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In vapour-compression cycles (VCC) and more specifically in heat pumps, mechanical work is supplied to the compressor for increasing the pressure of the evaporated refrigerant. Heat is rejected in the condenser (effective heating at heating mode), for the condensation of the refrigerant, which is then expanded in a throttle valve (no power produced), in order to decrease its pressure, resulting to ...

The main objective of the project is the development of several reliable, safe, high efficiency and high capacity heat pumps working with the two most promising natural refrigerants: Hydrocarbons andCO2, together with a set of improved components and auxiliary devices adequate for the efficient and safe use of the two refrigerants.The project aims to reach a higher efficiency (10-20% SPF improveme ...