The content of this site has been prepared by the members of the thematic network "S2S - A Gateway for Plant and Process safety". Since the conditions of use are beyond our control we disclaim any liability, including patent infringement, incurred in connection with the use of these products, data or suggestions.

The thematic network S2S is a European Community Project carried out in the "Competitive and Sustainable Growth" programme and funded in part by contract number G1RT-CT-2002-05092.


A B C D E F G H I J K L M N O P Q R S T U V W Z All terms

Calvet calorimetry

Calorimetry based on the Calvet calorimetric principle.

With the Calvet calorimetric principle, the sample is completely surrounded by the detector (thermopile), made of crowns of thermocouples. Such a design guarantees the measurement of the total heat exchange between the sample and the surroundings through the calorimetric detector.

The Calvet principle is typical for microcalorimetry (?-C) but it is also used in DSC, and in some cases in RC. Instruments based on this principle are the most sensitive. However, they are usually limited to low heating rates and moderate temperatures.

In a Calvet calorimeter, the sample container is surrounded by a secondary wall. The difference of temperatures between the internal and external surfaces of the secondary wall are measured with extreme accuracy using a crown of thermocouples ("thermopile"). The geometry, thickness and thermal conductivity of the secondary wall are known, so the heat flow is evaluated using the balance at the secondary wall.


  • HarsNet,  HarsBook, A technical guide for the assessment of highly reactive chemical systems, DECHEMA e.V., Frankfurt, 2002.

Related Material

Contentbelongs to:Thermal analysis and Calorimetry
Copyright by S2S - A Gateway for Plant and Process Safety - All Rights Reserved.
Web site engine's code is Copyright © 2003 by PHP-Nuke. All Rights Reserved. PHP-Nuke is Free Software released under the GNU/GPL license.
Page Generation: 0.088 Seconds