In order to meet the demand of air source heat pump central heating in winter, this study uses a new working medium to raise the heating temperature of air source heat pump to more than 90 ℃. Firstly, the mathematical model of high-temperature air source heat pump is established to simulate the system, and then a high-temperature air source heat pump test bench is built to verify the simulation results at ambient temperatures of 0, 5 and 10 ℃, respectively. When the inlet temperature of hot water is 80 ℃, the actual COP of the system is 5.9%, 5.3% and 1.7% lower than the theoretical results, respectively. Compared with the existing technology, the heating temperature of the air source heat pump is increased by more than 40 ℃, so it has a good market application prospect and promotion significance.
Key words
air source heat pump /
high temperature heat pump /
cascade heat pump /
COP
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References
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