| 摘要 |
PROBLEM TO BE SOLVED: To prevent superheated refrigerant gas from being cooled excessively by a gas cooler, by providing a bypass pipe connecting a hot water inlet and a hot water outlet of the gas cooler, in heat pump equipment wherein a refrigerant discharged from a compressor is subjected to heat exchange with hot water and made to flow out as saturated gas to a condenser. SOLUTION: A refrigerant discharged from a compressor 1 passes through a gas cooler 2, a condenser 3, an expansion valve 4 and an evaporator 5 and returns to the compressor 1. On the occasion, hot water exchanges heat with a gas refrigerant in the gas cooler 2 and takes the latent heat thereof and then it exchanges heat with the gas refrigerant and takes the sensible heat thereof. In this case, an inlet pipe 1 and an outlet pipe 8 of the hot water of the gas cooler 2 are connected by a bypass pipe 9 having a bypass valve 10 interposed. The bypass valve 10 is opened and closed by a controller 13 so that a difference in detected temperature between a temperature sensor 11 detecting a refrigerant gas temperature at the outlet of the gas cooler 2 and a temperature sensor 14 detecting a refrigerant condensation temperature in the condenser 3 be constant, and thereby excessive cooling of superheated refrigerant gas is prevented. |
