Gas heating seems like an exhausted topic to you? No matter how it is. The condensing boiler is an example of how science can surprise you where you least expect it.
Its work can be divided into two stages:
Stage 1: the boiler burns gas
The released heat heats up the water. For boilers of standard design, this stage is the only one, and they lose a significant part of the heat with flue gases.
Stage 2: the boiler extracts the latent heat of condensation
Flue gases pass through a complex heat exchanger, cool down and water vapor condenses from them. This generates additional heat, which also heats the water.
Where is the water in the flue gases from?
Natural gas is predominantly methane. With the complete combustion (oxidation) of one methane molecule, two water molecules and one carbon dioxide molecule are formed.
Efficiency of condensing boilers
Compared to standard boilers, condensing boilers generate 11% more heat. They have a higher efficiency than chimney and turbocharged models, and the lowest level of harmful emissions - 20 times less than the current standards in Ukraine.
Condensing models are more compact, as their power is 4 times higher than that of conventional boilers. This is due to the special design of the heat exchanger and the more efficient gas combustion method.
Note: "How to choose a boiler: which is better and more economical?"
