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Cool roofs in China: Policy review, building simulations, and proof-of-concept experiments

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  • Gao, Yafeng
  • Xu, Jiangmin
  • Yang, Shichao
  • Tang, Xiaomin
  • Zhou, Quan
  • Ge, Jing
  • Xu, Tengfang
  • Levinson, Ronnen

Abstract

While the concept of reflective roofing is not new to China, most Chinese cool roof research has taken place within the past decade. Some national and local Chinese building energy efficiency standards credit or recommend, but do not require, cool roofs or walls. EnergyPlus simulations of standard-compliant Chinese office and residential building prototypes in seven Chinese cities (Harbin, Changchun, Beijing, Chongqing, Shanghai, Wuhan, and Guangzhou) showed that substituting an aged white roof (albedo 0.6) for an aged gray roof (albedo 0.2) yields positive annual load, energy, energy cost, CO2, NOx, and SO2 savings in all hot-summer cities (Chongqing, Shanghai, Wuhan, and Guangzhou).

Suggested Citation

  • Gao, Yafeng & Xu, Jiangmin & Yang, Shichao & Tang, Xiaomin & Zhou, Quan & Ge, Jing & Xu, Tengfang & Levinson, Ronnen, 2014. "Cool roofs in China: Policy review, building simulations, and proof-of-concept experiments," Energy Policy, Elsevier, vol. 74(C), pages 190-214.
    • Handle: RePEc:eee:enepol:v:74:y:2014:i:c:p:190-214
    DOI: 10.1016/j.enpol.2014.05.036
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    References listed on IDEAS

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