| POLYNOMIAL CURVE FITTING METHOD FOR REFRIGERANT THERMODYNAMIC SATURATION PROPERTIES |
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| 作者姓名： | 丁国良 张春路 李灏 |
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| 摘 要： | Ｎｏｍｅｎｃｌａｔｕｒｅａ—ｅｍｐｉｒｉｃａｌｃｏｅｆｆｉｃｉｅｎｔｓｐ—ｐｒｅｓｓｕｒｅ，１００ｋＰａＴ—ｔｅｍｐｅｒａｔｕｒｅ，Ｋｅ—ｔｅｍｐｏｒａｒｙｖａｒｉａｂｌｅ，ｏｒｍａｘｉｍｕｍｒｅｌａｔｉｖｅｂｉａｓｈ—ｅｎｔｈａｌｐｙ，１０ｋＪ／ｋｇｉ—ｔｈｅｉｔｈｓｅｇｍｅｎｔｏｆｆｉｔｔｉｎｇｒａｎｇｅｓ—ｅｎｔｒｏｐｙ，ｋＪ／（ｋｇ·Ｋ）ｕ，ｖ—ｖａｒｉａｂｌｅｓｉｎＥｑ．（１）ｘ，ｙ—ｖａｒｉａｂｌｅｓｗｈｉｃｈｓｔａｎｄｆｏｒａｎｙｓａｔｕｒａｔｉｏｎｐｒｏｐｅｒｔｉｅｓｏｆｒｅｆｒ…
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POLYNOMIAL CURVE FITTING METHOD FOR REFRIGERANT THERMODYNAMIC SATURATION PROPERTIES |
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| DING Guo,liang.POLYNOMIAL CURVE FITTING METHOD FOR REFRIGERANT THERMODYNAMIC SATURATION PROPERTIES[J].Journal of Shanghai Jiaotong university,1999(2). |
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| Authors: | DING Guo liang |
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| Abstract: | Fast calculation of thermodynamic properties of refrigerant is fundamental and important for refrigeration system simulation. But the existing models for the thermodynamic properties evaluation are not suitable because of their complexity form or limited available range. A new polynomial curve fitting method was developed to meet the requirements of fast evaluation of thermodynamic properties of refrigerant for refrigeration system simulation. An implicit cubic linear function was adopted for curve fitting of refrigerant saturation properties and a sectional smooth technique was developed for wider fitting range. Case studies using refrigerants R12, R22, R134a and R600a, in common encountered temperature range show high agreement to the reference data and good flexibility in refrigeration system simulation. |
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| Keywords: | thermodynamic properties saturation refrigerants |
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