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Experimental study of capillary-assisted water evaporators for vapour-absorption systems

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  • Sabir, H. M.
  • Bwalya, A. C.

Abstract

Direct exchange (DX) water evaporators with internal capillary structure have been developed and tested. The performances of three evaporators, two with internal open grooves (IOG) and one with a layer of sintered metal powder, are presented for various air velocities and temperatures. The internally powder coated (IPC) evaporator was found to offer the best performance, and achieved an average evaporation capacity of 700 W. The two IOG evaporators achieved average evaporation capacities of 500 and 300 W, for evaporators having deep and shallow grooves (SG), respectively. The IPC evaporator also had higher boiling and overall heat transfer coefficients compared with the two IOG evaporators.

Suggested Citation

  • Sabir, H. M. & Bwalya, A. C., 2002. "Experimental study of capillary-assisted water evaporators for vapour-absorption systems," Applied Energy, Elsevier, vol. 71(1), pages 45-57, January.
    • Handle: RePEc:eee:appene:v:71:y:2002:i:1:p:45-57
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    Cited by:

    1. Thimmaiah, Poovanna Cheppudira & Sharafian, Amir & Rouhani, Mina & Huttema, Wendell & Bahrami, Majid, 2017. "Evaluation of low-pressure flooded evaporator performance for adsorption chillers," Energy, Elsevier, vol. 122(C), pages 144-158.
    2. Cheppudira Thimmaiah, Poovanna & Sharafian, Amir & Huttema, Wendell & McCague, Claire & Bahrami, Majid, 2016. "Effects of capillary-assisted tubes with different fin geometries on the performance of a low-operating pressure evaporator for adsorption cooling system applications," Applied Energy, Elsevier, vol. 171(C), pages 256-265.
    3. Abadi, G. Bamorovat & Bahrami, Majid, 2020. "Combined evaporator and condenser for sorption cooling systems: A steady-state performance analysis," Energy, Elsevier, vol. 209(C).
    4. Jouhara, Hussam & Ezzuddin, Hatem, 2013. "Thermal performance characteristics of a wraparound loop heat pipe (WLHP) charged with R134A," Energy, Elsevier, vol. 61(C), pages 128-138.

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