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A Study on the Development of Low NOx Condensing Gas Boiler(II) -Design of Heat Exchanger and Performance of Boiler-
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 Title & Authors
A Study on the Development of Low NOx Condensing Gas Boiler(II) -Design of Heat Exchanger and Performance of Boiler-
Lee, Chang-Eon; Geum, Seong-Min; Jeong, Yeong-Sik;
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This paper describes a design study of heat exchanger assembly to be used for low NOx condensing gas boiler. In this study, specifications of each heat exchanger components(upper and lower fin-type HEX, coil-type HEX, baffle) were investigated experimently by using model apparatus and analytical model, and comprehensive performances of the pilot gas boiler were examined. As a result, the boiler efficiency for heating and hot-water reached 90% and 94%, respectively. NOx and CO emission are less than 50ppm and 200ppm (00% basis), respectively, which are very improved results than those of conventional bunsen-type boiler. But it is considered that supplementary investigations necessary for CO emission improvement and optimum design with boiler capacity.
Condensing Boiler;Cylindrical Heat Exchanger;Low NOx Emission;Heating Efficiency;Baffle;
 Cited by
콘덴싱 가스보일러용 원통형 다공버너의 최적화 연구,이창언;장기현;이강주;정영식;

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