[en] Nowadays, condensing technology is widely used in space heating. This paper presents a model that predicts thermal performance of condensing boilers. The structure of the model is similar to the one of a conventional boiler model with a dry heat exchanger at which a wet heat exchanger is added to simulate the heat recovered by condensation. Tests have been performed on two household 24 kW condensing boilers (gas- and oil-fired boilers). The experimental results are compared to the simulated values. According to the results, the model correctly predicts the thermal efficiency of the boiler. Indeed, predicted values are in good agreement with measured values (if one takes into account the measurements uncertainties).
Disciplines :
Energy
Author, co-author :
Makaire, Danielle ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Thermotechnique
Ngendakumana, Philippe ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Thermotechnique
Language :
English
Title :
Thermal performance of condensing boilers
Publication date :
July 2010
Number of pages :
11
Event name :
32nd TLM - IEA ENERGY CONSERVATION AND EMISSIONS REDUCTION IN COMBUSTION
Event place :
Nara, Japan
Event date :
26 juillet 2010 au 29 juillet 2010
Audience :
International
Funders :
DGTRE - Région wallonne. Direction générale des Technologies, de la Recherche et de l'Énergie