Affiliation:
1. Department of Energy Resources and Environmental Engineering, Egypt-Japan University of Science and Technology (E-JUST), P.O. Box 179, New Borg El-Arab City, Alexandria 21934, Egypt
Abstract
In this study, a detailed modeling of the heat and mass transfer processes inside a plate-and-frame absorber with hydrophobic microporous membrane contactor at aqueous solution-water vapor interface as a part of a chiller model is developed. The absorber is a component of a 5 kW cooling capacity single effect lithium bromide-water absorption chiller with a hot water thermally driven generator, a water-cooled absorber, and a condenser. The model is used to investigate the performance of the absorber in case the chiller operates at different values of the inlet driving hot water and cooling water (coolant) temperatures. The results clearly indicate that for the same cooling capacity of the chiller and compared with the performance at the design point value, increasing the inlet driving hot water temperature results in an increase in the required absorber size and consequently a decrease in the absorber performance, while decreasing the cooling water (coolant) inlet temperature leads to slight decreases in the required absorber size and consequently an increase in the absorber performance. The effect is prominent and can be used to decrease the absorber size for chillers work in places where the option of lower inlet coolant temperature is available with normal driving hot water temperature.
Subject
Fluid Flow and Transfer Processes,General Engineering,Condensed Matter Physics,General Materials Science
Reference21 articles.
1. Drost, K., Liburdy, J., Paul, B., and Peterson, R., 2005, “Enhancement of Heat and Mass Transfer in Mechanically Constrained Ultra Thin Films,” DOE Final Report No. FC36-01GO11049.
2. Design of a Compact Absorber With a Hydrophobic Membrane Contactor at the Liquid Vapor Interface for Lithium Bromide-Water Absorption Chillers;Ali;Appl. Energy
3. Characteristics of the Membrane Utilized in a Compact Absorber for Lithium Bromide-Water Absorption Chillers;Ali;Int. J. Refrig.
4. A Review of Absorption Refrigeration Technologies;Srikhirin;Renewable Sustainable Energy Rev.
5. Use of Membrane Transport in an Absorption Thermal Transfer Cycle;Yu;J. Thermophys. Heat Transfer
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