| HFC-227ea的维里系数研究 |
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| 引用本文： | 雷霞,段远源,史琳,朱明善,韩礼钟. HFC-227ea的维里系数研究[J]. 工程热物理学报, 2000, 21(6): 673-676 |
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| 作者姓名： | 雷霞 段远源 史琳 朱明善 韩礼钟 |
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| 作者单位： | 1. 北京联合大学应用技术学院,北京 100054
2. 清华大学热能工程系,北京 100084 |
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| 基金项目： | 国家自然科学基金资助项目!（No．59906006） |
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| 摘 要： | ＨＦＣ－２２７ｅａ是一种有希望的新环保制冷剂，特别是作为混合物中的一种组元用于Ｒ２２和Ｒ５０２的替代，但其热物性数据十分有限。本文使用膨胀定容法高精度地测量了ＨＦＣ－２２７ｅａ的气相ＰＶＴ性质，沿定温线外推确定了其第二和第三维里系数，并与文献值进行了比较；使用截断维里方程，根据本文所确定的维里系数，可以高精度地再现ＨＦＣ－２２７ｅａ的气相区热力性质。
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| 关 键 词： | 维里系数 PVT性质 HFC-227ea 热力学性质 |
| 文章编号： | 0253-231X(2000)06-0673-04 |
| 修稿时间： | 2000-01-12 |
STUDY ON VIRIAL COEFFICIENTS OF HFC-227ea |
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| Lei Xia,Duan Yuanyuan,SHI Lin,Zhu Mingshan,Han Lizhong. STUDY ON VIRIAL COEFFICIENTS OF HFC-227ea[J]. Journal of Engineering Thermophysics, 2000, 21(6): 673-676 |
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| Authors: | Lei Xia Duan Yuanyuan SHI Lin Zhu Mingshan Han Lizhong |
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| Abstract: | One hundred forty one pressure-volume-temperature datapoints for 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) in gaseous phasehave been measured using Burnett/isochoric methods. Burnett expansionmeasurements were made both at 363.15 K and 318.15 K. Based on thepressure-density relationships established at 363.15 K and 318.15 K,data were collected along 9 isochores for temperatures from 283 to 377 K,pressures from 0.26 to 2.5 MPa. The maximum temperature uncertainty andmaximum pressure uncertainty in this work were estimated to bewithin 10 mK and 500 Pa, respectively. Based on the present data, the virialcoefficients of HFC-227ea were determined and compared with the resultsof literature. The sample purity is 99.9 mass % |
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| Keywords: | virial coefficients PVT properties HFC-227ea thermodynamic properties |
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