| 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。 |
| 关键词: 工程热物理 HFO-1234yf 热物性模拟 工质替代 LGWP |
| DOI： |
| 投稿时间：2011-12-29
|
| 基金项目: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。 |
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| Thermal Properties Model for the New Refrigerant HFO-1234yf |
|
Jiang Kun, Liu Ying, Jiang Sha
|
| (School of energy and power engineering, University of Shanghai for Science and Technology) |
| Abstract: |
| 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. |
| Key words: engineering thermophysics hfo-1234yf thermal properties simulation alternative refrigerants LGWP |
