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Comparative study of internal storage and external storage absorption cooling systems

Author

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  • Soutullo, S.
  • San Juan, C.
  • Heras, M.R.

Abstract

This work presents a comparative study of the performance of absorption cooling systems with internal storage and with external storage. A full dynamic simulation model including the solar collector field, the absorption heat pump system and the building loads has been performed. The first system is composed by four heat pumps that store energy in the form of crystallized salts so that no external storage capacity is required. The second one is a conventional system composed of one liquid absorption pump and external storage in a water tank. Many batteries of simulations have been done to evaluate the performance of these cooling machines when varying solar field surface, solar collector’s efficiency curve and the storage capacity of the systems. Two different indices have been calculated to analyze the response of both systems: Solar Fraction and Primary Energy Ratio. The comparison between both absorption chillers indicates that in order to reach similar values of storage energy, conventional system has a greater room requirement than four units with internal storage working in parallel, requiring an external water tank of at least 15 m3.

Suggested Citation

  • Soutullo, S. & San Juan, C. & Heras, M.R., 2011. "Comparative study of internal storage and external storage absorption cooling systems," Renewable Energy, Elsevier, vol. 36(5), pages 1645-1651.
    • Handle: RePEc:eee:renene:v:36:y:2011:i:5:p:1645-1651
    DOI: 10.1016/j.renene.2010.11.017
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    Cited by:

    1. María-José Suárez López & Jesús-Ignacio Prieto & Eduardo Blanco & David García, 2020. "Tests of an Absorption Cooling Machine at the Gijón Solar Cooling Laboratory," Energies, MDPI, vol. 13(15), pages 1-13, August.
    2. Kojok, Farah & Fardoun, Farouk & Younes, Rafic & Outbib, Rachid, 2016. "Hybrid cooling systems: A review and an optimized selection scheme," Renewable and Sustainable Energy Reviews, Elsevier, vol. 65(C), pages 57-80.
    3. Yu, N. & Wang, R.Z. & Lu, Z.S. & Wang, L.W. & Ishugah, T.F., 2014. "Evaluation of a three-phase sorption cycle for thermal energy storage," Energy, Elsevier, vol. 67(C), pages 468-478.

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