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http://dx.doi.org/10.3795/KSME-B.2010.34.5.465

Effect of Preventive Maintenance on Performance of Air Heater in a Power Plant  

Jang, Jin-Hyung (Korea Electric Power Research Institute)
Hong, Eun-Kee (Korea Electric Power Research Institute)
Hwang, Kwang-Won (Korea Electric Power Research Institute)
Yun, Rin (Dept. of Mechanical Engineering, Hanbat Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.34, no.5, 2010 , pp. 465-469 More about this Journal
Abstract
Air heater used in power plant helps increase the thermal efficiency of the boiler by recovering the heat from the boiler flue gas and thus preventing the loss of useful heat. This study investigates the effect of preventive maintenance on the performance of the air heater in a power plant. Performance indexes for the air heater are calculated to observe the changes in the performance and operation status of the air heater before and after preventive maintenance. The major performance indexes considered are temperature efficiency of the flue gas side, air leakage rate, heat recovery rate, heat transmission rate, and heat capacity ratio. The performance of the air heater is evaluated before and after preventive maintenance; our results show that all the abovementioned performance indexes are improved after the maintenance.
Keywords
Air-Heater; Preventive Maintenance; Performance Indexes; Gas Side Temperature Efficiency;
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  • Reference
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4 ASME PTC Performance Test Code 4 "Boiler," 1998, ASME, New York.
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