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杨志强, 郝志军, 王伟, 曾纪珺, 张伟, 吕剑. 新型PVT性质测试系统的研制[J]. 分析测试技术与仪器, 2009, 15(4): 241-244.
引用本文: 杨志强, 郝志军, 王伟, 曾纪珺, 张伟, 吕剑. 新型PVT性质测试系统的研制[J]. 分析测试技术与仪器, 2009, 15(4): 241-244.
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YANG Zhi-qiang, HAO Zhi-jun, WANG Wei, ZENG Ji-jun, ZHANG Wei, LU Jian. Development of New High Accuracy PVT Measurement System[J]. Analysis and Testing Technology and Instruments, 2009, 15(4): 241-244.
Citation: YANG Zhi-qiang, HAO Zhi-jun, WANG Wei, ZENG Ji-jun, ZHANG Wei, LU Jian. Development of New High Accuracy PVT Measurement System[J]. Analysis and Testing Technology and Instruments, 2009, 15(4): 241-244.
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新型PVT性质测试系统的研制

Development of New High Accuracy PVT Measurement System

    摘要
  • 摘要: 研制了一套新型压力-温度-体积（PVT）性质测试系统.该系统由自行开发的测控软件实时测控，温度测量精度可达±10 mK，压力测量系统最大不确定度为±1.2 KPa.利用新的测试系统对294～351 K温度区间的Hydrofluorocarbons(HFC)-245fa饱和蒸气压进行了研究.实验结果表明，HFC-245fa的测量值与公认文献值的平均偏差小于0.03%，最大偏差小于0.484%，结果与文献值吻合较好.

     

    Abstract: A new experimental system of PVT measurement automatically controlled by a computer has been developed. The overall pressure and temperature uncertainty is about ±1.2 KPa, and ±5 mK, respectively. The vapor pressures of HFC-245fa were measured in the temperature range from 294 to 351 K with the new experimental system, and the experimental results indicated that the average deviation between experimental data and the equation provided in the literature was below 0.03%, and the standard deviation was below 0.484%. Which approved that the new experimental system is reliable.

     

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