Household solar high-temperature heat utilization system

Abstract

The utility model relates to a household solar high-temperature heat utilization system, which comprises a solar air heater (7) for performing heat recovery on solar energy; the heat conduction oil tank (1) is used as a heat storage device for storing heat; the heat-conducting oil pump (17) is used for pressurizing and conveying heat-conducting oil; the heat storage heat exchanger (14) is used for converting the heat of the hot gas into heat conduction oil; and the absorption refrigerator is used for absorbing heat of the heat storage and conduction oil to realize the refrigeration cycle process of the refrigerant. The solar air heater is used for absorbing solar heat, oil-gas heat exchange is achieved through the heat storage heat exchanger, heat is stored in heat conduction oil in the heat conduction oil tank, and then the high-temperature heat conduction oil in the heat conduction oil tank is used for dragging the absorption type refrigerator to refrigerate or an oil heater is used for household steaming, boiling, boiling, boiling water and the like. Therefore, high-temperature heat utilization of solar energy in families is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar heat utilization, and particularly relates to a household solar high-temperature heat utilization system adopting a solar hot air generator, heat-conducting oil high-temperature heat storage and an absorption refrigeration device. BACKGROUND

[0002] Solar heat utilization application forms include solar hot water supply, solar heating, solar refrigeration, solar industrial and agricultural application, photovoltaic-thermal integration (PV / T) application and the like. In terms of system installed capacity, in 2022, the installed capacity of household solar heat utilization systems providing domestic hot water or heating for single-family houses accounted for about 60% of the total installed capacity of global solar heat utilization systems. In the field of people's livelihood and household use, solar water heating systems and solar photovoltaic power generation are the main application forms.

[0003] Solar water heating system: In 2009, there were more than 3,000 solar water heating system enterprises in China, with an annual production of about 40 million square meters, and a total amount of 145 million square meters, accounting for 78% and 54% of the world respectively. The solar water heating system mainly produces hot water below 100℃. If the temperature of the hot water is 150-200℃, the water in this temperature range will not boil and vaporize, and a pressure of 0.5-1.6 MPa needs to be maintained, which requires a high-pressure container and pipeline valves. When used, steam may be flashed out, which is not convenient for actual use. The hot water produced by the solar water heating system cannot be used in time and completely, which is easy to cause waste. In addition, the problem of scale formation and leakage of the solar water heating system is a persistent problem.

[0004] Photovoltaic system: The efficiency of photovoltaic power generation is relatively low. Because the photovoltaic panel mainly absorbs visible light and infrared rays in solar radiation, and the absorption capacity of ultraviolet and blue light is relatively weak, the conversion efficiency of crystalline silicon photovoltaic cells in actual application is only 13%-26%. In the photovoltaic power generation technology, silicon body crystal materials are needed, and the main raw material of crystalline silicon cells is pure silicon. The production and purification process needs to go through multiple chemical and physical processes, which not only consumes a large amount of energy, but also pollutes the environment to a certain extent. Moreover, photovoltaic power is an unstable power source, which is limited in grid connection and needs to be equipped with energy storage devices.

[0005] At present, China is actually the largest producer and user of solar hot water system and the largest user of photovoltaic application. How to change from a large user of solar heat to a strong user of solar heat, overcome the problems existing in the current solar hot water utilization system and photovoltaic system, timely and efficiently and flexibly utilize the heat obtained by the solar collector, avoid the loss of solar heat in the photovoltaic conversion process, store and utilize the heat obtained in the photothermal conversion process in a simple and convenient form, eliminate the heat waste phenomenon and scale formation problem caused by the unused hot water in the current solar hot water system, and reasonably apply it to family life, which is worth further studying. SUMMARY

[0006] The purpose of the present application is to solve the problems existing in the current solar hot water system and photovoltaic system in family application, utilize the solar hot air generator and heat storage oil heat storage technology for solar heat collection, heat storage and heat supply, fully utilize the characteristics of heat storage oil as "low pressure high temperature" and high quality heat storage and heat supply medium, utilize the heat storage heat storage oil to drive the absorption refrigerator to refrigerate, and finally realize the long period and high efficiency heat utilization of solar energy in the family.

[0007] A kind of family solar high temperature heat utilization system, comprising:

[0008] Solar hot air generator 7, heat recovery is carried out to solar energy,

[0009] Heat conducting oil tank 1 as heat storage heat accumulator,

[0010] Heat conducting oil pump 17, heat conducting oil is pressurized and transported,

[0011] Heat storage heat exchanger 14, the heat of hot gas is converted into heat conducting oil,

[0012] Absorption refrigerator, for absorbing heat storage heat conducting oil heat, realizing the refrigeration cycle process of refrigeration working medium,

[0013] The gas from the heat storage heat exchanger 14 returns to the solar hot air generator 7 through the circulating fan 4 and the return air pipeline 5, absorbs solar heat through the heat collecting pipe in the solar hot air generator 7, and then is transported to the heat storage heat exchanger 14, or the gas from the heat storage heat exchanger 14 returns to the solar hot air generator 7 through the return air pipeline 5, absorbs solar heat through the heat collecting pipe in the solar hot air generator 7, and then is transported to the heat storage heat exchanger 14 through the ventilator 13, thereby forming a solar heat recovery and heat release circulation loop of gas;

[0014] The heat conducting oil in the heat conducting oil tank 1 is pressurized by the heat conducting oil pump 17, sent to the heat storage heat exchanger 14, heat exchanged with the hot air sent by the solar hot air generator 7, the temperature of the heat conducting oil is raised, and returned to the heat conducting oil tank 1 through the heat storage heat conducting oil return pipeline 34, thereby forming a heat storage circulation loop of the heat conducting oil in the heat conducting oil tank 1;

[0015]

[0015] The absorption chiller includes:

[0016] Generator 23, condenser 24, evaporator 25, absorber 21, and solution pump 22,

[0017] The heat transfer oil in the heat transfer oil tank 1 is pressurized by the heat transfer oil pump 17. The pressurized heat transfer oil is then transported to the generator 23 of the absorption chiller to heat the refrigerant in the generator 23 to concentrate the solution. The oil then returns to the heat transfer oil tank 1 through the return heat transfer oil pipeline 33, thus forming a heat supply circulation loop for the heat transfer oil stored in the heat transfer oil tank 1.

[0018] The high-temperature gaseous refrigerant 31 generated in the generator 23 by heating the refrigerant to a concentrated solution with heat transfer oil enters the evaporator 25 through the condenser 24 and the expansion valve F10, absorbing heat from the cooling unit 27. The low-temperature gaseous refrigerant 32 generated by evaporation in the evaporator 25 returns to the absorber 21, where it contacts the refrigerant to a dilute solution formed in the generator 23 from the dilute solution regulating valve F9, forming a concentrated refrigerant solution. The concentrated refrigerant solution in the absorber 21 then returns to the generator 23 through the solution pump 22, thus forming a refrigerant circulation loop in the absorption chiller.

[0019] The cooling medium from the cooling unit 27 is pressurized by the cooling medium booster 28 and then sent to the evaporator 25 to absorb the cooling energy released by the evaporation of the liquid refrigerant in the evaporator 25. The cooling medium, which has absorbed the cooling energy and whose temperature has decreased, returns to the cooling unit 27 for cooling. Alternatively, the cooling medium from the cooling unit 27 enters the evaporator 25, absorbs the cooling energy released by the evaporation of the liquid refrigerant in the evaporator 25, and the cooling medium, which has absorbed the cooling energy and whose temperature has decreased, is pressurized by the cooling medium booster 28 and then returns to the cooling unit 27 for cooling. This forms a cooling medium circulation loop in which the cooling medium is charged and then supplied to the cooling unit 27 for cooling.

[0020] The cooling unit 27 refers to a cooling space in a home, such as a room cooling or a refrigerator.

[0021] The cooling medium for the condenser 24 and absorber 21 is air, water, aqueous solution of sodium chloride, or aqueous solution of ethylene glycol, etc., for example, [missing information]. Figure 1 As shown, the cooling medium supplied by the cooling medium booster 39 passes through the condenser 24, cooling the high-temperature gaseous refrigerant 31 and absorbing its heat. The resulting high-temperature cooling medium is discharged, and the high-temperature gaseous refrigerant 31 condenses into a liquid refrigerant, which is then sent to the evaporator 25.

[0022] The refrigerant pair dilute solution from the dilute solution regulating valve F9 absorbs the low-temperature gaseous refrigerant 32 to form a refrigerant pair concentrated solution, and the released heat is removed by the cooling medium sent by the cooling medium booster 39 to form a high-temperature cooling medium outlet;

[0023] When the cooling medium is air, the cooling medium booster 39 is a fan, and an open cycle mode is adopted. The air is sent into the condenser 24 and the absorber 21 by the cooling medium booster 39 to absorb the heat released when the high-temperature gaseous refrigerant 31 in the condenser 24 is condensed and the heat released when the refrigerant pair dilute solution in the absorber 21 absorbs the low-temperature gaseous refrigerant 32 to form a refrigerant pair concentrated solution, and the formed high-temperature absorber outlet cooling medium 41 and condenser outlet cooling medium 42 are discharged.

[0024] When the cooling medium is liquid, the cooling medium booster 39 is a liquid circulating pump. The cooling medium is sent into the condenser 24 and the absorber 21 by the cooling medium booster 39 to absorb the heat released when the high-temperature gaseous refrigerant 31 in the condenser 24 is condensed and the heat released when the refrigerant pair dilute solution in the absorber 21 absorbs the low-temperature gaseous refrigerant 32 to form a refrigerant pair concentrated solution, and the formed high-temperature absorber outlet cooling medium 41 and condenser outlet cooling medium 42 enter the cooling tower 43 for cooling and then return to the cooling medium booster 39, thereby forming a cooling medium circulating loop.

[0025] The absorption refrigerators select corresponding absorption refrigerant pairs, including but not limited to ammonia-water, ammonia-sodium thiocyanate solution, the refrigerant pair (dimethyl ether-ion liquid working medium) provided in CN202210567342.6, the refrigerant pair (R134a-DMETG solution) provided in CN202211615323.2, or the refrigerant pair (ammonia-ion liquid working medium) provided in CN202310535508.0.

[0026] An oil heater 49 is provided:

[0027] The oil heater 49 includes a heating element 50. The heat-conducting oil in the heat-conducting oil tank 1 is pressurized by the heat-conducting oil pump 18, the pressurized heat-conducting oil is delivered to the oil heater 49, the heating element 50 (for example, a heating element made of a flat plate type hollow cavity structure, a jacket type hollow cavity structure, or a square tube disc of a hollow cavity) is used to complete heating, and the heated water is used for cooking, making rice, cooking, frying, etc. The heat-conducting oil from the oil heater 49 returns to the heat-conducting oil tank 1, thereby forming an energy release circuit of the heat storage heat-conducting oil in the heat-conducting oil tank 1.

[0028] The oil heater 49 includes an oil hot water kettle, an oil hot rice cooker, an oil hot steamer, an oil hot frying pan, an oil hot air dryer, etc.

[0029] The high-temperature heat-conducting oil stored in the heat-conducting oil tank 1, with a temperature exceeding 140℃, can meet the heating temperature requirements for boiling water, steaming rice, cooking rice, and making porridge. The functional design of the oil-heated kettle, oil-heated rice cooker, oil-heated steamer, oil-heated frying pan, etc., can refer to the functional settings of the corresponding electric heating equipment. Preferably, the contact part between the oil heater 49 and the heating element 50 adopts the same structural design, thereby enhancing the flexibility and versatility of the heating element 50 in use with cooking utensils.

[0030] A heat exchanger 46 is provided: The heat exchanger 46 is located between the outlet of the solar hot air blower 7 and the heat storage exchanger 14. It uses electric heating, compressed air heat, fuel combustion heat, etc. to supplement the heat required to dry chamber 6 and heat transfer oil tank 1. For example, the heat exchanger medium 47 is hot air 47 generated by natural gas combustion, which enters the heat exchanger 46 to heat the air sent by the solar hot air blower 7. The low-temperature flue gas formed is the heat exchanger medium 48 that is discharged. Alternatively, the heat exchanger 46 is located between heat transfer oil pump 17 and heat transfer oil tank 1. For example, the heat exchanger medium 47 is hot air 47 generated by natural gas combustion, which enters the heat exchanger 46 to heat the heat transfer oil sent by the heat transfer oil pump 17. The low-temperature flue gas formed is the heat exchanger medium 48 that is discharged. The heated heat transfer oil returns to heat transfer oil tank 1.

[0031] The solar hot air heater 7 includes, but is not limited to, a through-type heat collector tube 10, a heat pipe 72, or a single-pass heat collector tube.

[0032] When the solar hot air heater 7 uses a through-type heat collector tube 10, the through-type heat collector tube 10 can be connected in series, parallel, or series-parallel configurations:

[0033] For example, attached Figure 1 As shown, multiple through-type heat collection pipes 10 are used in parallel, and two sets of solar hot air heaters 7 (double-box hot air heaters) are used in series. The solar hot air heater 7 includes a left box 8, a right box 9, and through-type heat collection pipes 10. Several through-type heat collection pipes 10 are arranged in parallel between the left box 8 and the right box 9. The through-type heat collection pipes 10 absorb the heat of solar energy and heat the gas entering the right box 9. The high-temperature gas generated is drawn out from the left box 8 and transported to the heat storage heat exchanger 14 to heat the heat transfer oil, and then returns to the right box 9, thus forming a closed-loop gas circulation loop of the through-type heat collection pipe solar hot air heater 7. The hot air from the outlet of one set of solar hot air heaters 7 is used in series as the inlet gas of the other set of solar hot air heaters.

[0034] For example, attached Figure 1As shown, multiple through-type heat collection tubes 10 are used in series, and two sets of solar hot air heaters 7 (parallel hot air heaters) are used in series. The solar hot air heater 7 includes a parallel collector 37, a concentrator 38, and through-type heat collection tubes 10. Gas enters the multiple through-type heat collection tubes 10 connected in series. The through-type heat collection tubes 10 absorb the heat of solar energy and heat the incoming gas. The high-temperature gas generated is drawn out and used as the incoming gas for another set of solar hot air heaters in series.

[0035] Preferably, the through-type heat collection tube 10 is a vacuum heat collector, with the inner layer being a stainless steel tube and the outer layer being a glass tube with metal corrugated tubes at both ends. The outer surface of the inner tube is coated with a selective absorption coating to maximize the absorption rate of direct solar radiation and minimize infrared re-radiation.

[0036] When the solar hot air heater 7 adopts a heat pipe collector, as shown in the attached... Figure 2 As shown, the outer surface of the heat pipe 72 in the vacuum glass tube 71 is coated with a selective absorption coating, which is the evaporation part of the heat pipe 72. The part of the heat pipe 72 that extends into the header 74 is the condensation part of the heat pipe 72, which absorbs the heat of solar energy and is used to heat the gas 75 entering the header.

[0037] When the solar hot air heater 7 uses a single-pass collector tube, as shown in the attached... Figure 3 As shown, the single-pass solar collector tube adopts a three-tube structure, including a vacuum glass tube 71, an inner tube 78, an inlet branch pipe 81, a sealing element 79, an inlet main pipe 80, and a header 74. The outer surface of the inner tube 78 of the single-pass solar collector tube is coated with a selective absorption coating. Gas is pressurized by the circulating fan 4 and enters the inlet main pipe 80, then flows into the inlet branch pipe 81. At the bottom of the inner tube 78 of the single-pass solar collector tube, it flows back into the inner tube 78 of the single-pass solar collector tube, absorbs the heat of solar energy, and the generated hot gas enters the header 74 to form hot air 76 for output; or the gas enters the inlet main pipe 80 and then flows into the inlet branch pipe 81. At the bottom of the inner tube 78 of the single-pass solar collector tube, it flows back into the inner tube 78 of the single-pass solar collector tube, absorbs the heat of solar energy, and the generated hot gas enters the header 74 to form hot air 76, which is then drawn out by the fan 13 for output.

[0038] The circulating fan 4 is equipped with an adjusting damper 3 for adjusting the air volume of the circulating fan 4.

[0039] The ventilator 13 is equipped with a hot air regulating damper 12 for adjusting the air volume of the ventilator 13.

[0040] The circulating fan 4 and the ventilation fan 13 are essentially the same; the names are only used to distinguish them.

[0041] The circulating fan 4 or the ventilation fan 13 mentioned above is a centrifugal, axial, screw, or vortex fan.

[0042] The solar hot air generator 7 is provided with necessary support rods or support frames, and is safely, stably and effectively fixed, so as to avoid overturning accidents caused by strong wind and the like.

[0043] The inlet pipeline of the heat conducting oil pump 17 is provided with a filter for filtering solid impurity particles in the heat conducting oil in the inlet pipeline.

[0044] The heat conducting oil tank 1 in the heat conducting oil system plays the roles of oil gas separation, buffering, heat storage and storage, and needs to take heat preservation measures.

[0045] The heat conducting oil system is provided with necessary exhaust valves and safety valves.

[0046] The heat conducting oil tank 1 adopts a horizontal or vertical structure, preferably a vertical structure, so as to facilitate compact arrangement of the system.

[0047] The valve names in the application are only used for differentiation, and some actual functions are the same.

[0048] The circulating fan 4 or the ventilator 13 adopts a variable frequency speed regulation operation mode, and can flexibly adjust the air supply amount and air supply pressure when the sunlight and heat supply conditions change.

[0049] The absorption type refrigerators of the system can adopt measures such as back cooling, back heating and rectification.

[0050] The heat conducting oil in the heat conducting oil tank 1 in the application can also be used as a heat source to drive the adsorption type refrigerator to refrigerate, so as to realize high temperature and high efficiency and flexible heat utilization of solar energy.

[0051] Pipelines, instruments, valves, regulation bypasses and the like not mentioned in the application are matched with mature technologies in known organic heat carrier boilers, solar hot water engineering, heat exchangers and absorption type refrigerators.

[0052] Parts not mentioned in the application, such as safety accessories, interlocking protection devices and automatic control, are matched with existing known technologies.

[0053] Compared with the prior art, the application has the following advantages:

[0054] 1. Compared with the prior art, the application eliminates the problem of low heat utilization efficiency of the existing solar hot water system and photovoltaic utilization system, safely and efficiently recovers solar heat by using the solar hot air generator, stores the heat in heat conducting oil, and uses the heat conducting oil at nearly constant pressure and at a relatively high temperature to facilitate timely, flexible and efficient heat utilization of household users, which has an advantage that cannot be compared with a hot water recovery system; during a continuous rainy period, the heat can be conveniently supplemented through a heat supplementing device.

[0055] 2. Compared with the prior art, the application recovers solar heat safely and efficiently by using a solar hot air generator, stores the heat in heat conducting oil, and drives an absorption refrigerator by the heat conducting oil to refrigerate and supply cold, so that the user can use the cold conveniently, flexibly and efficiently.

[0056] 3. Compared with the prior art of solar water heater directly heating water by a heat collecting pipe, since gas passes through the heat collecting pipe, dust is not easy to accumulate, the heat collecting pipe has high heat transfer efficiency, and is not easy to be blocked by scale, so that the maintenance cost is extremely low and the operation cycle is greatly prolonged. In winter, the heat collecting pipe is not easy to be blocked by ice due to low temperature, and is not easy to be cracked and leak at the connection between the heat collecting water tank and the heat collecting pipe.

[0057] 4. Compared with the prior art, the oil heater heated by the heat conducting oil can be used for boiling water, cooking, cooking food, cooking porridge and as a heat source of a hot air generator, so that high temperature heat utilization of solar energy is realized. BRIEF DESCRIPTION OF DRAWINGS

[0058] Figure 1 is a structure schematic diagram of a household solar high temperature heat utilization system of the application.

[0059] Figure 1Fig. 1 is a schematic diagram of the heat pipe solar air heater according to the present application. In the figure: 1 - heat transfer oil tank, 2 - heat transfer oil tank gas space, 3 - regulating damper, 4 - circulating fan, 5 - return air duct, 7 - solar air heater, 8 - left header, 9 - right header, 10 - through heat collecting tube, 12 - hot air measuring and regulating damper, 13 - fan, 14 - heat storage heat exchanger, 16 - pressure gauge, 17 - heat transfer oil pump, 21 - absorber, 22 - solution pump, 23 - generator, 24 - condenser, 25 - evaporator, 26 - cold carrier medium duct, 27 - cold unit, 28 - cold carrier medium booster (when the cold carrier medium is liquid, it is a cold carrier medium circulating pump; when the cold carrier medium is gas, it is a cold carrier medium circulating fan), 29 - concentrated solution duct, 30 - dilute solution duct, 31 - high-temperature gaseous refrigerant, 32 - low-temperature gaseous refrigerant, 33 - heat transfer oil return line, 34 - heat storage heat transfer oil return line, 35 - heat storage hot air return line, 37 - trough collector, 38 - light condensing plate, 39 - cooling medium booster (when the cooling medium is liquid, it is a cooling medium circulating pump; when the cooling medium is air, it is a blower), 40 - cooling medium, 41 - absorber outlet cooling medium, 42 - condenser outlet cooling medium, 43 - cooling tower, 44 - enhanced heat and moisture exchange element, 45 - cooling tower fan, 46 - heat supplement device, 47 - heat supplement medium, 48 - exhaust heat supplement medium, 49 - oil heater, 50 - heating element; F1 to F5, F7 to F10, F13 to F16, F18 are valves, wherein: F2 - exhaust valve, F3 - safety valve, F4 - pressure gauge valve, F9 - dilute solution regulating valve, F10 - throttling valve, F18 - exhaust valve, and the remaining valves are regulating valves or stop valves.

[0060] Figure 2 Fig. 2 is a schematic diagram of the heat pipe solar air heater according to the present application.

[0061] Figure 2 In the figure: 7 - solar air heater, 71 - vacuum glass tube, 72 - heat pipe, 73 - sealing plug, 74 - header, 75 - air inlet of solar air heater 7, 76 - air outlet of solar air heater 7.

[0062] Figure 3 Fig. 3 is a schematic diagram of the single-pass heat collecting tube solar air heater according to the present application.

[0063] Figure 3 In the figure: 7 - solar air heater, 71 - vacuum glass tube, 74 - header, 75 - air inlet of solar air heater 7, 76 - air outlet of solar air heater 7, 78 - inner tube of single-pass heat collecting tube, 79 - sealing plug, 80 - air inlet main pipe, 81 - air inlet branch pipe. DETAILED DESCRIPTION

[0064] The present application will be further described in detail below in conjunction with the accompanying drawings and specific examples. EXAMPLE

[0065] As shown in the accompanying drawings Figure 1 A domestic solar high-temperature heat utilization system comprises:

[0066] A solar heat collector 7 for heat recovery of solar energy,

[0067] A heat conducting oil tank 1 as a heat storage heat accumulator,

[0068] A heat conducting oil pump 17 for boosting and conveying heat conducting oil,

[0069] A heat storage heat exchanger 14 for converting heat of hot gas into heat conducting oil,

[0070] An absorption refrigerator for absorbing heat of heat storage heat conducting oil and realizing a refrigeration cycle process of refrigerant,

[0071] Gas from the heat storage heat exchanger 14 is returned to the solar heat collector 7 through a circulating fan 4 and a return air pipeline 5, and then is conveyed to the heat storage heat exchanger 14 after absorbing solar heat through heat collecting pipes in the solar heat collector 7, or the gas from the heat storage heat exchanger 14 is returned to the solar heat collector 7 through the return air pipeline 5, and then is conveyed to the heat storage heat exchanger 14 through a ventilator 13 after absorbing solar heat through heat collecting pipes in the solar heat collector 7, thereby forming a solar heat recovery and heat release circulation loop of gas;

[0072] The heat conducting oil in the heat conducting oil tank 1 is boosted by the heat conducting oil pump 17, and is sent to the heat storage heat exchanger 14 to exchange heat with hot air sent from the solar heat collector 7, so that the temperature of the heat conducting oil is increased, and the heat conducting oil is returned to the heat conducting oil tank 1 through a heat storage heat conducting oil return pipeline 34, thereby forming a heat storage circulation loop of heat conducting oil in the heat conducting oil tank 1;

[0073] The absorption refrigerator comprises:

[0074] A generator 23, a condenser 24, an evaporator 25, an absorber 21 and a solution pump 22,

[0075] The heat conducting oil in the heat conducting oil tank 1 is boosted by the heat conducting oil pump 17, and the boosted heat conducting oil is conveyed to the generator 23 of the absorption refrigerator to heat refrigerant in the generator 23 against concentrated solution, and then is returned to the heat conducting oil tank 1 through a return heat conducting oil pipeline 33, thereby forming a heat supply circulation loop of heat storage heat conducting oil in the heat conducting oil tank 1,

[0076] The high-temperature gaseous refrigerant 31 generated in the generator 23 by heating the refrigerant to a concentrated solution with heat transfer oil enters the evaporator 25 through the condenser 24 and the expansion valve F10, absorbing heat from the cooling unit 27. The low-temperature gaseous refrigerant 32 generated by evaporation in the evaporator 25 returns to the absorber 21, where it contacts the refrigerant to a dilute solution formed in the generator 23 from the dilute solution regulating valve F9, forming a concentrated refrigerant solution. The concentrated refrigerant solution in the absorber 21 then returns to the generator 23 through the solution pump 22, thus forming a refrigerant circulation loop in the absorption chiller.

[0077] The cooling medium from the cooling unit 27 is pressurized by the cooling medium booster 28 and then sent to the evaporator 25 to absorb the cooling energy released by the evaporation of the liquid refrigerant in the evaporator 25. The cooling medium, which has absorbed the cooling energy and whose temperature has decreased, returns to the cooling unit 27 for cooling. Alternatively, the cooling medium from the cooling unit 27 enters the evaporator 25, absorbs the cooling energy released by the evaporation of the liquid refrigerant in the evaporator 25, and the cooling medium, which has absorbed the cooling energy and whose temperature has decreased, is pressurized by the cooling medium booster 28 and then returns to the cooling unit 27 for cooling. This forms a cooling medium circulation loop in which the cooling medium is charged and then supplied to the cooling unit 27 for cooling.

[0078] The cooling unit 27 refers to a cooling space in a home, such as a room cooling or a refrigerator.

[0079] The cooling medium for the condenser 24 and absorber 21 is air, water, aqueous solution of sodium chloride, or aqueous solution of ethylene glycol, etc., for example, [missing information]. Figure 1 As shown, the cooling medium supplied by the cooling medium booster 39 passes through the condenser 24, cooling the high-temperature gaseous refrigerant 31 and absorbing its heat. The resulting high-temperature cooling medium is discharged, and the high-temperature gaseous refrigerant 31 condenses into a liquid refrigerant, which is then sent to the evaporator 25.

[0080] In the absorber 21, the refrigerant from the dilute solution regulating valve F9 absorbs the low-temperature gaseous refrigerant 32 into the dilute solution, forming a refrigerant in the concentrated solution. The heat released is removed by the cooling medium sent by the cooling medium booster 39, and the high-temperature cooling medium is discharged.

[0081] When the cooling medium is air, the cooling medium booster 39 is a fan, and an open circulation mode is adopted. Air is sent into the condenser 24 and the absorber 21 through the cooling medium booster 39. The condenser 24 absorbs the heat released when the high-temperature gaseous refrigerant 31 is condensed, and the absorber 21 absorbs the heat released when the refrigerant absorbs the low-temperature gaseous refrigerant 32 to form a refrigerant to form a concentrated solution. The high-temperature absorber outlet cooling medium 41 and condenser outlet cooling medium 42 are discharged.

[0082] When the cooling medium is liquid, the cooling medium booster 39 is a liquid circulating pump, and the cooling medium is sent into the condenser 24 and the absorber 21 by the cooling medium booster 39 to absorb the heat released when the high-temperature gaseous refrigerant 31 in the condenser 24 is condensed and the heat released when the refrigerant pair dilute solution in the absorber 21 absorbs the low-temperature gaseous refrigerant 32 to form a refrigerant pair concentrated solution, and the high-temperature absorber outlet cooling medium 41 and the condenser outlet cooling medium 42 formed are sent into the cooling tower 43 for cooling and then returned to the cooling medium booster 39, thereby forming a cooling medium circulating loop.

[0083] The cooling medium of the condenser 24 and the absorber 21 uses water, for example, as shown in the attached Figure 1 The cooling medium is sent into the condenser 24 and the absorber 21 by the cooling medium booster 39 to absorb the heat released when the high-temperature gaseous refrigerant 31 in the condenser 24 is condensed and the heat released when the refrigerant pair dilute solution in the absorber 21 absorbs the low-temperature gaseous refrigerant 32 to form a refrigerant pair concentrated solution, and the high-temperature absorber outlet cooling medium 41 and the condenser outlet cooling medium 42 formed are sent into the cooling tower 43 for cooling and then returned to the cooling medium booster 39, thereby forming a cooling medium circulating loop.

[0084] The cooling tower 43 includes a reinforced heat and humidity exchange element 44, an air inlet louvre, a cooling tower fan 45, etc.

[0085] The absorption refrigeration device selects ammonia-water or ammonia-sodium thiocyanate solution as the refrigerant pair.

[0086] An oil heater 49 is provided:

[0087] The oil heater 49 includes a heating element 50, and the heat-conducting oil in the heat-conducting oil tank 1 is pressurized by the heat-conducting oil pump 18, the pressurized heat-conducting oil is delivered to the oil heater 49, and the heating is completed by using the heating element 50 (for example, a heating element made of a flat plate type hollow cavity structure, a jacket type hollow cavity structure, or a square tube disc of a hollow cavity), heating water, cooking, cooking, porridge, frying, etc., and the heat-conducting oil from the oil heater 49 returns to the heat-conducting oil tank 1, thereby forming an energy release circuit for the heat storage heat-conducting oil in the heat-conducting oil tank 1.

[0088] The oil heater 49 includes an oil hot water kettle, an oil hot rice cooker, an oil hot steamer, an oil hot frying pan, an oil hot air heater, etc.

[0089] The high-temperature heat-conducting oil stored in the heat-conducting oil tank 1, with a temperature exceeding 140℃, can meet the heating temperature requirements for boiling water, steaming rice, cooking rice, and making porridge. The functional design of the oil-heated kettle, oil-heated rice cooker, oil-heated steamer, oil-heated frying pan, etc., can refer to the functional settings of the corresponding electric heating equipment. Preferably, the contact part between the oil heater 49 and the heating element 50 adopts the same structural design, thereby enhancing the flexibility and versatility of the heating element 50 in use with cooking utensils.

[0090] A heat exchanger 46 is provided: The heat exchanger 46 is located between the heat transfer oil pump 17 and the heat transfer oil tank 1. For example, the heat exchanger medium 47 is hot air 47 generated by the combustion of natural gas, which enters the heat exchanger 46 to heat the heat transfer oil sent by the heat transfer oil pump 17. The low-temperature flue gas formed is discharged as the heat exchanger medium 48, and the heated heat transfer oil returns to the heat transfer oil tank 1.

[0091] The solar hot air heater 7 uses a through-type heat collector tube 10, which can be connected in series, parallel, or series-parallel configurations.

[0092] For example, attached Figure 1 As shown, multiple through-type heat collection pipes 10 are used in parallel, and two sets of solar hot air heaters 7 (double-box hot air heaters) are used in series. The solar hot air heater 7 includes a left box 8, a right box 9, and through-type heat collection pipes 10. Several through-type heat collection pipes 10 are arranged in parallel between the left box 8 and the right box 9. The through-type heat collection pipes 10 absorb the heat of solar energy and heat the gas entering the right box 9. The high-temperature gas generated is drawn out from the left box 8 and transported to the heat storage heat exchanger 14 to heat the heat transfer oil, and then returns to the right box 9, thus forming a closed-loop gas circulation loop of the through-type heat collection pipe solar hot air heater 7. The hot air from the outlet of one set of solar hot air heaters 7 is used in series as the inlet gas of the other set of solar hot air heaters.

[0093] For example, attached Figure 1 As shown, multiple through-type heat collection tubes 10 are used in series, and two sets of solar hot air heaters 7 (parallel hot air heaters) are used in series. The solar hot air heater 7 includes a parallel collector 37, a concentrator 38, and through-type heat collection tubes 10. Gas enters the multiple through-type heat collection tubes 10 connected in series. The through-type heat collection tubes 10 absorb the heat of solar energy and heat the incoming gas. The high-temperature gas generated is drawn out and used as the incoming gas for another set of solar hot air heaters in series.

[0094] Preferably, the through-type heat collection tube 10 is a vacuum heat collector, with the inner layer being a stainless steel tube and the outer layer being a glass tube with metal corrugated tubes at both ends. The outer surface of the inner tube is coated with a selective absorption coating to maximize the absorption rate of direct solar radiation and minimize infrared re-radiation.

[0095] The circulating fan 4 is equipped with an adjusting damper 3 for adjusting the air volume of the circulating fan 4.

[0096] The ventilator 13 is provided with a hot air regulating damper 12 for regulating the air supply of the ventilator 13.

[0097] The circulating fan 4 and the ventilator 13 are substantially the same, and the names are only for distinguishing.

[0098] The circulating fan 4 or the ventilator 13 adopts a centrifugal fan, an axial fan, a screw fan or a vortex fan.

[0099] The solar hot air generator 7 is provided with necessary support rods or support frames to safely, stably and effectively fix the solar hot air generator, so as to avoid overturning accidents caused by strong wind and the like.

[0100] The inlet pipeline of the heat conducting oil pump 17 is provided with a filter for filtering solid impurity particles in the heat conducting oil in the inlet pipeline.

[0101] The heat conducting oil tank 1 in the heat conducting oil system plays the roles of oil gas separation, buffering, heat storage and storage, and needs to take heat preservation measures.

[0102] The heat conducting oil system is provided with necessary exhaust valves and safety valves.

[0103] The heat conducting oil tank 1 adopts a vertical structure, so that the system is conveniently and compactly arranged.

[0104] The circulating fan 4 or the ventilator 13 adopts a variable frequency speed regulation operation mode, so that the air supply and the air supply pressure can be flexibly adjusted when the sunlight and the heat supply change.

[0105] The absorption type refrigerators of the system can adopt measures such as back cooling, back heating and rectification.

[0106] Pipelines, instruments, valves, regulating bypasses and the like not mentioned in the application are matched with mature technologies in known organic heat carrier boilers, solar hot water engineering and absorption type refrigerators.

[0107] Parts not mentioned in the application such as safety accessories, interlocking protection devices and automatic control are matched with existing known technologies.

[0108] Although the present application has been disclosed with the above preferred embodiments, they are not intended to limit the present application, and any person skilled in the art can make various changes or modifications without departing from the spirit and scope of the present application, and the changes or modifications also belong to the protection scope of the present application. Therefore, the protection scope of the present application should be defined by the claims of the present application.

Claims

1. A domestic solar high temperature heat utilization system, characterized in that, It comprises: a solar heat collector (7) for heat recovery of solar energy, a heat conducting oil tank (1) as a heat storage heat accumulator, a heat conducting oil pump (17) for boosting and conveying heat conducting oil, a heat storage heat exchanger (14) for transferring heat of hot gas to heat conducting oil, an absorption refrigerator for absorbing heat of heat storage heat conducting oil to realize refrigeration cycle of refrigerant, gas from the heat storage heat exchanger (14) is returned to the solar heat collector (7) through a circulating fan (4) and a return air pipeline (5), and then is conveyed to the heat storage heat exchanger (14) after absorbing solar heat through heat collecting pipes in the solar heat collector (7), or gas from the heat storage heat exchanger (14) is returned to the solar heat collector (7) through the return air pipeline (5), and then is conveyed to the heat storage heat exchanger (14) through a ventilator (13) after absorbing solar heat through heat collecting pipes in the solar heat collector (7), thereby forming a solar heat recovery and heat release circulation loop of gas, heat conducting oil in the heat conducting oil tank (1) is boosted by the heat conducting oil pump (17) and sent to the heat storage heat exchanger (14) to exchange heat with hot air sent by the solar heat collector (7), and the heat conducting oil with increased temperature returns to the heat conducting oil tank (1) through a heat storage heat conducting oil return pipeline (34), thereby forming a heat storage circulation loop of heat conducting oil in the heat conducting oil tank (1), the absorption refrigerator comprises: a generator (23), a condenser (24), an evaporator (25), an absorber (21) and a solution pump (22), heat conducting oil in the heat conducting oil tank (1) enters the heat conducting oil pump (17) to be boosted, and the boosted heat conducting oil is conveyed to the generator (23) to heat refrigerant pair concentrated solution in the generator (23), and then returns to the heat conducting oil tank (1) through a return heat conducting oil pipeline (33), thereby forming a heat supply circulation loop of heat storage heat conducting oil in the heat conducting oil tank (1), high-temperature gaseous refrigerant (31) generated by heating refrigerant pair concentrated solution in the generator (23) through heat conducting oil enters the evaporator (25) through the condenser (24) and a throttling valve (F10) to absorb heat of cold medium sent by a cold unit (27), low-temperature gaseous refrigerant (32) generated by evaporation in the evaporator (25) returns to the absorber (21) to contact with refrigerant pair dilute solution sent from a dilute solution adjusting valve F9 to form refrigerant pair concentrated solution, and refrigerant pair concentrated solution in the absorber (21) returns to the generator (23) through the solution pump (22), thereby forming a refrigerant circulation loop of the absorption refrigerator, The cold medium from the cold unit (27) is pressurized by the cold medium booster (28) and then sent to the evaporator (25) to absorb the cold released by the liquid refrigerant in the evaporator (25), and the cold medium with reduced temperature is returned to the cold unit (27) for cooling, or the cold medium from the cold unit (27) enters the evaporator (25) to absorb the cold released by the liquid refrigerant in the evaporator (25), and the cold medium with reduced temperature is pressurized by the cold medium booster (28) and then returned to the cold unit (27) for cooling, thereby forming a cold medium charging and cooling cycle for the cold unit (27).

2. The household solar high-temperature heat utilization system according to claim 1, characterized in that The selected refrigerant pair of the absorption refrigerator includes ammonia-water, ammonia-sodium thiocyanate solution, dimethyl ether-ion liquid working medium, R134a-DMETG solution, or ammonia-ion liquid working medium.

3. The household solar high-temperature heat utilization system according to claim 1, characterized in that An oil heater (49) is provided. The oil heater (49) includes a heating element (50), and the heat-conducting oil in the heat-conducting oil tank (1) is pressurized by the heat-conducting oil pump (17), the pressurized heat-conducting oil is delivered to the oil heater (49), the heating element (50) is used for heating, and the heat-conducting oil from the oil heater (49) returns to the heat-conducting oil tank (1), thereby forming an energy release circuit of the heat storage heat-conducting oil in the heat-conducting oil tank (1).

4. The household solar high-temperature heat utilization system according to claim 1, characterized in that A heat supplement device (46) is provided. The heat supplement device (46) is arranged between the solar heat air generator (7) and the heat storage heat exchanger (14), and is used for supplementing the heat required by the heat-conducting oil tank (1) by using electric heating, compressed air heating, or fuel combustion heating; or the heat supplement device (46) is arranged between the heat-conducting oil pump (17) and the heat-conducting oil tank (1), and is used for supplementing the heat required by the heat-conducting oil tank (1).

5. The household solar high-temperature heat utilization system according to claim 1, characterized in that The heat collecting tube of the solar heat air generator (7) includes a through heat collecting tube (10), a heat pipe (72), or a single-through heat collecting tube.

6. The household solar high-temperature heat utilization system according to claim 5, characterized in that When the through heat collecting tube (10) is used for the solar heat air generator (7), the through heat collecting tubes (10) are connected in series, in parallel, or in series-parallel.

7. The household solar high-temperature heat utilization system according to claim 5, characterized in that When the heat pipe type heat collecting tube is used for the solar heat air generator (7), the outer surface of the heat pipe (72) in the vacuum glass tube (71) is coated with a selective absorption coating, the evaporation part of the heat pipe (72) is coated with the selective absorption coating, the part of the heat pipe (72) extending into the header (74) is a condensation part of the heat pipe (72), and the heat pipe (72) absorbs the heat of solar energy to heat the gas (75) entering the header.

8. The household solar high-temperature heat utilization system according to claim 5, characterized in that The solar hot air generator (7) adopts single-pass heat collecting pipe, which adopts three-pipe structure, including vacuum glass tube (71), inner tube (78), air inlet branch pipe (81), sealing element (79), air inlet main pipe (80) and header (74), the outer surface of the inner tube (78) of the single-pass heat collecting pipe is coated with selective absorption coating, the gas is pressurized into the air inlet main pipe (80) by the circulating fan (4), then is branched into the air inlet branch pipe (81), is turned into the inner tube (78) of the single-pass heat collecting pipe at the bottom of the inner tube (78), absorbs the heat of solar energy, the generated hot gas enters the header (74), forms hot air (76) output; or the gas enters the air inlet main pipe (80), then is branched into the air inlet branch pipe (81), is turned into the inner tube (78) of the single-pass heat collecting pipe at the bottom of the inner tube (78), absorbs the heat of solar energy, the generated hot gas enters the header (74), forms hot air (76) which is sucked out by the ventilator (13).

9. The household solar high-temperature heat utilization system according to claim 1, characterized in that, The circulating fan (4) or ventilator (13) adopts centrifugal, axial, screw or vortex fan.

10. The household solar high-temperature heat utilization system according to claim 3, characterized in that, The heat conducting oil in the heat conducting oil tank (1) drives the adsorption refrigerator to refrigerate as a heat source.

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