Heat exchanger fabricated from polymer compositions.

摘要

A panel heat exchanger comprises a generally planar panel having a pair of relatively thin unitary outer walls (26) formed from a composition of a thermoplastic polymer, especially a polyamide. The walls (26) which have thickness of less than 0.7 mm, are bonded together to form a labyrinth of fluid passages (34) between the walls. The passages (34) extend between inlet and outlet means (30) and occupy a substantial proportion of the area of the panel. The heat exchangers may be used in automobiles.