| 摘要 |
<p>PURPOSE: A heat pump for producing high-efficiency energy by adjusting evaporation pressure in a severe cold period is provided to maintain uniform evaporation pressure by easily using solar heat and geothermal heat through a composite heat exchanger. CONSTITUTION: A heat pump for producing high-efficiency energy by adjusting evaporation pressure comprises an auxiliary heating body, a heat exchanger, an electronic expansion valve, and a four-way valve. The auxiliary heating body is used as an auxiliary heating source in a severe cold period. The electronic expansion valve is connected to the heat exchanger and proportionally controls evaporation pressure. The four-way valve circulates a refrigerant.</p> |
