Affiliation:
1. College of Technology at Jeddah, P.O. Box 42204, Jeddah 21541, Kingdom of Saudi Arabia
Abstract
The purpose of this paper is to demonstrate the importance of the use of the exergy analysis in the optimization of the geometry of a periodic-flow regenerator. The optimum geometry of the regenerator is determined using the unit cost of exergy of the warm air delivered as the objective function. The running cost is determined using different unit costs for the pressure component of exergy E˙ΔP and the thermal component of exergy E˙ΔT, which are evaluated separately. The ratio of the two unit costs has been calculated for an air-conditioning application in which the regenerator is used. A mathematical model of condensation, evaporation, thermal conductivity and heat transfer is presented for calculating the fluid and matrix temperatures effect on the regenerator performance. The governing differential equations have been formulated in terms of the characteristic dimensionless groups (Πt,Λt, and Zt).
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference12 articles.
1. Chung-hsinh, Li
, 1983, “A Numerical Finite Difference Method for Performance Evaluation of a Periodic-Flow Heat Exchanger,” ASME J. Heat Transfer, 105, pp. 611–617.
2. Hausen, H., 1983, Heat Transfer in Counterflow, Paralleflow and Crossflow, McGraw Hill NY.
3. Jassim, R. K., 2002, “Evaluation of Matrix Thermal Conductivity Effect on the Thermoeconomic Optimization of an Air-Conditioning Rotary Regenerator” ECOS 2002, 1, Berlin, Germany, pp. 285–296.
4. van-Leersum, J. G., and Ambrose, C. W., 1981, “Comparisons Between Experiments and Theoretical Model of Heat and Mass Transfer in Regenerators With Non-Sorbing Matrices,” ASME J. Heat Transfer, 103, pp. 189–195.
5. van-Leersum, J. G.
, 1986, “A Numerical Description of Condensation in Non-Hygroscopic Regenerator Matrices,” Numer. Heat Transfer, 9, pp. 365–379.
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