Waste heat driven multi-bed adsorption chiller: Heat exchangers overall thermal conductance on chiller performance

Bidyut Barana Saha, Ibrahim Ibrahim El-Sharkawy, Shigeru Koyama, Jong Boong Lee, Ken Kuwahara

    Research output: Contribution to journalArticlepeer-review

    36 Citations (Scopus)

    Abstract

    The results of an analytic investigation on the influence of the thermal conductance of a sorption element (adsorber/desorber), evaporator, and condenser on the performance of a three-bed silica-gel-water adsorption chiller are presented with consideration given to the thermal capacitance ratio of the adsorbent and metal of the adsorber/desorber heat exchanger. The analysis was performed by using a cycle-simulation model developed by the authors. The chiller is driven by exploiting waste heat at a temperature 60 and 95°C with a cooling source at 30°C for air conditioning purpose. The results show that the cycle performance is strongly affected by the thermal capacitance ratio and sorption element thermal conductance due to several sensible heating/cooling requirements resulting from batched cycle operation. The model is somewhat sensitive to the thermal conductance of the evaporator, and the thermal conductance of the condenser is the least sensitive parameter.

    Original languageEnglish
    Pages (from-to)80-87
    Number of pages8
    JournalHeat Transfer Engineering
    Volume27
    Issue number5
    DOIs
    Publication statusPublished - Jun 1 2006

    All Science Journal Classification (ASJC) codes

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

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