Community Research and Development Information Service - CORDIS

Environmental benign air cycle heat pumps and refrigeration systems

Air cycle systems have been available for many years, but have not yet benefited from recent technological developments. This project has successfully introduced these innovations into air cycle systems to increase their energy efficiency and thus improve their cost competitiveness against CFC vapour compression systems.

The use of the air cycle for refrigeration and air conditioning is environmentally benign, unlike CFC vapour compression systems. The use of air as a refrigerant is based on the principle that when gas expands, its final temperature at the new pressure is much lower and can be used for cooling purposes. Conversely when air is compressed, its temperature increases and it can be used as a heating medium. Air cycles have been used in most refrigeration and heating applications, such as building heat pumps, air conditioning systems and industrial refrigeration systems. But have not yet, in most cases, benefited from technological advances in design, equipment and components which have been developed in other industries but can be adapted to these systems. The aim of this project was to develop energy efficient and cost competitive (in terms of price and operating costs), CFC-free air cycle heat pumps, air conditioning and refrigeration systems through technology transfer

Reported by

TNO Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek
Lean van Westenenk 501
7300 Apeldoorn
Netherlands
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