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1.发明授权
公开(公告)号：US6065328A
公开(公告)日：2000-05-23
申请号：US343103
申请日：1999-06-29
CPC分类号： G01N9/24 , G01F1/66 , G01N29/024 , G01N29/323 , G01N29/326 , G01N2291/0215 , G01N2291/02818 , G01N2291/02836 , G01N2291/02881
摘要： The instant invention relates to a method and apparatus to determine the thermodynamic properties of a gas medium without making a determination of gas composition. In the instant invention, the speed of sound of a gas medium in a vessel is determined at various temperatures and pressures based upon an isobaric process with estimated initial values of density, compressibility and numerical deriviative (dZ/dT) for the same gas medium. According to the preferred embodiment, this information may be measured at constant pressure or constant temperature. Once the physical information is determined, a routine is executed by which initial estimated parameters such as the compressibility and heat capacity of the gas medium will converge to accurate values. From these parameters, the thermophysical properties of the gas medium may be determined.
摘要翻译： 本发明涉及一种在不确定气体成分的情况下确定气体介质的热力学性质的方法和装置。 在本发明中，容器中的气体介质的声速在各种温度和压力下基于等压过程确定，其中相同气体介质具有估计的密度初始值，可压缩性和数值导数（dZ / dT）。 根据优选实施例，该信息可以在恒定压力或恒定温度下测量。 一旦确定了物理信息，则执行一个程序，通过该程序，诸如气体介质的压缩性和热容量的初始估计参数将会收敛到准确的值。 从这些参数可以确定气体介质的热物理性质。
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2.发明授权Apparatus and method for determining thermophysical properties using an isochoric approach 失效使用等离子体方法测定热物理性质的装置和方法
公开(公告)号：US5932793A
公开(公告)日：1999-08-03
申请号：US903069
申请日：1997-07-30
CPC分类号： G01N9/24 , G01F1/66 , G01N29/024 , G01N29/323 , G01N29/326 , G01N2291/0215 , G01N2291/02818 , G01N2291/02836 , G01N2291/02881
摘要： The instant invention relates to a method and apparatus to determine the thermodynamic properties of a gas medium without making a determination of gas composition. In the instant invention, the pressure and speed of sound of a gas medium in a vessel are determined at multiple temperature points. According to the preferred embodiment, this information may be on a single isochore. Once the physical information is determined, an interpolation routine is executed by which initial estimated parameters such as the density and the compressibility of the gas medium will converge to accurate values. From these parameters, the thermophysical properties of the gas medium may be determined.
摘要翻译： 本发明涉及一种在不确定气体成分的情况下确定气体介质的热力学性质的方法和装置。 在本发明中，在多个温度点确定容器中的气体介质的声压的压力和速度。 根据优选实施例，该信息可以在单个等离子体上。 一旦确定了物理信息，则执行内插程序，通过该内插程序，诸如气体介质的密度和压缩性的初始估计参数将会收敛到准确的值。 从这些参数可以确定气体介质的热物理性质。
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