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Heat transfer studies on a GAXAC (generator-absorber-exchange absorption compression) cooler

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  • Rameshkumar, A.
  • Udayakumar, M.
  • Saravanan, R.

Abstract

A detailed heat transfer model of GAXAC (generator-absorber-exchange absorption compression) cycle using ammonia-water as working fluid is reported. The effect of UA (heat transfer conductance, kW/K) of each component on COP and cycle capacity is investigated. The results show that UA of the absorber and high temperature generator (HTG) have significant impact on COP and cycle capacity. For a capacity of 11.56Â kW, the maximized COP with minimum UA value for all heat exchanging components is found to be 1.185. Further the effect of mass flow rate and inlet temperatures of hot fluid, chilled water and cooling water are also investigated.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:appene:v:86:y:2009:i:10:p:2056-2064
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    References listed on IDEAS

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    2. Lisong Wang & Lijuan He & Yijian He, 2024. "Review on Absorption Refrigeration Technology and Its Potential in Energy-Saving and Carbon Emission Reduction in Natural Gas and Hydrogen Liquefaction," Energies, MDPI, vol. 17(14), pages 1-51, July.
    3. Yari, Mortaza & Zarin, Arash & Mahmoudi, S.M.S., 2011. "Energy and exergy analyses of GAX and GAX hybrid absorption refrigeration cycles," Renewable Energy, Elsevier, vol. 36(7), pages 2011-2020.
    4. Han, Wei & Sun, Liuli & Zheng, Danxing & Jin, Hongguang & Ma, Sijun & Jing, Xuye, 2013. "New hybrid absorption–compression refrigeration system based on cascade use of mid-temperature waste heat," Applied Energy, Elsevier, vol. 106(C), pages 383-390.
    5. Wu, Wei & Shi, Wenxing & Wang, Jian & Wang, Baolong & Li, Xianting, 2016. "Experimental investigation on NH3–H2O compression-assisted absorption heat pump (CAHP) for low temperature heating under lower driving sources," Applied Energy, Elsevier, vol. 176(C), pages 258-271.
    6. Jawahar, C.P. & Saravanan, R., 2010. "Generator absorber heat exchange based absorption cycle--A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(8), pages 2372-2382, October.
    7. Dong, Li & Zheng, Danxing & Nie, Nan & Li, Yun, 2012. "Performance prediction of absorption refrigeration cycle based on the measurements of vapor pressure and heat capacity of H2O+[DMIM]DMP system," Applied Energy, Elsevier, vol. 98(C), pages 326-332.

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