Distributed fuel gas type complementary solar energy utilization combined cooling heating and power system

Abstract

The invention relates to a distributed fuel gas type complementary solar energy utilization combined cooling heating and power system. The system comprises a distributed fuel gas system, a solar photovoltaic photo-thermal system, a household solar water heating system and a lithium bromide absorption type refrigerating system, wherein the solar photovoltaic photo-thermal system and the household solar water heating system are connected with inlet water of a heat storage water tank, the heat storage water tank is connected with a cold water inlet of a heat exchanger, a hot water outlet of the heat exchanger is connected with a lithium bromide refrigerator, and a hot air inlet of the heat exchanger is connected with a fume exhaust pipeline of a waste heat boiler in the distributed fuel gas system. Hot water generated by a photo-thermal system in the solar photovoltaic photo-thermal system and the household solar water heating system flows into the heat storage water tank and is stored inthe heat storage water tank, and the hot water flows into the heat exchanger and is heated by exhaust fume of the distributed fuel gas waste heat boiler to reach the heat source temperature of the lithium bromide refrigerator, so that refrigeration is realized; and the system makes full use of heat generated by the system, the electric quantity generated by the system can be used by the system orconnected to a grid, efficient gradient utilization of clean energy is truly realized, and the system has a very strong utilization prospect.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of clean energy, and relates to distributed gas, solar photovoltaic photothermal system, household solar hot water system and lithium bromide absorption refrigeration system, especially a distributed gas complementary solar combined cooling, heating and power system . Background technique [0002] In the context of the current rapid development of distributed clean energy, solar energy plays an important role in the distributed energy system due to its universality and sustainability. Its main utilization forms are photovoltaic power generation and household solar water heating system. As the conversion efficiency of photovoltaic power generation is less than 20%, a large amount of solar energy is not used, and this part of the heat is absorbed by the solar panel, and the temperature of the solar panel increases, resulting in a further decrease in the photoelectric conversion efficiency (...

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Problems solved by technology

[0003] However, whether it is a solar photovoltaic thermal system or a household solar hot water system, in summer, when the demand for hot water is not large, the solar thermal collection system is basically idle, and the solar photovoltaic thermal system cannot be brought in time due to the cooling medium. The temperature of the battery board makes the performance of the battery board unsatisfactory

At the same time, the priority is to ensure the power output of the battery panel. The output temperature of the solar photovoltaic thermal cooling medium is generally around 50°C. The heat source of this quality has few uses and cannot meet the heat source temperature requirements of the absorption refrigeration system; in winter, the solar photovoltaic thermal The temperature quality of hot water produced by the system and household solar water heating system cannot meet the needs of users; and the solar energy itself has unstable characteristics, which restrict the development of distributed solar energy technology

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