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Making adsorptive chillers faster by a proper choice of adsorption isobar shape: Comparison of optimal and real adsorbents

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  • Okunev, Boris N.
  • Aristov, Yuri I.

Abstract

This paper addresses the first quantitative evaluation of the effect of adsorbent isobar shape on the dynamics of AC (adsorptive chiller) cycle. The numerical and experimental studies of this effect have been performed to answer the question “Which practical enhancement of the AC specific cooling power may be expected when one would use an adsorbent with the optimal isobar shape instead of a real adsorbent typical for AC?”. The reference (real) adsorbent is SWS-1L (mesoporous silica gel modified by CaCl2) that was proven to be efficient in AC units driven by waste or renewable heat. The optimal adsorbent is found to provide shorter AC cycles as compared with the real one so that the SCP increases by a factor of 1.5 that is of certain practical importance. In a broader sense, this original approach can be further used to specify requirements for selecting known adsorbents as well as tailoring a new generation of adsorbents optimal for a variety of practically interesting AC cycles.

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  • Okunev, Boris N. & Aristov, Yuri I., 2014. "Making adsorptive chillers faster by a proper choice of adsorption isobar shape: Comparison of optimal and real adsorbents," Energy, Elsevier, vol. 76(C), pages 400-405.
    • Handle: RePEc:eee:energy:v:76:y:2014:i:c:p:400-405
    DOI: 10.1016/j.energy.2014.08.031
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    1. Sapienza, Alessio & Santamaria, Salvatore & Frazzica, Andrea & Freni, Angelo, 2011. "Influence of the management strategy and operating conditions on the performance of an adsorption chiller," Energy, Elsevier, vol. 36(9), pages 5532-5538.
    2. Sapienza, Alessio & Santamaria, Salvatore & Frazzica, Andrea & Freni, Angelo & Aristov, Yuri I., 2014. "Dynamic study of adsorbers by a new gravimetric version of the Large Temperature Jump method," Applied Energy, Elsevier, vol. 113(C), pages 1244-1251.
    3. L. G. Gordeeva & Yu. I. Aristov, 2012. "Composites ‘salt inside porous matrix’ for adsorption heat transformation: a current state-of-the-art and new trends," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 7(4), pages 288-302, April.
    4. Habib, Khairul & Choudhury, Biplab & Chatterjee, Pradip Kumar & Saha, Bidyut Baran, 2013. "Study on a solar heat driven dual-mode adsorption chiller," Energy, Elsevier, vol. 63(C), pages 133-141.
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    Cited by:

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    3. An, G.L. & Wang, L.W. & Gao, J. & Wang, R.Z., 2018. "A review on the solid sorption mechanism and kinetic models of metal halide-ammonia working pairs," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 783-792.
    4. Sharafian, Amir & Nemati Mehr, Seyyed Mahdi & Thimmaiah, Poovanna Cheppudira & Huttema, Wendell & Bahrami, Majid, 2016. "Effects of adsorbent mass and number of adsorber beds on the performance of a waste heat-driven adsorption cooling system for vehicle air conditioning applications," Energy, Elsevier, vol. 112(C), pages 481-493.
    5. Grekova, A.D. & Girnik, I.S. & Nikulin, V.V. & Tokarev, M.M. & Gordeeva, L.G. & Aristov, Yu.I., 2016. "New composite sorbents of water and methanol “salt in anodic alumina”: Evaluation for adsorption heat transformation," Energy, Elsevier, vol. 106(C), pages 231-239.

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