CAJ | 학술논문

为降低采用R32工质的涡旋制冷压缩机在高温、高压比下的排气温度并提高其性能，建立了湿压缩模拟的压缩过程模型，结合两相泄漏模型和传热模型，对其在不同吸气工况下的工作过程进行了数值模拟。该模型以内能为求解参数，可自动判断流态，统一了两相和过热模型，将控制方程从5个降低到2个，简化了编程和求解。结果表明两相和过热工质的压缩特性明显不同，压缩过程中工质的最高温度高于排气温度。在吸气干度≥0.96时，两相工质在压缩过程前已变为过热，不会产生液击。随吸气名义干度的降低，存在最大制冷量和制冷系数（COP），分别位于吸气干度0.97和1.0处，相对吸气温度为35℃时，分别提高了4.2％和2.6％。该模型为预测和优化采用湿压缩的涡旋压缩机提供了一种有效手段。
위강저채용R32공질적와선제냉압축궤재고온、고압비하적배기온도병제고기성능，건립료습압축모의적압축과정모형，결합량상설루모형화전열모형，대기재불동흡기공황하적공작과정진행료수치모의。해모형이내능위구해삼수，가자동판단류태，통일료량상화과열모형，장공제방정종5개강저도2개，간화료편정화구해。결과표명량상화과열공질적압축특성명현불동，압축과정중공질적최고온도고우배기온도。재흡기간도≥0.96시，량상공질재압축과정전이변위과열，불회산생액격。수흡기명의간도적강저，존재최대제랭량화제랭계수（COP），분별위우흡기간도0.97화1.0처，상대흡기온도위35℃시，분별제고료4.2％화2.6％。해모형위예측화우화채용습압축적와선압축궤제공료일충유효수단。
In order to reduce the discharge temperature and improve the performance of R32 scroll compressor,working under high temperature or high pressure-ratio condition,the simulation model is developed to describe the wet compression.Combined with the two-phase leakage and heat transfer models,the model simulates the compression process of the compressor under dif-ferent suction operational conditions.With the internal energy as the solution parameters,this model can automatically deduce the fluid state to unify two phases and superheated model to low-er the governing equations from 5 to 2,whereby simplifying the programming and solution see-king.The results indicate that the characteristic of two-phase compression is obviously different from that of superheated gas compression.The maximum temperature of refrigerant is higher than the discharge temperature.When the suction nominal quality is not smaller than 0.96,the two-phase work fluid is translated into superheated one before the compression process,so that the liquid slugging does not happen.With the decrease in suction nominal quality,the capacity and COP reach the maximum value at the suction quality 0.97 and 1.0,respectively.Compared to the value when the suction temperature is 35℃,the capacity and Coefficient of performance (COP)are improved by 4.2% and 2.6%,respectively.Therefore,the model provides an effec-tive method to predict and optimize the performance of scroll compressor with wet compression.