Field study on thermal comfort and energy saving potential in 11 split air-conditioned office buildings in Changsha, China

Zhibin Wu, Nianping Li*, Pawel Wargocki, Jingqing Peng, Jingming Li, Haijiao Cui

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

All existing thermal comfort standards are applicable to naturally ventilated buildings and air-conditioned buildings, except mixed-mode buildings. Split air-conditioned buildings, as a type of mixed-mode buildings, account for a large proportion of current buildings. It is urgent to explore the applicability of thermal comfort standards and determine the energy saving potential in split air-conditioned buildings. In this research, the authors conducted a field study in Changsha, China. Eleven split air-conditioned office buildings were investigated from July to September 2016. 442 valid data sets were obtained. The results indicated that occupants preferred a “cooler” temperature of 26 °C, 0.6°Clower than neutral temperature of 26.7 °C. Occupants have adapted to thermal environment and accepted higher temperature than that predicted by PPD. 95% of occupants were satisfied with the thermal environment. Compared to PMV model, the adaptive model was more applicable to split air-conditioned buildings. 8.6% of cooling energy could be conserved during summer in split air-conditioned buildings.
Original languageEnglish
JournalEnergy
Volume182
Pages (from-to)471-482
ISSN0360-5442
DOIs
Publication statusPublished - 2019

Keywords

  • Adaptive model
  • Energy saving potential
  • PMV
  • SAC buildings
  • Thermal comfort

Cite this

Wu, Zhibin ; Li, Nianping ; Wargocki, Pawel ; Peng, Jingqing ; Li, Jingming ; Cui, Haijiao. / Field study on thermal comfort and energy saving potential in 11 split air-conditioned office buildings in Changsha, China. In: Energy. 2019 ; Vol. 182. pp. 471-482.
@article{c5bd45c6a07b4d19873cb36e8d65f74d,
title = "Field study on thermal comfort and energy saving potential in 11 split air-conditioned office buildings in Changsha, China",
abstract = "All existing thermal comfort standards are applicable to naturally ventilated buildings and air-conditioned buildings, except mixed-mode buildings. Split air-conditioned buildings, as a type of mixed-mode buildings, account for a large proportion of current buildings. It is urgent to explore the applicability of thermal comfort standards and determine the energy saving potential in split air-conditioned buildings. In this research, the authors conducted a field study in Changsha, China. Eleven split air-conditioned office buildings were investigated from July to September 2016. 442 valid data sets were obtained. The results indicated that occupants preferred a “cooler” temperature of 26 °C, 0.6°Clower than neutral temperature of 26.7 °C. Occupants have adapted to thermal environment and accepted higher temperature than that predicted by PPD. 95{\%} of occupants were satisfied with the thermal environment. Compared to PMV model, the adaptive model was more applicable to split air-conditioned buildings. 8.6{\%} of cooling energy could be conserved during summer in split air-conditioned buildings.",
keywords = "Adaptive model, Energy saving potential, PMV, SAC buildings, Thermal comfort",
author = "Zhibin Wu and Nianping Li and Pawel Wargocki and Jingqing Peng and Jingming Li and Haijiao Cui",
year = "2019",
doi = "10.1016/j.energy.2019.05.204",
language = "English",
volume = "182",
pages = "471--482",
journal = "Energy",
issn = "0360-5442",
publisher = "Elsevier",

}

Field study on thermal comfort and energy saving potential in 11 split air-conditioned office buildings in Changsha, China. / Wu, Zhibin; Li, Nianping; Wargocki, Pawel; Peng, Jingqing; Li, Jingming; Cui, Haijiao.

In: Energy, Vol. 182, 2019, p. 471-482.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Field study on thermal comfort and energy saving potential in 11 split air-conditioned office buildings in Changsha, China

AU - Wu, Zhibin

AU - Li, Nianping

AU - Wargocki, Pawel

AU - Peng, Jingqing

AU - Li, Jingming

AU - Cui, Haijiao

PY - 2019

Y1 - 2019

N2 - All existing thermal comfort standards are applicable to naturally ventilated buildings and air-conditioned buildings, except mixed-mode buildings. Split air-conditioned buildings, as a type of mixed-mode buildings, account for a large proportion of current buildings. It is urgent to explore the applicability of thermal comfort standards and determine the energy saving potential in split air-conditioned buildings. In this research, the authors conducted a field study in Changsha, China. Eleven split air-conditioned office buildings were investigated from July to September 2016. 442 valid data sets were obtained. The results indicated that occupants preferred a “cooler” temperature of 26 °C, 0.6°Clower than neutral temperature of 26.7 °C. Occupants have adapted to thermal environment and accepted higher temperature than that predicted by PPD. 95% of occupants were satisfied with the thermal environment. Compared to PMV model, the adaptive model was more applicable to split air-conditioned buildings. 8.6% of cooling energy could be conserved during summer in split air-conditioned buildings.

AB - All existing thermal comfort standards are applicable to naturally ventilated buildings and air-conditioned buildings, except mixed-mode buildings. Split air-conditioned buildings, as a type of mixed-mode buildings, account for a large proportion of current buildings. It is urgent to explore the applicability of thermal comfort standards and determine the energy saving potential in split air-conditioned buildings. In this research, the authors conducted a field study in Changsha, China. Eleven split air-conditioned office buildings were investigated from July to September 2016. 442 valid data sets were obtained. The results indicated that occupants preferred a “cooler” temperature of 26 °C, 0.6°Clower than neutral temperature of 26.7 °C. Occupants have adapted to thermal environment and accepted higher temperature than that predicted by PPD. 95% of occupants were satisfied with the thermal environment. Compared to PMV model, the adaptive model was more applicable to split air-conditioned buildings. 8.6% of cooling energy could be conserved during summer in split air-conditioned buildings.

KW - Adaptive model

KW - Energy saving potential

KW - PMV

KW - SAC buildings

KW - Thermal comfort

U2 - 10.1016/j.energy.2019.05.204

DO - 10.1016/j.energy.2019.05.204

M3 - Journal article

VL - 182

SP - 471

EP - 482

JO - Energy

JF - Energy

SN - 0360-5442

ER -