| abstract |
REFRIGERATION APPLIANCE AND APPLICATION OF THE SAME. A refrigeration apparatus comprising a liquid pump for transporting fluid through a heating cycle, an external heat source for heating the fluid in the heating cycle, for example a solar heater directly connected to the heating cycle or connected via a heat exchanger heat, an expander with an expander inlet and an expander outlet, the expander inlet having a fluid connection to the external heat source to receive fluid in the gas phase to drive the expander expanding the fluid, a compressor with a compressor inlet and a compressor outlet, the compressor being driven by the expander to compress the service fluid from a low pressure compressor inlet gas to a high pressure compressor outlet gas, a first heat exchanger with a fluid connection to the compressor outlet and connected to the expander inlet for heat transfer from the high pressure compressor outlet gas to the fluid in the heating cycle, a second heat exchanger with a condenser to condense the service fluid from the expander for energy transfer to a second lower temperature fluid, eg ambient air, a third evaporator heat exchanger for evaporator to evaporate the service fluid from the second heat exchanger by transferring energy from a third fluid and to create a desired cooling effect on the third fluid. In particular, according to the invention, the first heat exchanger is connected as a heating cycle between the external heat source and the expander inlet. |