Seasonal thermal storage solar low-temperature thermal electricity generation composite ground-source heat pump system

Abstract

The invention discloses a seasonal thermal storage solar low-temperature thermal electricity generation composite ground-source heat pump system. The system consists of a solar thermal collector, a ground heat exchanger, a first heat exchanger, a second heat exchanger, a third heat exchanger, a booster pump, an expansion machine, a generator, a ground-source heat pump cold and hot water unit, an electrical storage device and the like, wherein the first heat exchanger, the second heat exchanger, the booster pump, the expansion machine and the generator form an organic Rankine cycle low-temperature thermal electricity generation device; the solar thermal collector collects solar energy all the year round, in a non-heat supply period, the collected solar heat is used as a heat source of the low-temperature thermal electricity generation device by the first heat exchanger, cold is obtained from soil by a thermal storage series soil heat exchanger and is used as a cold source of the low-temperature thermal electricity generation device by the second heat exchanger, and the heat of condensation is stored in the soil. The system is applicable to civil architectures and office buildings in a severe cold area, and is particularly applicable to regions, which are far away from a centralized heating heat pipeline, are strict in atmospheric environment requirements and have frequent outage, of the severe cold area.

Description

technical field [0001] The invention relates to the field of heat pump heating and air conditioning and the field of solar low-temperature thermal power generation, and specifically relates to a seasonal heat storage solar low-temperature thermal power generation compound ground source heat pump system, which can be used as a cold and heat source for heating and air-conditioning systems of civil buildings and public buildings in severe cold regions , especially suitable for building objects in severe cold areas that are far away from the central heating network pipelines and have strict requirements on the atmospheric environment and frequent power outages. Background technique [0002] Our country has a vast territory, and most of the areas are in severe cold and cold areas. Buildings in these areas need to use heating and air conditioning systems. The rapid development of urban buildings has brought great development to the application of ground source heat pump systems in ...

AI Technical Summary

Problems solved by technology

Solar energy is inexhaustible and inexhaustible energy. It is a good choice to use the solar heat collected by solar collectors to supplement the heat of the soil, and at the same time intermittently use it as a heat source for heating. Although the heating process only runs the circulation pump , but it still consumes a certain amount of electric energy. If a power outage occurs, the water pump will not work normally, which will often cause the temperature of the solar collector to be too high and cause the pipe to burst, reducing the safety of the system.

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