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Cycle analysis of air-cooled absorption chiller using a new working solution

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  • Yoon, Jung-In
  • Kwon, Oh-Kyung

Abstract

A cycle analysis was achieved to predict the characteristics by comprehensive modelling and simulation of an air-cooled, double-effect absorption system using the new H2O/LiBr+HO(CH2)3OH solution. The simulation results showed that the new working fluid may provide the crystallisation limit 8% higher than the conventional H2O/LiBr solution. With a crystallisation margin of 3 wt%, the optimal solution distribution ratio was found to be in the range of 37–39%. Variation of cooling air inlet temperature had a sensitive effect on the cooling coefficient of performance (COP) and corrosion problem. The simulation of heat exchangers with UA value revealed that the absorber and evaporator were relatively important for an air-cooled system compared with the condenser and the low temperature generator. The effects of cooling air flow rate, circulation weak solution flow rate and chilled water inlet temperature were also examined. The new working fluid may provide a COP approximately 3% higher than the conventional H2O/LiBr solution in normal conditions of circulation weak solution.

Suggested Citation

  • Yoon, Jung-In & Kwon, Oh-Kyung, 1999. "Cycle analysis of air-cooled absorption chiller using a new working solution," Energy, Elsevier, vol. 24(9), pages 795-809.
    • Handle: RePEc:eee:energy:v:24:y:1999:i:9:p:795-809
    DOI: 10.1016/S0360-5442(99)00038-9
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    Cited by:

    1. Alkasmoul, Fahad & Asaker, Mohammed & Widuch, Aleksander & Malicki, Marcin & Zwierzchowski, Ryszard & Wołowicz, Marcin, 2023. "Multigeneration source based on novel triple-component chiller configuration co-supplied with renewable and fossil energy operated in Arabic Peninsula conditions," Energy, Elsevier, vol. 263(PC).
    2. Querol, E. & Gonzalez-Regueral, B. & García-Torrent, J. & Ramos, Alberto, 2011. "Available power generation cycles to be coupled with the liquid natural gas (LNG) vaporization process in a Spanish LNG terminal," Applied Energy, Elsevier, vol. 88(7), pages 2382-2390, July.
    3. Sun, Jian & Fu, Lin & Zhang, Shigang, 2012. "A review of working fluids of absorption cycles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(4), pages 1899-1906.
    4. Arshi Banu, P.S. & Sudharsan, N.M., 2018. "Review of water based vapour absorption cooling systems using thermodynamic analysis," Renewable and Sustainable Energy Reviews, Elsevier, vol. 82(P3), pages 3750-3761.
    5. Rameshkumar, A. & Udayakumar, M. & Saravanan, R., 2009. "Heat transfer studies on a GAXAC (generator-absorber-exchange absorption compression) cooler," Applied Energy, Elsevier, vol. 86(10), pages 2056-2064, October.
    6. Tierney, M.J., 2007. "Options for solar-assisted refrigeration—Trough collectors and double-effect chillers," Renewable Energy, Elsevier, vol. 32(2), pages 183-199.
    7. Du, S. & Wang, R.Z. & Lin, P. & Xu, Z.Z. & Pan, Q.W. & Xu, S.C., 2012. "Experimental studies on an air-cooled two-stage NH3-H2O solar absorption air-conditioning prototype," Energy, Elsevier, vol. 45(1), pages 581-587.

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