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  2013, Vol. 31 Issue (31): 53-56    DOI: 10.3981/j.issn.1000-7857.2013.31.008
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Design Calculation Methods of Coaxial Pipe Type Ground Heat Exchanger
GONG Guangcai1, CHEN Fan1, SU Huan1, YI Zhiping2
1. College of Civil Engineering, Hunan University, Changsha 410082, China;2. Changsha Polar Bear Energy Saving and Environmental Protection Technology Co. Ltd., Changsha 410000, China

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