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Energy performance of a bedroom task/ambient air conditioning (TAC) system applied in different climate zones of China

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Listed:
  • Mao, Ning
  • Hao, Jingyu
  • Cui, Borui
  • Li, Yuxing
  • Song, Mengjie
  • Xu, Yingjie
  • Deng, Shiming

Abstract

Task/ambient air conditioning (TAC) system applied to bedrooms has been investigated and its energy efficient performance reported. To promote the application of bedroom TAC to a larger region, a numerical study was carried out on a bedroom TAC system applied in five different climate zones. To simplify the numerical study, response surface methodology (RSM) was used to predict operating power of TAC based on CFD results. It's found that the daily energy consumption in the typical day was from 0 kWh in Kunming to 1.27 kWh in Shanghai, the averaged daily energy consumption varied from 0.47 kWh in June to 0.56 kWh in August for Guangzhou, and the total energy consumption in summer ranged from 0 kWh in Kunming to 58.33 kWh in Guangzhou. Meanwhile, the operating time of the TAC were also different between these five cities. In order to save energy, different set points of toz (average air temperature in the occupied zone) were investigated. It's found that increasing the toz from 24 to 25 °C can reduce energy consumption by about 23.42% in Shanghai to 36.23% in Beijing. Besides, the energy saving potential using two operating modes were compared: variable air flow rate and variable air temperature.

Suggested Citation

  • Mao, Ning & Hao, Jingyu & Cui, Borui & Li, Yuxing & Song, Mengjie & Xu, Yingjie & Deng, Shiming, 2018. "Energy performance of a bedroom task/ambient air conditioning (TAC) system applied in different climate zones of China," Energy, Elsevier, vol. 159(C), pages 724-736.
    • Handle: RePEc:eee:energy:v:159:y:2018:i:c:p:724-736
    DOI: 10.1016/j.energy.2018.06.211
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    References listed on IDEAS

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    Cited by:

    1. Mao, Ning & Hao, Jingyu & He, Tianbiao & Song, Mengjie & Xu, Yingjie & Deng, Shiming, 2019. "PMV-based dynamic optimization of energy consumption for a residential task/ambient air conditioning system in different climate zones," Renewable Energy, Elsevier, vol. 142(C), pages 41-54.
    2. Chi, Fang'ai & Xu, Liming & Pan, Jiajie & Wang, Ruonan & Tao, Yekang & Guo, Yuang & Peng, Changhai, 2020. "Prediction of the total day-round thermal load for residential buildings at various scales based on weather forecast data," Applied Energy, Elsevier, vol. 280(C).
    3. Wang, Cheng & Guo, Xiaofeng & Zhu, Ye, 2019. "Energy saving with Optic-Variable Wall for stable air temperature control," Energy, Elsevier, vol. 173(C), pages 38-47.

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