Energy Consumption and Indoor Environment Evaluation of Large Irregular Commercial Green Buildings

Strategic Insights -

A recent study conducted in Dalian, People's Republic of China, has highlighted the significant energy consumption and carbon emissions of commercial buildings, particularly large irregular commercial buildings with complex space and dense occupation. The research, led by Yuan Su from Dalian University of Technology, investigated the energy consumption and indoor physical environment of a large-scale green commercial building in Dalian, a coastal city in the cold zone of China. The findings showed that the building's energy consumption was 68.02 kWh/m2, exceeding the standard requirements, and its carbon emission was 74.76 kgCO2/m2. The indoor environmental quality and service satisfaction were also low, with less than 10% of humidity in summer falling within the expected range.

Key Takeaways:

  • The energy consumption of the large irregular commercial green building was 68.02 kWh/m2, exceeding the standard requirements.
  • The building's carbon emission was 74.76 kgCO2/m2, a significant contributor to greenhouse gases.
  • The indoor environmental quality and service satisfaction were low, with less than 10% of humidity in summer within the expected range.
  • The building's energy consumption and carbon emission were not meeting the design targets due to complex space and dense occupation.
  • The study proposed promotion strategies for holistic design to optimize building operational conditions and improve indoor environment.
  • The findings provide recommendations and guidelines for optimizing carbon emission and indoor environment in similar commercial buildings.
  • The research highlights the importance of considering building design and operation in the context of climate and user needs.

Statistics:

  • Energy consumption: 68.02 kWh/m2
  • Carbon emission: 74.76 kgCO2/m2
  • Humidity in summer: less than 10% within the expected range
  • Lowest value of PM2.5 concentration in winter: 28.3%
  • Score of indoor environmental quality and service satisfaction: low

Sources:

  • Energy Consumption and Indoor Environment Evaluation of Large Irregular Commercial Green Building In Dalian, China. Energy and Buildings, 2022; 276.
  • Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland
  • Dalian University of Technology, Sch Architecture & Fine Art, Dalian 116024, People's Republic of China
  • Yuan Su, et al. "Findings from Dalian University of Technology Update Knowledge of Energy and Buildings" Global Warming Focus, December 5, 2022.