Chinese kangs and building energy consumption |
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Authors: | YuGuo Li Zhi Zhuang JiaPing Liu |
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Institution: | (1) Department of Mechanical Engineering, the University of Hong Kong, Pokfulam Road, Hong Kong SAR, China;(2) Building Environment and New Energy Resource Laboratory, Dalian University of Technology, Dalian, 1106024, China;(3) School of Architecture, Xi’an Architectural Technology University, Xi’an, 710005, China |
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Abstract: | Chinese kangs are an integrated system for cooking, sleeping and heating in rural Northern China with more than 2000 years
history. In 2004 there were 67 million Chinese kangs used by 44 million rural families or 174 million people. Chinese kangs
store surplus heat from stove during cooking and releases it later for both home heating and localized bed heating. Such a
widely used heating system has been rarely studied. Understanding kangs is important for developing new effective home heating
systems for better energy efficiency and improving indoor air quality in Northern China. In this paper, we review and present
some preliminary results from our field measurement and mathematical modeling, and discuss the development of Chinese kangs
as related to future energy consumption in rural homes, and building energy consumption in China in general. We suggest that
transition and new technologies for rural home heating in Northern China, i.e. the future of Chinese kangs, should be considered
as the top priority in managing future building energy consumption in China.
Supported by the grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Grant No. HKU
7154/05E) and National Natural Science Foundation of China 2007 Young Researcher Award (Grant No. 50729803) The work is also
a part of the International Energy Agency Annex 44 project on Integrating Environmentally Responsive Elements in Buildings. |
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Keywords: | Building energy efficiency rural energy home heating Chinese kang elevated kang indoor air quality |
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