Dry, portable calorimeter for nondestructive measurement of the

Details Dry, portable calorimeter for nondestructive measurement of the Dry, portable calorimeter for nondestructive measurement of the

1975-10-20

1976-12-07

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

System

G01K 1700

Patent

active

039954854

ABSTRACT:
The activity of a quantity of heat-producing nuclear fuel is measured rapidly, accurately and nondestructively by a portable dry calorimeter comprising a preheater, an array of temperature-controlled structures comprising a thermally guarded temperature-controlled oven, and a calculation and control unit. The difference between the amounts of electric power required to maintain the oven temperature with and without nuclear fuel in the oven is measured to determine the power produced by radioactive disintegration and hence the activity of the fuel. A portion of the electronic control system is designed to terminate a continuing sequence of measurements when the standard deviation of the variations of the amount of electric power required to maintain oven temperature is within a predetermined value.

REFERENCES:
patent: 2911824 (1959-11-01), Czerlinsky et al.
patent: 3267728 (1966-08-01), Solomons
patent: 3718437 (1973-02-01), Paloniemi
patent: 3869914 (1975-03-01), Koehler
Andersen "Polymerization Rates by Calorimetry" in Journal of polymer Sciences A-1 vol. 7, 1969 pp. 2888-2896.
Hiller et al. "Automatically Controlled Isothermal Adiabatic Calorimeter" in Review of Sci. Instruments, vol. 33 No. 9 3/62 pp. 323-330.
Boyd "An Isothermal Calorimeter for Solid State Reactions" in J. Sci. Instruments vol. 3 No. 6. 6/70 pp. 1-5.

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