Towards an optimal performance of adsorption chillers: Reallocation of adsorption/desorption cycle times

I. I. El-Sharkawy, H. Abdelmeguid, B. B. Saha

    Research output: Contribution to journalArticlepeer-review

    46 Citations (Scopus)

    Abstract

    This paper presents a theoretical investigation of the effect of adsorption/desorption times allocation on the performance of adsorption chillers. The ratio between the duration of adsorption and desorption modes is varied to optimize the system performance. Herein, (f) stands for the ratio between duration of desorption and adsorption modes of the adsorption cooling cycle. Employing a two-bed silica gel/water based adsorption chiller, theoretical results show that the system performance in terms of cooling capacity and COP is improved by reducing the ratio (f). However, percentage of improvement depends on the system design and its operating conditions. It is also found that, for each cycle time, there is an optimal value of (f) that maximizes the system performance. Theoretical results show that for a half cycle time of 350 s, switching time of 35 s and f of 0.8, the system delivers continues cooling using only two sorption reactors and minimizes fluctuations in chilled water outlet temperature.

    Original languageEnglish
    Pages (from-to)171-182
    Number of pages12
    JournalInternational Journal of Heat and Mass Transfer
    Volume63
    DOIs
    Publication statusPublished - 2013

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Mechanical Engineering
    • Fluid Flow and Transfer Processes

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