High-pressure isobaric heat capacities using a new flow calorimeter

被引：39

作者：

Segovia, Jose J. ^{[1
]}

Vega-Maza, David ^{[1
]}

Chamorro, Cesar R. ^{[1
]}

Carmen Martin, M. ^{[1
]}

机构：

[1] Univ Valladolid, Res Grp TERMOCAL Thermodynam & Calibrat, E-47011 Valladolid, Spain

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2008年 / 46卷 / 03期

关键词：

isobaric heat capacity; high pressure; toluene; ETBE; flow calorimeter;

D O I：

10.1016/j.supflu.2008.01.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An automated flow calorimeter has been developed for the measurement of high accurate isobaric heat capacities for pure compounds and mixtures over the range 250-400 K and 0-20 MPa. The technique has been checked for different compounds and at different conditions of temperature and pressure and the results have been compared with the literature values available. The conclusion of this comparison is that the new calorimeter can measure heat capacities with an estimated total uncertainty better than 0.5%. This paper report describes the new equipment, its set-up and gives new heat capacity data for toluene and ethyl tert-butyl ether at different temperatures and pressures. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：258 / 264

页数：7

共 24 条

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[2]

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