Air source heat pump system based on soil seasonal heat storage defrosting and solar intermittent utilization and using method thereof

Abstract

The invention discloses an air source heat pump system based on soil seasonal heat storage defrosting and solar intermittent utilization and a using method thereof, and belongs to the field of designand manufacturing of refrigeration heat pump air conditioning systems. The system is composed of a refrigerant loop, a soil heat storage loop, an air conditioner cold and hot water loop and a solar hot water loop, and the working principle is clear. Condensation waste heat discharged during refrigeration operation of the air source heat pump in summer is stored through soil in a cross-season mode,when frosting occurs during heating operation of the air source heat pump in winter, heat stored in the soil is taken out to be used for defrosting, the problem that heat comfort is reduced due to the fact that heat is absorbed from a room through traditional reverse circulation defrosting is solved, the defrosting energy consumption is reduced, and the defrosting effect is improved, hot water prepared by solar energy is intermittently utilized for heating, and when the air source heat pump cannot normally supply heat due to defrosting, uninterrupted heating is achieved.

Description

technical field [0001] The invention belongs to the field of design and manufacture of refrigerating heat pump air-conditioning systems, and relates to an air source heat pump system and its use method, in particular to an air source heat pump system and its use method based on soil cross-season heat storage and defrosting and solar energy intermittent utilization . Background technique [0002] Air source heat pumps are widely used as cold and heat sources for building air conditioning due to their advantages of both cooling and heating, energy saving, environmental protection, and flexible installation, and have been actively promoted in the "coal to clean energy" project in northern my country. However, there is a problem of frost on the surface of the outdoor heat exchanger during the heating operation of the air source heat pump in winter. Due to the formation and growth of the frost layer, the heat transfer resistance between the refrigerant and the air and the air flo...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the traditional reverse cycle defrosting absorbs heat from the room, which leads to the reduction of thermal comfort, and proposes an air source heat pump system based on soil heat storage and defrosting across seasons and intermittent utilization of solar energy and its use method. The condensed waste heat discharged by the heat pump during cooling operation in summer is stored across seasons through the soil. When frost occurs during the heating operation of the air source heat pump in winter, the heat stored in the soil is taken out for defrosting, which can solve the shortcomings of the existing technology. Save defrosting energy consumption and improve defrosting efficiency. At the same time, when the air source heat pump cannot provide normal heating due to defrosting, the hot water produced by solar energy can be used intermittently for heating, so that the air source heat pump can achieve uninterrupted heating during defrosting

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