Patent ID: 7021820
Filing Date: 2006-04-04
Classification: G01K,G01N

Abstract:
1. A method, for use in an adiabatic scanning calorimeter, for removing the influence of the mass of a bomb from the measurement of the thermal properties of a sample undergoing an exothermic or endothermic reaction, comprising the steps of: a) placing a sample in a bomb; b) initially heating the sample at a predetermined rate of temperature increase, by adjusting the power output of a sample heater; c) calculating the rate of heat loss to the bomb from the sample; d) adjusting the sample heater power output to equal the heat loss rate to the sample bomb; e) adjusting the power input to one or more guard heaters to prevent the loss of heat from the exterior surface of the bomb; and f) calculating the amount of heat absorbed or evolved from the sample to change the sample temperature by a defined amount, by subtracting the heat supplied by the sample heater from the change in the sensible heat of the sample and the sample bomb.