中国地理科学(英文版) ›› 2004, Vol. 14 ›› Issue (4): 343-349.

• 论文 • 上一篇    下一篇

THERMAL EFFECTS OF BUILDING′S EXTERNAL SURFACES IN CITY——Characteristics of Heat Flux into and out of External Wall Surfaces

ZHANG Yi-ping1, HE Yun-ling1,2, LIU Yu-hong1, MA You-xin1, LI You-rong1, DOU Jun-xia1,2,3   

  1. 1. Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, P. R. China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, P. R. China;
    3. Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing,100085,P.R.China
  • 收稿日期:2004-08-20 出版日期:2004-12-20 发布日期:2011-12-15
  • 作者简介:ZHANG Yi-ping(1957- ),male,a native of Kunming of Yunnan Province, professor, Ph.D., specialized in ecological climatology. E-mail: yipingzh@xtbg.ac.cn
  • 基金资助:

    Under the auspices of the National Natural Science Foundation of China (No.59836250) and the Natural Science Foundation of Yunnan Province, China (No.2003D0071M)

THERMAL EFFECTS OF BUILDING′S EXTERNAL SURFACES IN CITY——Characteristics of Heat Flux into and out of External Wall Surfaces

ZHANG Yi-ping1, HE Yun-ling1,2, LIU Yu-hong1, MA You-xin1, LI You-rong1, DOU Jun-xia1,2,3   

  1. 1. Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, P. R. China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, P. R. China;
    3. Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing,100085,P.R.China
  • Received:2004-08-20 Online:2004-12-20 Published:2011-12-15

摘要:

This study examined the thermal effects of building's external wall surfaces, using observational data of spatial-temporal distribution of surface temperature, air temperature, and heat flux into and out of external surface. Results indicate that external wall surface temperature and nearby air temperature vary with the change of orientation, height and season. In general, the external wall surface temperature is lower near the ground, and is higher near the roof, than nearby air temperature. But north wall surface temperature is mostly lower than nearby air temperature at the same height; south wall surface temperature during the daytime in December, and west wall surface temperature all day in August, is respectively higher than nearby air temperature. The heat fluxes into and out of external wall surfaces show the differences that exist in the various orientations, heights and seasons. In December, south wall surface at the lower sites emits heat and north wall surface at the higher sites absorbs heat. In April, all external wall surfaces, emit heat near the ground and absorb heat near the roof. In August, west wall surface all day emits heat, and other wall surfaces just show the commensurate behavior with that in April.

关键词: external wall surface, thermal effect, heat flux intensity, spatial-temporal distribution

Abstract:

This study examined the thermal effects of building′s external wall surfaces, using observational data of spatial-temporal distribution of surface temperature, air temperature, and heat flux into and out of external surface. Results indicate that external wall surface temperature and nearby air temperature vary with the change of orientation, height and season. In general, the external wall surface temperature is lower near the ground, and is higher near the roof, than nearby air temperature. But north wall surface temperature is mostly lower than nearby air temperature at the same height; south wall surface temperature during the daytime in December, and west wall surface temperature all day in August, is respectively higher than nearby air temperature. The heat fluxes into and out of external wall surfaces show the differences that exist in the various orientations, heights and seasons. In December, south wall surface at the lower sites emits heat and north wall surface at the higher sites absorbs heat. In April, all external wall surfaces, emit heat near the ground and absorb heat near the roof. In August, west wall surface all day emits heat, and other wall surfaces just show the commensurate behavior with that in April.

Key words: external wall surface, thermal effect, heat flux intensity, spatial-temporal distribution

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