How does a boiler work and general principle of a boiler

Posted by Akaa Plumbing and Heating on October 15th, 2019

A boiler is also more commonly known as central heating. It feeds the radiants of the hearth and, also, produces, most often, the domestic hot water. Regardless of the fuel chosen, the Boiler installation in Harrow is roughly similar.

The general principle of a boiler

A boiler transmits heat, calories, water or heat transfer fluid depending on the model, which will, in turn, be transmitted to heat emitters (radiators, heated floors ...) and water for heating. the production of domestic hot water. In some cases, the Boiler installation in HA1 produce only heat, but no domestic hot water. To produce this heat, the boiler produces a combustion, realized thanks to a fuel ( gas , fuel oil , wood , or pellets). Water or coolant circulates in the boiler, around and in the firebox. The temperature of this liquid rises as it winds closer and closer to the fireplace, and then once at the right temperature, the liquid continues its course towards the heat emitters. It is also used to heat water for sanitary purposes, either instantaneously or by accumulating in a balloon.

Variations according to boiler systems

The basic operation remains the same for all boilers. It is somewhat different depending on the types of boilers. Thus, for a condensing boiler, the performance is increased, thanks to the additional use of combustion fumes usually lost during the evacuation of combustion gases. These contain water. This steam condenses in the boiler, allowing increasing the temperature of the coolant, in addition to conventional combustion, and thus improves the efficiency for a reduction in energy consumption. When we talk about boiler at low temperature, the principle remains the same, except that the temperature reached is lower. A sucker Boiler installation in HA2 takes air not in the room where it is located, but directly outside. The boiler itself is therefore hermetic and is not connected to a conventional flue, but to a double concentric duct, coming out on the facade. The air is thus taken from the outside of the duct and the smoke from the inside. 

The operation of the condensing gas boiler

The operation of the condensing gas boiler is based on the same principle as a traditional boiler and also makes it possible to take advantage of all the energy produced during the combustion of the gas. In a conventional boiler, the central heating water circuit is warmed by burning natural gas. The Boiler installation in HA3 takes advantage of the energy contained in the flue gases. The fumes emitted during the combustion of natural gas contain water vapor. The latter condenses, releasing heat. The return water from the heating circuit heats up with this energy. The evacuation of the water released during the condensation (the condensates) is done by the sewage network.

The condensing gas boiler can be used in many cases

Whether attached to the floor or wall, a condensing gas boiler can be connected to all hot water heating systems. For a house with a basement or a garage, the boiler on the ground is indicated. The wall-mounted boiler is particularly compact and has the advantage of freeing the floor surface. Being able to be equipped with a hot water tank, the condensing gas boiler is generally supplied by the town gas network, but can also be supplied by means of a tank.