Underground soil cold-heat balance system suitable for soil source heat pump in extremely-cold region

Abstract

The invention discloses an underground soil cold-heat balance system suitable for a soil source heat pump in an extremely-cold region. The underground soil cold-heat balance system comprises a solar heat collection system, a soil source heat pump system, an indoor heating system, a first electric valve and a second electric valve. The solar heat collection system comprises a solar heat collector, an energy storage water tank and a solar circulation water pump. The soil source heat pump system comprises a soil source heat pump host, a soil source heat exchanger and a soil source circulation water pump. The indoor heating system comprises a heating circulation water pump and heating terminal equipment. According to the underground soil cold-heat balance system suitable for the soil source heat pump in the extremely-cold region, cold-heat balance of underground soil can be achieved, meanwhile, the operating energy efficiency of the soil source heat pump system is improved, and stable, safe and efficient operating of the soil source heat pump system is achieved.

Description

technical field [0001] The invention relates to an underground soil cold and heat balance system suitable for soil source heat pumps in extremely cold regions. Background technique [0002] At present, the traditional resources and energy in the world have shown an increasingly tense situation, and the price of energy has also continued to rise. The ground source heat pump system has been widely used in the field of HVAC due to its high efficiency and energy saving characteristics. [0003] In extremely cold regions, in the process of heating buildings in winter, the soil source heat pump system continuously absorbs heat from the soil; in summer, there is generally no cooling, and the soil source heat pump system has no heat dissipation to the soil, which will cause constant underground soil temperature in the long run. The decline will cause the cold and heat imbalance of the underground soil temperature, resulting in the decline of the energy efficiency of the ground sourc...

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Problems solved by technology

[0003] In extremely cold regions, in the process of heating buildings in winter, the soil source heat pump system continuously absorbs heat from the soil; in summer, there is generally no cooling, and the soil source heat pump system has no heat dissipation to the soil, which will cause constant underground soil temperature in the long run. The decline will cause the cold and heat imbalance of the underground soil temperature, resulting in the decline of the energy efficiency of the ground source heat pump system and unstable operation, which will greatly affect the economic and environmental benefits of the society.

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