摘要
基于Peng-Robinson通用状态方程,采用基团贡献原理以及多项式拟合方法,建立了符合精度要求的新型LGWP制冷剂HFO-1234yf的热物性模型,并对模型进行了验证,利用数学软件对模型进行编程求解,得到了较为全面的HFO-1234yf制冷剂的热物性数据。将HFO-1234yf制冷剂与R134a及R417A制冷剂的热物性能进行了对比,结果显示HFO-1234yf的饱和蒸汽压力与定压比热容和R134a的表现相似,二者的饱和蒸气压均低于R417A,HFO-1234yf制冷剂与R134a和R417A相比,其饱和状态焓值较低,这将导致HFO-1234y系统运行时的性能系数不高。该模型能为HFO-1234yf制冷剂在汽车空调以及固定式空调制冷设备上的应用提供理论依据。
Based on Peng-Robinson general state equation,combined with group contribution principle and a polynomial method,the thermal state model of the new LGWP refrigerant HFO-1234yf was established and validated with required accuracy.By using the computer programming,the state models were solved by a mathematic software and a complete thermal properties of refrigerant were obtained.The thermal properties of HFO-1234yf were compared with R417A and R134a,and the results showed that the saturated vapor pressure and the specific heat capacity under constant pressure of HFO-1234yf has a similar performance with R134a.Both The saturated vapor pressure of both HFO-1234yf and R134a are lower than R417A,and the saturated state enthalpy of HFO-1234yf is lower than R417A,which would lead that the HFO-1234yf system can not have a higher performance coefficient.The models could act as a theoretical basis for the application of HFO-1234yf in automotive air conditioning and fixed refrigeration equipment.
出处
《制冷学报》
CAS
CSCD
北大核心
2012年第5期37-42,共6页
Journal of Refrigeration
基金
上海市重点学科建设项目(S30503)
上海市研究生创新基金项目(JWCXSL1102)资助。
作者简介
姜昆，男（1987-），硕士在读，上海理工大学制冷及低温工程专业，13601839495，E-mail：jiang_kun2010@163．com。研究方向：热泵，制冷及空调系统测试与优化
