The heat exchanger's operation scheme was as follows.

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The heat exchanger for a bathhouse has become so popular that they began to make it in a handicraft way, using heat exchangers from boiler heating systems and specialized equipment, and even installing ingenious devices in cast iron and brick stoves.

The use of a heat exchanger for a sauna stove has significantly improved the sanitary conditions inside the steam room, and, what is important, almost unlimited water heating makes it possible to equip a full-fledged washing area. Now it is possible to take a shower almost without looking back at the supply of boiling water in the steam room.

Inside the furnace, usually in the firebox or on the outlet pipe, a heat mom data circuit is installed. Most often, this is a copper or steel tube 6-7 m long or a stainless steel container. For compactness, the pipe can be made in the form of a coil, a set of registers or a flat spiral.

Water enters the pipe from an external tank, usually by gravity or under a small pressure of a water tower. The flow rate is low, so the liquid has time to warm up to a relatively high temperature of 90 °C.

Important! The temperature and intensity of heating can be easily adjusted using a tap installed at the entrance or exit of the stove. Therefore, the heat exchanger built into the sauna stove heats water equally effectively both in winter and in summer.

The flexibility and efficiency of the heat exchanger has led to the sauna stove with a built-in heat exchanger becoming the main source of hot water for country or summer cottage recreation. Moreover, in winter, the stove with a heat exchanger can be used to heat the room.