General Information
    • ISSN: 1793-821X
    • Frequency: Quarterly (2013-2014); Bimonthly (Since 2015)
    • DOI: 10.18178/JOCET
    • Editor-in-Chief: Prof. Haider F. Abdul Amir
    • Executive Editor: Ms. Julia S. Ma
    • Abstracting/ Indexing: EI (INSPEC, IET), Electronic Journals Library, Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, Google Scholar, ProQuest and DOAJ.
    • E-mail: jocet@ejournal.net
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Editor-in-chief
School of Science and Technology Universiti Malaysia Sabah, Malaysia.
I would like to express my appreciation to all authors, reviewers and edtors.
JOCET 2015 Vol.3(1): 43-47 ISSN: 1793-821X
DOI: 10.7763/JOCET.2015.V3.166

Effect of Vapour Absorption Enhancement in Solar-Heat Driven Air-Conditioning System

Papia Sultana, N. E. Wijeysundera, J. C. Ho, C. Yap, and T. K. Chang
Abstract—The solar-heat driven air-conditioning system has strong potential for significant primary energy savings. For most applications, the system involves Li-Br-water absorption chillers, which are suitable for large building applications. For absorption chillers to be used in small residential buildings, the reduction of the chiller system footprint is critical. In the present study focus has been given to design a vapour-absorption cooling system with improved transport phenomena using film-inversion techniques. The film-inverting absorber has resulted in the enhancement of vapour absorption rate by 83-95 percent more than a conventional falling film-tubular absorber based on numerical simulation data. The proposed design has the potential to increase Coefficient of Performance (COP) of a single-effect vapour absorption system 160% higher than that of a conventional vapour-absorption system. It could also reduce the foot-print of the entire vapour absorption system especially for low-grade-heat driven applications. At least 10°C temperature reduction has been achieved in maintaining the same condensing pressure. Moreover, a smaller area is needed to harvest hot water for a solar-heat driven air-conditioning system. Also there has been at least 65% reduction of the collector area needed per kW cooling energy.

Index Terms—Coefficient of Performance (COP), film-inverting, solar-heat-driven, vapour absorption.

N. E. Wijeysundera was with Mechanical Engineering Department, National University of Singapore (e-mail nwijeysundera@gmail.com).
J. C. Ho and C. Yap are with Mechanical Engineering Department, National University of Singapore (e-mail: mpehojc@nus.edu.sg, cyap@nus.edu.sg).

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Cite:Papia Sultana, N. E. Wijeysundera, J. C. Ho, C. Yap, and T. K. Chang, "Effect of Vapour Absorption Enhancement in Solar-Heat Driven Air-Conditioning System," Journal of Clean Energy Technologies vol. 3, no. 1, pp. 43-47, 2015.

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