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Experimental evaluation of a low-power direct air-cooled double-effect LiBr–H2O absorption prototype

Author

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  • Izquierdo, M.
  • Marcos, J.D.
  • Palacios, M.E.
  • González-Gil, A.

Abstract

This paper describes a new small air-cooled double-effect LiBr–H2O absorption prototype directly powered by fuel and discusses the experimental findings for some tests carried out in Madrid in 2007, with natural gas as energy source. The prototype, which has been designed to supply 7kW of cooling power, was able to chill water up to 7–18°C under extreme outdoor temperatures. A new flat-sheet adiabatic absorber was used allowing it to operate at outdoor temperatures about 45°C without any sign of crystallization. A mean daily coefficient of performance (COP) of about 1.05 was obtained. Since this absorption machine does not need cooling tower, there is neither water consumption nor Legionella pollution. Moreover, it is a quite compact unit. The ratio of cooling power over volume is about 6.0kW/m3, while for the only air-cooled absorption chiller, Rotartica 045v, in the marked until 2009 this ratio is 4kW/m3. When comparing with electric chillers presently on the market, this prototype was found to have a cooling cost approximately 15.9% higher and an environmental impact 16.7% lower. The absorption prototype is a more environmentally friendly solution as it does not emit fluorinated refrigerants.

Suggested Citation

  • Izquierdo, M. & Marcos, J.D. & Palacios, M.E. & González-Gil, A., 2012. "Experimental evaluation of a low-power direct air-cooled double-effect LiBr–H2O absorption prototype," Energy, Elsevier, vol. 37(1), pages 737-748.
    • Handle: RePEc:eee:energy:v:37:y:2012:i:1:p:737-748
    DOI: 10.1016/j.energy.2011.10.004
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    References listed on IDEAS

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    1. Lund, Henrik, 2007. "Renewable energy strategies for sustainable development," Energy, Elsevier, vol. 32(6), pages 912-919.
    2. Izquierdo, M. & Moreno-Rodríguez, A. & González-Gil, A. & García-Hernando, N., 2011. "Air conditioning in the region of Madrid, Spain: An approach to electricity consumption, economics and CO2 emissions," Energy, Elsevier, vol. 36(3), pages 1630-1639.
    3. Gonçalves da Silva, C., 2010. "Renewable energies: Choosing the best options," Energy, Elsevier, vol. 35(8), pages 3179-3193.
    4. Palacios, E. & Izquierdo, M. & Marcos, J.D. & Lizarte, R., 2009. "Evaluation of mass absorption in LiBr flat-fan sheets," Applied Energy, Elsevier, vol. 86(12), pages 2574-2582, December.
    5. Lior, Noam, 2010. "Sustainable energy development: The present (2009) situation and possible paths to the future," Energy, Elsevier, vol. 35(10), pages 3976-3994.
    Full references (including those not matched with items on IDEAS)

    Citations

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    Cited by:

    1. Allouhi, A. & Kousksou, T. & Jamil, A. & Bruel, P. & Mourad, Y. & Zeraouli, Y., 2015. "Solar driven cooling systems: An updated review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 44(C), pages 159-181.
    2. Prieto, Alejandro & Knaack, Ulrich & Auer, Thomas & Klein, Tillmann, 2019. "COOLFACADE: State-of-the-art review and evaluation of solar cooling technologies on their potential for façade integration," Renewable and Sustainable Energy Reviews, Elsevier, vol. 101(C), pages 395-414.
    3. González-Gil, A. & Izquierdo, M. & Marcos, J.D. & Palacios, E., 2012. "New flat-fan sheets adiabatic absorber for direct air-cooled LiBr/H2O absorption machines: Simulation, parametric study and experimental results," Applied Energy, Elsevier, vol. 98(C), pages 162-173.
    4. Ramzy, Ahmed K. & Kadoli, Ravikiran & T.P., Ashok Babu, 2013. "Experimental and theoretical investigations on the cyclic operation of TSA cycle for air dehumidification using packed beds of silica gel particles," Energy, Elsevier, vol. 56(C), pages 8-24.
    5. Privat, Romain & Qian, Jun-Wei & Alonso, Dominique & Jaubert, Jean-Noël, 2013. "Quest for an efficient binary working mixture for an absorption-demixing heat transformer," Energy, Elsevier, vol. 55(C), pages 594-609.
    6. Bigham, Sajjad & Yu, Dazhi & Chugh, Devesh & Moghaddam, Saeed, 2014. "Moving beyond the limits of mass transport in liquid absorbent microfilms through the implementation of surface-induced vortices," Energy, Elsevier, vol. 65(C), pages 621-630.
    7. Xu, Z.Y. & Wang, R.Z. & Xia, Z.Z., 2013. "A novel variable effect LiBr-water absorption refrigeration cycle," Energy, Elsevier, vol. 60(C), pages 457-463.
    8. Wonchala, Jason & Hazledine, Maxwell & Goni Boulama, Kiari, 2014. "Solution procedure and performance evaluation for a water–LiBr absorption refrigeration machine," Energy, Elsevier, vol. 65(C), pages 272-284.
    9. Han, Youhua & Li, Ming & Wang, Yunfeng & Li, Guoliang & Ma, Xun & Wang, Rui & Wang, Liang, 2019. "Impedance matching control strategy for a solar cooling system directly driven by distributed photovoltaics," Energy, Elsevier, vol. 168(C), pages 953-965.
    10. 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.
    11. Xu, Z.Y. & Wang, R.Z., 2014. "Experimental verification of the variable effect absorption refrigeration cycle," Energy, Elsevier, vol. 77(C), pages 703-709.
    12. Xiao, Lei & Luo, Kaiqi & Zhao, Dong & Wu, Zhanghua & Xu, Jingyuan & Luo, Ercang, 2024. "A highly efficient heat-driven thermoacoustic cooling system: Detailed study," Energy, Elsevier, vol. 293(C).
    13. Izquierdo, M. & González-Gil, A. & Palacios, E., 2014. "Solar-powered single-and double-effect directly air-cooled LiBr–H2O absorption prototype built as a single unit," Applied Energy, Elsevier, vol. 130(C), pages 7-19.

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