Method of utilizing energy sources by pre-heater and re-heater

摘要

The pre-heater (1) is parallel with the re-heater (2) in the cold connecting pipe of a three-way mixer. The pre-heater is in the form of an independent condensing boiler or block-type thermal power unit, whereas the re-heater is an independent standard heat-generator. The three-way mixer (3) is controlled by a regulator (4) on the servo motor (5). Depending on the position of the mixer and on the heat supply in the pre-heater, a maximum energy yield is achieved via the pre-heater and a minimum heat use through the re-heater.