CN211177500U - Solar energy integration comprehensive utilization system - Google Patents
Solar energy integration comprehensive utilization system Download PDFInfo
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- CN211177500U CN211177500U CN201921549551.8U CN201921549551U CN211177500U CN 211177500 U CN211177500 U CN 211177500U CN 201921549551 U CN201921549551 U CN 201921549551U CN 211177500 U CN211177500 U CN 211177500U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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Abstract
The utility model discloses a solar energy integrated comprehensive utilization system, which comprises four loops, namely a solar heat collector loop, a cooling loop, a heating loop, a living hot water supply loop and a solar power generation part; the utility model discloses the system is through heating, cooling, power supply, the diversified comprehensive utilization of hot water integration to solar energy, and furthest's improvement solar energy utilization ratio, improvement unit efficiency and system efficiency, assurance system operating stability, saving heat collecting area, heat source step utilize to realize energy saving, environmental protection, the purpose that reduces greenhouse gas and discharge, full play solar technology's advantage in sustainable development. In addition, the integration design of the system meets the requirements of users, saves the investment cost for installing a plurality of sets of equipment, and is beneficial to application and popularization.
Description
Technical Field
The utility model belongs to clean energy solar energy comprehensive utilization field, concretely relates to solar energy integration comprehensive utilization system.
Background
In the building industry, conventional air conditioning systems based on vapor compression refrigeration technology account for approximately 50% of primary energy consumption and for CO240% of the isothermal chamber gas discharge. Therefore, the development of a green, environment-friendly and energy-saving air conditioning system has important significance for solving the problems of energy shortage and environmental pollution. Among the solutions of renewable clean energy, the solar heating and cooling technology is widely concerned due to its characteristics of energy saving, high efficiency and environmental friendliness.
In the technical field of solar heating and cooling at present, low-temperature heat collectors such as flat plate heat collectors and vacuum tube heat collectors are mostly adopted, and single-effect lithium bromide absorption refrigerators are used in combination. The heat collection temperature range of the low-temperature heat collector is about 80-100 ℃, and the solar energy utilization rate is limited; the single-effect lithium bromide absorption refrigerator has low efficiency, and COP can only reach about 0.7; in order to meet the load requirements of users, the heat collection area of the existing scheme is large, certain requirements are set for a site in practical application, and the application and development of a solar heating and cooling technology are limited. Meanwhile, in order to ensure the continuous and stable operation of the system, energy storage measures or standby energy should be reasonably considered, which increases the complexity of the system to a certain extent.
Although the popularity of the solar domestic hot water supply field is high, the system only realizes a single hot water supply function, the utilization rate of solar energy is very limited, and the single hot water supply system is not economical considering that the cost of a solar heat collector is high.
In addition, the solar photo-thermal utilization and the photoelectric utilization in the conventional system are independent, and the complementary application of the solar photo-thermal utilization and the photoelectric utilization still has an exploitation space.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem in the prior art, the utility model provides a solar energy integration comprehensive utilization system solves among the prior art solar energy heating cooling system function singleness, to the low problem of solar energy utilization ratio.
The technical scheme of the utility model is that:
a solar energy integrated comprehensive utilization system comprises four loops, namely a solar heat collector loop, a cooling loop, a heating loop, a domestic hot water supply loop and a solar power generation part, wherein the four loops are a circuit;
the solar heat collector is connected with the groove type solar heat collector in a loop way, the high-pressure generator of the double-effect absorption type water chilling unit, the flat heat exchanger for heat supply and the flat heat exchanger for domestic hot water;
the solar power generation part comprises a solar cell panel, a storage battery and an inverter;
the cooling loop is connected with an evaporator and a cooling tail end of the double-effect absorption type water chilling unit and used for cooling a user through circulating chilled water;
the heating loop is connected with the flat heat exchanger for heating, the high-pressure generator and the heating tail end, and the users are heated through circulating hot water.
The domestic hot water supply loop is connected with the flat heat exchanger for supplying domestic hot water, the high-pressure generator, the heat storage water tank, the domestic hot water device and an external tap water source.
The high-pressure generator of the double-effect absorption type water chilling unit is provided with a burner. The fuel in the combustor is gas or natural gas.
The cooling loop is provided with a chilled water circulating pump, and an indoor temperature sensor can monitor indoor temperature and transmit a signal to the chilled water circulating pump so as to control the chilled water circulating pump to start or stop according to indoor environment temperature.
There are temperature and water level sensor in the heat storage water tank, can monitor temperature and water level, give solenoid valve and life hot water circulating pump with the signal transfer, and then according to the opening and shutting of temperature and water level demand control circulating pump and the switching of valve.
An electric heating device is arranged in the heat storage water tank.
The heat conducting medium in the groove type solar heat collector is heat conducting oil.
The utility model discloses beneficial effect:
the system adopts the groove type solar heat collector, has strong light gathering capacity, small heat loss and high heat efficiency, can realize the heat collection temperature of 250 ℃, has large solar heat utilization potential and high solar energy utilization rate, and saves the heat collection area; the COP of the driving double-effect lithium bromide absorption type water chilling unit can reach about 1.42, is twice that of a single-effect lithium bromide absorption type water chilling unit, can obviously improve the energy efficiency of the system, saves the primary energy consumption and reduces CO2Isothermal chamber gas emission; the burner with the self-provided high-pressure generator in the absorption water chilling unit is used as a backup heat source, so that the running stability of the system can be ensured when the solar energy is insufficient, the influence of the solar energy system caused by the intermittent and unstable changes of the solar irradiance is reduced, other backup energy sources are not required to be additionally added, and the complexity of the system is simplified; two flat plate heat exchangers are connected in series, the advantage of high heat collection temperature of the groove type solar heat collector is fully exerted through energy cascade utilization, the requirement of heating and cooling is met, meanwhile, domestic hot water is heated, and the energy utilization rate is improved; the solar cell panel is arranged on the basis of the groove type solar energy, the solar energy is utilized for generating electricity, self-use is carried out, and power is supplied to a tracking system, a control system, a double-effect absorption type water chilling unit, an emergency electric heating device in a heat storage water tank and all water pumps of the groove type solar heat collectorThe electric energy is effectively saved, and the energy utilization rate is improved; the integration design of the system meets the requirements of users, saves the investment cost for installing a plurality of sets of equipment, and is beneficial to application and popularization. To sum up, the system is through heating, cooling, power supply, the diversified comprehensive utilization of mode to solar energy of heat supply water integration, can full play solar energy technology advantage in sustainable development.
Drawings
Fig. 1 is a flow chart of a solar integrated comprehensive utilization system.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, which are to be understood as illustrative only and not limiting the scope of the invention.
Fig. 1 is the utility model discloses a solar heating, cooling, power supply, hot water supply system flow chart based on slot type solar collector and economic benefits and social benefits absorption formula cold water machine group, the primary equipment includes solar cell panel 1, slot type solar collector 2, supplies heat with flat plate heat exchanger 3, supplies domestic hot water with flat plate heat exchanger 4, economic benefits and social benefits lithium bromide absorption formula cold water machine group 5, heat storage water tank 6, cooling end 7, heating end 8, domestic hot water device 9. Besides, the figure also shows an electric heating device 10, a temperature and water level sensor 11, an indoor temperature sensor 12, a storage battery 13 and an inverter 14, and for convenience of description, a high-pressure generator 15, an evaporator 16 and a burner 17 equipped with the high-pressure generator in the double-effect absorption chiller are also marked. V1-V9 are valves, P1-P4 are circulating pumps. The heat conducting medium in the groove type solar heat collector is heat conducting oil. The fuel in the combustor can be gas or natural gas.
The system comprises four loops, namely a solar heat collector loop, a cooling loop, a heating loop, a domestic hot water supply loop and a solar power generation part.
The solar heat collector is connected with the groove type solar heat collector 2, the high-pressure generator 15 of the double-effect absorption type water chilling unit, the heat supply flat plate heat exchanger 3 and the domestic hot water supply flat plate heat exchanger 4 in a loop mode, the produced heat energy provides a driving heat source for the double-effect absorption type water chilling unit in summer, and the combustor 17 can be used as a standby heat source when solar energy resources are insufficient; in winter, the flat plate heat exchanger 3 for heat supply directly supplies heat to users; the whole year domestic hot water supply can be realized by the flat plate heat exchanger 4 for domestic hot water supply.
The solar power generation part comprises a solar cell panel 1, a storage battery 13 and an inverter 14, and electric energy generated by the system can be stored in the storage battery to provide electric energy for a tracking system, a control system, a double-effect absorption type water cooling unit, an electric heating device in a heat storage water tank, various water pumps and the like of the groove type solar heat collector.
The cooling loop is connected with the evaporator 16 and the cooling end 7 of the double-effect absorption type water chilling unit, and cooling is supplied to users through circulating chilled water. The indoor temperature sensor 12 may monitor the indoor temperature, transmit a signal to the chilled water circulation pump P3, and control it to start or stop according to the indoor ambient temperature.
The heating loop is connected with the flat plate heat exchanger 3 for heating, the high pressure generator 15 and the heating terminal 8, and heats the user through circulating hot water. Circulating hot water takes the heat transfer of heat conduction oil in the heat supply flat plate heat exchanger 3 as the priority, only when solar energy resource is not enough, just opens high pressure generator branch road to the combustor heats as reserve heat source, guarantees the stability of system operation, satisfies user's demand. The indoor temperature sensor 12 may monitor the indoor temperature, transmit a signal to the chilled water circulation pump P3, and control it to start or stop according to the indoor ambient temperature.
The domestic hot water supply loop is connected with the flat heat exchanger 4 for supplying domestic hot water, the high-pressure generator 15, the heat storage water tank 6, the domestic hot water device 9 and an external tap water source. The water in the water tank is preferred to be subjected to heat exchange with heat conduction oil in the flat plate heat exchanger 4 for supplying domestic hot water, and only when solar energy resources are insufficient, the high-pressure generator branch is opened to heat the water by taking the burner as a standby heat source, so that the stability of system operation is ensured, and the user requirements are met. There are temperature and water level sensor 11 in the heat storage water tank, can monitor temperature and water level, give solenoid valve V6 and life hot water circulating pump P2 with the signal transfer, and then according to the opening and shutting of temperature and the opening and shutting of water level demand control circulating pump. The electric heating device 10 in the water tank can provide emergency heating of the water in the water tank when neither the solar collector nor the burner is working properly.
The specific working principle is as follows:
when cooling is needed in summer, the groove type solar heat collector 2 operates at medium temperature, and the heat conducting oil can be heated to 100-250 ℃ to provide heat energy for the evaporation of the lithium bromide dilute solution in the high-pressure generator 15. V3 opened and P1 and P3 started. The cooling is supplied to the user by the chilled water circulation. When the system starts to operate, the temperature of the heat conduction oil is low, the V1 is closed firstly, the heat conduction oil is heated in the heat collector 2 in a circulating mode, and when the temperature of the heat conduction oil is increased to meet the operation temperature of the absorption type water chilling unit 5, the V1 is opened. When the solar irradiance is poor or the solar energy generated by the heat collector 2 is insufficient to drive the absorption water chilling unit 5 in rainy days, the burner 17 is started to provide a heat source for the unit. The burner can be externally connected with fuel gas or natural gas.
When heating is needed in winter, the groove type solar heat collector 2 operates at low temperature, heat conducting oil is heated to be less than 100 ℃, and heat is supplied to users through the heat supply flat plate heat exchanger 3. V3 is closed, V2 is opened, P1 and P4 are started, and a three-way valve V7 flat plate heat exchanger branch is opened, so that circulating hot water is heated through the heating flat plate heat exchanger 3 to heat a user. Similar to summer, when the system starts to operate, the temperature of the heat conduction oil is lower, the V1 is closed firstly, the heat conduction oil is heated in the heat collector 2 in a circulating mode, and when the temperature of the heat conduction oil is increased to meet the heating requirement, the V1 is opened. When the solar irradiance is poor or in rainy days, the heat exchange through the flat plate heat exchanger 3 cannot reach the heating temperature, the three-way valve V7 high-pressure generator branch is opened, and the burner is started to heat the heating hot water. The burner can be externally connected with fuel gas or natural gas.
In the aspect of supplying domestic hot water, when the temperature of the hot water storage tank 6 is too low, the sensor 11 sends a signal to start the P2, the V2 is opened at the moment, the three-way valve V5 flat plate heat exchanger branch is opened, and the water in the water tank is heated by heat-conducting oil through the flat plate heat exchanger 4 for supplying domestic hot water. When the tank temperature is too high, the sensor 11 signals that P2 is turned off, and V2 is also turned off if no heating is required. When the water level in the water tank drops to a set value, the sensor 11 sends a signal, the V6 is opened, and tap water is filled into the water tank. When the solar irradiance is poor or the temperature of the domestic water cannot be reached through heat exchange of the flat plate heat exchanger 4 in rainy days, a three-way valve V5 high-pressure generator branch is opened, and a burner is started to heat the domestic hot water. When the solar thermal collector and the burner can not work normally, the emergency electric heating device 10 in the water tank is started to heat the water in the water tank, so that the requirements of users are met.
The solar power generation part comprises a solar cell panel 1, a storage battery 13 and an inverter 14, solar energy is converted into electric energy, the electric energy generated by the system can be stored in the storage battery 13, and the electric energy can be provided for a tracking system, a control system, a double-effect absorption type water cooling unit, an electric heating device in a heat storage water tank, various water pumps and the like of the groove type solar heat collector.
Through modeling analysis and rough estimation, compared with the traditional direct-fired machine heat and cold supply system, the system saves energy by at least 21.3 percent once all the year around; annual CO2The reduction of the emission amount reaches at least 18.8%, and the method has obvious energy-saving and emission-reducing effects and has important significance for sustainable development and application of solar energy.
To sum up, this patent the system is through the diversified comprehensive utilization of heating, cooling, power supply, the mode of heat supply water integration to solar energy, and furthest's improvement solar energy utilization ratio, improvement unit efficiency and system efficiency, assurance system operating stability, saving heat collecting area, heat source cascade utilization to realize energy saving, environmental protection, reduce the purpose of greenhouse gas emission, the advantage of full play solar technology in sustainable development. In addition, the integration design of the system meets the requirements of users, saves the investment cost for installing a plurality of sets of equipment, and is beneficial to application and popularization.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (7)
1. The system is characterized by comprising four loops, namely a solar heat collector loop, a cooling loop, a heating loop, a domestic hot water supply loop and a solar power generation part, wherein the four loops are a circuit;
the solar heat collector loop is connected with the groove type solar heat collector (2), a high-pressure generator (15) of the double-effect absorption type water chilling unit, a heat supply flat plate heat exchanger (3) and a domestic hot water supply flat plate heat exchanger (4);
the solar power generation part comprises a solar panel (1), a storage battery (13) and an inverter (14);
the cooling loop is connected with an evaporator (16) and a cooling tail end (7) of the double-effect absorption type water chilling unit, and cooling is supplied to a user through circulating chilled water;
the heating loop is connected with the flat plate heat exchanger (3) for heating, the high-pressure generator (15) and the heating tail end (8), and heats a user through circulating hot water;
the domestic hot water supply loop is connected with a flat heat exchanger (4) for supplying domestic hot water, a high-pressure generator (15), a heat storage water tank (6), a domestic hot water device (9) and an external tap water source.
2. The integrated solar energy comprehensive utilization system according to claim 1, wherein the high-pressure generator (15) of the double-effect absorption chiller is provided with a burner (17).
3. The integrated solar energy comprehensive utilization system as claimed in claim 2, wherein the fuel in the combustor (17) is gas or natural gas.
4. The solar integrated comprehensive utilization system of claim 1, wherein the cooling loop is provided with a chilled water circulating pump (P3), and an indoor temperature sensor (12) can monitor indoor temperature and transmit a signal to the chilled water circulating pump (P3) to control the start or stop of the chilled water circulating pump according to indoor ambient temperature.
5. The integrated solar energy comprehensive utilization system according to claim 1, wherein a temperature and water level sensor (11) is arranged in the hot water storage tank (6), and can monitor water temperature and water level, transmit signals to an electromagnetic valve (V6) and a domestic hot water circulating pump (P2), and further control the on/off of the circulating pump and the on/off of the valve according to the water temperature and water level requirements.
6. The integrated solar energy comprehensive utilization system according to claim 1, wherein an electric heating device (10) is arranged in the hot water storage tank (6).
7. The integrated solar energy comprehensive utilization system according to claim 1, wherein the heat conducting medium in the groove type solar heat collector (2) is heat conducting oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921549551.8U CN211177500U (en) | 2019-09-17 | 2019-09-17 | Solar energy integration comprehensive utilization system |
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| CN201921549551.8U CN211177500U (en) | 2019-09-17 | 2019-09-17 | Solar energy integration comprehensive utilization system |
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| CN211177500U true CN211177500U (en) | 2020-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567186A (en) * | 2019-09-17 | 2019-12-13 | 天津大学 | solar energy integration comprehensive utilization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567186A (en) * | 2019-09-17 | 2019-12-13 | 天津大学 | solar energy integration comprehensive utilization system |
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Granted publication date: 20200804 Termination date: 20210917 |