A heat exchanger a heat exchanger element therefor and a method of assembling a heat exchanger element

摘要

A heat exchanger (1) comprises impeller means (41) through which, in use, supply fluid and exhaust fluid is forced past a heat exchanger element (23). An output shaft (39) of the impeller motor (37) is operative to drive a first impeller (43) of the impeller means (41) to force the supply fluid in a first direction through the heat exchanger (1), the motor output shaft (39) being further operative to drive a second impeller (47) of the impeller means (41) to force the exhaust fluid through the heat exchanger (1) in another direction to that of the supply fluid. The heat exchanger element (23) comprises at least one duct (25) sealingly mounted on the heat exchanger (1) using only the engagement of the material of the duct (25) with the material of the heat exchanger (1).