Heat exchanger with coil of inserted tubes - has tubes set with parallel axes and walls abutting at inner radius and has adjuster for equalising water temperature

摘要

The tubes (2-4) are helically coiled and fitted with connecting unions at the ends. The tube axes are parallel and their inner radii abut each other. For the central washing water duct and the outer heating water duct, the tubes form a sickle-shaped cross-section with the duct cross-sectional surfaces in the ratio from outside to inside in the coil of 1:1.2:0.7. A branch at the tube ends contains an adjuster for equalising the heating water temp. ADVANTAGE - Increased efficiency by high speed and turbulence and rapid equalising of water flow and temp.