Heating system with closed circuit - uses hermetically sealed liq. circuit built into normal circuit

摘要

The fully-hermetic heating system uses a hermetically sealed circuit built into the normal one and also using solar energy or a heat pump. Alternatively the entire system can be hermetically sealed. The hermetically sealed circuit comprises a heat-exchanger (5) with an expansion vessel (7). There is a first vessel or boiler (1) connected to a four-way mixing valve (4) one line from which passes through the heat exchanger (5) back to the boiler. There are two lines passing from the valve (4) to a heating device (2); there is a circulating pump (3) in one of these lines.