CN116734503A - Industrial cold-hot combined preparation system utilizing solar PVT heat pump - Google Patents
Industrial cold-hot combined preparation system utilizing solar PVT heat pump Download PDFInfo
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- CN116734503A CN116734503A CN202310994587.1A CN202310994587A CN116734503A CN 116734503 A CN116734503 A CN 116734503A CN 202310994587 A CN202310994587 A CN 202310994587A CN 116734503 A CN116734503 A CN 116734503A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 362
- 238000004519 manufacturing process Methods 0.000 claims abstract description 43
- 238000005338 heat storage Methods 0.000 claims abstract description 40
- 239000002918 waste heat Substances 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 23
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000005057 refrigeration Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000000422 nocturnal effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
- F25B27/005—Machines, plants or systems, using particular sources of energy using solar energy in compression type systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The application discloses an industrial cold and hot combined preparation system utilizing a solar PVT heat pump, and relates to the technical field of solar photovoltaic photo-thermal synthesis. The system comprises a cold-hot combined preparation heat pump, a PVT heat pump, a peak heater, a direct current/alternating current controller, a refrigerator, a PVT component and a heat storage water tank; the first condenser is sequentially communicated with the second condenser and the peak heater through a hot water pipeline; the first evaporator is communicated with the refrigerator through a cold water pipeline; the second evaporator is respectively communicated with the PVT assembly, the outlet of the heat storage water tank and the inlet of the heat storage water tank; the direct current/alternating current controller is connected with the PVT assembly, the municipal power grid, the cold and hot combined preparation heat pump and the PVT heat pump; the refrigerator is connected with the municipal power grid. The application utilizes PVT heat pump technology, cold and hot combined preparation technology and heat storage technology to construct multi-heat source cascade heating and cascade refrigeration flow, realizes co-production combined supply and simultaneous supply of heat and cold, and reduces the system operation cost.
Description
Technical Field
The application relates to the technical field of solar photovoltaic photo-thermal comprehensive utilization, in particular to an industrial cold and hot combined preparation system utilizing a solar PVT heat pump.
Background
Solar PVT technology has become an important zero-carbon renewable energy source mode, however, because the annual load characteristic of a building is inconsistent with the daily and seasonal change rules of solar energy, the solar PVT solves the problem of low matching degree of cold, hot and electric consumption in the aspect of building energy, and has poor economic benefit.
Meanwhile, the process industry mainly comprising petrochemical industry and rectification and the non-process industry mainly comprising food and pharmacy generally have stable heat and cold consumption requirements all year round, and the process needs to consume a large amount of electric power and fossil energy, but is limited by the single-product thinking of cold and heat sources, the energy correlation between industrial heat and cold is not utilized, and the production process is characterized in that the cold and heat source systems are independent, so that the system operation cost is high, and the energy and carbon saving difficulty is high.
Therefore, it is needed to apply the solar PVT technology to the industrial field and construct a combined cold and heat preparation system, so as to provide an important way for the efficient and low-cost utilization of solar energy and zero carbonization of an industrial energy system.
Disclosure of Invention
The embodiment of the application provides an industrial cold and hot combined preparation system utilizing a solar PVT heat pump, which is constructed by organically combining a solar PVT heat pump technology and a cold and hot combined preparation technology, so that the high efficiency and low cost of solar energy are realized, and the energy efficiency of an industrial energy system for industrial production is obviously improved.
In order to achieve the above purpose, the embodiment of the application provides an industrial cold and hot combined preparation system utilizing a solar PVT heat pump, which comprises a cold and hot combined preparation heat pump, a PVT heat pump, a peak heater, a direct current/alternating current controller, a refrigerator, a PVT component and a heat storage water tank; the condenser water side inlet of the cold-hot combined preparation heat pump is communicated with the outlet of the hot water pipeline for industrial process, and the condenser water side outlet of the cold-hot combined preparation heat pump is communicated with the condenser water side inlet of the PVT heat pump; the condenser water side outlet of the PVT heat pump is communicated with the water inlet of the peak heater; the water outlet of the peak heater is communicated with the inlet of the hot water pipeline for the industrial process; the steam side inlet of the peak heater is communicated with a steam source; the water side inlet of the evaporator of the cold-hot combined preparation heat pump is communicated with the outlet of the cold water pipeline for industrial process, and the water side outlet of the evaporator of the cold-hot combined preparation heat pump is communicated with the inlet of the refrigerator; the outlet of the refrigerator is communicated with the inlet of the cold water pipeline for industrial process; the evaporator water side outlet of the PVT heat pump is respectively communicated with the water side inlet of the PVT assembly and the first water gap of the heat storage water tank; the evaporator water side inlet of the PVT heat pump is respectively communicated with the water side outlet of the PVT assembly, the first water gap of the heat storage water tank and the second water gap of the heat storage water tank; the direct current/alternating current controller is connected with the PVT assembly, the municipal power grid, the power inlet of the cold and hot combined preparation heat pump and the power inlet of the PVT heat pump; the refrigerator is connected with the municipal power grid.
Further, the cold-hot combined preparation heat pump comprises a first condenser, a first direct-drive/alternating-current dual-purpose compressor, a first evaporator and a first electronic expansion valve which are sequentially connected in series; the condenser water side inlet of the cold-hot combined preparation heat pump and the condenser water side outlet of the cold-hot combined preparation heat pump are both positioned on the first condenser; the evaporator water side inlet of the cold-hot combined preparation heat pump and the evaporator water side outlet of the cold-hot combined preparation heat pump are both positioned on the first evaporator; and an electric power inlet of the cold-hot combined preparation heat pump is positioned on the first direct-drive/alternating-current dual-purpose compressor.
Further, the PVT heat pump comprises a second condenser, a second direct-drive/alternating-current dual-purpose compressor, a second evaporator and a second electronic expansion valve which are sequentially connected in series; the condenser water side inlet of the PVT heat pump and the condenser water side outlet of the PVT heat pump are both positioned on the second condenser; the evaporator water side inlet of the PVT heat pump and the evaporator water side outlet of the PVT heat pump are both positioned on the second evaporator; the power inlet of the PVT heat pump is positioned on the second direct drive/alternating current dual-purpose compressor.
Further, the industrial cold and hot combined preparation system utilizing the solar PVT heat pump further comprises a preheater; the hot water side inlet of the preheater is communicated with the hot water pipeline for the industrial process, the hot water side outlet of the preheater is communicated with the first condenser, and the waste heat water inlet of the preheater and the waste heat water outlet of the preheater are both communicated with a waste heat source.
Further, the waste heat water inlet of the preheater is communicated with the waste heat source through a first waste heat water pipeline; the waste heat water outlet of the preheater is communicated with the waste heat source through a second waste heat water pipeline; and the second waste heat water pipeline is provided with a waste heat water circulating water pump.
Further, the industrial cold and hot combined preparation system utilizing the solar PVT heat pump further comprises a precooler and a cooling tower; the cold water side inlet of the precooler is communicated with a cold water pipeline for industrial process, the cold water side outlet of the precooler is communicated with the first evaporator, the circulating water side outlet of the precooler is communicated with the inlet of a cooling tower, and the outlet of the cooling tower is communicated with the circulating water side inlet of the precooler.
Further, the outlet of the circulating water side of the precooler is communicated with the inlet of the cooling tower through a first circulating water pipeline, and the outlet of the cooling tower is communicated with the inlet of the circulating water side of the precooler through a second circulating water pipeline; and a cooling tower circulating water pump is arranged on the second circulating water pipeline.
Further, the preheater is connected with the hot water pipeline for the industrial process through a first hot water pipeline; a hot water circulating water pump is arranged on the first hot water pipeline; the preheater is connected with the first condenser through a second hot water pipeline; the first condenser is connected with the second condenser through a third hot water pipeline; the second condenser is connected with the peak heater through a fourth hot water pipeline; the peak heater is connected with the hot water pipeline for the industrial process through a fifth hot water pipeline; the precooler is connected with the cold water pipeline for the industrial process through a first cold water pipeline; a cold water circulating water pump is arranged on the first cold water pipeline; the precooler is connected with the first evaporator through a second cold water pipeline; the first evaporator is connected with the refrigerator through a third cold water pipeline.
Further, a water side outlet of the second evaporator is connected with a first end of a first solar circulating water pipeline; the second end of the first solar circulating water pipeline is respectively connected with the first end of the second solar circulating water pipeline and the first end of the third solar circulating water pipeline; the second end of the second solar circulating water pipeline is connected with a water side inlet of the PVT assembly; the second solar circulating water pipeline is provided with a first valve; the second end of the third solar circulating water pipeline is connected with a first water gap of the heat storage water tank; a second valve is arranged on the third solar circulating water pipeline; the water side inlet of the second evaporator is respectively connected with the first end of the fourth solar circulating water pipeline and the first end of the fifth solar circulating water pipeline; the second end of the fourth solar circulating water pipeline is respectively connected with the first end of the sixth solar circulating water pipeline and the first end of the seventh solar circulating water pipeline; the second end of the sixth solar circulating water pipeline is connected with a water side outlet of the PVT component; a third valve is arranged on the sixth solar circulating water pipeline; the second end of the seventh solar circulating water pipeline is connected with a second water port of the heat storage water tank; a fourth valve is arranged on the seventh solar circulating water pipeline; the second end of the fifth solar circulating water pipeline is connected with a first water port of the heat storage water tank; the fifth solar energy circulating water pipeline is provided with a one-way valve and a fifth valve.
Further, a direct current inlet of the direct current/alternating current controller is connected with a power outlet of the PVT component through a first circuit, an alternating current inlet of the direct current/alternating current controller is connected with a municipal power grid through a second circuit, a power first outlet of the direct current/alternating current controller is connected with a power inlet of the combined heat and cold preparation heat pump through a third circuit, and a power second outlet of the direct current/alternating current controller is connected with a power inlet of the PVT heat pump through a fourth circuit; the electric power inlet of the refrigerator is connected with a municipal power grid through a fifth circuit.
Compared with the prior art, the application has the following beneficial effects:
1. according to the embodiment of the application, the industrial cold-hot combined preparation system utilizing the solar PVT heat pump constructs a cold-hot combined preparation process by combining the cold-hot combined preparation heat pump and the PVT heat pump, so that heat and cold required by the industrial process can be supplied simultaneously when the system operates.
2. According to the embodiment of the application, an industrial cold-hot combined preparation system utilizing a solar PVT heat pump constructs a step heating process through a preheater, a first condenser, a second condenser and a peak heater which are sequentially arranged; the step refrigeration flow is constructed by sequentially arranging the precooler, the first evaporator and the second evaporator, so that the temperature can be supplied to the mouth as required, and the comprehensive energy efficiency of the system is improved.
3. According to the industrial cold and hot combined preparation system utilizing the solar PVT heat pump, through the arrangement of the PVT component and the heat storage water tank which are connected with the second evaporator, the purpose that solar heat is stored in the heat storage water tank for the PVT heat pump to use at night in daytime is achieved, and the solar comprehensive utilization rate of the system and the operation energy efficiency of the PVT heat pump are improved.
4. According to the embodiment of the application, the industrial cold and hot combined preparation system utilizing the solar PVT heat pump realizes direct current/alternating current drive switching of the heat pump by arranging the direct current/alternating current controller and adopting the first direct current/alternating current compressor and the second direct current/alternating current compressor, so that solar photovoltaic power generation can be spontaneously utilized and consumed in situ, the system can continue to operate at night, and the whole day supply of heat and cold is realized.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an industrial combined cold and heat production system utilizing a solar PVT heat pump of the present application;
FIG. 2 is a flow chart of the industrial cold-hot combined preparation system utilizing the solar PVT heat pump in the daytime heat storage mode;
fig. 3 is a flow chart of an industrial cold and hot combined preparation system using a solar PVT heat pump in a night heat release mode according to the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Referring to fig. 1, the embodiment of the application provides an industrial cold and hot combined preparation system using a solar PVT heat pump, which utilizes PVT heat pump technology, cold and hot combined preparation technology and heat storage technology to construct multi-heat source cascade heating and cascade refrigeration processes, improves the operation energy efficiency of the system, realizes joint supply and simultaneous supply of heat and cold, reduces the operation cost of the system, can store solar light and heat in daytime into a heat storage water tank for night use, improves the comprehensive utilization rate of solar energy of the system, realizes continuous operation of the system throughout the day by switching a light Fu Zhi drive and a municipal power grid, meets the full-working-condition cold and hot load of an industrial production process, and improves the matching degree of an energy supply side and a demand side.
The industrial cold and hot combined preparation system utilizing the solar PVT heat pump provided by the embodiment of the application comprises a preheater 1, a cold and hot combined preparation heat pump 2, a PVT heat pump 3, a peak heater 4, a direct current/alternating current controller 5, a cooling tower 6, a precooler 7, a refrigerator 8, a PVT assembly 9 and a heat storage water tank 10. The cold-hot combined preparation heat pump 2 and the PVT heat pump 3 are electric compression heat pumps.
Five ports are arranged on the cold-hot combined preparation heat pump 2, and are respectively a condenser water side inlet of the cold-hot combined preparation heat pump, a condenser water side outlet of the cold-hot combined preparation heat pump, an evaporator water side inlet of the cold-hot combined preparation heat pump, an evaporator water side outlet of the cold-hot combined preparation heat pump and an electric power inlet of the cold-hot combined preparation heat pump. The combined heat and cold production heat pump comprises a first condenser 2a, a first direct-drive/alternating-current dual-purpose compressor 2b, a first evaporator 2c and a first electronic expansion valve 2d which are sequentially connected in series. It should be noted that, the water side inlet of the condenser of the heat pump for cold and hot combined preparation is the water side inlet of the first condenser 2a, the water side outlet of the condenser of the heat pump for cold and hot combined preparation is the water side outlet of the first condenser 2a, the water side inlet of the evaporator of the heat pump for cold and hot combined preparation is the water side inlet of the first evaporator 2c, the water side outlet of the evaporator of the heat pump for cold and hot combined preparation is the water side outlet of the first evaporator 2c, and the power inlet of the heat pump for cold and hot combined preparation is the power inlet of the first direct-drive/alternating-current dual-purpose compressor 2 b.
Similarly, five ports are also provided on the PVT heat pump 3, namely a condenser water side inlet of the PVT heat pump, a condenser water side outlet of the PVT heat pump, an evaporator water side inlet of the PVT heat pump, an evaporator water side outlet of the PVT heat pump, and an electric power inlet of the PVT heat pump. The PVT heat pump 3 includes a second condenser 3a, a second direct-drive/alternating-current dual-purpose compressor 3b, a second evaporator 3c, and a second electronic expansion valve 3d, which are sequentially connected in series. It should be noted that, the condenser water side inlet of the PVT heat pump is the water side inlet of the second condenser 3a, the condenser water side outlet of the PVT heat pump is the water side outlet of the second condenser 3a, the evaporator water side inlet of the PVT heat pump is the water side inlet of the second evaporator 3c, the evaporator water side outlet of the PVT heat pump is the water side outlet of the second evaporator 3c, and the power inlet of the PVT heat pump is the power inlet of the second direct drive/ac compressor 3 b.
With continued reference to fig. 1, the hot water side inlet of the preheater 1 is connected to the outlet of a hot water pipe (not shown) for industrial process through a first hot water pipe P11, and the first hot water pipe P11 is provided with a hot water circulating pump 11. The hot water side outlet of the preheater 1 is connected with the water side inlet of the first condenser 2a through the second hot water pipe P12, the water side outlet of the first condenser 2a is connected with the water side inlet of the second condenser 3a through the third hot water pipe P13, the water side outlet of the second condenser 3a is connected with the water inlet of the peak heater 4 through the fourth hot water pipe P14, and the water outlet of the peak heater 4 is connected with the inlet of the hot water pipe for industrial process through the fifth hot water pipe P15, thereby forming a hot water cycle. The steam side inlet of the spike heater 4 communicates with a steam source (not shown) through a steam conduit P16.
The waste heat water inlet of the preheater 1 communicates with a waste heat source (not shown) through a first waste heat water pipe P17. The waste heat water outlet of the preheater 1 is communicated with a waste heat source through a second waste heat water pipeline P18, and a waste heat water circulating water pump 12 is arranged on the second waste heat water pipeline P18. Thus, the waste heat of the waste heat source can be effectively utilized.
The cold water side inlet of the precooler 7 is connected with the outlet of a cold water pipeline (not shown in the figure) for industrial process through a first cold water pipeline P21, and a cold water circulating water pump 13 is arranged on the first cold water pipeline P21. The cold water side outlet of the precooler 7 is connected with the water side inlet of the first evaporator 2c through a second cold water pipe P22, the water side outlet of the first evaporator 2c is connected with the inlet of the refrigerator 8 through a third cold water pipe P23, and the outlet of the refrigerator 8 is connected with the inlet of the cold water pipe for industrial process through a fourth cold water pipe P24, thereby forming a cold water cycle.
The outlet of the circulating water side of the precooler 7 is communicated with the inlet of the cooling tower 6 through a first circulating water pipeline P25, and the outlet of the cooling tower 6 is communicated with the inlet of the circulating water side of the precooler 7 through a second circulating water pipeline P26; the second circulating water pipe P26 is provided with a cooling tower circulating water pump 14.
The water side outlet of the second evaporator 3c is connected to the first end of the first solar circulating water pipe P31, and the second end of the first solar circulating water pipe P31 is connected to the first end of the second solar circulating water pipe P32 and the first end of the third solar circulating water pipe P33, respectively. The first solar circulating water pipe P31 is provided with a solar circulating water pump 15. The second end of the second solar water circulating pipeline P32 is connected with a water side inlet of the PVT assembly 9, and the second solar water circulating pipeline P32 is provided with a first valve K1. The second end of the third solar circulating water pipeline P33 is connected with the first water gap of the heat storage water tank 10, and the second valve K2 is arranged on the third solar circulating water pipeline P33.
The water side inlet of the second evaporator 3c is connected to the first end of the fourth solar circulating water pipe P34 and the first end of the fifth solar circulating water pipe P35, respectively, and the second end of the fourth solar circulating water pipe P34 is connected to the first end of the sixth solar circulating water pipe P36 and the first end of the seventh solar circulating water pipe P37, respectively. The second end of the sixth solar water circulation pipeline P36 is connected with the water side outlet of the PVT assembly 9, and the third valve K3 is arranged on the sixth solar water circulation pipeline P36. The second end of the seventh solar circulating water pipeline P37 is connected with the second water gap of the heat storage water tank 10, and the fourth valve K4 is arranged on the seventh solar circulating water pipeline P37. The second end of the fifth solar circulating water pipeline P35 is connected with the first water gap of the heat storage water tank 10, and a fifth valve K5 and a one-way valve K6 are arranged on the fifth solar circulating water pipeline P35. It should be noted that: the first and second water ports of the thermal storage tank 10 may be either water inlets or water outlets.
The dc inlet of the dc/ac controller 5 is connected to the power outlet of the PVT assembly 9 through the first circuit W1, the ac inlet of the dc/ac controller 5 is connected to a municipal power grid (not shown in the figure) through the second circuit W2, the power first outlet of the dc/ac controller 5 is connected to the power inlet of the first dual-purpose dc/ac compressor 2b through the third circuit W3, and the power second outlet of the dc/ac controller 5 is connected to the power inlet of the second dual-purpose dc/ac compressor 3b through the fourth circuit W4. The power inlet of the refrigerator 8 is connected to the municipal power grid through a fifth circuit W5.
The working principle of the embodiment of the application is as follows:
referring to fig. 2, when an embodiment of the present application is operated in the daytime thermal storage mode:
the direct current/alternating current controller 5 is switched to a direct current mode, the first direct current/alternating current dual-purpose compressor 2b and the second direct current/alternating current dual-purpose compressor 3b are switched to a direct current mode, the first valve K1, the third valve K3, the fourth valve K4, the fifth valve K5, the hot water circulating pump 11, the waste heat water circulating pump 12, the cold water circulating pump 13, the cooling tower circulating pump 14 and the solar circulating pump 15 are opened, and the second valve K2 is closed.
The power supply process comprises the following steps: the PTV assembly generates power under solar irradiation and supplies dc power to the first and second direct/alternating current compressors 2b and 3 b.
The hot water temperature rising process for the industrial process comprises the following steps: the industrial process hot water is gradually heated by passing through the preheater 1, the first condenser 2a, the second condenser 3a and the peak heater 4 in sequence.
The industrial process uses cold water to cool down: the industrial process cold backwater sequentially passes through the precooler 7, the first evaporator 2c and the refrigerator 8, so that the industrial process cold water is gradually cooled.
PVT circulation and heat accumulation process: the solar circulating water heated and warmed in the PVT assembly 9 is divided into two paths, wherein one path enters the second evaporator 3c through the sixth solar circulating water pipeline P36 and the fourth solar circulating water pipeline P34 to be cooled, and then returns to the PVT assembly 9 through the first solar circulating water pipeline P31 and the second solar circulating water pipeline P32 to complete circulation. The other path of the solar energy circulating water enters the heat storage water tank 10 through a sixth solar energy circulating water pipeline P36 and a seventh solar energy circulating water pipeline P37 to gradually replace water stored in the heat storage water tank 10 after the heat storage water tank 10 is filled with solar energy circulating water after temperature rise to complete a heat storage process, and the discharged water of the heat storage water tank 10 returns to the PVT assembly 9 through the fifth solar energy circulating water pipeline P35, the second evaporator 3c, the first solar energy circulating water pipeline P31 and the second solar energy circulating water pipeline P32 in sequence to complete circulation.
Cooling tower-precooler cycle: the circulating water of the cooling tower enters a precooler 7 to absorb the heat of cold backwater for industrial process to heat up, and then enters a cooling tower 6 to cool down.
Industrial waste heat water circulation process: the waste heat water from the waste heat source is utilized to heat the industrial process hot water through the preheater 1, and the waste heat water is returned to the waste heat source after being cooled.
Referring to fig. 3, when an embodiment of the present application is operated in the nocturnal exothermic mode:
the direct current/alternating current controller 5 is switched to an alternating current mode, the first direct current/alternating current dual-purpose compressor 2b and the second direct current/alternating current dual-purpose compressor 3b are switched to a direct current mode, and the second valve K2, the fourth valve K4, the hot water circulating pump 11, the waste heat water circulating pump 12, the cold water circulating pump 13, the cooling tower circulating pump 14, the solar circulating pump 15, the first valve K1, the third valve K3 and the fifth valve K5 are opened.
The power supply process comprises the following steps: the municipal power grid supplies alternating current to the first direct drive/alternating current dual-purpose compressor 2b and the second direct drive/alternating current dual-purpose compressor 3 b.
The hot water heating process for the industrial process, the cold water cooling process for the industrial process, the cooling tower-precooler circulation process and the industrial waste heat circulation process are the same as those in the embodiment of the application in the daytime heat storage mode, and are not described in detail herein.
The heat storage tank 10 releases heat: the solar circulating water from the second evaporator 3c sequentially enters the heat storage water tank 10 through the first solar circulating water pipe P31 and the third solar circulating water pipe P33, and gradually replaces the stored water in the heat storage water tank 10 after passing through the daytime heat storage mode. The heat storage water tank 10 is filled with cooled solar circulating water to complete the heat release process, and the outlet water of the heat storage water tank 10 enters the second evaporator 3c through the seventh solar circulating water pipeline P37 and the fourth solar circulating water pipeline P34 to be cooled, and then returns to the heat storage water tank 10 through the first solar circulating water pipeline P31 and the third solar circulating water pipeline P33 to complete the circulation.
The present application is not limited to the above embodiments, and any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (10)
1. An industrial cold-hot combined preparation system utilizing a solar PVT heat pump is characterized in that,
the system comprises a cold and hot combined preparation heat pump, a PVT heat pump, a peak heater, a direct current/alternating current controller, a refrigerator, a PVT component and a heat storage water tank;
the condenser water side inlet of the cold-hot combined preparation heat pump is communicated with the outlet of the hot water pipeline for industrial process, and the condenser water side outlet of the cold-hot combined preparation heat pump is communicated with the condenser water side inlet of the PVT heat pump; the condenser water side outlet of the PVT heat pump is communicated with the water inlet of the peak heater; the water outlet of the peak heater is communicated with the inlet of the hot water pipeline for the industrial process; the steam side inlet of the peak heater is communicated with a steam source;
the water side inlet of the evaporator of the cold-hot combined preparation heat pump is communicated with the outlet of the cold water pipeline for industrial process, and the water side outlet of the evaporator of the cold-hot combined preparation heat pump is communicated with the inlet of the refrigerator; the outlet of the refrigerator is communicated with the inlet of the cold water pipeline for industrial process;
the evaporator water side outlet of the PVT heat pump is respectively communicated with the water side inlet of the PVT assembly and the first water gap of the heat storage water tank; the evaporator water side inlet of the PVT heat pump is respectively communicated with the water side outlet of the PVT assembly, the first water gap of the heat storage water tank and the second water gap of the heat storage water tank;
the direct current/alternating current controller is connected with the PVT assembly, the municipal power grid, the power inlet of the cold and hot combined preparation heat pump and the power inlet of the PVT heat pump; the refrigerator is connected with the municipal power grid.
2. The industrial combined cold and heat production system using a solar PVT heat pump according to claim 1, wherein the combined cold and heat production heat pump comprises a first condenser, a first direct drive/alternating current compressor, a first evaporator, and a first electronic expansion valve, which are sequentially connected in series; the condenser water side inlet of the cold-hot combined preparation heat pump and the condenser water side outlet of the cold-hot combined preparation heat pump are both positioned on the first condenser; the evaporator water side inlet of the cold-hot combined preparation heat pump and the evaporator water side outlet of the cold-hot combined preparation heat pump are both positioned on the first evaporator; and an electric power inlet of the cold-hot combined preparation heat pump is positioned on the first direct-drive/alternating-current dual-purpose compressor.
3. The industrial combined cold and heat production system using a solar PVT heat pump according to claim 2, wherein the PVT heat pump comprises a second condenser, a second direct drive/alternating current dual-purpose compressor, a second evaporator, and a second electronic expansion valve, which are sequentially connected in series; the condenser water side inlet of the PVT heat pump and the condenser water side outlet of the PVT heat pump are both positioned on the second condenser; the evaporator water side inlet of the PVT heat pump and the evaporator water side outlet of the PVT heat pump are both positioned on the second evaporator; the power inlet of the PVT heat pump is positioned on the second direct drive/alternating current dual-purpose compressor.
4. The industrial combined cold and heat production system using a solar PVT heat pump according to claim 3, further comprising a preheater; the hot water side inlet of the preheater is communicated with the hot water pipeline for the industrial process, the hot water side outlet of the preheater is communicated with the first condenser, and the waste heat water inlet of the preheater and the waste heat water outlet of the preheater are both communicated with a waste heat source.
5. The industrial combined cold and hot preparation system using a solar PVT heat pump according to claim 4, wherein the waste heat water inlet of the preheater is communicated with the waste heat source through a first waste heat water pipe; the waste heat water outlet of the preheater is communicated with the waste heat source through a second waste heat water pipeline; and the second waste heat water pipeline is provided with a waste heat water circulating water pump.
6. The industrial combined cold and heat production system using a solar PVT heat pump according to claim 5, further comprising a precooler and a cooling tower; the cold water side inlet of the precooler is communicated with a cold water pipeline for industrial process, the cold water side outlet of the precooler is communicated with the first evaporator, the circulating water side outlet of the precooler is communicated with the inlet of a cooling tower, and the outlet of the cooling tower is communicated with the circulating water side inlet of the precooler.
7. The industrial combined cold and hot preparation system using a solar PVT heat pump according to claim 6, wherein a circulating water side outlet of the precooler is communicated with an inlet of the cooling tower through a first circulating water pipe, and an outlet of the cooling tower is communicated with a circulating water side inlet of the precooler through a second circulating water pipe; and a cooling tower circulating water pump is arranged on the second circulating water pipeline.
8. The industrial combined heat and cold producing system using a PVT heat pump according to claim 7, wherein,
the preheater is connected with the hot water pipeline for the industrial process through a first hot water pipeline; a hot water circulating water pump is arranged on the first hot water pipeline; the preheater is connected with the first condenser through a second hot water pipeline; the first condenser is connected with the second condenser through a third hot water pipeline; the second condenser is connected with the peak heater through a fourth hot water pipeline; the peak heater is connected with the hot water pipeline for the industrial process through a fifth hot water pipeline;
the precooler is connected with the cold water pipeline for the industrial process through a first cold water pipeline; a cold water circulating water pump is arranged on the first cold water pipeline; the precooler is connected with the first evaporator through a second cold water pipeline; the first evaporator is connected with the refrigerator through a third cold water pipeline.
9. The industrial combined heat and cold producing system using a PVT heat pump according to claim 8, wherein,
the water side outlet of the second evaporator is connected with the first end of the first solar circulating water pipeline; the second end of the first solar circulating water pipeline is respectively connected with the first end of the second solar circulating water pipeline and the first end of the third solar circulating water pipeline; the second end of the second solar circulating water pipeline is connected with a water side inlet of the PVT assembly; the second solar circulating water pipeline is provided with a first valve; the second end of the third solar circulating water pipeline is connected with a first water gap of the heat storage water tank; a second valve is arranged on the third solar circulating water pipeline;
the water side inlet of the second evaporator is respectively connected with the first end of the fourth solar circulating water pipeline and the first end of the fifth solar circulating water pipeline; the second end of the fourth solar circulating water pipeline is respectively connected with the first end of the sixth solar circulating water pipeline and the first end of the seventh solar circulating water pipeline; the second end of the sixth solar circulating water pipeline is connected with a water side outlet of the PVT component; a third valve is arranged on the sixth solar circulating water pipeline; the second end of the seventh solar circulating water pipeline is connected with a second water port of the heat storage water tank; a fourth valve is arranged on the seventh solar circulating water pipeline; the second end of the fifth solar circulating water pipeline is connected with a first water port of the heat storage water tank; the fifth solar energy circulating water pipeline is provided with a one-way valve and a fifth valve.
10. The industrial combined cold and hot production system using a solar PVT heat pump according to claim 9, wherein a direct current inlet of the direct current/alternating current controller is connected to a power outlet of the PVT assembly through a first circuit, an alternating current inlet of the direct current/alternating current controller is connected to a municipal power grid through a second circuit, a power first outlet of the direct current/alternating current controller is connected to a power inlet of the combined cold and hot production heat pump through a third circuit, and a power second outlet of the direct current/alternating current controller is connected to a power inlet of the PVT heat pump through a fourth circuit; the electric power inlet of the refrigerator is connected with a municipal power grid through a fifth circuit.
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