基于循环模拟模型的二氧化碳循环效能分析

针对二氧化碳热泵性能改进问题,设计了一个基于循环模拟模型开展仿真模拟研究。通过改变该模型的输入参数和运行条件,研究模型的最佳工作条件及性能提高的途径。提出了采用中间冷却器的双级压缩机和带有膨胀箱的双级压缩机的工作模型,并对该模型进行仿真测试,结果表明最多可以比传统的工作系统提高跨临界二氧化碳循环20%的加热性能和28%的制冷性能。

CO2 Cycle Effectiveness Analysis Based on Circulation Analog Modeling

In view of improving the performance of a heat pump using CO2,the analog simulation by utilizing a cycle simulation model has been designed in this study.The paper also studies the best working conditions and ways of improving the system performance by varying the input parameters and operating conditions in the model.Moreover,it proposes a work model using a two-stage compressor with an intercooler and a two-stage compressor with a flash tank,and carries out a simulation test of the model.The test results show that the model improves the heating and cooling performances of the transcritical CO2 cycle by 20% and 28%,respectively,compared with the traditional cycle.