Pad-shaped heat exchanger for use in fire control plant, has flexible plastic tubes through which heating and cooling medium flows, where tubes are coated and sealed completely by diffusion sealed film

摘要

The heat exchanger has flexible plastic tubes (1) with an outer diameter of about 2-5 millimeter, where the heating and cooling medium flows through the tubes. The tubes are coated and sealed completely by diffusion sealed films (2,3). The films form a continuous connection between the neighboring tubes. The films cover the region between the neighboring tubes, and the films consist of two layers, which lie together.