Abstract: The heat exchanger is constructed in various embodiments such that the crevice duct between the outermost coil of tubes and the jacket defining the crevice duct is maintained at a constant width during operation. In some embodiments, the outermost coil tubes is carried on the jacket to maintain a constant width of the crevice duct. In other embodiments, a separate set of cooling tubes in provided to maintain the jacket cool. In other embodiments, the amount of heat drawn off through the outermost coil of tubes is increased.

Abstract: The expansion pipe loops which connect the tubes of the heat exchanger to the discharge lines are suspended via double-armed levers which are movably secured at the ends to the mounting system and anchoring system. The points on the pipe loops which are connected to the fulcrum of the respective levers as well as the fulcrums are chosen so as to render the stresses in the pipe loops as low as possible and approximately equal on both sides of the pivots. Pairs of levers with an interconnecting support beam are used to suspend a plurality of the pipe loops in common.