2. Comparison between standard and condensing boilers

2.1 Latent heat recovery

Latent heat removed by flue gases

With a conventional atmospheric boiler, a significant proportion of the so-called latent heat is evacuated by the flue gases, causing the temperature of the combustion products to rise sharply, to around 150°C.

Recovered latent heat

The use of a condensing gas boiler recovers a very large proportion of this latent heat; this energy recovery has the effect of considerably reducing the temperature of the combustion gases, while limiting polluting gas emissions.

The water vapour contained in the flue gases condenses on the heat exchanger, which recovers its so-called latent...

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Comparison between standard and condensing boilers

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Efficiency of condensing boilers

Bibliography

Also in our database

Les techniques du chauffage. - [TBA 2 600]...

Standards and norms

Water-tube boilers and auxiliary systems – Part 15: Acceptance tests - NF EN 12952-15 - 05-04
Fired Steam Generators - ASME PTC 4 - 2008
Code for acceptance tests on stationary steam generators of the power station type - BS 2885 - 1974

Regulations

Decree no. 2010-1269 of October 26, 2010 on the thermal characteristics and energy performance of buildings

Arrêté du 26 octobre 2010 relatif aux caractéristiques thermiques et aux exigences de performance énergétique des bâtiments nouveaux et des parties nouvelles de bâtiments (Decree of October 26, 2010 on the thermal characteristics and energy performance requirements of new buildings and new parts...