Efficiency studies of combination tube boilers

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• 作者：Brundaban Patro ^{bpatro111@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：IBR ; Indian Boiler Regulation ; GCV ; Gross Calorific Value ; LCV ; Lower Calorific Value ; NCV ; Net Calorific Value ; HCV ; Higher Calorific Value ; TDS ; Total Dissolved Solids ; DM ; Demineralization
• 刊名：Alexandria Engineering Journal
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：55
• 期：1
• 页码：193-202
• 全文大小：1083 K

文摘

This paper presents the study of combination tube boilers, as applicable to commercial use, along with the significant features, limitations, and applicability. A heat balance sheet is prepared to know the various heat losses in two different two-pass combination tube boilers, using low grade coal and rice husk as a fuel. Also, the efficiency of the combination tube boilers is studied by the direct and heat loss methods. It is observed that the dry flue gas loss is a major loss in the combination tube boilers. The loss due to the unburnt in the fly ash is very less in the combination tube boilers, due to the surrounded membrane wall. It is also observed that the loss due to the unburnt in the bottom ash has a considerable amount for the heat loss, and cannot be ignored.