Rotary regenerative heat exchanger

摘要

This invention provides a heat exchanger (2) comprising an elongate heat exchange element (4). The heat exchange element (4) has a substantially cylindrical structure with a first end and a second end. The length of the element (4) is greater than the diameter. A plurality of elongate flow paths extend between the first end and the second end. A first inlet (8) and a second outlet (14) are disposed in the first end and a first outlet (10) and a second inlet (12) are disposed in the second end. The first inlet (8) and first outlet (10) define a first flow path and the second inlet (12) and second outlet (14) define a second flow path. The heat exchanger is provided with a means (16, 18) for rotating the cylindrical structure and rotation of the cylindrical structure (4) moves the elongate flow paths from the first flow path to the second flow path.