Influence of ventilation-behavior during off-periods on energy-consumption for an intermittently heated room of dormitory buildings

Jia Yu, Yanming Kang, He Li, Ke Zhong and Zhai, Zhiqiang (John)

Energy, 2020, vol. 197, issue C

Abstract: An alternative analytical model, which is derived by means of Laplace-transform method and method of variation of constant, is proposed for quick calculations of transient temperatures of building envelopes and indoor air. The analytical model is further validated against field test data, and the cumulative variation of the root-mean-square error is less than 2.1%. Moreover, the effects of air change rate (ACH) caused by natural ventilation during the off-periods on heating energy consumption (HEC) in an intermittent heating (IH) room of dormitory buildings are investigated for the whole heating season in Shanghai in the Hot Summer and Cold Winter zone of China. The results reveal that the occupants’ ventilation behavior (or natural ventilation controlled by the occupants) during non-heating periods significantly decreases the inside surface temperatures of building envelopes, and thus increases the HEC. The influence of ACH during non-heating periods on the HEC of the IH room are quantified by using multiple regression method. The predictive model can provide a theoretical basis to make an informed decision about the trade-off between the preference for ventilation and the control of energy consumption, while has the limitation to analyze the HEC under occupants’ actual ventilation behavior.

Keywords: Intermittent heating; Occupant behavior; Thermal mass; Heating energy consumption; Multiple regression method (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:197:y:2020:i:c:s0360544220302103

DOI: 10.1016/j.energy.2020.117103

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