Patent ID: 6817185
Filing Date: 2004-11-16
Classification: F02B,F02G,Y02E,Y02T

Abstract:
An engine comprising:a positive displacement isothermal air compressor (1) provided with a liquid spray to spray liquid into the air as it is compressed so that the compression is substantially isothermal; a combustion chamber (4) in which the compressed air is expanded to generate power; means (7, 9, 11) to feed the compressed air from the isothermal compressor to the combustion chamber; a separator (2) to remove liquid from the compressed air upstream of the combustion chamber; a primary heat exchanger (3) for transferring heat from exhaust gas from the combustion chamber to compressed air upstream of the combustion chamber; a precompressor (21, 27) to compress the air upstream of the isothermal compressor; and means (30, 32) to feed the air from the precompressor to the isothermal compressor; characterised by a secondary heat exchanger (31, 45) provided to transfer heat recovered from a part of the engine to the compressed air from the isothermal compressor (1) upstream of the primary heat exchanger (3).