HEAT EXCHANGER USING AIRFLOW OVER PIPES BETWEEN PLATES

摘要

An arrangement for exchanging heat between a system of pipes which conduct a fluid heat exchange medium and a platelike heat exchange member. The arrangement is particularly intended for use in connection with air temperature regulating means such as solar heaters and waste heat systems which operate at a small temperature differential between the temperature of the plate-like heat exchange member and the fluid medium. Mutually facing surfaces of two substantially parallel material layers form a plenum. One of these surfaces comprises one side of the plate-like heat exchange member. The pipes which conduct the fluid medium are arranged parallel to one another in the plenum and are spaced apart from each other in a longitudinal direction of the plenum. A stream of gas or air is arranged to flow through the plenum. Gaps are formed on opposite sides of the pipes by spacer means. These gaps extend along a considerable part of the outer surface of each pipe and the gaps are dimensioned to cause the air or gas to move in a laminate flow through the gaps.