Heat transfer apparatus for heat pumps
 A refrigeration and heating system in which an absorber (97), condenser (100) and recuperator are placed (107) in a single module (270) and are provided with tube-in-tube or tube-in-cylinder construction with fluted inner tubes. A general purpose, divided-flow, tube-in-cylinder, heat transfer device (400) is used to reduce the pressure drop in the circulating fluid. 
Columbia Gas of Ohio, Inc.
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F25B Y02A F28F Y02B F28D F25B
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Richard N. Howard C. Stephen E. Kevin R. F. Bert
Christensen Meacham, Jr. Petty McGahey Cook