CN212806099U - Solar energy and gas coupled multi-energy complementary energy supply system - Google Patents

Solar energy and gas coupled multi-energy complementary energy supply system Download PDF

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CN212806099U
CN212806099U CN201922348672.2U CN201922348672U CN212806099U CN 212806099 U CN212806099 U CN 212806099U CN 201922348672 U CN201922348672 U CN 201922348672U CN 212806099 U CN212806099 U CN 212806099U
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energy
gas
solar
water
heat
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邓波
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Shanghai Aerospace Smart Energy Technology Co ltd
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Shanghai Aerospace Smart Energy Technology Co ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

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  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

The utility model discloses a solar energy and gas coupled's complementary energy system of multipotency mainly includes: the gas inlet of the gas internal combustion generator is connected with a gas network, the electric energy output end of the gas internal combustion generator is connected with an internal power grid, and the inlet and the outlet of circulating cooling water of the gas internal combustion generator are connected with a heat storage water tank; an inlet and an outlet of a circulating heat medium of the solar heat collector are connected with the heat storage water tank; the heat storage water tank is provided with a water inlet and a water outlet of domestic hot water which are connected with domestic hot water users, a water outlet and a water inlet of heat supply which are connected with heat supply users, and a water inlet and a water outlet which are connected with a circulating water port of the absorption refrigerator; the power input end of the absorption refrigerator is connected with an internal power grid; the internal grid is connected to an external grid and to an internal electrical load. The utility model discloses utilize heat storage water tank to form complementary advantage with solar energy and the multi-energy coupling of gas, have functions such as refrigeration, heating, supply hot water, can all-weather operation, have good social.

Description

Solar energy and gas coupled multi-energy complementary energy supply system
Technical Field
The utility model belongs to the technical field of the energy supply system, concretely relates to solar energy and gas coupled's complementary energy supply system of multipotency.
Background
With the increasing severity of energy and environmental problems, solar energy has been widely used in various fields such as hot water, heating, refrigeration, and electricity as a pollution-free, easily available, and inexhaustible energy. Although the global "energy transition" measures are being promoted, fossil fuels are still dominant in global energy consumption, so how to effectively integrate renewable energy sources and conventional energy sources is important.
The solar air conditioner is realized in 2 ways: firstly, performing light-electricity conversion, and then driving a conventional compression type refrigerator to refrigerate by using electric power; and secondly, the solar energy is directly used for driving to refrigerate. For the former, the solar power generation is expensive, the conversion efficiency is low, and the practicability is poor. Thus, solar air conditioning technology generally refers to thermal driven air conditioning technology.
At present, the solar air conditioner mainly adopts a lithium bromide absorption refrigeration system, and a lithium bromide single-effect unit and a double-effect unit are the mainstream of the market. The main reason is that the solar energy is the most efficient of the solar energy refrigeration system, and is one of the most mature systems at present.
In the application and research of solar-driven absorption refrigeration, although a lot of experience is accumulated at present, a lot of problems still remain to be solved. For example, how to improve the efficiency, the continuity and the stability of the operation of the whole system needs to be further researched and solved.
Among them, the solar water heater has the advantages of energy saving, environmental protection, economy, etc., and has become the most common water heating mode. However, when the service performance is completely affected by weather, and the illumination is insufficient or the arrangement area of the solar heat collector is insufficient, an auxiliary heat source is required to be arranged to ensure the hot water supply requirement.
The gas distributed energy system takes natural gas as a raw material and realizes gradient utilization of energy through combined supply of cold, heat and electricity. If the gas distributed system is adopted to produce hot water separately, the system economy is not high due to the factors of high gas price, complicated power generation internet access procedure, high unit generating capacity system cost and the like, and a large amount of conventional energy is consumed. If the solar heating system is used alone, the use of the load is difficult to guarantee due to the limitation of the arrangement place of the heat collector and the cost of the system, and the use of the solar heating system is limited in a non-fine day (especially in a winter). The solar heating system and the fuel gas distributed system are organically combined, so that the defects of the solar heating system and the fuel gas distributed system can be overcome, and all-weather continuous and stable water supply is realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a solar energy and gas coupling's complementary energy system of multipotency and operation method thereof to overcome the energy form that prior art exists and is unified, can not carry out the accurate distribution of the energy and match with the load, can not realize the most genuine complementary of multipotency, the operation strategy is complicated, economic nature and energy-conservation nature scheduling problem not obvious.
The utility model aims at realizing through the following technical scheme:
the utility model discloses a solar energy and gas coupled's complementary energy system of multipotency, a serial communication port mainly includes: the system comprises a gas internal combustion generator, a heat storage water tank, a solar heat collector and an absorption refrigerator;
the gas inlet of the gas internal combustion generator is connected with a gas network, the electric energy output end of the gas internal combustion generator is connected with an internal power grid, and the inlet and the outlet of circulating cooling water of the gas internal combustion generator are respectively connected with the heat storage water tank; an inlet and an outlet of a circulating heat medium of the solar heat collector are respectively connected with the heat storage water tank; the heat storage water tank is provided with a water inlet and a water outlet of domestic hot water which are connected with domestic hot water users, and is also provided with a water outlet and a water inlet for supplying heat which are connected with heat supply users; a water inlet and a water outlet are also arranged to be connected with a circulating water port of the absorption refrigerator; the power input end of the absorption refrigerator is connected with an internal power grid; the internal power grid is connected with the external power grid and the internal electric load, when the system is insufficient in power, the external power grid is used for getting power, and when the system is surplus in power, the external power grid is used for supplying power.
Compared with the prior art, the utility model, there is following benefit:
the utility model organically combines the fuel gas distribution with the solar heat collector, has the functions of refrigeration, heating and hot water supply, can operate in all weather, and improves the utilization rate and the economical efficiency of the solar air conditioning system; the requirement of heating is met in winter, the requirement of refrigerating is met in summer, and living hot water is guaranteed to be provided all weather; the system has high automation degree of operation, the solar energy and gas distributed generation waste heat resource is unified into hot water and stored in the water tank, the load is unified and accurately allocated for operation, the strategy is simple, and the true multi-energy complementation is realized; has good social benefit, economic benefit and environmental benefit.
Drawings
Fig. 1 is a schematic structural diagram of a solar energy and gas coupled multi-energy complementary energy system of the present invention;
FIG. 2 is a system diagram of the winter heating, domestic hot water and power generation modes of the present invention;
FIG. 3 is a system diagram of the winter heating and power generation mode of the present invention;
FIG. 4 is a system diagram of the summer refrigeration, domestic hot water and power generation mode of the present invention;
FIG. 5 is a system diagram of the cooling and power generation modes in summer according to the present invention;
FIG. 6 is a system diagram of the transition season life hot water and power generation mode of the present invention;
in the figure: 1-gas internal combustion generator, 2-heat storage water tank, 3-solar heat collector, 4-absorption refrigerator, 5-gas network, 6-internal power network, 7-external power network, 8-domestic hot water user, 9-heat supply user, 10-internal electric load.
Detailed Description
It should be understood by those skilled in the art that the present embodiment is only for illustrating the present invention and is not used as a limitation of the present invention, and that changes and modifications to the embodiment may be made within the scope of the claims of the present invention.
The utility model discloses a solar energy and gas coupled's complementary energy system of multipotency mainly includes: the system comprises a gas internal combustion generator 1, a heat storage water tank 2, a solar heat collector 3 and an absorption refrigerator 4;
the gas inlet of the gas internal combustion generator 1 is connected with a gas network 5, the electric energy output end of the gas internal combustion generator is connected with an internal power grid 6, and the inlet and the outlet of circulating cooling water of the gas internal combustion generator are respectively connected with the heat storage water tank 2; an inlet and an outlet of a circulating heat medium of the solar heat collector 3 are respectively connected with the heat storage water tank 2; the heat storage water tank 2 is provided with a water inlet and a water outlet of domestic hot water which are connected with a domestic hot water user 8, a water outlet and a water inlet of heat supply which are connected with a heat supply user 9, and a water inlet and a water outlet which are connected with a circulating water port of the absorption refrigerator 4; the power input end of the absorption refrigerator 4 is connected with an internal power grid 6; the internal grid 6 is connected with an external grid 7 and an internal electrical load 10;
the heat storage water tank 2 supplies domestic hot water to the domestic hot water users 8, supplies heat energy load to the heat supply users 9, supplies water load for air-conditioning refrigeration or air-conditioning heating to the absorption refrigerator 4, and supplies one or more than two of the domestic hot water, the heat energy load and the water load according to the requirement.
Further, the heat storage water tank 2 is one of a layered integrated heat storage water tank, a temperature split type heat storage water tank and a split integrated heat storage water tank, or other equivalent heat storage water tanks.
Further, the solar heat collector 3 is a trough type solar heat collector, a plate type solar heat collector or other equivalent solar heat collectors.
Further, the circulating heat medium of the solar heat collector 3 is heat conducting oil, water or other heat medium suitable for the solar heat collector 3; when the heating medium is water, the solar heat collector 3 can be directly connected with the heat storage water tank 2; when the heating medium is other heating media, an intermediate heat exchanger must be added between the solar heat collector 3 and the hot water storage tank 2.
Further, the absorption refrigerator 4 is one of a single-effect lithium bromide absorption refrigerator, a double-effect lithium bromide absorption refrigerator, an ammonia absorption refrigerator, a single-energy lithium bromide absorption refrigerator and a multi-energy complementary lithium bromide absorption refrigerator or other equivalent absorption refrigerators; non-toxic and harmless lithium bromide water solution or ammonia water is used as a medium, and the method belongs to environment-friendly working media.
The utility model discloses an operation method of solar energy and gas coupling's complementary energy supply system of multipotency, through heat storage water tank 2 and gas internal combustion generator 1 carry out multipotency coupling with solar energy, gas and electric wire netting, including following step: the gas internal combustion generator 1 burns gas to generate electric power, the electric power is merged into an internal power grid 6, and the power generation waste heat is sent into the heat storage water tank 2 through circulating cooling water to be stored; the solar heat collector 3 converts solar energy into heat energy, and the heat energy is sent into the heat storage water tank 2 to be stored; the heat storage water tank 2 provides domestic hot water and heat energy for downstream users and also provides circulating water for the absorption refrigerator 4; the absorption refrigerator 4 provides cold energy for users; when the system power is insufficient, the internal power grid 6 gets power from the external power grid 7, and when the system power is surplus, the internal power grid 6 supplies power to the external power grid 7.
The method of the utility model is based on the actual engineering situation and the economical efficiency, and can preferentially use the solar photo-thermal system as the basic load and the gas distributed system as the peak load; and a gas distributed system can be used as a base load preferentially, and a solar photo-thermal system is used as a peak load.
Example 1
A system diagram of winter heating, domestic hot water and power generation modes as shown in fig. 2. The gas internal combustion generator 1 burns gas to generate electric power, the electric power is merged into an internal power grid 6, and the power generation waste heat is sent into the heat storage water tank 2 through circulating cooling water to be stored; the solar heat collector 3 converts solar energy into heat energy, and the heat energy is sent into the heat storage water tank 2 to be stored; the hot water storage tank 2 provides domestic hot water and supplies heat energy for downstream users.
Example 2
A winter heating and power generation mode system diagram as shown in fig. 3. The gas internal combustion generator 1 burns gas to generate electric power, the electric power is merged into an internal power grid 6, and the power generation waste heat is sent into the heat storage water tank 2 through circulating cooling water to be stored; the solar heat collector 3 converts solar energy into heat energy, and the heat energy is sent into the heat storage water tank 2 to be stored; the hot water storage tank 2 supplies heat energy to downstream users.
Example 3
A summer cooling, domestic hot water and power generation mode system diagram as shown in fig. 4. The gas internal combustion generator 1 burns gas to generate electric power, the electric power is merged into an internal power grid 6, and the power generation waste heat is sent into the heat storage water tank 2 through circulating cooling water to be stored; the solar heat collector 3 converts solar energy into heat energy, and the heat energy is sent into the heat storage water tank 2 to be stored; the heat storage water tank 2 provides domestic hot water for downstream users and also provides circulating water for the absorption refrigerator 4; the absorption chiller 4 provides cooling energy to the user.
Example 4
Such as the summer cooling and power generation mode system diagram shown in fig. 5. The gas internal combustion generator 1 burns gas to generate electric power, the electric power is merged into an internal power grid 6, and the power generation waste heat is sent into the heat storage water tank 2 through circulating cooling water to be stored; the solar heat collector 3 converts solar energy into heat energy, and the heat energy is sent into the heat storage water tank 2 to be stored; the heat storage water tank 2 provides circulating water for the absorption refrigerator 4; the absorption chiller 4 provides cooling energy to the user.
Example 5
A transition season domestic hot water and power generation mode system diagram as shown in fig. 6. The gas internal combustion generator 1 burns gas to generate electric power, the electric power is merged into an internal power grid 6, and the power generation waste heat is sent into the heat storage water tank 2 through circulating cooling water to be stored; the solar heat collector 3 converts solar energy into heat energy, and the heat energy is sent into the heat storage water tank 2 to be stored; the hot water storage tank 2 provides domestic hot water for downstream users.

Claims (6)

1. A solar energy and gas coupled multi-energy complementary energy system is characterized by mainly comprising: the system comprises a gas internal combustion generator (1), a heat storage water tank (2), a solar heat collector (3) and an absorption refrigerator (4);
the gas inlet of the gas internal combustion generator (1) is connected with a gas network (5), the electric energy output end of the gas internal combustion generator is connected with an internal power grid (6), and the inlet and the outlet of circulating cooling water of the gas internal combustion generator are respectively connected with the heat storage water tank (2); an inlet and an outlet of a circulating heat medium of the solar heat collector (3) are respectively connected with the heat storage water tank (2); the heat storage water tank (2) is provided with a water inlet and a water outlet of domestic hot water, which are connected with domestic hot water users (8), a water outlet and a water inlet of heat supply are connected with heat supply users (9), and a water inlet and a water outlet are connected with a circulating water port of the absorption refrigerator (4); the power input end of the absorption refrigerator (4) is connected with an internal power grid (6); the internal power network (6) is connected to an external power network (7) and to an internal electrical load (10).
2. The solar and gas coupled multi-energy complementary energy system according to claim 1, wherein the hot water storage tank (2) supplies domestic hot water to the domestic hot water users (8), supplies thermal energy loads to the heat users (9), supplies water loads for air-conditioning refrigeration or air-conditioning heating to the absorption chiller (4), and supplies one or more than two of them according to the demand.
3. The solar and gas coupled multi-energy complementary energy system according to claim 1, wherein the heat storage water tank (2) is one of a layered integrated heat storage water tank, a temperature split heat storage water tank, and a split integrated heat storage water tank.
4. Solar and gas coupled multi-energy complementary energy system, according to claim 1, characterized in that said solar collector (3) is a trough solar collector or a plate solar collector.
5. The solar and gas coupled multi-energy complementary energy system according to claim 1, wherein the circulating heat medium of the solar heat collector (3) is heat conducting oil or water.
6. The solar and gas coupled multi-energy complementary energy system according to claim 1, wherein the absorption chiller (4) is one of a single-effect lithium bromide absorption chiller, a double-effect lithium bromide absorption chiller, an ammonia absorption chiller, a single-energy lithium bromide absorption chiller, and a multi-energy complementary lithium bromide absorption chiller.
CN201922348672.2U 2019-12-24 2019-12-24 Solar energy and gas coupled multi-energy complementary energy supply system Active CN212806099U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110986385A (en) * 2019-12-24 2020-04-10 上海航天智慧能源技术有限公司 Solar energy and gas coupled multi-energy complementary energy supply system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110986385A (en) * 2019-12-24 2020-04-10 上海航天智慧能源技术有限公司 Solar energy and gas coupled multi-energy complementary energy supply system

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