分体四轮式空气循环制冷系统仿真及试验研究

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.