[en] The model in this paper was developed to predict thermal performances of gas-fired condensing boilers. The structure of the developed model is similar to the one of a conventional boiler with a main counterflow gas-water heat exchanger, at which a condensing heat exchanger is added. Prior to the second heat exchanger, the exhaust gas are converted into equivalent wet air.
The condensing heat exchanger is divided into smaller parts and each part is simulated by a cooling coil model currently used in HVAC simulation. Several tests have been performed in steady-state regime on a household gas-fired boiler whose nominal output is 24 kW. The experimental results are compared to the model results and the results are discussed.
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 :
SIMULATION MODEL OF A GAS-FIRED CONDENSING BOILER AT FULL LOAD OPERATION IN STEADY-STATE REGIME
Publication date :
May 2010
Event name :
ASME-ATI-UIT 2010 Conference on Thermal and Environmental Issues in Energy Systems
Event place :
Sorrento, Italy
Event date :
du 16 mai 2010 au 19 mai 2010
Audience :
International
Main work title :
ASME-ATI-UIT 2010 Conference on Thermal and Environmental Issues in Energy Systems
Peer reviewed :
Peer reviewed
Funders :
DGTRE - Région wallonne. Direction générale des Technologies, de la Recherche et de l'Énergie [BE]
