Fast Calculation Model of Thermodynamic and Transport Properties of R410a Refrigerant：Ⅱ. Equation for Superheat Region

Abstract

Abstract: Based on the Martin-Hou equation of state, a fast calculation model for R410a thermodynamic and transport properties, covering superheat region(pressure:4—4 355 kPa, superheating of 0—100 K), was presented due to no need of iteration. This method can not only achieve the accuracy, but guarantee the calculation stability and high calculation speed of thermophysical and transport properties of R410a, and it is also convenient in cases of simulation of refrigeration system. The source data was calculated from REFPROP 7. The total mean relative error and maximum relative error for all fast calculation models are less than 1.24% and 14.30%, respectively. The comparison result shows that the calculation speed of the fast calculation model is two to four orders faster than those of REFPROP 7.

Key words: R410 a refrigerant, thermodynamic properties, transport properties, superheat region, calculation model, R410 a refrigerant, thermodynamic properties, transport properties, superheat region, calculation model

CLC Number:

TB66

HONG Ying-Chun, GU Bo, HAN Hua. Fast Calculation Model of Thermodynamic and Transport Properties of R410a Refrigerant：Ⅱ. Equation for Superheat Region[J]. Journal of Shanghai Jiaotong University, 2011, 45(09): 1379-1383.

References

［1］Monte F D. Calculation of thermodynamic properties of R407c and R410a by the MartinHou equation of state:Part I.Theoretical development［J］. Int J Refrig, 2002, 25 (3): 306313.

［2］Monte F D. Calculation of thermodynamic properties of R407c and R410a by the MartinHou equation of state:Part II.Technical interpretation［J］. Int J Refrig, 2002, 25 (3): 314329.

［3］McLinden M O, Klein S A. Lemmon E W NIST REFPROP V7.0［M］. USA: National Institute of Standards and Technology, 2006.

［4］DuPont Fluorochemicals. Thermodynamic properties of Suva 9100 refrigerant ［R］. DuPont Technical Information R410A (50/50). Wilmington, DE, USA:DuPont Company, 1996.

［5］Cleland A C. Polynomial curvefits for refrigerant thermodynamic properties: Extension to include R134a［J］. Int J Refrig, 1994, 17 (4):121123.

［6］Cleland A C. Computer subroutines for rapid evaluation of refrigerant thermodynamic: Properties［J］. Int J Refrig, 1986, 9 (8): 346351.

［7］MartinDominguez I R, McDonald T W. Correlation for some saturated thermodynamic and transport properties of refrigerant R22［J］. ASHRAE Trans, 1993, 99 (1): 344348.

［8］胡欢，谷波，龙琼, 等. 亚临界压力区CO2热力性质及传输特性的快速计算模型［J］. 上海交通大学学报，2008，42（8）:12601263.

HU Huan, GU Bo, LONG Qiong, et al. Fast calculation model of thermodynamic and transport properties of CO2 in subcritical pressure region［J］. Journal of Shanghai Jiaotong University, 2008, 42(8):12601263.

［9］龙琼，谷波.过热区R22热力性质及传输特性的快速计算模型［J］.流体机械，2009 (2): 6972.

LONG Qiong, GU Bo. Fast calculation model of thermodynamic and transport properties of R22 in superheat region［J］. Fluid Machinery, 2009 (2):6972.

［10］洪迎春，谷波，韩华. R410a制冷剂性能参数的显式快速计算模型:Ⅰ. 饱和线方程［J］. 上海交通大学学报，2011,45（9）：13741378.

HONG Yingchun, GU Bo, HAN Hua. Fast calculation model of thermodynamic and transport properties of R410a:Ⅰ. Equation for saturation curve［J］. Journal of Shanghai Jiaotong University, 2011,45（9）：13741378.

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