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本文介绍了ＣＯ_２跨临界循环高压侧压力控制的基本原理；通过循环分析，阐述了不同压力运行条件对制冷量和制冷效率的影响。通过对所得结果的分析论证，提供并优化出一种简单、实用的压力控制调节方案，该方案对汽车空调、热泵系统更有实用意义。
This paper introduces the basic principle of pressure control on the high pressure side of the transcritical CO2 cycle. Through the cycle analysis, the effects of different pressure operating conditions on the cooling capacity and cooling efficiency are expounded. Through the analysis and demonstration of the results obtained, a simple and practical pressure control adjustment scheme is provided and optimized, which is more practical for automotive air-conditioners and heat pump systems.