Activated carbon-graphene nanoplatelets based green cooling system: Adsorption kinetics, heat of adsorption, and thermodynamic performance

Mahua Jahan Rupa, Animesh Pal, Bidyut Baran Saha

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    This study presents the adsorption kinetics and thermodynamic analysis of green cooling systems employing activated carbon-graphene composite/ethanol pairs. Instantaneous adsorption uptake of these pairs is experimentally measured at various adsorption and evaporation temperatures. The measured data are fitted with the widely used two kinetics models; viz., Fickian diffusion (FD) and linear driving force (LDF) models and between them LDF shows better to track the behavior of the instantaneous uptake of the studied pairs. The diffusion time constant and activation energy are determined for all pairs. Uptake and temperature dependency heat of adsorption is also analyzed. The thermodynamic performance parameters have been computed employing time-independent cooling cycle at three evaporation temperatures of 5, 10, and 15 °C with a function of different heat source temperatures. Theoretical analysis demonstrates that the composite/ethanol pairs possess high cooling effect which will provide notable direction to develop next-generation cooling systems.

    Original languageEnglish
    Article number116774
    JournalEnergy
    Volume193
    DOIs
    Publication statusPublished - Feb 15 2020

    All Science Journal Classification (ASJC) codes

    • Civil and Structural Engineering
    • Building and Construction
    • Pollution
    • Mechanical Engineering
    • Industrial and Manufacturing Engineering
    • Electrical and Electronic Engineering

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