| 摘要 |
PROBLEM TO BE SOLVED: To effectively utilize beat possessed by a specific heat collection heat source fluid for production of purposed warm heat. SOLUTION: A heat pump is switchable between a main heat collection operation. Both of first and second vaporizers 1, 2 connected to a common compressor 4 are forced for corresponding collected heat source fluids W, A to achieve heat absorption action and an auxiliary heat collection operation. The second vaporizer 2 is forced for the corresponding heat collection heat source fluid A to absorb heat in the condition where refrigerant passage in the first vaporizer 1 is interrupted. In the heat pump, there is provided control means 8 where the main heat collection operation of first time T1 and the auxiliary heat collection operation of second time T2 obtained by subtracting the first time T2 from set cycle time Ts are alternately repeated, and where a time ratio T1/T2 of the first time T1 and the second time T2 is altered in response to heat absorption conditions in the first vaporizer 1. |
