Indoor thermal environment and energy saving for urban residential buildings in China

Hiroshi Yoshino, Yasuko Yoshino, Qingyuan Zhang, Akashi Mochida, Nianping Li, Zhenhai Li, Hiroyuki Miyasaka

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

The purpose of this survey is to investigate the actual conditions of the residential indoor thermal environment in urban areas in China for evaluating thermal comfort and predicting the energy conservation feasibility for space heating and cooling. The apartment homes under investigation were located in the urban areas of nine major cities. The questionnaire survey revealed building characteristics, the types of space heating and cooling system in use, aspects of life style, during winter and summer seasons, and so on. The measurement showed that winter indoor temperatures in Harbin, Urumqi, Beijing and Xi'an remain at a relatively stable level near 20 °C due to the central heating system installed. However in the other cities lacking central heating systems, indoor temperatures fluctuated as a function of the change of outdoor temperature. On the other hand, summer indoor evening temperatures in Shanghai, Changsha, Chongqing and Hong Kong were higher than the comfort zone of ASHRAE. Therefore it is expected that energy use for space heating and cooling in the southern China will increase in the near future because of occupants' requirement for comfortable indoor environment. Based on the results yielded by this study, in Beijing the calculation of space heating and cooling loads indicated that the energy used to heat indoor spaces can be halved by installing thermal insulation and properly sealing the building.

Original languageEnglish
Pages (from-to)1308-1319
Number of pages12
JournalEnergy and Buildings
Volume38
Issue number11
DOIs
Publication statusPublished - 2006 Nov 1

Keywords

  • China
  • Field measurement
  • Indoor thermal environment
  • Questionnaire survey
  • Residential building

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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