Browse > Article
http://dx.doi.org/10.6110/KJACR.2013.25.2.109

Development of a General Analytical Model for Desiccant Wheels  

Kim, Dong-Seon (Department of Mechanical Engineering, Korea National University of Transportation)
Lee, Dae-Young (Korea Institute of Science and Technology(KIST))
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.25, no.2, 2013 , pp. 109-118 More about this Journal
Abstract
The absence of a simple and general analytical model has been a problem in the design and analysis of desiccant-assisted air-conditioning systems. In this study, such an analytical model has been developed based on the approximate integral solution of the coupled transient ordinary differential equations for the heat and mass transfer processes in a desiccant wheel. It turned out that the initial conditions should be determined by the solution of four linear algebraic equations including the heat and mass transfer equations for the air flow as well as the energy and mass conservation equations for the desiccant bed. It is also shown that time-averaged exit air temperature and humidity relations could be given in terms of the heat and mass transfer effectiveness.
Keywords
Desiccant evaporative cooling; Analytical model; Effectiveness; Desiccant wheel;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Enteria, N., Yoshino, H., Satake, A., Mochida, A. Takaki, R., Yoshie, R., Mitamura, T., and Baba, S., 2010, Experimental heat and mass transfer of the separated and coupled rotating desiccant wheel and heat wheel, Experimental Thermal and Fluid Science, Vol. 34, pp. 603-615.   DOI   ScienceOn
2 Ruivo, C. R., Costa, J. J., Figueiredo, A. R., and Kodama, A., 2012, Effectiveness parameters for the prediction of the global performance of desiccant wheels-An assessment based on experimental data, Renewable Energy, Vol. 38, pp. 181-187.   DOI   ScienceOn
3 Kodama, A., Hirayama, T., Goto, M., Hirose, T., and Critoph, R. E., 2001, The use of psychrometric charts for the optimization of a thermal swill desiccant wheel, Applied Thermal Engineering, Vol. 21, pp. 1657-1674.   DOI   ScienceOn
4 Kim, D. S., 2012, Development of a simple analytical model for desiccant wheels-II. Effectiveness correlations, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 24, No. 1, pp. 9-15.   과학기술학회마을   DOI   ScienceOn
5 Kim, D. S., Choi, Y. D., and Lee, D. Y., 2011, Development of a simple analytical model for desiccant wheels-I. Approximate solution of the governing equations, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 23, No. 12, pp. 821-827.   과학기술학회마을   DOI   ScienceOn
6 Ahmed, M. H., Kattab, N. M., and Fouad, M., 2005. Evaluation and optimization of solar desiccant wheel performance, Renewable Energy Vol. 30, pp. 305-325.   DOI   ScienceOn
7 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.   DOI   ScienceOn