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New Perspective on Performances and Limits of Solar Fresh Air Cooling in Different Climatic Conditions

Author

Listed:
  • Ancuta C. Abrudan

    (Department of Building Services, Technical University of Cluj-Napoca, Bd. 21 Decembrie 1989 128-130, 400604 Cluj-Napoca, Romania)

  • Octavian G. Pop

    (Department of Mechanical Engineering, Technical University of Cluj-Napoca, Bd. Muncii 103-105, 400461 Cluj-Napoca, Romania)

  • Alexandru Serban

    (Department of Thermal Engineering, University Politehnica of Bucharest, Splaiul Independentei, 313, 060042 Bucharest, Romania)

  • Mugur C. Balan

    (Department of Mechanical Engineering, Technical University of Cluj-Napoca, Bd. Muncii 103-105, 400461 Cluj-Napoca, Romania)

Abstract

The study carried out by simulation, concerns the thermal behavior of an office building’s solar fresh air cooling system, based on a LiBr-H 2 O absorption chiller in different climatic conditions. The coefficient of performance (COP) and the solar fraction were considered performance parameters and were analyzed with respect to the operating limits—the risk of crystallization and maintaining at least a minimum degassing zone. A new correlation between the required solar hot temperature and the cooling water temperature was established and then embedded in another new correlation between the COP and the cooling water temperature that was used in simulations during the whole cooling season corresponding to each location. It was found that—the solar hot water should be maintained in the range of (80–100) °C depending on the cooling water temperature, the COP of the solar LiBr-H 2 O absorption chiller with or without cold storage tank could reach (76.5–82.4)% depending on the location, and the solar fraction could reach (29.5–62.0)% without cold storage tank and could exceed 100% with cold storage tank, and the excess cooling power being available to cover other types of cooling loads—through the building envelope, from lighting, and from occupants, etc.

Suggested Citation

  • Ancuta C. Abrudan & Octavian G. Pop & Alexandru Serban & Mugur C. Balan, 2019. "New Perspective on Performances and Limits of Solar Fresh Air Cooling in Different Climatic Conditions," Energies, MDPI, vol. 12(11), pages 1-22, June.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:11:p:2113-:d:236645
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    References listed on IDEAS

    as
    1. Badescu, Viorel & Laaser, Nadine & Crutescu, Ruxandra & Crutescu, Marin & Dobrovicescu, Alexandru & Tsatsaronis, George, 2011. "Modeling, validation and time-dependent simulation of the first large passive building in Romania," Renewable Energy, Elsevier, vol. 36(1), pages 142-157.
    2. Pop, Octavian G. & Fechete Tutunaru, Lucian & Bode, Florin & Abrudan, Ancuţa C. & Balan, Mugur C., 2018. "Energy efficiency of PCM integrated in fresh air cooling systems in different climatic conditions," Applied Energy, Elsevier, vol. 212(C), pages 976-996.
    3. Jesús Cerezo & Rosenberg J. Romero & Jonathan Ibarra & Antonio Rodríguez & Gisela Montero & Alexis Acuña, 2018. "Dynamic Simulation of an Absorption Cooling System with Different Working Mixtures," Energies, MDPI, vol. 11(2), pages 1-19, January.
    4. Yunlong Ma & Suvash C. Saha & Wendy Miller & Lisa Guan, 2017. "Comparison of Different Solar-Assisted Air Conditioning Systems for Australian Office Buildings," Energies, MDPI, vol. 10(10), pages 1-27, September.
    5. Jorge J. Chan & Roberto Best & Jesús Cerezo & Mario A. Barrera & Francisco R. Lezama, 2018. "Experimental Study of a Bubble Mode Absorption with an Inner Vapor Distributor in a Plate Heat Exchanger-Type Absorber with NH 3 -LiNO 3," Energies, MDPI, vol. 11(8), pages 1-16, August.
    6. Alejandro Prieto & Ulrich Knaack & Thomas Auer & Tillmann Klein, 2018. "Feasibility Study of Self-Sufficient Solar Cooling Façade Applications in Different Warm Regions," Energies, MDPI, vol. 11(6), pages 1-18, June.
    7. Jiangjiang Wang & Rujing Yan & Zhuang Wang & Xutao Zhang & Guohua Shi, 2018. "Thermal Performance Analysis of an Absorption Cooling System Based on Parabolic Trough Solar Collectors," Energies, MDPI, vol. 11(10), pages 1-17, October.
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