Indirect heating boiler (definition)

Indirect heating boiler — is a water heating device that uses heat from an external source, such as a heating system (boiler) or a solar collector, instead of a built-in heating element. It is designed to provide hot water supply in residential and commercial buildings or is used for low-temperature heating, such as in underfloor heating.

Main components and operating principle of an indirect heating boiler:

1. Heat exchanger - the main element of the boiler through which the coolant passes (for example, hot water or coolant from the heating system). It transfers heat to the water in the boiler, heating it to the required temperature.
2. Water tank - a container in which hot water is stored. The tank is usually made of steel with an anti-corrosion coating and thermal insulation to minimize heat loss.
3. Thermostat — a device for monitoring the water temperature in the boiler. The thermostat regulates the flow of coolant to maintain the set water temperature.
4. Connections for heating medium and water — pipes for the inlet and outlet of the coolant from the heating system and connection to the water supply network for the intake and supply of hot water.

Indirect heating boiler functions:

• Water heating — the main function of the boiler is to heat water for domestic needs, such as taking a shower, washing dishes and doing laundry.
• Efficient use of energy - the use of an external heat source, such as a heating system, allows you to use energy more efficiently, since one source is used for heating rooms and heating water.
• Reducing the load on the heating system — an indirect heating boiler allows you to evenly distribute the heat load between water heating and space heating.

Advantages of an indirect heating boiler:

• High efficiency - by using an existing heating system, indirect heating boilers provide more efficient use of energy.
• Large volume of hot water - thanks to the large reservoir, such boilers can provide a significant amount of hot water, which is especially useful in houses with a large number of residents.
• Long service life - indirect heating boilers, as a rule, have a longer service life due to the absence of a built-in heating element, which can wear out over time.

Indirect heating boiler is widely used in heating and hot water supply systems of residential and commercial buildings, providing reliable and efficient hot water supply. Thermal energy transmitted via heat exchange circuit.