| Summary: | Construction and application of large environment simulation system has been developed greatly about Climate Wind Tunnel (CWT), so it is particularly urgent to reduce energy consumption of system operation. In the article, taking a large vehicle CWT as an example, analyzing key factors affecting the operation of laboratory, and optimizing the cooling source design of the environmental simulation of the cooling (or heating) system. By experimenting with the system before and after the optimization, collecting test data including temperature response time and energy consumption. The results indicated that the optimized environmental simulation system can fully meet the experimental requirements, while shortening the cooling test time from 801 min to 621 min, approaching 22.5%, and the heating test time from 1326 min to 1175 min, approaching 11.4%, respectively, reducing the energy consumption from 10012 Kw*h to 7763 Kw*h, reduced 2249 Kw*h, in cooling model and reducing the energy consumption from 14851 Kw*h to 13160 Kw*h, reduced 1691 Kw*h in heating model about the operational of wind cave environmental simulation system, respectively, achieving energy saving and emission reduction.
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