Patent ID: 6988545
Filing Date: 2006-01-24
Classification: F26B,F28D,F28F,Y02P

Abstract:
1. A heat exchanger system, relating to transferring waste heat from a stream of exhaust air produced in a dryer to a stream of fresh air directed to flow into the dryer, comprising: a) at least one heat transferor structured and arranged to substantially convectively transfer the waste heat to the stream of fresh air, b) wherein said at least one heat transferor comprises at least one array structured and arranged to array substantially vertical, substantially mutually parallel plurality of heat-transfer conduits adapted to internally conduct segregated portions of the stream of exhaust air, c) wherein at least one heat-transfer conduit of said plurality of heat-transfer conduits comprises at least one thermally-conductive conduit wall structured and arranged to conduct heat from the segregated portions of the stream of exhaust air to the stream of fresh air, d) wherein said at least one heat-transfer conduit comprises at least one substantially square cross-section; and e) wherein said at least one substantially square cross-section is oriented to have one corner of said at least one substantially square cross-section facing the general direction of flow of the stream of fresh air through said at least one heat transferor.