Pressure-feedback signal indicates rate of heating. Improved isothermal calorimeter measures rate of heating in object under test. Called "isothermal" because chamber holding object and its environment maintained at or near constant temperature to minimize spurious tranfers of heat introducing errors into measurements. When item under test generates heat, rate of boiling and pressure in inner chamber increase. Servo-valve opens wider to maintain preset differential pressure. Valve-control voltage used as measure of rate of heating.
Isothermal Calorimeter
NASA Tech Briefs ; 14 , 8
1990-08-01
Miscellaneous
No indication
English
NTIS | 1974
|SAE Technical Papers | 1994