Heat exchanger SE

For transferring thermal energy from a primary to a secondary water circuit, as part of a solar thermal system;
approx. 120 cm long copper pipe spiral in a clear plastic container, removable lid with silicone stopper for measuring the water temperature;
Copper is a very good heat conductor, the heat transfer is very effective due to the material and the long length of the coil
Copper tube: Da= 6 mm
Filling volume: approx. 400 ml
Dimensions: approx. 85 x 85 x 120 mm
Mass: approx. 295 g