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| A Novel Oil-Evaporative Liquid Cooler in Urban Substations |
| Niu Wenhao1, 2, Zhang Guoqiang1, Jiang Yimin3, Lu Ru4, Wang Jianzhong5 |
| 1. Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China; 2. University of Chinese Academy of Sciences Beijing 100190 China; 3. East China Grid Limited Shanghai 200090 China; 4. Shanghai Municipal Electric Power Company Shanghai 200002 China; 5. Changshu Youbang Radiator Co. Ltd Changshu 215534 China |
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Abstract Decades of experience in underground substations indicated that the traditional cooling technologies have their own shortcomings. Therefore, this paper presents a novel cooling technology, which could be considered as a two-step cooling system, and can effectively transport heat energy from thermal sources underground to radiators on the ground by phase changing of evaporative liquid in an oil-evaporative cooler. The self-circulation of evaporative liquid makes the whole cooling system of high reliability, high cooling efficiency and low noise. This novel cooling technology is verified by designing, founding and testing a prototype of oil-evaporative liquid cooling system on a thermal test platform. The experimental result is compared with theoretical calculation, and the error is analyzed.
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Received: 02 February 2013
Published: 05 November 2014
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2014, Vol. 29 
