Indoor environmental quality and energy consumption real-time assessment: A field measurement of a nearly zero-energy building in cold region of China

Zhijian Liu*, Qingxu Zhou, Hang Yin, Wei Xu, Xinyan Yang, Jun Gao

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The paper presents a two-year field measurement and assessment of a nearly zero-energy Building in cold zones of China. These parameters of indoor environment quality (IEQ) and electricity consumption for HVAC are recorded. According to the measurement data, the most of indoor temperature was controlled in the range of 23 °C ~ 26 °C and relative humidity (RH) mainly fluctuates within the range of 30% ~ 60%. The concentrations of carbon dioxide (CO2) and particulate matter (PM2.5) are lower than the relevant standard requirements in most of the time. The average electricity consumption for HVAC was 33.05kWh/(m2·a) and the heating and cooling demands could be reduced by 55.2% and 54.0%, respectively, compared with existing buildings. In general, the NZEB can provide indoor comfortable thermal environment and indoor air quality with less energy demand, but the overheating problem in summer and effect of occupant behavior should be especially paid attention during operation. Overall, the experience from the actual operation of NZEBs will help China to reach its goals of reducing carbon emissions and addressing climate change through realizing the energy-saving potential of NZEBs.

Original languageEnglish
Article number111093
JournalEnergy and Buildings
Volume246
Number of pages16
ISSN0378-7788
DOIs
Publication statusPublished - 2021

Keywords

  • Big data and measurements
  • China
  • Cold zones
  • Energy use
  • NZE buildings
  • Quality of indoor environment

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