NR  Vol.5 No.12 , September 2014
Dual-Roof Solar Greenhouse—A Novel Design for Improving the Heat Preserving Capacity in Northern China
Author(s) Lilong Chai1,2*, Baoju Wang1,2, Mingchi Liu1,2*, Zhanhui Wu1,2, Yong Xu1
ABSTRACT
Dual-roof solar greenhouse, a new of solar greenhouse, was designed in this study intending to reduce heat loss in cold time and improve land use efficiency in Beijing, the Capital city of China. Designing and applying the dual-roof greenhouse in metropolitan area had dual effects of saving energy and enhancing land use efficiency. According to the monitoring study and analysis conducted in winter of 2012, the averaged night temperature of south room was about 12.1°C in December, which was satisfying for growing average leaf vegetables. Total energy saved by dual-roof in whole winter was quantified as 1.1 × 107 MJ&#46yr-1 (winter), potentially about 37.4 t coal was saved in Beijing area during whole winter-growing period. Considering the application of north room, the land use efficiency was improved by 62.5% in dual-roof solar greenhouse.

Cite this paper
Chai, L. , Wang, B. , Liu, M. , Wu, Z. and Xu, Y. (2014) Dual-Roof Solar Greenhouse—A Novel Design for Improving the Heat Preserving Capacity in Northern China. Natural Resources, 5, 681-686. doi: 10.4236/nr.2014.512059.
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