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Research on the Economizer Improvement Program for 300MW Units at XBP Power Plant

Author: GaoJinZuo
Tutor: YanWeiPing；WangJianHua
School: North China Electric Power University (Hebei)
Course: Power Engineering
Keywords: boiler economizer radiation heat transfer numerical
CLC: TK223.33
Type: Master's thesis
Year: 2008
Downloads: 76
Quote: 0
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Abstract


Energy-saving and environmental protection are the two major global problems. In recent years the technological transformation for boiler economizer, focused on how to expand heating surface. This paper proposes a new design to make usage of the potential calorific radiation at rear of the boiler flue gas, as high as 400℃.It is inserted some plates in the middle of the economizer ranks,to make full use of that calorific radiation, thus enhance heat transfer effects of the tube wall at gas-side.The result obtained are encouraging and satisfactory.The numerical results show that the feed water temperature leaving the economizer is increased 5-7°C, the flue gas leaves the economizer at temperature around 20-30°C reduction,and the overall heat transfer coefficient in the heat exchanger with plates inserted is increased by an average of forty-one percent (41%).

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CLC: > Industrial Technology > Energy and Power Engineering > Steam Power Engineering > Steam boiler > Boiler constructed > Heated parts > Economizer
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