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Thermal performance in a conventional fireplace and in an inset appliance
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Orientador(es)
Resumo(s)
The objective of this study is to compare the performance of the equipment
currently employed in the domestic heating with firewood, the conventional
fireplace and the inset appliance with close firedoors. For such, it was followed
the European Standard EN13229:2001/A2:2004. Efficiency and heat output is
determined and the major heat losses that penalize the appliance performance are
identified and calculated.
Tests in laboratory were developed in two inset appliances, and tests
in situ
in one
conventional fireplace. One of the appliances uses only staging as primary air,
and the other only grate air
In inset appliances, with a heat output near 10 kW, the average efficiency varies
between 67% and 73%, while in a conventional fireplace that value lies at 30%.
In all these devices the major losses take place as sensible heat in the flue gases,
23% to 30 % in inset appliances and above 50% in a conventional fireplace.
The second most important heat loss happens by chemical losses in the flue gases.
It takes values near 17% in a conventional fireplace and may be disregarded in an
inset appliance.
Descrição
Palavras-chave
Lareiras Aquecimento
Contexto Educativo
Citação
9th Conference on Energy for a Clean Environment (CLEANAIR). - Póvoa de Varzim, 2-5 July 2007. - 18 p