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Simulation of an ammonia–water absorption chiller

Author

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  • Le Lostec, Brice
  • Galanis, Nicolas
  • Millette, Jocelyn

Abstract

An increased interest in absorption chillers has been observed [1] because these systems can utilize solar, geothermal and biomass energy sources, but also because they are quiet, vibration-free, require little maintenance and are ecological [2]. Instead of a compressor system, which uses electricity, an absorption cooling system, using renewable energy and kinds of waste heat energy, may be used for cooling. This paper presents the simulation of a single stage solar absorption chiller operating with an ammonia–water mixture under steady state conditions. This simulation is based on heat and mass balances for each component. The heat and mass transfers in the absorber, the condensation of binary vapor of ammonia–water in the condenser and a thermosyphon desorber placed under the purification column were modeled. The numerical model was compared and validated with experimental data obtained with a solar absorption chiller. The calculated results agree well with experimental data. Simulations based on experimental data were used to predict the temperature and concentration profiles in each heat exchanger. A parametric study was conducted to investigate the effect of evaporator and desorber temperature on the absorption chiller's performance. The COP decreases by 25% with a decrease of 10 °C in evaporator temperature and the COP increases by 4% with an increase of 10 °C in desorber temperature.

Suggested Citation

  • Le Lostec, Brice & Galanis, Nicolas & Millette, Jocelyn, 2013. "Simulation of an ammonia–water absorption chiller," Renewable Energy, Elsevier, vol. 60(C), pages 269-283.
    • Handle: RePEc:eee:renene:v:60:y:2013:i:c:p:269-283
    DOI: 10.1016/j.renene.2013.05.027
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    Citations

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    Cited by:

    1. Du, Yang & Dai, Yiping, 2018. "Off-design performance analysis of a power-cooling cogeneration system combining a Kalina cycle with an ejector refrigeration cycle," Energy, Elsevier, vol. 161(C), pages 233-250.
    2. Wang, R.Z. & Xu, Z.Y. & Pan, Q.W. & Du, S. & Xia, Z.Z., 2016. "Solar driven air conditioning and refrigeration systems corresponding to various heating source temperatures," Applied Energy, Elsevier, vol. 169(C), pages 846-856.
    3. Jung, Chung Woo & An, Seung Sun & Kang, Yong Tae, 2014. "Thermal performance estimation of ammonia-water plate bubble absorbers for compression/absorption hybrid heat pump application," Energy, Elsevier, vol. 75(C), pages 371-378.
    4. Gong, Sunyoung & Goni Boulama, Kiari, 2014. "Parametric study of an absorption refrigeration machine using advanced exergy analysis," Energy, Elsevier, vol. 76(C), pages 453-467.
    5. Alvaro A. S. Lima & Gustavo de N. P. Leite & Alvaro A. V. Ochoa & Carlos A. C. dos Santos & José A. P. da Costa & Paula S. A. Michima & Allysson M. A. Caldas, 2020. "Absorption Refrigeration Systems Based on Ammonia as Refrigerant Using Different Absorbents: Review and Applications," Energies, MDPI, vol. 14(1), pages 1-41, December.
    6. Kwak, Dong-Hun & Binns, Michael & Kim, Jin-Kuk, 2014. "Integrated design and optimization of technologies for utilizing low grade heat in process industries," Applied Energy, Elsevier, vol. 131(C), pages 307-322.
    7. Sochard, Sabine & Castillo Garcia, Lorenzo & Serra, Sylvain & Vitupier, Yann & Reneaume, Jean-Michel, 2017. "Modelling a solar absorption chiller using positive flash to estimate the physical state of streams and theoretical plate concept for the generator," Renewable Energy, Elsevier, vol. 109(C), pages 121-134.
    8. Abed, Azher M. & Alghoul, M.A. & Sopian, K. & Majdi, Hasan Sh. & Al-Shamani, Ali Najah & Muftah, A.F., 2017. "Enhancement aspects of single stage absorption cooling cycle: A detailed review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 77(C), pages 1010-1045.

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