| R32热力学性质计算模型及其分析 |
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| 引用本文： | 邱琳祯,谷波,缪梦华.R32热力学性质计算模型及其分析[J].化工学报,2019,70(6):2075-2082. |
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| 作者姓名： | 邱琳祯 谷波 缪梦华 |
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| 作者单位： | 上海交通大学机械与动力工程学院, 制冷与低温工程研究所，上海 200240 |
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| 摘 要： | 提出了R32制冷剂在饱和线(?130~78℃，0.00013~5.76 MPa)范围内饱和蒸气压、液体密度等关联式的计算模型，在此基础上推导了蒸发潜热的计算模型；建立了描述饱和气体线上(?130~78℃，0.00013~5.76 MPa)及过热区(过热度为100℃)范围内描述P-v-T关系的状态方程；在上述模型的基础上推导得到了饱和气体线及过热区范围内焓、熵、比热容的计算模型。将模型计算结果与REFPROP9.0数据源、已发表的状态方程及公开实验数据对比，各关联式计算模型的平均相对偏差均小于0.16%，最大相对偏差不超过3.7%，与已有状态方程和公开数据对比偏差小于8.7%；基于状态方程和热力学关系式推导得到的焓、熵、比热容的计算模型的平均相对偏差均小于5.2%，最大相对偏差不超过9.1%。
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| 关 键 词： | 热力学性质 焓 熵 状态方程 R32制冷剂 模型 |
| 收稿时间： | 2018-12-28 |
| 修稿时间： | 2019-03-14 |
Calculation model and analysis of thermodynamic properties of R32 refrigerant |
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| Linzhen QIU,Bo GU,Menghua MIAO.Calculation model and analysis of thermodynamic properties of R32 refrigerant[J].Journal of Chemical Industry and Engineering(China),2019,70(6):2075-2082. |
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| Authors: | Linzhen QIU Bo GU Menghua MIAO |
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| Affiliation: | Institute of Refrigeration and Cryogenics Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University，Shanghai 200240, China |
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| Abstract: | The calculation model of the saturated vapor pressure and liquid density of R32 refrigerant in the saturation line (?130—78°C, 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%. |
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| Keywords: | thermal performance enthalpy entropy state equation R32 refrigerant model |
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