Performance research of a micro-CCHP system with adsorption chiller |
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| Authors: | Xiang-qiang Kong Ru-zhu Wang Ying Li Jing-yi Wu |
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| Institution: | [1]School of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266510, Shandong, China [2]Institute of Refrigeration and Cryogenics, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | This paper describes a new micro-combined cooling, heating and power (CCHP) system, which is especially suitable for domestic
and light commercial applications. It mainly consists of a natural gas-fired internal combustion engine, a silica gel-water
adsorption chiller and other heat recovery units. In order to study the energy efficiency and economic feasibility, an experimental
investigation has been carried out. The experimental system has a rated electricity power of 12 kW, a rated cooling capacity
of 9 kW and a rated heating capacity of 28 kW. Evaluation and analysis of the system are discussed in detail. The testing
results show that the energy efficiency of the overall system depends on different modes. The overall thermal and electrical
efficiency is over 70%. Higher heat load supplied causes higher efficiency of the system. Economic evaluation shows that the
micro-CCHP system enjoys a small capital cost and short payback period, which is easily accepted by customers. At current
natural gas price of 1.9 RMB/m3 (nominal condition) and electric price of 0.754 RMB/(kW·h), the total capital cost is only 90 000 RMB with a payback period
of 3.21 years. |
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| Keywords: | micro-CCHP gas engine adsorption chiller performance |
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