247-Upper terminal; 248-Second support plate; 25-Forward extending photovoltaic unit; 26-Reverse extending photovoltaic unit; 27-Top photovoltaic unit; 200-Photovoltaic system sun-tracking automatic control device; 30-Sliding module; 31-Drive motor; 32-Guide rail; 33-Slider; 34-Mounting bracket; 40-Ground plane; 50-Center line of the second support plate. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The technical content and features of the present invention will be described in detail below with reference to the listed embodiments and the accompanying drawings. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention. For ease of description, the terms "upper" and "lower" used below are consistent with the upper and lower directions in the accompanying drawings, but this should not be construed as a limitation of the technical solution of the present invention.

[0038] Please see Figures 1 to 14This embodiment discloses a zero-energy temporary facility photovoltaic-storage-flexible system for construction sites, including a solar power generation and thermal cooling unit 1, an air source heat pump unit 5, a temporary building phase change thermal and cold storage enclosure structure 300, an insulated hot water storage tank 3, an insulated cold water storage tank 4, a fan coil air conditioning terminal 8, and an electric valve 9 for system switching control. The solar power generation and thermal cooling unit 1 includes a photovoltaic module panel 100, a micro heat pipe array heat transfer plate 107, a heat exchange manifold 112, and encapsulated phase change material. The micro heat pipe array heat transfer plate 107 is laid on the lower surface of the photovoltaic module panel 100 through a first thermally conductive silicone layer 106. One end of the micro heat pipe array heat transfer plate 107 extends horizontally into the heat exchange manifold 112. The heat exchange manifold 112 is provided with a plurality of first fins 111, which are equally spaced and vertically sleeved on the outside of the micro heat pipe array heat transfer plate 107. The top of the encapsulated phase change material layer 109 is adjacent to the micro heat pipe array heat transfer plate. The surface of 107 furthest from the photovoltaic module panel 100 is connected by a second thermally conductive silicone layer 108. The encapsulated phase change material layer 109 contains several second fins 110, which are equally spaced and vertically connected to the top of the encapsulated phase change material layer 109. The solar power generation heat collection and cooling unit 1, the air source heat pump unit 5, the temporary housing phase change heat and cold storage enclosure structure 300, the insulated hot water storage tank 3, the insulated cold water storage tank 4, and the fan coil air conditioning terminal 8 are connected by pipelines. An electric valve 9 for system function switching is installed in the pipeline. By controlling the corresponding electric valve 9, the solar power generation heat collection and cooling unit 1 can supply water to the temporary housing phase change heat storage and cold storage enclosure structure 300, the insulated hot water storage tank 3 and the insulated cold water storage tank 4 respectively. The air source heat pump unit 5 can supply water to the insulated hot water storage tank 3 and the fan coil air conditioning terminal 8 respectively. The insulated hot water storage tank 3 and the insulated cold water storage tank 4 can supply water to the fan coil air conditioning terminal 8 respectively.

[0039] This invention proposes a zero-energy temporary facility photovoltaic-storage-flexible system for construction sites. By modifying traditional photovoltaic modules with a micro-heatpipe array heat transfer plate 107 (i.e., a plate micro-heatpipe array) and embedded phase change material, specifically by adding the micro-heatpipe array heat transfer plate 107, heat exchange manifold 112, and encapsulating phase change material layer 109, the heat generated by the solar power generation and heat collection cooling unit 1, as well as the cooling generated by the solar power generation and heat collection cooling unit 1 using the principle of nighttime radiative cooling, can be transferred through the micro-heatpipe array heat transfer plate 107 to the water in the heat exchange manifold 112. The water then supplies heat or cooling to the temporary housing phase change heat and cold storage enclosure structure 300, the insulated hot water storage tank 3, and the insulated cold water storage tank 4. This achieves multi-functional and highly efficient integration of photovoltaic power generation, heat collection, and nighttime radiative cooling, significantly improving the overall efficiency of solar energy utilization. The application of nighttime radiative cooling technology endows the solar power generation and heat collection cooling unit 1 with passive cooling capabilities. Furthermore, by providing a plurality of first fins 111 inside the heat exchange manifold 112, and by having the plurality of first fins 111 equally spaced and vertically sleeved on the outside of the micro heat pipe array heat transfer plate 107, the heat exchange efficiency between the micro heat pipe array heat transfer plate 107 and the heat exchange manifold 112 can be improved.

[0040] This invention achieves the switching of different system functions by controlling the opening and closing of several electric valves 9 in the relevant pipeline passages. During the day, the solar power generation and heat collection cooling unit generates electricity and produces hot water, which can be stored in the insulated hot water storage tank 3. During the day in winter, the hot water produced by the solar power generation and heat collection cooling unit can be stored in the insulated hot water storage tank 3 or transported to the temporary housing phase change heat storage and cold storage enclosure structure 300 for heat storage and radiant heating of the building walls. At night in winter, the phase change heat storage enclosure structure of the building walls dissipates heat, reducing the indoor heating load of the building. Furthermore, based on the principle of nighttime radiative cooling, during summer nights, the solar power generation and heat collection cooling unit cools down due to nighttime radiation. The embedded micro heat pipe array heat transfer plate 107 can transfer the cooling energy to the heat exchange manifold 112. Through heat exchange, chilled water can be produced. The produced chilled water can be transported to the temporary housing phase change heat storage and cold storage enclosure structure 300 for cold storage of the building walls and radiative cooling of the building interior. During summer days, the building phase change cold storage enclosure structure absorbs indoor heat, reducing the indoor air conditioning load. The produced chilled water can also be stored in the insulated cold water tank 4 for cooling of the temporary housing indoor fan coil air conditioning terminal 8 during summer days.

[0041] Preferably, in the above-mentioned zero-energy temporary facility solar-storage-direct-flexible system at the construction site, the pipeline is further equipped with several circulating water pumps, including a first circulating water pump 2, a second circulating water pump 6, and a third circulating water pump 7. The outlet of the solar power generation and heat collection cooling unit 1 is connected to the inlet of the second circulating water pump 6 and the first inlet 301 of the insulated hot water storage tank, respectively. The outlet of the second circulating water pump 6 is connected to the first inlet 401 of the insulated cold water storage tank and the inlet of the temporary building phase change heat storage and cold storage enclosure structure 300, respectively. The outlet of the temporary building phase change heat storage and cold storage enclosure structure 300 is connected to the inlet of the solar power generation and heat collection cooling unit 1, and the outlet of the air source heat pump unit 5 is connected to the inlet of the third circulating water pump 7 and the first inlet 301 of the insulated hot water storage tank, respectively. The insulated hot water storage tank has a first outlet 302 connected to the inlet of the first circulating water pump 2. The outlet of the first circulating water pump 2 is connected to the inlet of the solar power generation heat collection and cooling unit 1 and the inlet of the air source heat pump unit 5. The outlet of the third circulating water pump 7 is connected to the inlet of the fan coil air conditioner terminal 8. The outlet of the fan coil air conditioner terminal 8 is connected to the inlet of the air source heat pump unit 5, the second inlet 303 of the insulated hot water storage tank, and the second inlet 403 of the insulated cold water storage tank. The inlet of the third circulating water pump 7 is connected to the second outlet 304 of the insulated hot water storage tank and the second outlet 404 of the insulated cold water storage tank. The insulated hot water storage tank 3 is also provided with a tap water inlet 305 and a domestic hot water outlet 306. By setting the first circulating water pump 2, the water in the insulated cold storage water tank 4 can be promoted to flow back to the inlet of the solar power generation and heat collection cooling unit 1 or the inlet of the air source heat pump unit 5; by setting the second circulating water pump 6, the solar power generation and heat collection cooling unit 1 can be promoted to supply water to the temporary housing phase change heat storage and cold storage enclosure structure 300 and / or the insulated cold storage water tank 4; by setting the third circulating water pump 7, the insulated cold storage water tank 4 or the insulated hot water tank 3 can be promoted to supply water to the fan coil air conditioning terminal 8.

[0042] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flex system at the construction site, the air source heat pump unit 5 includes a compressor 501, a four-way reversing valve 502, a condenser (heating) / evaporator (cooling) 503, a throttling device 504, an evaporator (heating) / condenser (cooling) 505, a refrigerant inlet 5031, a refrigerant outlet 5032, a water inlet 5033, and a water outlet 5034. The four-way reversing valve 502, the condenser (heating) / evaporator (cooling) 503, the throttling device 504, and the evaporator (heating) / condenser (cooling) 505 are connected in sequence. The outlet of the evaporator (heating) / condenser (cooling) 505 is connected to one inlet of the four-way reversing valve 502. The inlet of (refrigeration) 505 is connected to the outlet of throttling device 504. The inlet of throttling device 504 is connected to the refrigerant outlet 5032 of condenser (heating) / evaporator (refrigeration) 503. The refrigerant inlet 5031 of condenser (heating) / evaporator (refrigeration) 503 is connected to one outlet of four-way reversing valve 502. The outlet of compressor 501 is connected to the other inlet of four-way reversing valve 502. The inlet of compressor 501 is connected to the other outlet of four-way reversing valve 502. The water inlet 5033 of condenser (heating) / evaporator (refrigeration) 503 serves as the water inlet of air source heat pump unit 5. The water outlet 5034 of condenser (heating) / evaporator (refrigeration) 503 serves as the water outlet of air source heat pump unit 5. Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-DC-flexible system at the construction site, the photovoltaic module 100 of the solar power generation and thermal cooling unit 1 is electrically connected to the photovoltaic combiner box 13, the photovoltaic combiner box 13 is electrically connected to the photovoltaic DC converter 14, the photovoltaic DC converter 14 is electrically connected to the DC bus 17, the DC bus 17 is connected to the municipal power grid 15 via the AC / DC converter 16, the DC bus 17 is electrically connected to the energy storage battery 19 via the energy storage bidirectional converter 18, and the DC bus 17 is electrically connected to the DC load, which includes an electric vehicle charging pile 22, an air source heat pump unit 5, a circulating water pump, a fan coil air conditioning terminal 8, an electric valve 9, and indoor lighting 21. Thus, the electricity generated by the solar power generation and heat collection cooling unit 1 can sequentially pass through the photovoltaic combiner box 13 and the photovoltaic DC converter 14 into the DC bus 17 to supply power to DC loads such as electric vehicle charging pile 22, air source heat pump unit 5, circulating water pump, fan coil air conditioning terminal 8, and indoor lighting 21, and charge the energy storage battery 19.

[0043] This invention proposes a photovoltaic-storage-DC-flexible system for zero-energy temporary facilities at construction sites. Building upon the traditional method of storing electricity via energy storage batteries 19, this system enables the storage of electricity, heat, and cold energy at construction sites, expanding the energy storage methods and resources available for temporary facilities. It also enhances the ability of temporary facilities to cope with outdoor temperature fluctuations and to utilize energy flexibly, significantly improving the indoor thermal environment of the temporary facilities. Furthermore, this invention reduces AC-DC conversion losses through DC power distribution, effectively improving power efficiency.

[0044] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the solar power generation and thermal cooling unit 1 is mounted on the photovoltaic system tracking automatic control device 200. The photovoltaic system tracking automatic control device 200 includes: a photovoltaic support turntable system 23, a first support plate 238, a photovoltaic panel angle adjustment component 24, a second support plate 248, a forward-extending photovoltaic unit 25, a reverse-extending photovoltaic unit 26, and a top photovoltaic unit 27. The photovoltaic support turntable system 23 is mounted on the top of the temporary facility (such as a container). The first support plate 238 is mounted on the photovoltaic support turntable system 23, and the photovoltaic support turntable system 23 can drive the first support plate 238 to rotate. The support plate 248 is mounted on the first support plate 238 via four photovoltaic panel angle adjustment components 24. The four photovoltaic panel angle adjustment components 24 are distributed at the four corners of the second support plate 248. The solar power generation and heat collection cooling unit device 1 is mounted on the second support plate 248, and the photovoltaic module panel 100 in the solar power generation and heat collection cooling unit device 1 is parallel to the second support plate 248. The angle between the second support plate 248 and the horizontal plane can be adjusted by the photovoltaic panel angle adjustment components 24, thereby adjusting the angle between the photovoltaic module panel 100 in the solar power generation and heat collection cooling unit device 1 and the horizontal plane, so that the photovoltaic module panel 100 can absorb as much solar energy as possible.

[0045] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the solar power generation, heat collection and cooling unit device 1 includes a top photovoltaic unit 27, which is disposed on the second support plate 248 and is parallel to the second support plate 248.

[0046] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the solar power generation, heat collection, and cooling unit device 1 further includes a forward-extending photovoltaic unit 25 and a reverse-extending photovoltaic unit 26. The forward-extending photovoltaic unit 25 and the reverse-extending photovoltaic unit 26 are respectively mounted on the second support plate 248 through a pair of sliding modules 30. The forward-extending photovoltaic unit 25 and the reverse-extending photovoltaic unit 26 are parallel to the second support plate 248. The sliding module 30 for mounting the forward-extending photovoltaic unit 25 is fixedly disposed on the lower surface of the second support plate 248, and the sliding module for mounting the reverse-extending photovoltaic unit 26 is fixedly disposed on the upper surface of the second support plate 248. The sliding module 30 includes a drive motor 31, a guide rail 32, and a slider 33. The drive motor 31 can drive the slider 33 to move along the guide rail 32. The slider 33 is fixedly connected to the forward-extending photovoltaic unit 25 or the reverse-extending photovoltaic unit 26 through a corresponding mounting bracket 34. By adding forward-extending photovoltaic units 25 and reverse-extending photovoltaic units 26, the light-receiving area of ​​the solar power generation and thermal cooling unit device 1 can be expanded.

[0047] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the photovoltaic support turntable system 23 includes a support base 231, a rotary track 232, a connecting bracket 233, a motor base 234, a rotary drive motor system 235, a motor turntable 236, a flange 237, and rotary rollers 239. The support base 231 is installed on the top of the temporary facility (such as a container) and is firmly connected to the top load-bearing structure of the temporary facility. The rotary track 232 and the connecting bracket 233 are respectively fixedly installed on the support base 231, and the connecting bracket 233 is located in the middle of the rotary track 232. At the central position, the motor base 234 is located on top of the connecting bracket 233, the rotary drive motor system 235 is located on the motor base 234, the motor rotary table 236 is located on the rotary drive motor system 235, the flange 237 is fixedly connected to the motor rotary table 236, the first support plate 238 is located on top of the flange 237, and the rotary roller 239 is fixedly connected to the lower part of the first support plate 238 through a connecting rod. When the rotary drive motor system 235 drives the motor rotary table 236 to rotate, the rotary roller 239 can move on the rotary track 232. The photovoltaic bracket turntable system 23 with the above structure can achieve free rotation of the second support plate 248, allowing the photovoltaic module panel 100 of the solar power generation and thermal cooling unit device 1 located on the second support plate 248 to face the sun vertically, improving the solar energy capture efficiency of the photovoltaic module panel 100. Furthermore, the second support plate 248 and the photovoltaic module 100 mounted on it can be horizontally rotated via the rotary track 232 and the rotary drive motor system 235 to track the sun's movement and maximize the energy capture efficiency of the photovoltaic module 100. The connection between the motor rotary table 236 and the flange 237 ensures smooth and reliable rotation of the second support plate 248 and the photovoltaic module 100 mounted on it, guaranteeing normal operation of the photovoltaic module 100 under different weather conditions; the rotary roller 239 reduces friction during rotation, minimizing energy loss; and the robust connection of the entire system ensures the reliability of the photovoltaic system's automatic sun-tracking control device 200.

[0048] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, the photovoltaic panel angle adjustment component 24 includes a mounting base 241, a hydraulic cylinder base 242, a hydraulic cylinder sleeve 243, a telescopic rod 244, a lower terminal 245, a ball joint connector 246, and an upper terminal 247. The mounting base 241 is fixedly mounted on the first support plate 238, the hydraulic cylinder base 242 is mounted on the mounting base 241, the hydraulic cylinder sleeve 243 is mounted on the hydraulic cylinder base 242, and the lower terminal 247 of the telescopic rod 244 is mounted on the upper terminal 245. The upper end of the telescopic rod 244 is located inside the cylinder sleeve 243. The upper end of the telescopic rod 244 is connected to the lower terminal 245. A ball joint connector 246 is provided between the lower terminal 245 and the upper terminal 247. The upper terminal 247 is fixedly mounted on the lower surface of the second support plate 248. The telescopic rods 244 can extend and retract relative to their respective cylinder sleeves 243. The extension and retraction of each telescopic rod 244 can drive the corresponding upper terminal 247 to move up and down, thereby adjusting the angle between the second support plate 248 and the horizontal plane. By using the above-mentioned photovoltaic panel angle adjustment component 24, the angle between the second support plate 248 and the horizontal plane can be adjusted so that sunlight can be perpendicularly irradiated onto the photovoltaic module panel 100 of the solar power generation and heat collection cooling unit device 1, thereby improving the solar energy capture efficiency of the photovoltaic module panel 100.

[0049] By employing the photovoltaic support turntable system 23 and photovoltaic panel angle adjustment component 24 with the above structure, and by controlling the rotary drive motor system 235 and the telescopic rod 244, the present invention can realize the horizontal rotation and angle adjustment control of the photovoltaic module panel 100 of the second support plate 248 and the solar power generation heat collection and cooling unit device 1 on it, so that the photovoltaic module panel 100 can track the movement of the sun and maximize the solar energy capture efficiency of the photovoltaic module panel 100.

[0050] Preferably, in the above-mentioned zero-energy temporary facility photovoltaic-storage-direct-flex system at the construction site, the temporary building phase change thermal and cold storage enclosure structure 300 includes a phase change thermal and cold storage wall 10, a phase change thermal and cold storage floor 12, and a phase change thermal and cold storage roof 11.

[0051] The phase change heat and cold storage wall 10 includes, from the outside to the inside, a 50mm thick color steel rock wool sandwich panel 1001, a 20mm thick first vacuum insulation panel 1002, a 30mm thick first shaped phase change material layer 1003, and a 0.4mm thick first color steel plate 1004. The 30mm thick first shaped phase change material layer 1003 is embedded with a PP-R capillary grid 1005. The capillary grid 1005 has a specification of 4.3×0.8mm and a capillary spacing of 30mm.

[0052] The phase change thermal and cold storage roof plate 11 includes, from top to bottom, a 0.4mm thick second color steel plate 1101, a 50mm thick second rock wool plate 1102, a 20mm thick second vacuum insulation plate 1103, a 30mm thick second shaped phase change material layer 1104, and a 0.4mm thick fourth color steel plate 1105. The 30mm thick second shaped phase change material layer 1104 is embedded with a PP-R capillary grid 1005. The capillary grid 1005 has a specification of 4.3×0.8mm and a capillary spacing of 30mm.

[0053] The phase change thermal and cold storage floor 12 includes, from bottom to top, a 0.4mm thick third color steel plate 1206, a 50mm thick third rock wool board 1205, a 20mm thick third vacuum insulation board 1204, a 30mm thick third shaped phase change material layer 1203, a 15mm thick glass magnesium fireproof board 1202, and a 2mm thick PVC floor mat 1201. The 30mm thick third shaped phase change material layer 1203 is embedded with a PP-R capillary grid. The capillary grid 1005 has a specification of 4.3×0.8mm and a capillary spacing of 30mm.

[0054] The phase change thermal and cold storage wall 10, phase change thermal and cold storage floor 12, and phase change thermal and cold storage roof 11 with the above-mentioned structure improve the thermal insulation performance of the temporary facility enclosure structure at the construction site by strengthening the insulation and utilizing the energy storage of phase change materials, reducing the indoor heating and cooling load demand of the building, overcoming the problems of drastic temperature rise in summer or temperature drop in winter in traditional lightweight enclosure structures of temporary facilities at construction sites, and can effectively cope with outdoor temperature fluctuations.

[0055] Preferably, in the aforementioned zero-energy temporary photovoltaic-storage-direct-flexible system for construction sites, the photovoltaic module panel includes, sequentially laid, a glass cover plate 101, a first EVA encapsulation film 102, solar cells 103, a second EVA encapsulation film 104, and a TPT board 105. The TPT board 105 is connected to a micro heat pipe array heat transfer plate 107 via a first thermally conductive silicone layer 106. The first EVA encapsulation film 102 and the second EVA encapsulation film 104 are made of ethylene-vinyl acetate copolymer (EVA), a general-purpose polymer with the molecular formula (C2H4). x (C4H6O2) y It is flammable, and the combustion odor is non-irritating. The TPT board 105 is the backsheet of the photovoltaic module. TPT is an abbreviation for polyvinyl fluoride composite film, Tedlar / PET / Tedlar. The TPT board 105 has a three-layer structure: the outer protective layer PVF has good resistance to environmental corrosion, the middle layer is a polyester film with good insulation properties, and the inner PVF has good adhesion properties due to surface treatment and EVA.

[0056] This invention also discloses a method for using a zero-energy temporary facility photovoltaic-storage-direct-flexible system at a construction site. The zero-energy temporary facility photovoltaic-storage-direct-flexible system includes a solar power generation and thermal cooling unit 1, an air source heat pump unit 5, a temporary housing phase change thermal and cold storage enclosure structure 300, an insulated hot water storage tank 3, an insulated cold water storage tank 4, a fan coil air conditioning terminal 8, and an electric valve 9. The solar power generation and thermal cooling unit 1 includes a photovoltaic module panel 100, a micro heat pipe array heat transfer plate 107, a heat exchange manifold 112, and an encapsulated phase change material layer 109. The micro heat pipe array heat transfer plate 107 is laid on the lower surface of the photovoltaic module panel 100 through a first thermally conductive silicone layer 106. One end of the micro heat pipe array heat transfer plate 107 extends horizontally into the heat exchange manifold 112. The heat exchange manifold 112 contains a plurality of first fins 111, which are vertically sleeved at equal intervals on the outside of the micro heat pipe array heat transfer plate 107. On one side, the top of the encapsulated phase change material layer 109 is connected to the surface of the micro heat pipe array heat transfer plate 107 away from the photovoltaic module panel 100 through a second thermally conductive silicone layer 108. The encapsulated phase change material layer 109 is provided with a plurality of second fins 110, which are vertically connected to the top of the encapsulated phase change material layer 109 at equal intervals. The first fins 111 are made of copper and have through holes for the micro heat pipe array heat transfer plate 107 to pass through. The first fins 111 are fixedly connected to the micro heat pipe array heat transfer plate 107. The heat or cold energy on the micro heat pipe array heat transfer plate 107 is rapidly and uniformly exchanged with the water in the heat exchange manifold 112 through the spaced first fins 111. Through the spaced second fins 110, the heat or cold energy of the photovoltaic module panel 100 can be rapidly and uniformly exchanged with the phase change material in the encapsulated phase change material layer 109. The solar power generation and cooling unit 1, air source heat pump unit 5, temporary housing phase change heat and cold storage enclosure structure 300, insulated hot water storage tank 3, insulated cold water storage tank 4, and fan coil air conditioning terminal 8 are connected by pipelines. Electric valves 9 for system function switching are installed in the pipelines. By controlling the corresponding electric valves 9, the solar power generation and cooling unit 1 can supply water to the temporary housing phase change heat and cold storage enclosure structure 300, the insulated hot water storage tank 3, and the insulated cold water storage tank 4 respectively; the air source heat pump unit 5 can supply water to the insulated hot water storage tank 3 and the fan coil air conditioning terminal 8 respectively; and the insulated hot water storage tank 3 and the insulated cold water storage tank 4 can supply water to the fan coil air conditioning terminal 8 respectively, thereby realizing multiple operating modes. These multiple operating modes include solar photovoltaic power generation mode, nighttime radiant cooling mode, solar heating mode, air source heat pump unit auxiliary heating mode, and air source heat pump unit auxiliary cooling mode, etc.

[0057] Preferably, in the above-described method of using the zero-energy temporary facility solar-storage-flexible system at the construction site, the pipeline is further equipped with several circulating water pumps, including a first circulating water pump 2, a second circulating water pump 6, and a third circulating water pump 7. The outlet of the solar power generation and heat collection cooling unit 1 is connected to the inlet of the second circulating water pump 6 and the first inlet 301 of the insulated hot water storage tank, respectively. The outlet of the second circulating water pump 6 is connected to the first inlet 401 of the insulated cold water storage tank and the inlet of the temporary building phase change heat storage and cold storage enclosure structure 300, respectively. The outlet of the temporary building phase change heat storage and cold storage enclosure structure 300 is connected to the inlet of the solar power generation and heat collection cooling unit 1, and the outlet of the air source heat pump unit 5 is connected to the third circulating water pump 7. The inlet is connected to the first inlet 301 of the insulated hot water storage tank. The first outlet 302 of the insulated hot water storage tank is connected to the inlet of the first circulating water pump 2. The outlet of the first circulating water pump 2 is connected to the inlet of the solar power generation heat collection and cooling unit 1 and the inlet of the air source heat pump unit 5. The outlet of the third circulating water pump 7 is connected to the inlet of the fan coil air conditioner terminal 8. The outlet of the fan coil air conditioner terminal 8 is connected to the inlet of the air source heat pump unit 5, the second inlet 303 of the insulated hot water storage tank, and the second inlet 403 of the insulated cold water storage tank. The inlet of the third circulating water pump 7 is connected to the second outlet 304 of the insulated hot water storage tank and the second outlet 404 of the insulated cold water storage tank.

[0058] Preferably, the above-described method for using the zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site includes multiple operating modes, such as solar photovoltaic power generation heat collection mode, nighttime radiant cooling mode, solar heating mode, air source heat pump unit auxiliary heating mode, air source heat pump unit auxiliary cooling mode, etc. Specifically:

[0059] Preferably, in the above-described method of using the zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site, a solar photovoltaic power generation and heat collection mode is included: During the day, the solar power generation and heat collection cooling unit 1 operates, the electric valve 9 between the solar power generation and heat collection cooling unit 1 and the insulated hot water storage tank 3 is opened, the first circulating water pump 2 is turned on, the solar power generation and heat collection cooling unit 1 generates electricity and produces hot water at the same time, the hot water is stored in the insulated hot water storage tank 3, and the generated hot water can be used for domestic hot water; the electricity generated by the solar power generation and heat collection cooling unit 1 passes through the photovoltaic combiner box 13 and the photovoltaic DC converter 14 in sequence and enters the DC bus 17 to supply power to any of the DC loads among the electric vehicle charging pile 22, air source heat pump unit, circulating water pump, fan coil air conditioning terminal, and indoor lighting 21, and charges the energy storage battery 19.

[0060] Preferably, the method of using the zero-energy temporary facility photovoltaic-storage-direct-flexible system at the construction site as described above also includes a nighttime radiative cooling mode: During summer nights, the electric valve 9 between the solar power generation and cooling unit 1 and the insulated cold water tank 4 is opened, and the second circulating water pump 6 is turned on. The solar power generation and cooling unit 1 generates cold water, which flows into the insulated cold water tank 4. Alternatively, the electric valve 9 between the solar power generation and cooling unit 1 and the temporary building phase change thermal and cold storage enclosure structure 300 is opened, allowing cold water to flow into the temporary building phase change thermal and cold storage enclosure structure 300, thus storing cooling energy within it. During summer days, the building phase change cold storage enclosure structure absorbs indoor heat, reducing the building's indoor air conditioning load. During summer days, the electric valve 9 between the insulated cold water tank 4 and the fan coil air conditioning terminal 8 is opened, and the third circulating water pump 7 is turned on, allowing the cold water from the insulated cold water tank 4 to flow through the fan coil air conditioning terminal 8 for indoor cooling.

[0061] Preferably, the method of using the zero-energy temporary facility solar-storage-direct-flex system at the construction site as described above also includes a solar heating mode: During the daytime in winter, the electric valve 9 between the solar power generation and heat collection cooling unit 1 and the temporary building phase change heat storage and cold storage enclosure structure 300 is opened, and the hot water produced by the solar power generation and heat collection cooling unit 1 can be transported to the temporary building phase change heat storage and cold storage enclosure structure 300 through the second circulating water pump 6 for heat storage and radiant heating of the building walls; At nighttime in winter, the phase change heat storage wall of the building wall dissipates heat, reducing the indoor heating load of the building; At nighttime in winter, the electric valve 9 between the insulated hot water storage tank 3 and the fan coil air conditioning terminal 8 is opened, the third circulating water pump 7 is turned on, and the hot water in the insulated hot water storage tank 3 flows through the fan coil air conditioning terminal 8 to provide indoor heating.

[0062] Preferably, in the above-described method of using the zero-energy temporary facility photovoltaic-storage-direct-flex system at the construction site, an auxiliary heating mode of the air source heat pump unit is also included: when the air source heat pump unit is in heating mode, the first circulating water pump 2 is turned on, and the electric valve 9 between the air source heat pump unit and the insulated hot water storage tank 3 is opened, so that the generated hot water can be used for domestic hot water; or, the third circulating water pump 7 is turned on, and the electric valve 9 between the air source heat pump unit and the fan coil air conditioning terminal 8 is opened, so that the air source heat pump unit directly provides indoor heating for the temporary building through the fan coil air conditioning terminal 8.

[0063] Preferably, in the above-described method of using the zero-energy temporary facility photovoltaic-storage-direct-flex system at the construction site, an auxiliary cooling mode of the air source heat pump unit is also included: when the air source heat pump unit is in cooling mode, the third circulating water pump 7 is turned on, the electric valve 9 between the air source heat pump unit and the fan coil air conditioning terminal 8 is turned on, and the air source heat pump unit directly provides indoor cooling for the temporary building through the fan coil air conditioning terminal 8.

[0064] Preferably, in the above-described method of using a zero-energy temporary facility photovoltaic-storage-direct-flexible system at a construction site, the solar power generation and thermal cooling unit 1 is mounted on the photovoltaic system tracking automatic control device 200. The photovoltaic system tracking automatic control device 200 includes: a photovoltaic support turntable system 23, a first support plate 238, photovoltaic panel angle adjustment components 24, a second support plate 248, forward-extending photovoltaic units 25, reverse-extending photovoltaic units 26, and a top photovoltaic unit 27. The photovoltaic support turntable system 23 is mounted on the top of the temporary facility. The first support plate 238 is mounted on the photovoltaic support turntable system 23, and the photovoltaic support turntable system 23 can drive the first support plate 238 to rotate. The second support plate 248 is mounted on the first support plate 238 via four photovoltaic panel angle adjustment components 24, which are distributed at the four corners of the second support plate 248. The solar power generation and thermal cooling unit 1 is mounted on the second support plate 248, and the photovoltaic module 1 in the solar power generation and thermal cooling unit 1... The photovoltaic panel angle adjustment component 24 can adjust the angle between the second support plate 248 and the horizontal plane, which is parallel to the second support plate 248. The photovoltaic panel angle adjustment component 24 includes a mounting base 241, a cylinder base 242, a cylinder sleeve 243, a telescopic rod 244, a lower terminal 245, a ball joint connector 246, and an upper terminal 247. The mounting base 241 is fixedly mounted on the first support plate 238, the cylinder base 242 is mounted on the mounting base 241, and the cylinder sleeve 243 is mounted on the cylinder base. On 242, the lower end of the telescopic rod 244 is disposed inside the cylinder sleeve 243, and the upper end of the telescopic rod 244 is connected to the lower terminal 245. A ball joint connector 246 is disposed between the lower terminal 245 and the upper terminal 247, and the upper terminal 247 is fixedly disposed on the lower surface of the second support plate 248. The telescopic rods 244 can extend and retract relative to their respective cylinder sleeves 243. The extension and retraction of each telescopic rod 244 can drive the corresponding upper terminal 247 to move up and down, thereby adjusting the angle between the second support plate 248 and the horizontal plane. By adopting the photovoltaic bracket turntable system 23 and photovoltaic panel angle adjustment component 24 with the above structure, the present invention can realize the horizontal rotation and angle adjustment control of the photovoltaic module panel 100 of the second support plate 248 and the solar power generation heat collection and cooling unit device 1 on it by controlling the rotary drive motor system 235 and the telescopic rod 244, so that the photovoltaic module panel 100 can track the movement of the sun and maximize the solar energy capture efficiency of the photovoltaic module panel 100. Furthermore, the second support plate 248 and the photovoltaic module 100 mounted on it can be rotated horizontally by means of the rotary track 232 and the rotary drive motor system 235 to track the movement of the sun and maximize the energy capture efficiency of the photovoltaic module 100.The connection between the motor rotary table 236 and the flange 237 ensures that the rotation of the second support plate 248 and the photovoltaic module 100 mounted on it is smooth and reliable, ensuring that the photovoltaic module 100 can still operate normally under different weather conditions; the rotary roller 239 reduces friction during rotation and reduces energy loss; the stable connection of the entire system ensures reliability and long-term performance in the photovoltaic bracket control system.

[0065] Preferably, in the above-described method of using a zero-energy temporary facility photovoltaic-storage-direct-flexible system at a construction site, the photovoltaic system's automatic solar tracking control device 200 is adjusted through the following steps:

[0066] S1: The second support plate 248 is a rectangular plate. The angle between the second support plate 248 and the due north direction is θ, that is, the angle between the midline 50 of the second support plate and the due north direction is θ, and clockwise rotation is positive. The four corners of the second support plate 248 are supported by a photovoltaic panel angle adjustment component 24. The telescopic rod 244 of each photovoltaic panel angle adjustment component 24 can be freely extended and retracted. The extension length of the telescopic rod 244 corresponding to the four corners is l. a l b l c l d The maximum elongation length is L, when l a =l b =l c =l d At the time, the photovoltaic panel is in a horizontal state. When each telescopic rod 244 extends or retracts independently, the photovoltaic panel will tilt.

[0067] S2: Define a reference length L0, which is the length that the four telescopic rods 244 should reach when the sun is directly overhead. At this time, the second support plate 248 points vertically towards the sun, that is, the sun is vertically incident on the photovoltaic module plate 100 parallel to the second support plate 248.

[0068] S3: Please refer to Figure 14 Using the latitude and longitude of the region, establish functions for the solar altitude angle h (the angle between the line connecting the sun and the observation point and the horizontal plane of the observation point) and azimuth angle A (the angle between the line connecting the sun and the observation point and the projection on the ground and the east direction) of the region and the current date d and time t, respectively, which are h(d,t) and A(d,t), where the value of h ranges from 0 to 90 degrees and the value of A ranges from 0 to 180 degrees; Figure 14 The ellipse represents the ground plane at 40°.

[0069] S4: Calculate the current time l using the following simplified formulas. a l b l c l d The possible values ​​of:

[0070] l a =L0+(cos(θ)-sin(θ))(1-h(d,t) / 90)×(1-A(d,t) / 90)(L-L0)

[0071] l b =L0-(cos(θ)+sin(θ))(1-h(d,t) / 90)×(1-A(d,t) / 90)(L-L0)

[0072] l c =L0-(cos(θ)-sin(θ))(1-h(d,t) / 90)×(1-A(d,t) / 90)(L-L0)

[0073] l d =L0+(cos(θ)+sin(θ))(1-h(d,t) / 90)×(1-A(d,t) / 90)(L-L0);

[0074] S5: Based on the changes in the current date d and time t, the length of each telescopic rod 244 is dynamically adjusted through the drive system of the four telescopic rods 244, so that they respectively reach l a , l b , l c , l d The corresponding value causes the photovoltaic panel to tilt at a corresponding angle, ensuring that the sun always shines perpendicularly onto the photovoltaic module panel 100, which is parallel to the second support plate 248.

[0075] In the method of using the photovoltaic-storage-direct-flexible system for zero-energy temporary facilities at construction sites provided by the present invention, the photovoltaic system’s automatic solar tracking control device 200 is automatically controlled by adopting the above steps. Based on the latitude and longitude of the location and the current date and time, it can automatically track the angle of the sun’s incidence and adjust the angle of the second support plate 248 and the solar power generation and heat collection cooling unit on it in a timely manner, thereby maximizing the collection of solar energy and effectively improving the system’s efficiency and energy output.

[0076] In summary, the present invention has the following beneficial effects:

[0077] 1. This invention proposes a zero-energy temporary facility for construction sites and a photovoltaic-storage-flexible system. Based on traditional photovoltaic modules, it achieves a multi-functional, high-efficiency integrated module for photovoltaic power generation, heat collection, and nighttime radiative cooling by embedding and modifying a flat-plate micro heat pipe array (i.e., a micro heat pipe array heat transfer plate) and phase change material (i.e., an encapsulated phase change material layer). This significantly improves the overall efficiency of solar energy utilization. The application of nighttime radiative cooling technology endows the integrated photovoltaic-thermal module with passive cooling capabilities.

[0078] 2. The present invention proposes a zero-energy temporary facility for construction sites and a photovoltaic-storage-direct-flexible system. Based on the traditional method of storing electricity through energy storage batteries, it realizes the functions of storing electricity, heat, and cold in the zero-energy temporary facility for construction sites, expands the energy storage methods and energy resources of temporary facilities, improves the ability of temporary facilities to cope with outdoor temperature fluctuations and flexible energy use, and can significantly improve the indoor thermal environment of temporary facilities.

[0079] 3. The present invention proposes a zero-energy temporary facility and a photovoltaic-storage-DC-flexible system for construction sites, which reduces AC-DC conversion losses and improves power efficiency through DC power distribution.

[0080] 4. The present invention proposes a zero-energy temporary facility and a photovoltaic-storage-flexible system for construction sites. By strengthening insulation and utilizing phase change materials for energy storage, it improves the thermal insulation performance of the enclosure structure of the temporary facility at the construction site, reduces the indoor heating and cooling load demand of the building, overcomes the problems of drastic temperature rise in summer or temperature drop in winter in traditional lightweight enclosure structures of temporary facilities at construction sites, and can effectively cope with outdoor temperature fluctuations.

[0081] 5. The present invention proposes a zero-energy temporary facility and a photovoltaic-storage-direct-flexible system for construction sites. Through an automatic solar tracking control device for the photovoltaic system and a solar photovoltaic panel solar tracking adjustment method, the system can achieve horizontal rotation and photovoltaic panel angle adjustment control by means of a rotating track, a rotating drive motor system and a telescopic rod control, to track the movement of the sun and maximize the energy capture efficiency of the photovoltaic panel.

[0082] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A zero-energy temporary facility photovoltaic-storage-DC-flexible system for construction sites, characterized in that, The system includes a solar power generation and thermal cooling unit, an air source heat pump unit, a temporary housing phase change thermal and cold storage enclosure structure, an insulated hot water storage tank, an insulated cold water storage tank, a fan coil unit air conditioning terminal, and an electric valve. The solar power generation and thermal cooling unit includes a photovoltaic module panel, a micro heat pipe array heat transfer plate, a heat exchange manifold, and an encapsulated phase change material layer. The micro heat pipe array heat transfer plate is laid on the lower surface of the photovoltaic module panel through a first thermally conductive silicone layer. One end of the micro heat pipe array heat transfer plate extends horizontally into the heat exchange manifold, which contains several first fins. These first fins are vertically and evenly spaced on the outer side of the micro heat pipe array heat transfer plate. The top of the encapsulated phase change material layer is connected to the surface of the micro heat pipe array heat transfer plate furthest from the photovoltaic module panel through a second thermally conductive silicone layer. Next, the encapsulated phase change material layer is provided with a plurality of second fins, which are vertically connected to the top of the encapsulated phase change material layer at equal intervals. The solar power generation heat collection and cooling unit, the air source heat pump unit, the temporary housing phase change heat storage and cold storage enclosure structure, the insulated hot water tank, the insulated cold water tank, and the fan coil air conditioning terminal are connected by pipelines. Electric valves for system function switching are installed in the pipelines. By controlling the corresponding electric valves, the solar power generation heat collection and cooling unit can supply water to the temporary housing phase change heat storage and cold storage enclosure structure, the insulated hot water tank, and the insulated cold water tank, respectively. The air source heat pump unit can supply water to the insulated hot water tank and the fan coil air conditioning terminal, respectively. The insulated hot water tank and the insulated cold water tank can supply water to the fan coil air conditioning terminal, respectively.

2. The zero-energy temporary facility photovoltaic-storage-DC-flexible system for construction sites as described in claim 1, characterized in that, The pipeline is also equipped with several circulating water pumps, including a first circulating water pump, a second circulating water pump, and a third circulating water pump. The outlet of the solar power generation and heat collection cooling unit is connected to the inlet of the second circulating water pump and the first inlet of the insulated hot water storage tank. The outlet of the second circulating water pump is connected to the first inlet of the insulated cold water storage tank and the inlet of the temporary housing phase change heat storage and cold storage enclosure structure. The outlet of the temporary housing phase change heat storage and cold storage enclosure structure is connected to the inlet of the solar power generation and heat collection cooling unit. The outlet of the air source heat pump unit is connected to the inlet of the third circulating water pump and the first inlet of the insulated hot water storage tank. The inlet of the insulated hot water storage tank is connected to the inlet of the first circulating water pump. The outlet of the first circulating water pump is connected to the inlet of the solar power generation heat collection and cooling unit and the inlet of the air source heat pump unit. The outlet of the third circulating water pump is connected to the inlet of the fan coil air conditioner terminal. The outlet of the fan coil air conditioner terminal is connected to the inlet of the air source heat pump unit, the second inlet of the insulated hot water storage tank, and the second inlet of the insulated cold water storage tank. The inlet of the third circulating water pump is connected to the second outlet of the insulated hot water storage tank and the second outlet of the insulated cold water storage tank.

3. The zero-energy temporary facility photovoltaic-storage-DC-flexible system for construction sites as described in claim 1, characterized in that, The photovoltaic module of the solar power generation and thermal cooling unit is electrically connected to the photovoltaic combiner box, which is electrically connected to the photovoltaic DC converter. The photovoltaic DC converter is electrically connected to the DC bus, which is connected to the municipal power grid via an AC / DC converter. The DC bus is electrically connected to the energy storage battery via an energy storage bidirectional converter, and the DC bus is electrically connected to the DC load, which includes electric vehicle charging piles, air source heat pump units, circulating water pumps, fan coil air conditioning terminals, electric valves, and indoor lighting.

4. The zero-energy temporary facility photovoltaic-storage-DC-flexible system for construction sites as described in claim 1, characterized in that, The solar power generation and thermal cooling unit is mounted on the photovoltaic system's automatic solar tracking control device. The automatic solar tracking control device includes: a photovoltaic support turntable system, a first support plate, photovoltaic panel angle adjustment components, a second support plate, forward-extending photovoltaic units, reverse-extending photovoltaic units, and a top photovoltaic unit. The photovoltaic support turntable system is mounted on the top of the temporary facility. The first support plate is mounted on the photovoltaic support turntable system, which can drive the first support plate to rotate. The second support plate is mounted on the first support plate via four photovoltaic panel angle adjustment components, distributed at the four corners of the second support plate. The solar power generation and thermal cooling unit is mounted on the second support plate, and the photovoltaic panels in the solar power generation and thermal cooling unit are parallel to the second support plate. The angle between the second support plate and the horizontal plane can be adjusted via the photovoltaic panel angle adjustment components.

5. The zero-energy temporary facility photovoltaic-storage-DC-flexible system for construction sites as described in claim 4, characterized in that, The photovoltaic support turntable system includes a support base, a rotary track, a connecting bracket, a motor base, a rotary drive motor system, a motor turntable, a flange, and rotary rollers. The support base is located on top of the temporary facility. The rotary track and the connecting bracket are fixedly mounted on the support base. The connecting bracket is located at the center of the rotary track. The motor base is located on top of the connecting bracket. The rotary drive motor system is located on the motor base. The motor turntable is located on the rotary drive motor system. The flange is fixedly connected to the motor turntable. The first support plate is located on top of the flange. The rotary rollers are fixedly connected to the lower part of the first support plate via connecting rods. When the rotary drive motor system drives the motor turntable to rotate, the rotary rollers can move on the rotary track.

6. The zero-energy temporary facility photovoltaic-storage-DC-flexible system for construction sites as described in claim 4, characterized in that, The photovoltaic panel angle adjustment component includes a mounting base, a hydraulic cylinder base, a hydraulic cylinder sleeve, a telescopic rod, a lower terminal, a ball joint connector, and an upper terminal. The mounting base is fixedly mounted on a first support plate, the hydraulic cylinder base is mounted on the mounting base, the hydraulic cylinder sleeve is mounted on the hydraulic cylinder base, the lower end of the telescopic rod is located inside the hydraulic cylinder sleeve, and the upper end of the telescopic rod is connected to the lower terminal. A ball joint connector is provided between the lower terminal and the upper terminal, and the upper terminal is fixedly mounted on the lower surface of the second support plate. The telescopic rods can extend and retract relative to their respective hydraulic cylinder sleeves. The extension and retraction of each telescopic rod can drive the corresponding upper terminal to move up and down, thereby adjusting the angle between the second support plate and the horizontal plane.

7. The zero-energy temporary facility photovoltaic-storage-DC-flexible system for construction sites as described in claim 4, characterized in that, The solar power generation and thermal cooling unit device includes a top photovoltaic unit, which is disposed on the second support plate and is parallel to the second support plate.

8. The zero-energy temporary facility photovoltaic-storage-DC-flexible system for construction sites as described in claim 7, characterized in that, The solar power generation and thermal cooling unit device further includes a forward-extending photovoltaic unit and a reverse-extending photovoltaic unit. The forward-extending photovoltaic unit and the reverse-extending photovoltaic unit are respectively mounted on the second support plate through a pair of sliding modules. The forward-extending photovoltaic unit and the reverse-extending photovoltaic unit are parallel to the second support plate. The sliding module for mounting the forward-extending photovoltaic unit is fixedly disposed on the lower surface of the second support plate, and the sliding module for mounting the reverse-extending photovoltaic unit is fixedly disposed on the upper surface of the second support plate. The sliding module includes a drive motor, a guide rail, and a slider. The drive motor can drive the slider to move along the guide rail. The slider is fixedly connected to the forward-extending photovoltaic unit or the reverse-extending photovoltaic unit through a corresponding mounting bracket.

9. The zero-energy temporary facility photovoltaic-storage-DC-flexible system for construction sites as described in claim 1, characterized in that, The photovoltaic module panel includes a glass cover plate, a first EVA encapsulation film, a solar cell, a second EVA encapsulation film, and a TPT board laid out in sequence. The TPT board is connected to the micro heat pipe array heat transfer plate through a first thermally conductive silicone layer.

10. The zero-energy temporary facility photovoltaic-storage-DC-flexible system for construction sites as described in claim 1, characterized in that, The temporary housing phase change thermal and cold storage enclosure structure includes phase change thermal and cold storage walls, a phase change thermal and cold storage floor, and a phase change thermal and cold storage roof. The phase change thermal and cold storage walls consist of, from the outside to the inside, a 50mm color steel rock wool sandwich panel, a 20mm vacuum insulation panel, a 30mm shaped phase change material layer, and a 0.4mm color steel plate. The phase change thermal and cold storage floor consists of, from bottom to top, a 0.4mm color steel plate, a 50mm rock wool board, a 20mm vacuum insulation board, and a 30mm shaped phase change material layer. The phase change thermal and cold storage roof plate consists of a 0mm shaped phase change material layer, a 15mm magnesium oxide fireproof board, and a 2mm PVC floor mat; the phase change thermal and cold storage roof plate includes, from top to bottom, a 0.4mm color steel plate, a 50mm rock wool board, a 20mm vacuum insulation board, a 30mm shaped phase change material layer, and a 0.4mm color steel plate; the 30mm shaped phase change material layer is embedded with a PP-R capillary grid, the capillary grid has a specification of 4.3×0.8mm, and the capillary spacing is 30mm.

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