A HEAT PUMP, A COMBINED HEATING AND COOLING SYSTEM, A POWER GENERATION SYSTEM AND A SOLAR COLLECTOR

摘要

A heat pump (1100) has a working fluid circuit (1) provided with a receiver (2), a pump (5) for circulating the working fluid around the working fluid circuit and an ejector pump (11). A first flow path (3) between the receiver (2) and motive fluid inlet (12) includes a first heat exchanger (7) for vaporising the working fluid. A second parallel flow path (4) includes a second heat exchange means (10) adapted to transfer heat to the working fluid, and a working fluid expansion means (9) upstream of the second heat exchange means (10) adapted to reduce the temperature and pressure of the working fluid before it enters the second heat exchanger (10). A condenser (15) transfers heat from the working fluid to a third heat transfer fluid (18). Variations of the system are disclosed, as well as combined heating and cooling systems including such a heat pump. A solar collector (1700) is also disclosed.