Abstract: Each sheath tube of a bayonet type heat exchanger is provided with spacer means secured thereto and extending inwardly from the inner wall surface thereof to define an opening through which the respective bayonet tube freely extends at least generally coaxially with the sheath tube, the surface of the spacer means adjacent the bayonet tube being smoothly contoured to substantially minimize damage to the bayonet tube from vibration.

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.