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International Journal of Photoenergy - Volume 2017 2017, Article ID 2053146, 11 pages - https:-doi.org-10.1155-2017-2053146

Research Article

College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China

Institute of Building Environment and Energy, China Academy of Building Research, Beijing 100013, China

Correspondence should be addressed to Xinyu Zhang

Received 5 January 2017; Revised 21 April 2017; Accepted 18 May 2017; Published 18 July 2017

Academic Editor: Michel Feidt

Copyright © 2017 Zhifeng Sun et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The building sector accounts for more than 40% of the global energy consumption. This consumption may be lowered by reducing building energy requirements and using renewable energy in building energy supply systems. Therefore, a nearly zero-energy building, incorporating a solar heating and cooling system, was designed and built in Beijing, China. The system included a 35.17 kW cooling 10-RT absorption chiller, an evacuated tube solar collector with an aperture area of 320.6 m

, two hot-water storage tanks with capacities of 10 m

and 30 m

, respectively, two cold-water storage tanks both with a capacity of 10 m

, and a 281 kW cooling tower. Heat pump systems were used as a backup. At a value of 25.2%, the obtained solar fraction associated with the cooling load was close to the design target of 30%. In addition, the daily solar collector efficiency and the chiller coefficient of performance COP varied from 0.327 to 0.507 and 0.49 to 0.70, respectively.





Autor: Zhifeng Sun, Yaohua Zhao, Wei Xu, Xinyu Zhang, Huai Li, Min Wang, Tao He, and Dongxu Wang

Fuente: https://www.hindawi.com/



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