Photo-thermal heating and refrigerating system

Abstract

The invention relates to the technical field of photo-thermal utilization, and particularly discloses a photo-thermal heating and refrigerating system, in the photo-thermal heating and refrigerating system, a photo-thermal heat collection assembly of a heat collection mechanism is used for absorbing light energy and heating a heat-conducting medium flowing through a heat exchange piece; the heat exchange piece is used for transferring heat of a heat-conducting medium to water flowing through the heat exchange piece, and the heat storage water tank is used for storing heated water; the tail end mechanism comprises a cold and hot tail end and a refrigeration assembly, and the cold and hot tail end can conduct heating or refrigeration; a heat supply outlet of the heat storage water tank is communicated with a heat inlet of the cold and hot tail end, and a heat outlet of the cold and hot tail end is communicated with a heat supply inlet of the heat storage water tank; a heat source inlet of the refrigeration assembly communicates with a heat supply outlet of the heat storage water tank, and a heat source outlet of the refrigeration assembly communicates with a heat supply inlet of the heat storage water tank. A cold source outlet of the refrigeration assembly is communicated with a cold inlet of the cold and hot tail end, a cold source inlet of the refrigeration assembly is communicated with a cold outlet of the cold and hot tail end, and therefore heat and cold supply cost is lower, and heat and cold supply is cleaner and more flexible.

Description

Technical Field

[0001] The present invention relates to the technical field of photothermal utilization, and in particular to a photothermal heating and cooling system. Background Art

[0002] With the development of society, heat (cold) energy accounts for about 51% of the terminal energy consumption demand in the terminal energy consumption forms, which is mainly reflected in the fields of industrial hot water and hot steam, commercial building heating and cooling, domestic hot water, agricultural high-temperature steam sterilization, etc., which require a large amount of energy consumption.

[0003] The supply of traditional energy generally requires coal-fired and gas-fired boilers, which provide heating and cooling services, but also present a series of problems, such as high pollution, high energy consumption, and poor operational flexibility. At the same time, the operating costs are high, and the social and economic benefits are poor.

[0004] Therefore, it is urgent to study a solar thermal heating and cooling system to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a solar thermal heating and cooling system to solve the problems of high pollution, high energy consumption, poor operational flexibility and the like in the prior art, with low operating costs and better social and economic benefits.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The solar thermal heating and cooling system includes a heat collection mechanism and a terminal mechanism, wherein:

[0008] The heat collection mechanism includes a photothermal heat collection component, a heat exchanger and a hot water storage tank. The photothermal heat collection component is used to absorb light energy and heat the heat-conducting medium flowing through the heat exchanger; the heat exchanger is used to transfer the heat of the heat-conducting medium to the water flowing through it, and the hot water storage tank is used to store the heated water;

[0009] The terminal mechanism includes:

[0010] Hot and cold terminals, the hot and cold terminals can provide heating or cooling;

[0011] The heat supply outlet of the hot water storage tank is connected to the heat inlet of the hot and cold terminals, and the heat outlets of the hot and cold terminals are connected to the heat supply inlet of the hot water storage tank;

[0012] A refrigeration component, wherein the heat source inlet of the refrigeration component is connected to the heat supply outlet of the hot water storage tank, and the heat source outlet of the refrigeration component is connected to the heat supply inlet of the hot water storage tank; the cold source outlet of the refrigeration component is connected to the cold inlet of the hot and cold ends, and the cold source inlet of the refrigeration component is connected to the cold outlet of the hot and cold ends, wherein a valve body is provided between any two interfaces to control the on-off.

[0013] As an optional technical solution for a photothermal heating and cooling system, the terminal mechanism also includes an electric vacuum boiler, which is provided with a first electric heating element capable of heating water passing through the electric vacuum boiler. The inlet of the electric vacuum boiler is connected to the heating outlet of the hot water storage tank, and is provided with an electric first valve body. The outlet of the electric vacuum boiler is simultaneously connected to the heat inlet of the hot and cold terminals and the heat source inlet of the refrigeration component, and an electric second valve body is provided at the outlet of the electric vacuum boiler.

[0014] As an optional technical solution for a solar thermal heating and cooling system, the outlet of the electric vacuum boiler is connected to the heating inlet of the hot water storage tank, and an electric third valve body is provided at the outlet of the electric vacuum boiler.

[0015] As an optional technical solution of a solar thermal heating and cooling system, the solar thermal collector assembly includes a support frame, a reflector and a vacuum heat collecting tube arranged on the support frame, and the reflector is used to reflect light energy to the vacuum heat collecting tube to heat the heat conducting medium inside the vacuum heat collecting tube;

[0016] The outlet of the vacuum heat collecting tube is connected to the medium inlet of the heat exchange element, the medium outlet of the heat exchange element is connected to the inlet of the vacuum heat collecting tube, and an oil pump is provided on the connecting pipeline between the heat exchange element and the vacuum heat collecting tube to drive the heat-conducting medium to circulate between the heat exchange element and the vacuum heat collecting tube.

[0017] As an optional technical solution for a solar thermal heating and cooling system, the solar thermal collector assembly also includes an oil storage component, which is connected in series between the heat exchange component and the vacuum collector tube, and the oil pump is arranged between the oil storage component and the vacuum collector tube.

[0018] As an optional technical solution for a solar thermal heating and cooling system, the heat collection mechanism further includes a solid heat storage component, which is used to absorb and store heat from a heat-conducting medium flowing through the solid heat storage component;

[0019] The fluid inlet of the solid heat storage component is connected to the outlet of the vacuum heat collecting tube, and a solid first valve body is arranged at the fluid inlet of the solid heat storage component; the fluid outlet of the solid heat storage component is connected to the medium outlet of the heat exchange component, and a solid second valve body is arranged at the fluid outlet of the solid heat storage component.

[0020] As an optional technical solution for a solar thermal heating and cooling system, the fluid outlet of the solid heat storage element is connected to the inlet of the vacuum heat collecting tube.

[0021] As an optional technical solution for a solar thermal heating and cooling system, a second electric heating element is provided inside the solid heat storage element, and the second electric heating element can heat the heat storage solid inside the solid heat storage element and the heat conductive medium flowing through the solid heat storage element.

[0022] As an optional technical solution for a solar thermal heating and cooling system, the reflector is fixedly connected to the vacuum collector tube connecting rod, the reflector is rotatably arranged on the support frame via a rotating shaft, and can be deflected around the axis of the rotating shaft to adapt to the angle of light, the solar thermal collector assembly also includes a hydraulic motor arranged on the support frame, the output end of the hydraulic motor is drivingly connected to the rotating shaft, the oil pump is connected to the hydraulic motor, and can drive the hydraulic motor forward and reverse to drive the reflector to deflect.

[0023] As an optional technical solution for a solar thermal heating and cooling system, the heat storage inlet of the heat storage tank is connected to the water outlet of the heat exchange element, the heat storage outlet of the heat storage tank is connected to the water inlet of the heat exchange element, and a hot water pump and a heat valve body are provided between the two.

[0024] The beneficial effects of the present invention are:

[0025] The present invention provides a photothermal heating and cooling system, which converts light energy into heat energy through a photothermal heat collection mechanism, and stores it in a hot water storage tank in the form of hot water. When in use, the hot water in the hot water storage tank can be used to directly provide heat to the hot and cold terminals so that they can heat, or the heat in the hot water can be used for cooling by a refrigeration component, thereby providing water with a lower temperature to the hot and cold terminals to reduce their temperature, and cooling the environment where the hot and cold terminals are installed. Among them, photothermal is a low-energy green energy product. Compared with the conversion of light into electricity and then into heat, the photothermal efficiency is high, and the investment and operating costs are low, so that the cost of photothermal heating and cooling will be greatly reduced. Compared with electric boilers and gas boilers, the cost of use is lower and cleaner, which can bring higher economy to users. Each device is operated in a centralized manner, without the need for scheduling, and has good operating flexibility. In the long run, solar energy is expected to play a huge role in energy conservation and emission reduction in the fields of industrial, agricultural and building heating and cooling, and can bring huge social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a solar thermal heating and cooling system in an embodiment of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a heat collection mechanism in an embodiment of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the terminal mechanism in an embodiment of the present invention;

[0029] Figure 4 Schematic diagram of the connection of the hydraulic motor in the embodiment of the present invention.

[0030] In the figure:

[0031] 1000. Heat collection mechanism;

[0032] 1100, solar thermal collector assembly; 1110, support frame; 1120, reflector; 1130, vacuum collector tube; 1140, hydraulic motor; 1200, heat exchange element; 1300, hot water storage tank; 1400, solid heat storage element;

[0033] 1500, high-position oil storage tank; 1600, low-position oil storage tank; 1700, oil-gas separator;

[0034] 110, medium outlet pipeline; 111, medium first valve body; 112, medium second valve body;

[0035] 120, medium first return pipeline; 121, medium third valve body;

[0036] 130. Second medium return pipeline; 131. Fourth medium valve body; 132. Oil pump;

[0037] 140. a solid first pipeline; 141. a solid first valve body;

[0038] 150, solid second pipeline; 151, solid second valve body; 152, solid third valve body;

[0039] 160, solid third pipeline; 161, solid fourth valve body;

[0040] 170, first heat extraction pipeline;

[0041] 180, second heat extraction pipeline; 181, hot water extraction pump; 182, heat extraction valve body;

[0042] 2000, terminal mechanism;

[0043] 2100, hot and cold terminals; 2200, refrigeration components; 2300, electric vacuum boiler;

[0044] 210, heating water outlet main pipeline; 211, heating first valve body; 212, heating second valve body; 213, heating water pump;

[0045] 220, heating water return main line; 221, heating third valve body; 222, heating fourth valve body;

[0046] 230, a first refrigeration pipeline; 231, a first refrigeration valve body;

[0047] 240, refrigeration second pipeline; 241, refrigeration second valve body;

[0048] 250, refrigeration third pipeline; 251, refrigeration third valve body; 252, cooling water pump;

[0049] 260, refrigeration fourth pipeline; 261, refrigeration fourth valve body;

[0050] 270, electric heating first pipeline; 271, electric heating first valve body;

[0051] 280, electric heating second pipeline; 281, electric heating second valve body;

[0052] 290, electric heating third pipeline; 291, electric heating third valve body;

[0053] 310, hydraulic first pipeline; 311, hydraulic first valve body; 312, hydraulic second valve body;

[0054] 320, hydraulic second pipeline; 321, hydraulic third valve body; 322, hydraulic fourth valve body;

[0055] 340, hydraulic inlet pipe; 350, hydraulic outlet pipe. DETAILED DESCRIPTION

[0056] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0058] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0060] like Figures 1 to 3 As shown, this embodiment provides a solar thermal heating and cooling system, which includes a heat collection mechanism 1000 and a terminal mechanism 2000, wherein the heat storage mechanism includes a solar thermal heat collection component 1100, a heat exchanger 1200 and a hot water storage tank 1300, the solar thermal heat collection component 1100 is used to absorb light energy and heat the heat-conducting medium flowing through the heat exchanger 1200; the heat exchanger 1200 is used to transfer the heat of the heat-conducting medium to the water flowing through itself, and the hot water storage tank 1300 is used to store the heated water; the terminal mechanism 2000 includes a hot and cold terminal 2100 and a refrigeration component 2200, wherein the hot and cold terminal 210 0 can heat or cool; the heating outlet of the hot water storage tank 1300 is connected to the hot inlet of the hot and cold terminal 2100, and the hot outlet of the hot and cold terminal 2100 is connected to the heating inlet of the hot water storage tank 1300; the heat source inlet of the refrigeration component 2200 is connected to the heating outlet of the hot water storage tank 1300, and the heat source outlet of the refrigeration component 2200 is connected to the heating inlet of the hot water storage tank 1300; the cold source outlet of the refrigeration component 2200 is connected to the cold inlet of the hot and cold terminal 2100, and the cold source inlet of the refrigeration component 2200 is connected to the cold outlet of the hot and cold terminal 2100, wherein a valve body is provided between any two interfaces to control the on-off.

[0061] In the above settings, since solar thermal is a low-energy green energy product, its efficiency is higher than the conversion of light into electricity and then into heat, and its investment and operating costs are low, which greatly reduces the cost of solar thermal heating and cooling. Compared with electric boilers and gas boilers, it is cheaper and cleaner to use, and can bring higher economic benefits to users. Each device is operated in a centralized manner, without the need for scheduling, and has better operational flexibility. In the long run, solar energy is expected to play a huge role in energy conservation and emission reduction in the fields of industrial and agricultural heating and cooling of buildings, and can bring huge social and economic benefits.

[0062] Among them, the heating outlet of the hot water storage tank 1300 and the hot inlet of the hot and cold terminals 2100 are connected through a heating water outlet main line 210, and the hot outlets of the hot and cold terminals 2100 and the heating inlet of the hot water storage tank 1300 are connected through a heating return water main line 220; a first heating valve body 211 is provided on the heating water outlet main line 210; and a fourth heating valve body 222 is provided on the heating return water main line 220.

[0063] In some embodiments, a heating first valve body 211 and a heating second valve body 212 are provided on the heating water outlet main line 210, and the heating first valve body 211 is closer to the hot water storage tank 1300; a heating third valve body 221 and a heating fourth valve body 222 are provided on the heating return water main line 220, and the heating fourth valve body 222 is closer to the hot water storage tank 1300; the heat source inlet of the refrigeration component 2200 and the heating water outlet main line 210 are connected through the refrigeration first pipeline 230, and the connection point between the refrigeration first pipeline 230 and the heating water outlet main line 210 is located between the heating first valve body 211 and the heating second valve body 212, and the refrigeration first pipeline 230 is provided with a refrigeration first valve body 231; the heat source outlet of the refrigeration component 2200 and the heating return water main line 220 The two cooling elements 2200 and 2200 are connected through a second cooling pipeline 240, and the connecting point between the second cooling pipeline 240 and the heating return water main pipeline 220 is located between the third heating valve body 221 and the fourth heating valve body 222, and the second cooling pipeline 240 is provided with a second cooling valve body 241; the cold source outlet of the refrigeration component 2200 and the cold inlet of the hot and cold terminal 2100 are connected through a third cooling pipeline 250, and the third cooling pipeline 250 is provided with a third cooling valve body 251; the cold source inlet of the refrigeration component 2200 and the cold outlet of the hot and cold terminal 2100 are connected through a fourth cooling pipeline 260, and the fourth cooling pipeline 260 is provided with a fourth cooling valve body 261; the hot water pump 213 is arranged on the heating water outlet main pipeline 210, and the cold water pump 252 is arranged on the third cooling pipeline 250.

[0064] When the heat storage is insufficient or the light fluctuation is large, in order to avoid the heat source being unstable and affecting the heating or cooling effect, in some embodiments, the terminal mechanism 2000 also includes an electric vacuum boiler 2300, and the electric vacuum boiler 2300 is provided with a first electric heating element that can heat the water passing through the electric vacuum boiler 2300. The inlet of the electric vacuum boiler 2300 is connected to the heat supply outlet of the hot water storage tank 1300, and is provided with an electric first valve body 271. The outlet of the electric vacuum boiler 2300 is simultaneously connected to the heat inlet of the cold and hot terminal 2100 and the heat source inlet of the refrigeration component 2200, and an electric second valve body 281 is provided at the outlet of the electric vacuum boiler 2300. This arrangement can heat the water to provide a stable heat source for the cold and hot terminal 2100 or the refrigeration component 2200. The refrigeration component 2200 can be a lithium bromide refrigeration unit. The specific structure and working principle of the lithium bromide refrigeration unit and the electric vacuum boiler 2300 are well known to those skilled in the art, so they are not repeated here.

[0065] In the valley electricity stage when heat is not used, in order to shift the peak and fill the valley and reduce costs, in some embodiments, the outlet of the electric vacuum boiler 2300 is connected to the heat supply inlet of the hot water storage tank 1300, and an electric third valve body 291 is provided at the outlet of the electric vacuum boiler 2300. The first electric heater is used to heat the hot water storage tank 1300 to complete heat storage. Among them, the first electric heater can be connected to clean energy such as photovoltaic, wind power and valley electricity. Thermal storage is more economical, stable and reliable than electrochemical energy storage, with high energy utilization, and can be charged and discharged at the same time.

[0066] Exemplarily, the hot water pump 213 is located between the first heating valve body 211 and the hot water storage tank 1300, the inlet of the electric vacuum boiler 2300 and the heating water outlet main line 210 are connected through the first electric pipeline 270, and the connection point between the first electric pipeline 270 and the heating water outlet main line 210 is located between the hot water pump 213 and the first heating valve body 211. The first electric valve body 271 is provided on the first electric pipeline 270.

[0067] The outlet of the electric vacuum boiler 2300 is connected to the heating water outlet main line 210 through the electric second pipeline 280. The connecting point between the heating water outlet main line 210 and the electric second pipeline 280 is located between the heating first valve body 211 and the heating second valve body 212. The electric second valve body 281 is arranged on the electric second pipeline 280.

[0068] The outlet of the electric vacuum boiler 2300 is connected to the heating return water main line 220 through the electric third pipeline 290. The connection point between the heating return water main line 220 and the electric third pipeline 290 is located between the hot water storage tank 1300 and the heating third valve body 221. The electric third valve body 291 is arranged on the electric third pipeline 290.

[0069] Combination Figure 2 As shown, the solar thermal collector assembly 1100 includes a support frame 1110, a reflector 1120 and a vacuum heat collecting tube 1130 arranged on the support frame 1110, the reflector 1120 is used to reflect light energy to the vacuum heat collecting tube 1130 to heat the heat conducting medium inside it; the outlet of the vacuum heat collecting tube 1130 is connected to the medium inlet of the heat exchanger 1200, the medium outlet of the heat exchanger 1200 is connected to the inlet of the vacuum heat collecting tube 1130, and an oil pump 132 is provided on the connecting pipeline between the heat exchanger 1200 and the vacuum heat collecting tube 1130 to drive the heat conducting medium to circulate between the heat exchanger 1200 and the vacuum heat collecting tube 1130. Among them, the reflector 1120 is a groove-shaped structure, which can linearly focus the light on the vacuum heat collecting tube 1130 to maximize the absorption of light energy.

[0070] In order to avoid damage to the pipeline caused by thermal expansion and contraction of the heat-conducting medium, in some embodiments, the solar thermal collector assembly 1100 also includes an oil storage component, which is connected in series between the heat exchange component 1200 and the vacuum heat collection tube 1130, and the oil pump 132 is arranged between the oil storage component and the entrance of the vacuum heat collection tube 1130. Among them, the oil storage component includes a low-level oil storage tank 1600 and a high-level oil storage tank 1500, wherein the low-level oil storage tank 1600 is located below the high-level oil storage tank 1500, and the two oil storage tanks are connected through two connecting pipes. The position where the oil pump 132 is set can pump the oil with lower temperature into the vacuum heat collection tube 1130, which is conducive to improving the service life of the oil pump 132. An oil-gas separator 1700 is provided on the connecting pipeline.

[0071] The heat storage inlet of the hot water storage tank 1300 is connected to the water outlet of the heat exchanger 1200, and the heat storage outlet of the hot water storage tank 1300 is connected to the water inlet of the heat exchanger 1200, and a hot water pump 181 is provided between the two.

[0072] When the sunshine resources are sufficient, in order to avoid heat waste, the heat can be stored. In some embodiments, the heat collection mechanism 1000 further includes a solid heat storage member 1400, which is used to absorb and store the heat in the heat-conducting medium flowing through it; the fluid inlet of the solid heat storage member 1400 is connected to the outlet of the vacuum heat collecting tube 1130, and a solid first valve body 141 is provided at the fluid inlet of the solid heat storage member 1400; the fluid outlet of the solid heat storage member 1400 is connected to the medium outlet of the heat exchange member 1200, and a solid second valve body 151 is provided at the fluid outlet of the solid heat storage member 1400. The above arrangement allows the heat-conducting medium with a higher temperature to absorb part of the heat after flowing through the solid heat storage member 1400, and the heat-conducting medium with a lower temperature flows out from the fluid outlet to merge with the heat-conducting medium flowing out from the medium outlet of the heat exchange member 1200 and finally enters the vacuum heat collecting tube 1130 again through the inlet of the vacuum heat collecting tube 1130.

[0073] The fluid outlet of the solid heat storage element 1400 is connected to the inlet of the vacuum heat collecting tube 1130, so that the heat of the solid heat storage element 1400 can be released at night or when there is insufficient light.

[0074] Furthermore, in order to achieve peak shaving and valley filling, a second electric heating element is provided inside the solid heat storage element 1400, and the second electric heating element can heat the heat storage solid in the solid heat storage element 1400 and the heat-conducting medium flowing through the solid heat storage element 1400. During the non-heating period, the heat storage solid in the solid heat storage element 1400 is directly heated to convert electrical energy into thermal energy for storage. The storage temperature of the heat storage solid is 90°C-210°C. During the heat-using period, the heat storage solid or the heat-conducting medium flowing through the solid heat storage element 1400 can be heated at the same time. The second electric heating element is externally connected to clean energy such as photovoltaic power, wind power, hydropower or valley power to achieve multi-energy complementarity. The heat storage material of the heat storage solid in the solid heat storage element 1400 can be a salt heat storage material or a magnesium brick, or other materials of the prior art can be used. The second electric heating element can be a product such as an electric heating rod, which can be plugged into the heat storage solid. In the process of the heat-conducting medium flowing through the solid heat storage element 1400, it is wound around the periphery of the heat storage solid through a pipeline. Multiple second electric heating elements can be provided, some of which are inserted into the heat storage solid, and some of which are located outside the heat storage solid. The pipeline for transferring the heat-conducting medium can be separately arranged around the outer periphery of the second electric heating element and at the same time around the outer periphery of the heat storage solid.

[0075] Exemplarily, the outlet of the vacuum heat collecting pipe 1130 and the medium inlet of the heat exchanger 1200 are connected through the medium outlet pipeline 110, and the medium outlet pipeline 110 is provided with a medium first valve body 111 and a medium second valve body 112, the medium outlet of the heat exchanger 1200 and the oil-gas separator 1700 are connected through the medium first return pipeline 120, and the medium first return pipeline 120 is provided with a medium third valve body 121; the outlet of the low-level oil storage tank 1600 and the inlet of the vacuum heat collecting pipe 1130 are connected through the medium second return pipeline 130, and the medium second return pipeline 130 is provided with a medium fourth valve body 131, and the oil pump 132 is provided in the medium second return pipeline 130 and is located between the medium fourth valve body 131 and the low-level oil storage tank 1600. The heat-conducting medium flowing out of the heat exchanger 1200 flows through the oil-gas separator 1700 and enters the low-level oil storage tank 1600.

[0076] The fluid inlet of the solid heat storage element 1400 and the medium outlet pipeline 110 are connected through the solid first pipeline 140, and the connection between the medium outlet pipeline 110 and the solid first pipeline 140 is located between the medium first valve body 111 and the medium second valve body 112, and the solid first pipeline 140 is provided with a solid first valve body 141.

[0077] The fluid outlet of the solid heat storage element 1400 is connected to the medium second return pipeline 130 through the solid second pipeline 150, and the connection between the medium second return pipeline 130 and the solid second pipeline 150 is located between the oil pump 132 and the medium fourth valve body 131; the solid second pipeline 150 is provided with a solid second valve body 151 and a solid third valve body 152, and the solid second valve body 151 is close to the solid heat storage element 1400; the solid second pipeline 150 and the medium first return pipeline 120 are connected through the solid third pipeline 160, and the connection between the solid second pipeline 150 and the solid third pipeline 160 is located between the solid second valve body 151 and the solid third valve body 152, and the connection between the medium first return pipeline 120 and the solid third pipeline 160 is located between the oil-gas separator 1700 and the medium third valve body 121. The solid fourth valve body 161 is provided on the solid third pipeline 160.

[0078] The heat storage inlet of the hot water storage tank 1300 and the water outlet of the heat exchange element 1200 are connected through the first heat extraction pipeline 170, and the heat storage outlet of the hot water storage tank 1300 and the water inlet of the heat exchange element 1200 are connected through the second heat extraction pipeline 180, and the second heat extraction pipeline 180 is provided with a hot water extraction pump 181 and a heat extraction valve body 182.

[0079] In the use mode of collector heating, combined with Figure 2 As shown, the first medium valve body 111, the second medium valve body 112, the third medium valve body 121, the fourth medium valve body 131 and the heat extraction valve body 182 are opened, the medium is heated by light, and the heat is stored in the hot water storage tank 1300 through the heat exchanger 1200. Of course, when the cold and hot terminals 2100 need to be heated, the heated hot water flowing out of the heat exchanger 1200 passes over the hot water storage tank 1300 and flows into the heating water outlet main line 210.

[0080] In the use mode of thermal energy storage, combined with Figure 2 As shown, the medium first valve body 111, the medium second valve body 112, the medium third valve body 121, the medium fourth valve body 131, the heat extraction valve body 182, the solid first valve body 141, the solid second valve body 151 and the solid fourth valve body 161 are opened, and the heat-conducting medium is heated by light. The heat-conducting medium flows to the solid heat storage component 1400 and the heat exchange component 1200 at the same time, and part of the heat is stored in the solid heat storage component 1400, and part of the heat is stored in the hot water tank 1300 through the heat exchange component 1200.

[0081] In the use mode of heat storage and heat release, combined with Figure 2As shown, when the light is insufficient at night or during the day, the heat in the hot water storage tank 1300 can be directly used, or the heat in the solid heat storage element 1400 can be used. The use of the heat in the solid heat storage element 1400 requires opening the medium second valve body 112, the medium third valve body 121, the solid first valve body 141, the solid second valve body 151, the solid third valve body 152, and the heat extraction valve body 182.

[0082] In the winter heating usage mode, combined with Figure 3 As shown, when the light source is sufficient, the first heating valve body 211, the second heating valve body 212, the third heating valve body 221 and the fourth heating valve body 222 are opened, so that the hot water in the hot water storage tank 1300 is directly supplied to the cold and hot terminals 2100 to heat them.

[0083] When the light source is insufficient or fluctuates greatly, Figure 3 As shown, an electric vacuum boiler 2300 is used as a supplement. Specifically, the second heating valve body 212, the third heating valve body 221, the fourth heating valve body 222, the electric first valve body 271 and the electric second valve body 281 are opened, so that the hot water flowing out of the hot water storage tank 1300 is heated by the electric vacuum boiler 2300 and then enters the hot and cold terminals 2100, so that the temperature fluctuation of the hot water entering the hot and cold terminals 2100 is small.

[0084] In the first use mode of cooling, combined with Figure 3 As shown, the first heating valve body 211, the first cooling valve body 231, the second cooling valve body 241, the third cooling valve body 251, the fourth cooling valve body 261 and the fourth heating valve body 222 are opened, and hot water enters the heat source inlet of the cooling component 2200 and flows out from the heat source outlet to provide energy for the cooling of the cooling component 2200 and cool the hot and cold terminals 2100.

[0085] In the second use mode of cooling, combined with Figure 3 As shown, the electric heating first valve body 271, the electric heating second valve body 281, the refrigeration first valve body 231, the refrigeration second valve body 241, the refrigeration third valve body 251, the refrigeration fourth valve body 261 and the heating fourth valve body 222 are opened, and the hot water passes through the electric vacuum boiler 2300 and then enters the heat source inlet of the refrigeration component 2200 and flows out from the heat source outlet to ensure that the temperature fluctuation of the hot water entering the refrigeration component 2200 is small, thereby improving the refrigeration effect.

[0086] Among them, the refrigeration component 2200 is a hot water absorption structure, which requires a stable heat source to ensure a good refrigeration effect. Its structure and working principle are well known to those skilled in the art, so they will not be described in detail here.

[0087] During the off-peak hours when heat is not used, Figure 3As shown, the water in the hot water storage tank 1300 is heated by the electric vacuum boiler 2300. Specifically, the electric first valve body 271 and the electric third valve body 291 are opened, and the hot water pump 213 pumps water into the electric vacuum boiler 2300, and after heating, the water flows into the hot water storage tank 1300 again.

[0088] It should be noted that the above description only describes the open valve body, and other valve bodies not mentioned should be in a closed state or the valve body closest to the bifurcation should be in a closed state, as long as the circulation can be guaranteed.

[0089] For example, in combination Figure 3 As shown, during the off-peak period when heat is not used, the water in the hot water storage tank 1300 is heated by the electric vacuum boiler 2300, the electric first valve body 271 and the electric third valve body 291 are opened, the heating fourth valve body 222 is closed, and the heating first valve body 211 and the electric second valve body 281 are closed.

[0090] The hot and cold terminals 2100 may be capillary networks, floor heating (cold) pipes, fan coils, etc., to accommodate hot water with a higher temperature or chilled water with a lower temperature. The hot water temperature may be 45°C-90°C, and the chilled water temperature may be 7°C-12°C. The water entering the hot and cold terminals 2100 is replenished at a constant pressure by a constant pressure tank, and the fully automatic softening water equipment provides the required replenishment.

[0091] Combination Figure 2 and Figure 4 As shown, the reflector 1120 and the vacuum collector tube 1130 are connected by a connecting rod, and the reflector 1120 is rotatably arranged on the support frame 1110 through a rotating shaft, and can be deflected around the axis of the rotating shaft to adapt to the angle of light. The solar thermal collector assembly 1100 also includes a hydraulic motor 1140 arranged on the support frame 1110, and the output end of the hydraulic motor 1140 is connected to the rotating shaft drive, and the oil pump 132 is connected to the hydraulic motor 1140, and can drive the hydraulic motor 1140 to rotate forward and reverse to drive the reflector 1120 to deflect.

[0092] The hydraulic motor 1140 has a hydraulic inlet and a hydraulic outlet, the hydraulic first pipeline 310 is arranged in parallel with the medium second return pipeline 130, and is located between the medium fourth valve body 131 and the vacuum heat collecting tube 1130, the hydraulic first pipeline 310 is provided with a hydraulic first valve body 311 and a hydraulic second valve body 312, the hydraulic inlet and the hydraulic first pipeline 310 are communicated through the hydraulic inlet pipe 340, and the connection between the hydraulic first pipeline 310 and the hydraulic inlet pipe 340 is located between the hydraulic first valve body 311 and The hydraulic second valve body 312 is located between the hydraulic second pipeline 320 and the medium second return pipeline 130 in parallel, and is located between the medium fourth valve body 131 and the vacuum heat collecting tube 1130. The hydraulic second pipeline 320 is provided with a hydraulic third valve body 321 and a hydraulic fourth valve body 322. The hydraulic outlet and the hydraulic second pipeline 320 are connected through a hydraulic outlet pipe 350, and the connection between the hydraulic second pipeline 320 and the hydraulic outlet pipe 350 is located between the hydraulic third valve body 321 and the hydraulic fourth valve body 322. When in use, when the medium fourth valve body 131 is opened, the hydraulic first valve body 311 and the hydraulic fourth valve body 322 are opened, and the hydraulic motor 1140 rotates forward, and when the hydraulic second valve body 312 and the hydraulic third valve body 321 are opened, the hydraulic motor 1140 rotates reversely to drive the reflector 1120 to deflect forward or reversely around the rotation axis to adapt to the position of the sun.

[0093] It is worth noting that the reflector 1120 is usually composed of multiple high-precision mirrors, which can accurately track the position of the sun and ensure that the sunlight is always accurately reflected to the target position. The tracking method can be implemented using methods in the prior art.

[0094] This embodiment has the following advantages:

[0095] (1) Integration of solar thermal energy collection, heat storage, electric heating, heat exchange, operation and maintenance, steam supply, heating, heat source cooling, wind and solar power consumption, and valley power utilization technology solutions.

[0096] (2) Form a multi-energy complementary solar thermal application system, and ensure the normal operation of the system through electric heating and heat storage systems in severe weather.

[0097] (3) The linearly focused photothermal collector assembly 1100 supplies normal pressure hot water to drive the lithium bromide refrigeration system to produce low-temperature cold water. The system is safe and reliable.

[0098] (4) Adding electric auxiliary heating and heat storage modules (including solid heat storage elements 1400 and hot water storage tanks 1300) solves the intermittent, instability and uncontrollable nature of solar thermal energy, achieves perfect absorption of clean energy, effectively smoothes the supply process of fluctuating energy, reduces solar thermal installed capacity, and uses valley electricity heating heat storage media as a backup heating system to improve the economy of the entire system solution.

[0099] (5) By integrating the solid heat storage element 1400 (≤210℃) and the hot water storage tank 1300 (≤95℃) system, the cascade utilization of heat sources at different temperatures is achieved, thereby improving the utilization efficiency of clean energy. The hot water storage tank 1300 uses a safer normal pressure water tank that can withstand a temperature of 95℃.

[0100] (6) The electrical energy is converted into thermal energy to supplement the heating of the solar thermal collector assembly 1100, or stored in a heat storage module. For the cold and hot terminals 2100, it is more stable, safe and economical than the electrochemical electricity storage heating system.

[0101] (7) The hot water side is an open system. The hot water storage tank 1300 adopts a non-pressure upper exhaust and side exhaust structure to avoid negative pressure suction caused by freezing and blockage, and to avoid the safety hazard of excessive pressure caused by excessive water temperature in the hot water storage tank 1300. The system is safe and stable.

[0102] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Solar thermal heating and cooling system, characterized in that: It comprises a heat collection mechanism (1000) and a terminal mechanism (2000), wherein: The heat collection mechanism (1000) comprises a photothermal heat collection component (1100), a heat exchanger (1200) and a hot water storage tank (1300); the photothermal heat collection component (1100) is used to absorb light energy and heat a heat-conducting medium flowing through the heat exchanger (1200); the heat exchanger (1200) is used to transfer the heat of the heat-conducting medium to water flowing through the heat exchanger; and the hot water storage tank (1300) is used to store the heated water; The terminal mechanism (2000) includes: A hot and cold terminal (2100), wherein the hot and cold terminal (2100) can generate heat or cool; The heat supply outlet of the hot water storage tank (1300) is in communication with the heat inlet of the hot and cold terminals (2100), and the heat outlet of the hot and cold terminals (2100) is in communication with the heat supply inlet of the hot water storage tank (1300); A refrigeration component (2200), wherein the heat source inlet of the refrigeration component (2200) is connected to the heat supply outlet of the hot water storage tank (1300), and the heat source outlet of the refrigeration component (2200) is connected to the heat supply inlet of the hot water storage tank (1300); the cold source outlet of the refrigeration component (2200) is connected to the cold inlet of the hot and cold end (2100), and the cold source inlet of the refrigeration component (2200) is connected to the cold outlet of the hot and cold end (2100), wherein a valve body is provided between any two interfaces to control on-off.

2. The solar thermal heating and cooling system according to claim 1, characterized in that: The terminal mechanism (2000) further comprises an electric vacuum boiler (2300), wherein a first electric heating element capable of heating water passing through the electric vacuum boiler (2300) is provided inside the electric vacuum boiler (2300), the inlet of the electric vacuum boiler (2300) is connected to the heat supply outlet of the hot water storage tank (1300), and an electric first valve body (271) is provided, the outlet of the electric vacuum boiler (2300) is simultaneously connected to the heat inlet of the hot and cold terminal (2100) and the heat source inlet of the refrigeration component (2200), and an electric second valve body (281) is provided at the outlet of the electric vacuum boiler (2300).

3. The solar thermal heating and cooling system according to claim 2, characterized in that: The outlet of the electric vacuum boiler (2300) is connected to the heat supply inlet of the hot water storage tank (1300), and an electric third valve body (291) is provided at the outlet of the electric vacuum boiler (2300).

4. The solar thermal heating and cooling system according to claim 1, characterized in that: The photothermal heat collection assembly (1100) comprises a support frame (1110), a reflector (1120) and a vacuum heat collection tube (1130) arranged on the support frame (1110), wherein the reflector (1120) is used to reflect light energy to the vacuum heat collection tube (1130) to heat the heat-conducting medium inside the vacuum heat collection tube (1130); The outlet of the vacuum heat collecting tube (1130) is connected to the medium inlet of the heat exchange element (1200), and the medium outlet of the heat exchange element (1200) is connected to the inlet of the vacuum heat collecting tube (1130). An oil pump (132) is provided on the connecting pipeline between the heat exchange element (1200) and the vacuum heat collecting tube (1130) to drive the heat-conducting medium to circulate between the heat exchange element (1200) and the vacuum heat collecting tube (1130).

5. The solar thermal heating and cooling system according to claim 4, characterized in that: The photothermal heat collection assembly (1100) further comprises an oil storage component, which is connected in series between the heat exchange component (1200) and the vacuum heat collection tube (1130), and the oil pump (132) is arranged between the oil storage component and the vacuum heat collection tube (1130).

6. The solar thermal heating and cooling system according to claim 4, characterized in that: The heat collection mechanism (1000) further comprises a solid heat storage component (1400), wherein the solid heat storage component (1400) is used to absorb and store heat from a heat-conducting medium flowing through the solid heat storage component; The fluid inlet of the solid heat storage component (1400) is connected to the outlet of the vacuum heat collecting tube (1130), and a solid first valve body (141) is provided at the fluid inlet of the solid heat storage component (1400); the fluid outlet of the solid heat storage component (1400) is connected to the medium outlet of the heat exchange component (1200), and a solid second valve body (151) is provided at the fluid outlet of the solid heat storage component (1400).

7. The solar thermal heating and cooling system according to claim 6, characterized in that: The fluid outlet of the solid heat storage element (1400) is connected to the inlet of the vacuum heat collection tube (1130).

8. The solar thermal heating and cooling system according to claim 7, characterized in that: A second electric heating element is arranged inside the solid heat storage element (1400), and the second electric heating element can heat the heat storage solid inside the solid heat storage element (1400) and the heat-conducting medium flowing through the solid heat storage element (1400).

9. The solar thermal heating and cooling system according to claim 4, characterized in that: The reflector (1120) and the vacuum heat collecting tube (1130) are connected by a connecting rod, and the reflector (1120) is rotatably arranged on the support frame (1110) via a rotating shaft, and can be deflected around the axis of the rotating shaft to adapt to the angle of light. The photothermal heat collecting assembly (1100) also includes a hydraulic motor (1140) arranged on the support frame (1110), and the output end of the hydraulic motor (1140) is connected to the rotating shaft for driving, and the oil pump (132) is connected to the hydraulic motor (1140) and can drive the hydraulic motor (1140) to rotate forward and reverse to drive the reflector (1120) to deflect.

10. The solar thermal heating and cooling system according to any one of claims 1 to 9, characterized in that: The heat storage inlet of the hot water storage tank (1300) is connected to the water outlet of the heat exchange element (1200), the heat storage outlet of the hot water storage tank (1300) is connected to the water inlet of the heat exchange element (1200), and a hot water extraction pump (181) and a heat extraction valve body (182) are provided between the two.

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