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The Application of Radiation Shields for Thermal Control of Superheater Tubes in Boiler
Department of Mechanical Engineering, Langrud Branch, Islamic Azad University, Langrud, Iran
Department of Mechanical Engineering, Langrud Branch, Islamic Azad University, Langrud, Iran
Department of Mechanical Engineering, Roudsar-Amlash branch, Islamic Azad University, Roudsar, Iran
- 1 Department of Mechanical Engineering, Langrud Branch, Islamic Azad University, Langrud, Iran
- 2 Department of Mechanical Engineering, Langrud Branch, Islamic Azad University, Langrud, Iran
- 3 Department of Mechanical Engineering, Roudsar-Amlash branch, Islamic Azad University, Roudsar, Iran
Energy and Power Engineering·Volume 04 (2012)·Pages 77–84·Published 22 March 2012·DOI10.4236/epe.2012.42011
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Abstract
Superheater tubes temperature control is a necessity for long lifetime, high efficiency and high load following capability in boiler. This study reports a new approach for the control strategy design of boilers with special shields. The presented control strategy is developed based on radiation thermal shields with low emissivity coefficient and high reflectivity or scattering coefficient. In order to simulate the combustion event in boiler and heat transfer to superheater tubes, an effective set of computational fluid dynamic (CFD) codes is used. Results indicate a successful identification of over- heated zones on platen superheater tubes and effect of radiation shields for solving this problem.
KeywordsPlaten SuperheaterHeat TransferCombustionRadiation Thermal ShieldsBoilerCFD
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