مدل‌سازی سه بعدی انتقال حرارت تشعشعی در کوره‌ها با روش منطقه‌ای

نوع مقاله: مقاله پژوهشی

چکیده

کوره‌های صنعتی را می‌توان به عنوان یک بسته سه بعدی در نظر گرفت و در آن‌ها از آنالیز ناحیه‌ای مدل‌سازی انتقال حرارت تشعشعی برای یافتن توزیع سه بعدی دما استفاده کرد. در این مقاله نواحی تبادل با انتگراسیون عددی ساده شده در سه بعد سطح-سطح، سطح-گاز و گاز-گاز برای محیط جذب و انتشار تعیین شده و اثرات چند پارامتر مهم در کوره توضیح داده شده است. سپس نتیجه‌گیری شده است که روش ناحیه‌ای برای در نظر گرفتن راندمان حرارتی چند بعدی کوره‌های گازی مناسب است.
 

کلیدواژه‌ها


عنوان مقاله [English]

Three Dimensional Modeling of Radiative Heat Transfer in Furnaces

چکیده [English]

An industrial furnace could be considered as a three dimensional enclosure. The zonal analysis of radiative heat transfer modeling is used for finding the three dimensional temperature distributions. Exchange areas are determined by simplified numerical integration in three dimension for surface-surface, surface-gas, and gas-gas zones for absorbing and emitting media. The effects of some important parameters in the furnaces are described. It is shown that the zonal method is a useful numerical method for considering multi-dimensional thermal performance of gas-filled enclosures.
 

کلیدواژه‌ها [English]

  • Radiation Heat Transfer
  • Furnace Modeling
  • Zone Method
  • Exchange Areas
  • Numerical modeling

[1] Mahallawy F. & El-Dinhabic S., Fundamentals and technology of combustion, 1st Ed., Elsevier Science Ltd., 2002.

[2] Rhine J.M. & Tucker R.J., Modeling of gas-fired furnaces and boilers and other industrial heating processes, McGraw-Hill, 1991.

[3] Cohen E.S., Sc. D. Thesis, Mass. Inst. Tech., Cambridge, 1955.

[4] Hottel H.C. & Cohen E.S., “Radiant heat exchange in a gas-filled enclosure: allowance for non uniformity of gas temperature”, AIChE J., Vol. 4, pp. 3-14, 1958.

[5] Hottel H.C. & Sarofim A.F., Radiative Transfer, 1st Ed., McGraw-Hill, New York, 1967. 

[6] Noble J., “The zone method: explicit matrix relations for total exchange areas”, Int. J. Heat Mass Transfer, Vol. 18, pp. 261-269, 1974.

[7] Naraghi M.H.N. & Chung B.T.F., “A unified matrix formulation for the zone method: a stochastic approach”, Int. J. Heat Mass Transfer, Vol. 28, pp. 245-251, 1985.

[8] Siegel R. & Howell J.R., Thermal Radiation Heat Transfer, 3rd Ed., Hemisphere Publishing Corporation, New York, 1992.

[9] Modest M.F., Radiative Heat Transfer, Mc-Graw Hill Inc., 1993.

[10] Becker H.B., “A Mathematical solution for a gas-to-surface radiative exchange area for a rectangular parallelpiped enclosure containing a gray gas”, ASME J. of Heat Transfer, Vol. 99, pp. 203-207, 1977.

[11] Tucker R.J., “Direct exchange areas for calculation radiation transfer in rectangular furnaces”, ASME J. of Heat Transfer, Vol. 108, pp. 707-710, 1986.

[12] Sika J., “Evaluation of direct exchange areas for a cylindrical enclosure”, ASME J. of Heat Transfer, Vol. 113, pp. 1040-1044, 1991.

[13] Tian W. & Chiu W.K.S., “Calculation of direct exchange areas for non-uniform zones using a reduced integration scheme”, ASME J. Heat Transfer, Vol. 125, pp. 839-844, 2003.

[14] Siddal R.G., Proceeding of the Eight Int. Heat Transfer Conference, San Francisco, CA, pp. 751-756, 1986.

[15] Modest M.F., “Radiative equilibrium in a recrangular enclosure bounded by gray walls”, J. Quant. Spectrosc. Radiat. Transfer, Vol. 15, pp. 445-461, 1975.

[16] Lobo W.E. & Evans J.E., “Heat transfer in radiant section of petroleum heaters”, Trans. A.I., AIChE, Vol. 35, pp. 743-751, 1939.

[17] Nogay R., Better design method for fired heaters, Hydrocarbon Processing, Nov. 1985.

[18] Liu M.S., Choi C.K. & Leung C.W., “Startup analysis of oil-fired furnace-the smoothing Monte Carlo model approach”, Heat and Mass Transfer, Vol. 37, pp. 449-457, 2001.

[19] Borjiani M.N, Farhat H. & Radhouani M.S., “Analysis of radiative heat transfer in a partitioned idealized furnace”, Numerical Heat Transfer, Part A., Vol. 44, pp. 199-218, 2003.

[20] Menguc M. & Viskanta R., “Radiative transfer in three-dimensional rectangular enclosures containing inhomogeneous, anisotropically scattering media”, J. Quant. Spectrosc. Radiat. Transfer, Vol. 33, pp. 533-549, 1985.

[21] Carnahan B, Luther HA and Wilkes JO., Applied numerical methods, New York: John Wiley, pp. 100-127, 1969.