Calculation model and analysis of thermodynamic properties of R32 refrigerant

被引：0
|
作者：
Qiu L. [1 ]
Gu B. [1 ]
Miao M. [1 ]
机构：
[1] Institute of Refrigeration and Cryogenics Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai
来源：
Huagong Xuebao/CIESC Journal | 2019年 / 70卷 / 06期
关键词：
Enthalpy; Entropy; Model; R32; refrigerant; State equation; Thermal performance;
D O I：
10.11949/j.issn.0438-1157.20181528
中图分类号：
学科分类号：
摘要：
The calculation model of the saturated vapor pressure and liquid density of R32 refrigerant in the saturation line (-130-78℃, 0.00013-5.76 MPa) is proposed. Based on this, the calculation model of latent heat of evaporation is derived. The state equation for P-v-T relationship in saturated line and superheated zone was established. Based on above model, the calculation models of enthalpy, entropy and specific heat capacity in saturated line and superheated region are obtained. The average relative errors of correlation models are less than 0.16% and maximum relative errors don􀆳t exceed 3.7% compared with data from REFPROP 9.0. The deviation of state equation is less than 8.7% compared with published equation and data. The average errors of enthalpy, entropy and specific heat capacity models derived from state equation and thermodynamic relation are less than 5.2%, and maximum relative errors of all calculation models are less than 9.1%. © All Right Reserved.
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页码：2075 / 2082
页数：7
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