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Journal of Renewable Energy
Volume 2013, Article ID 574196, 5 pages
Research Article

Investment and Economy Analysis of Water-Source Heat Pump System in Chongqing, China

1Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
2Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China

Received 17 October 2012; Revised 5 February 2013; Accepted 5 February 2013

Academic Editor: Abdurrahman Saydut

Copyright © 2013 Yong Ding 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.


In China, the application of renewable energy witnesses rapid development. In the near future, a lot of demonstration projects will be built and thus it is urgent to know the economics of renewable energy building application technologies. Based on the renewable energy demonstration projects in Chongqing city, the author discussed the economy issue of water-source heat pump system (WSHPs) in order to provide suggestions for the application projects. According to the design information of demonstration projects, the average incremental investment, allowance, and payback period are calculated in this paper. Comparing WSHPs with traditional heating, ventilation, and air conditioning (HVAC) system, the saved energy of WSHPs is estimated in the current paper. The author calculated the amount of saved energy in unit applied area and unit intake water. Besides, the economy and efficiency of WSHPs project is analyzed at the end of this paper.