| 摘要 |
A space cooling or heating system comprises an air turbine 11, an air compressor 13, both driven by an electric motor catering for the difference between the input of the latter and the output of the former, two heat exchangers 3, 5 for series flow therethrough to a space 6 of a fluid to be cooled or heated, wherein a flow of stale air from the space 6 is split in two parts, one part passing through the first heat exchanger 3, the second part passing either through the turbine 11, as shown. when cooling is to be performed or through the compressor 13 when heating is to be performed, the stale air thus either cooled or heated passing through the second heat exchanger 5 and being then restored to atmospheric pressure by the turbomachine not taking part in the cooling or heating process. As shown, said fluid is fresh air. Alternatively, a closed water circuit may pass through heat exchangers 3, 5 and the space 6. The system may additionally be adapted to heat water for use in the space 6. The system may be modified for selective heating or cooling by the provision of valves at the in lets and outlets of the turbine 11 and compressor 13. <IMAGE> |
