Analysis on thermal stress deformation of rotary air-preheater in a thermal power plant

Hongyue Wang; Lingling Zhao; Zhigao Xu; Hyungtaek Kim

Korean Journal of Chemical Engineering, Vol.26, No.3, 833-839, May, 2009

DOI10.1007/s11814-009-0139-1 Export Citation

Analysis on thermal stress deformation of rotary air-preheater in a thermal power plant

Hongyue Wang, Lingling Zhao¹, Zhigao Xu¹, and Hyungtaek Kim^†

Division of Energy System Research, Ajou University, Suwon 443-749, Korea
¹College of Energy and Environment, Southeast University, Nanjing 210096, China

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Thermal stress deformation is a disadvantage of the rotary air preheater, which results in leakages of fluids and decrease of efficiency of the thermal system. To evaluate the results of deformation during its operation, the temperature distribution of storage materials is calculated by solving a simplified model. In this developed method, the effect of dimensionless parameters on the temperature distribution of rotary air preheater was investigated and compared with the results of modified heat transfer coefficient method. By solving coordination, structural and geometrical equations, and boundary condition in thermal-elastic theory, the thermal stress distributions in rotary air preheater are obtained in an analytical method. Experimental results are obtained by employing factorial design values of rotary air preheater for the validation of the calculation data. Good agreement has been yielded by comparing the analytical data and experimental data. Therefore, some conclusions necessary to undertake an adequate adjustment of thermal stress deformation have also been formulated, and online monitoring of the clearance of radial seals is proposed.

Keywords:Rotary Air-preheater;Thermal Stress Deformation;Non-dimensional;Temperature Distribution

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http://www.howden.com/en

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[2] Chang ZY, Mechanism and Machine Theory, 36, 143 (2001)

[3] Kant T, Journal of Thermal Stresses, 17, 229 (1994)

[4] Skiepko T, Heat Transf. Eng., 18(1), 56 (1997)

[5] Skiepko T, Heat Recov. Syst., 8, 469 (1998)

[6] Skiepko T, Heat Transfer Eng., 27, 14 (1993)

[7] Gromovyk VI, J. Appl. Maths Mechs., 59, 159 (1995)

[8] Sunar M, J. of Mat. Pro. Tech., 123, 172 (2006)

[9] Robaldo A, Computers and Structures, 84, 1236 (2006)

[10] Creswick FA, Ind. Math., 8, 61 (1957)

[11] Mondt JR, ASME J. Eng. Power, 86, 121 (1964)

[12] Lambertson TJ, Trans. ASME, 15, 57 (1957)

[13] Kays WM, McGraw Hill Co. (1984)

[14] Banke GD, ASME, J., Eng., Power, 86, 105 (1964)

[15] Ghodsi N, Applied Thermal Engineering, 23, 571 (2003)

[16] Djuric M, Hung J, Indus. Chem., 17, 1 (1989)

[17] Leong KC, Heat Recov. Syst. CHP, 11, 461 (1991)

[18] Beck DS, Trans. ASME, 116, 574 (1994)

[19] Bahnke GD, ASME J. Eng. Power, 86, 105 (1964)

[20] Willmott AJ, Journal Institute of Energy, 66, 54 (1999)

[21] Skiepko T, Int. J. Heat Mass Transf., 31, 2227 (1988)

[22] Skiepko T, Int. J Heat Mass Transf., 32, 1443 (1989)

[23] Larson FW, Int. J. Heat Mass Transf., 10, 149 (1967)

[24] Klinkenberg A, Ind. Eng. Chem., 46, 2286 (1954)

[25] Schmidt FW, Int. J. Heat Mass Transf., 100, 737 (1978)

[26] Szego J, Int. J. Heat Mass Transf., 100, 740 (1978)

[27] Hwang JW, Yoon DY, Choi KH, Kim Y, Kim LH, Korean J. Chem. Eng., 25(2), 217 (2008)

[28] Drobnic BJ, Int. J. Heat Mass Transf., 10, 161 (2006)

[29] Poncet S, Schiestel R, Int. J. Heat Mass Transf., 50(7-8), 1528 (2007)

[30] http://www.howden.com/en