The Experimental System Design on Heat Transfer and Flow Characteristics of Rotary Air Preheater

Abstract:

Rotary air preheater is adopted widely in large power plant boiler,due to poor working conditions, inside rotary air preheater,plugging ash and corrosion happens easily,causes the rise of exhaust gas temperature,fan resistance increases,causes serious damage to the safe and economic operation in power plants,so heat transfer and flow of the rotary air preheater remains to be further optimized.By studying the working characteristics of rotary air preheater, simplifies the rotational structure of the rotary air preheater to a cuboid wind tunnel,internal layouts more groups of heat transfer components,through periodic switching valve,changes the flow of hot air and cold air,alternating flushing heat transfer element,simulating the unsteady heat transfer process of rotary air preheater. Experiment with NF heat transfer components,getting the convective heat transfer coefficient and resistance coefficient of this heat transfer element under different wind speed,verifies the feasibility of experiment system research on the heat transfer and flow characteristics.

• Periodical: Applied Mechanics and Materials (Volumes 602-605)
• Pages: 90-93
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.602-605.90
• Online since: August 2014
• Authors: Jian Qiang Gao*, Xing Peng Gu
• Keywords: Experimental System, Flow Characteristics, Heat Transfer Characteristics, Heat Transfer Element, Rotary Air Preheater

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DOI: 10.1016/s0017-9310(97)00168-3

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