Abstract: A heat exchange assembly which utilizes a central source of a heated fluid, such as steam, and serves as a hot fluid distribution center for a plurality of satellite chambers removably disposed on a supporting rack around the source. Each satellite chamber, arranged in series with the others, receives the hot fluid at one end from the central source and discharges condensate at the other end. Longitudinal pipes in the satellite chamber of the cluster carry the fluid to be processed through the chambers. The series piping permits flow to be reversed in the satellite chambers to even out the deterioration of each chamber.

Abstract: Thin liners and tubes of special metals and alloys such as tantalum bonded to substrates or mounted in support plates of metallurgically dissimilar metals and alloys such as mild steel by an elastomer such as a silicone or fluoro elastomer. Also a shock absorbent mounting of tubes telescoped into heat exchanger tubes of special metals by elastomer cushions interposed between the tubes.