| Citation: | YANG Han, ZHANG Xingjuan, WANG Chao, et al. Simulation and test study on split four-wheel air cycle refrigeration system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(12): 2203-2210. doi: 10.13700/j.bh.1001-5965.2019.0633(in Chinese)
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In order to improve the performance of cabin environmental control system and reduce the difficulty of design and manufacture, the split four-wheel air cycle refrigeration system was proposed. Two split two-wheel turbine coolers were used instead of integral four-wheel cooler. Based on the enthalpy parameter method, the thermal performance of split four-wheel and four-wheel air cycle refrigeration system was analyzed. Results showed that the two systems have the same thermal performance. A prototype of split four-wheel air cycle refrigeration system was built and tested, and the maximum refrigeration capacity was 12.0 kW. The error between theoretical value and test value of refrigeration capacity was within ±15%, which verified the correctness of enthalpy parameter method. The coefficient of performance of the prototype was between 0.21 and 1.15. The spilt four-wheel air cycle system can provide research ideas for the development of domestic airliner environmental control system.
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