Heat pump system with vapour heater - raising temp. of vapour from pump sufficiently to drive vapour motor which then drives heat pump

摘要

The system has a heat pump (2) using ambient heat to produce refrigerant vapour at increased pressure and temp. A vapour heater (3) heats this vapour to a still higher temp. (70 deg. C) and higher pressure (8 bars) such that the compressed vapour volume produced by the heat pump is adequate in terms of pressure and temp. for driving a vapour motor (5) that drives the heat pump. The vapour is additionally heated by primary energy such as gas or oil fuel. The vapour from the vapour motor is then used for heating. A heat exchanger is used to heat the compressed vapour from the heat pump.