Influence of heat loss from smoke exhaust on thermal efficiency of industrial coal fired boiler
ZHANG Guoguang
SUI Yan
Abstract：The recently test data of 1205 coal fired industrial boilers was analyzed in the paper in order to research the influence degree and change law of heat loss from smoke exhaust and boiler thermal efficiency caused by exhaust gas temperature changing when the other parameters reached the qualified index according to GB/T 15317—2009.The four variation curves-boiler thermal efficiency-heat loss from smoke exhaust,heat loss from smoke exhaust-exhaust gas temperature,the proportion of heat loss from smoke exhaust in all boiler heat loss-exhaust gas temperature, boiler thermal efficiency-exhaust gas temperature, and their equation of linear regression were obtained for correlative research work.The results showed that,when the heat loss from smoke exhaust increased 1.0%,boiler thermal efficiency re-duced 1.12%.When the exhaust gas temperature increased 10 ℃,heat loss from smoke exhaust increased 0.5%,the proportion of heat loss from smoke exhaust in all boiler heat loss increased 1.5%,the boiler thermal efficiency reduced 0.6%.
Keywords：exhaust gas temperatureheat loss from smoke exhaustcoal fired industrial boilerthermal efficiency
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 77-79,84 )