Heat pump system for directly evaporating and absorbing solar heat collection and utilizing natural energy

Abstract

The invention discloses a heat pump system for directly evaporating and absorbing solar heat collection and utilizing natural energy. A compressor air exhausting mouth is connected with the D end of a four-way reversing valve, a compressor air suction mouth is connected with the S end of the four-way reversing valve, the C end of the four-way reversing valve is connected with a condenser inlet, a condenser outlet is connected with a throttle valve, and outlet pipeline of the throttle valve is divided into two branches; a throttle valve on the first branch is communicated with an inlet section of a second evaporation coil through a second cut-off valve, and the outlet end of the second evaporation coil is connected with the E end of the four-way reversing valve; a throttle valve on the second branch is communicated with a first evaporation coil inlet through a third cut-off valve, the first evaporation coil is arranged in a solar energy vacuum heat-collecting tube assembly, a first evaporation coil outlet is communicated with a first cut-off valve, and a first cut-off valve outlet is connected with the E end of the four-way reversing valve. The heat pump system for directly evaporating and absorbing solar heat collection and utilizing natural energy has the advantages of being capable of utilizing solar energy to supply heat for an evaporator and avoid the frosting of the evaporator, and improving system operating efficiency.

Description

technical field [0001] The invention relates to a heat pump system, in particular to a heat pump system for solar heat collection, direct evaporation absorption and natural energy utilization. Background technique [0002] In recent years, with the rapid development of my country's economy, people's awareness of environmental protection has continued to increase, which has brought new opportunities for the development of renewable energy, and the improvement of people's quality of life, thereby increasing the demand for heating in winter, and the use of air source heat pumps The application is also more and more extensive. However, due to the low winter temperature in North China and the high air humidity in the Yangtze River Basin, frosting often occurs on the evaporator during the operation of the air source heat pump, and the defrosting cycle is short, which seriously affects the efficiency of the air source heat pump system. Electric heating defrosting, hot gas bypass de...

AI Technical Summary

Problems solved by technology

However, due to the low winter temperature in North China and the high air humidity in the Yangtze River Basin, frosting often occurs on the evaporator during the operation of the air source heat pump, and the defrosting cycle is short, which seriously affects the efficiency of the air source heat pump system.

Usually electric heating defrosting, hot gas bypass defrosting and reverse cycle defrosting are used, but the effect is not obvious

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