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Developing the dual system of wind chiller integrated with wind generator

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  • Ting, Chen-Ching
  • Lai, Chen-Wei
  • Huang, Chien-Bang
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    Abstract

    The successfully developed wind chiller in our CCT Lab. directly uses wind force to drive refrigeration system and hence reduces two times energy conversions between mechanical and electrical energies. The wind chiller needs high wind speed for its effective work due to the large working torque is required by the compressor. For the purpose of enlarging the applied wind field by the wind machine, this work aims to develop a dual system of wind chiller integrated with wind generator. The integrated wind generator can use the wind energy which cannot effectively drive the compressor. Therefore, the new developed dual system can apply larger range of the wind field and further increase the total working efficiency of the wind machine. A programmable logic controller (PLC) is applied in this wind forced dual system to select the wind chiller or the wind generator separately in terms of the rotational speed of the wind machine. In this work, the wind chiller is switched on while the accelerated rotational speed reaches 80Â rpm and off while the decelerated rotational speed reaches 60Â rpm. The integrated wind generator is switched on while the decelerated rotational speed reaches 60Â rpm and off while the decelerated rotational speed reaches 40Â rpm. The two apparatuses in the dual system always work separately. The results show that there is ca. 18.5% increment of effective working efficiency which is captured by the wind generator.

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    Bibliographic Info

    Article provided by Elsevier in its journal Applied Energy.

    Volume (Year): 88 (2011)
    Issue (Month): 3 (March)
    Pages: 741-747

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    Handle: RePEc:eee:appene:v:88:y:2011:i:3:p:741-747

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    Related research

    Keywords: Wind chiller Wind force Energy conversion Working efficiency Dual system;

    References

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    1. Welch, Jonathan B. & Venkateswaran, Anand, 2009. "The dual sustainability of wind energy," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(5), pages 1121-1126, June.
    2. Lin, Chyou-Jong & Yu, Oliver S. & Chang, Chung-Liang & Liu, Yuin-Hong & Chuang, Yuh-Fa & Lin, Yu-Liang, 2009. "Challenges of wind farms connection to future power systems in Taiwan," Renewable Energy, Elsevier, vol. 34(8), pages 1926-1930.
    3. Müller, Gerald & Jentsch, Mark F. & Stoddart, Euan, 2009. "Vertical axis resistance type wind turbines for use in buildings," Renewable Energy, Elsevier, vol. 34(5), pages 1407-1412.
    4. Thumthae, Chalothorn & Chitsomboon, Tawit, 2009. "Optimal angle of attack for untwisted blade wind turbine," Renewable Energy, Elsevier, vol. 34(5), pages 1279-1284.
    5. Lanzafame, R. & Messina, M., 2009. "Design and performance of a double-pitch wind turbine with non-twisted blades," Renewable Energy, Elsevier, vol. 34(5), pages 1413-1420.
    6. Whale, Jonathan, 2009. "Design and construction of a simple blade pitch measurement system for small wind turbines," Renewable Energy, Elsevier, vol. 34(2), pages 425-429.
    7. Wang, F. & Bai, L. & Fletcher, J. & Whiteford, J. & Cullen, D., 2008. "Development of small domestic wind turbine with scoop and prediction of its annual power output," Renewable Energy, Elsevier, vol. 33(7), pages 1637-1651.
    8. Vardar, Ali & Alibas, Ilknur, 2008. "Research on wind turbine rotor models using NACA profiles," Renewable Energy, Elsevier, vol. 33(7), pages 1721-1732.
    9. Chang, Tsang-Jung & Wu, Yu-Ting & Hsu, Hua-Yi & Chu, Chia-Ren & Liao, Chun-Min, 2003. "Assessment of wind characteristics and wind turbine characteristics in Taiwan," Renewable Energy, Elsevier, vol. 28(6), pages 851-871.
    10. Ting, Chen-Ching & Lee, Jing-Nang & Shen, Chun-Hong, 2008. "Development of a wind forced chiller and its efficiency analysis," Applied Energy, Elsevier, vol. 85(12), pages 1190-1197, December.
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