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Adaptive full-range decoupled ventilation strategy and air-conditioning systems for cleanrooms and buildings requiring strict humidity control and their performance evaluation

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  • Zhuang, Chaoqun
  • Wang, Shengwei
  • Shan, Kui

Abstract

The air-conditioning systems in buildings and spaces, such as cleanrooms, requiring strict space humidity control are usually energy intensive, where significant energy wastes often occur due to improper system design and control. Dedicated outdoor air ventilation strategy, as the most recommended solution today, offers good energy performance by fully decoupling the cooling and dehumidification process. But its energy saving potential is restricted to a range of working conditions, due to the excessive outdoor air intake, it cannot provide energy-efficient operation when the internal latent load and ambient enthalpy are high. This paper therefore proposes a novel “adaptive full-range decoupled ventilation strategy”, which offers optimized energy-efficient operation by incorporating the advantages of different ventilation strategies and adopting an adaptive economizer. This study also addresses the design of the air-conditioning systems for the implementation of the proposed ventilation strategy. The energy performance and economic analysis of the air-conditioning systems adopting the proposed ventilation strategy are investigated and compared with most updated strategies available. Results show that the proposed ventilation strategy can offer superior energy performance over the full range of internal load and weather conditions while the initial cost is even lower than that for the most recommended ventilation strategy today.

Suggested Citation

  • Zhuang, Chaoqun & Wang, Shengwei & Shan, Kui, 2019. "Adaptive full-range decoupled ventilation strategy and air-conditioning systems for cleanrooms and buildings requiring strict humidity control and their performance evaluation," Energy, Elsevier, vol. 168(C), pages 883-896.
    • Handle: RePEc:eee:energy:v:168:y:2019:i:c:p:883-896
    DOI: 10.1016/j.energy.2018.11.147
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    References listed on IDEAS

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    Cited by:

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    3. Wang, Cuiling & Wang, Baolong & Cui, Mengdi & Wei, Falin, 2023. "Optimal fresh-air utilization strategy for constant temperature and humidity air-conditioning system based on isocost line," Energy, Elsevier, vol. 263(PD).
    4. Simon Li, 2023. "Review of Engineering Controls for Indoor Air Quality: A Systems Design Perspective," Sustainability, MDPI, vol. 15(19), pages 1-46, September.
    5. Qu, Ke & Barreto, Germilly & Iten, Muriel & Wang, Yuhao & Riffat, Saffa, 2023. "Energy and thermal performance of optimised hollow fibre liquid desiccant cooling and dehumidification systems in mediterranean regions: Modelling, validation and case study," Energy, Elsevier, vol. 263(PC).
    6. Tang, Rui & Wang, Shengwei & Li, Hangxin, 2019. "Game theory based interactive demand side management responding to dynamic pricing in price-based demand response of smart grids," Applied Energy, Elsevier, vol. 250(C), pages 118-130.
    7. Zhuang, Chaoqun & Wang, Shengwei, 2020. "Risk-based online robust optimal control of air-conditioning systems for buildings requiring strict humidity control considering measurement uncertainties," Applied Energy, Elsevier, vol. 261(C).
    8. Yan, Tian & Sun, Zhongwei & Xu, Xinhua & Wan, Hang & Huang, Gongsheng, 2019. "Development of a simplified dynamic moisture transfer model of building wall layer of hygroscopic material," Energy, Elsevier, vol. 183(C), pages 1278-1294.

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