METHOD OF ENLARGING THE HEAT EXCHANGE SURFACE OF A TUBULAR ELEMENT

摘要

1527875 Tubular heat exchangers MASCHINENFABRIEK BREDA VOORHEEN BACKER EN RUEB BV 18 Dec 1975 [24 Dec 1974] 51984/75 Heading F4S [Also in Division B3] The heat exchanger surface of a tubular element 31 is enlarged by a length of material 32 previously folded corrugated or dimpled which is clamped to the tube by at least one second length 33 of flexible material which is wound in a stretched state around the material 32 and secured by a rim or end to the tube. A copper foil or soldering paste may be previously applied around the tube which is heated after the material lengths are positioned. A heat exchanger utilizing a bundle of such tubes is described but is the subject of a divisional application.