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Development of a Simple Analytical Model for Desiccant Wheels-I. Approximate Solution of the Governing Equations

로터리 제습기의 단순 해석 모델 개발-I. 지배방정식의 근사적 해석

  • Kim, Dong-Seon (Department of Mechanical Engineering, Chungju National University) ;
  • Choi, Young-Don (Department of Mechanical Engineering, Korea University) ;
  • Lee, Dae-Young (Korea Institute of Science and Technology(KIST))
  • Received : 2011.08.23
  • Published : 2011.12.10

Abstract

A simple analytical model has been developed from the approximate solution of the governing equations for desiccant wheels. The model has been compared with a numerical twodimensional transient model and found capable of making realistic prediction. The analytical model will be further developed to provide simple effectiveness correlations which can be useful for the rough design or long-term simulation of the desiccant wheels in DEC systems.

Keywords

References

  1. Daou, K., Wang, R. Z., and Xia, Z. Z., 2006, Desiccant cooling air conditioning:a review, Renew. Sust. Energ. Rev., Vol. 10, pp. 55-77. https://doi.org/10.1016/j.rser.2004.09.010
  2. Parmar, H. and Hindoliya, H. A., 2011, Desiccant Cooling System for Thermal Comfort:A Review, Int. J. Eng. Sci. Tech., Vol. 3, pp. 4218- 4227.
  3. Majumdar, P., 1998, Heat and mass transfer in composite pore structures for dehumidification, Solar Energy, Vol. 62, pp. 1-10. https://doi.org/10.1016/S0038-092X(97)00080-7
  4. Zhang, L. Z. and Niu, J. L., 2002, Performance comparisons of desiccant of desiccant wheels for air dehumidification and enthalpy recovery, Appl. Therm. Eng., Vol. 22, pp. 1347-1367. https://doi.org/10.1016/S1359-4311(02)00050-9
  5. Zhang, X. J., Dai, Y. J., and Wang, R. Z., 2003, A simulation study of heat and mass transfer in a honeycomb rotary desiccant dehumidifier, Appl. Therm. Eng., Vol. 23, pp. 989-1003. https://doi.org/10.1016/S1359-4311(03)00047-4
  6. Sphaier, L. A. and Worek, W. M., 2004, Analysis of heat and mass transfer in porous sorbents used in rotary regenerators, Int. J. Heat Mass Tran., Vol. 47, pp. 3415-3430. https://doi.org/10.1016/j.ijheatmasstransfer.2004.01.016
  7. Ruivo, C. R., Costa, J. J., and Figueiredo, A. R., 2007, On the behaviour of hygroscopic wheels:Part I-channel modelling, Int. J. Heat Mass Tran., Vol. 50, pp. 4812-4822. https://doi.org/10.1016/j.ijheatmasstransfer.2007.03.003
  8. Chung, J. D. and Lee, D. Y., 2009, Effect of desiccant isotherm on the performance of desiccant wheel, Int. J. Refrig., Vol. 32, pp. 720-726. https://doi.org/10.1016/j.ijrefrig.2009.01.003
  9. Van Den Bulck, E., Mitchell, J. W., and Klein, S. A., 1985, Design theory for rotary heat and mass exchangers-I. Wave analysis of rotary heat and mass exchangers with infinite transfer coefficients, Int. J. Heat Mass Tran., Vol. 28, pp. 1575-1586. https://doi.org/10.1016/0017-9310(85)90259-5
  10. Van Den Bulck, E., Mitchell, J. W., Klein, S. A., 1985, Design theory for rotary heat and mass exchangers-II. Effectiveness number of transfer units method for rotary heat and mass exchangers, Int. J. Heat Mass Tran., Vol. 28, pp. 1587-1595. https://doi.org/10.1016/0017-9310(85)90260-1
  11. Simonson, C. J. and Besant, R. W., 1999, Energy wheel efectiveness:part I-development of dimensionless groups, Int. J. Heat Mass Tran., Vol. 42, pp. 2161-2170. https://doi.org/10.1016/S0017-9310(98)00325-1
  12. Simonson, C. J. and Besant, R. W., 1999, Energy wheel efectiveness:part II-correlations, Int. J. Heat Mass Tran., Vol. 42, pp. 2171-2185. https://doi.org/10.1016/S0017-9310(98)00327-5
  13. Sphaier, L. A. and Worek, W. M., 2009, Parametric analysis of heat and mass transfer regenerators using a generalized effectiveness- NTU method, Int. J. Heat Mass Tran., Vol. 52, pp. 2265-2272. https://doi.org/10.1016/j.ijheatmasstransfer.2008.11.017
  14. Brillhart, P. L., 1997, Evaluation of desiccant rotor matrices using an advanced fixed-bed test system, Ph. D. thesis, University of Illinois at Chicago, USA.
  15. Lee, G., Lee, D. Y., and Kim, M. S., 2004, Development of a linearized model and verification of the exact solution for the analysis of a desiccant dehumidifier, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 16, No. 9, pp. 811-819.
  16. Kim, D. S., Development of a simple analytical model for desiccant wheels-II. Effectiveness correlations, Korean Journal of Air-Conditioning and Refrigeration Engineering, accepted. https://doi.org/10.6110/KJACR.2012.24.1.009

Cited by

  1. Development of a Simple Analytical Model for Desiccant Wheels-II. Effectiveness Correlations vol.24, pp.1, 2012, https://doi.org/10.6110/KJACR.2012.24.1.009