Thermal measuring and testing – Calorimetry – With control of heat added to or lost from a sample container
Reexamination Certificate
2006-04-04
2006-04-04
Gutierrez, Diego (Department: 2859)
Thermal measuring and testing
Calorimetry
With control of heat added to or lost from a sample container
C374S038000, C374S043000, C436S147000
Reexamination Certificate
active
07021820
ABSTRACT:
A new adiabatic scanning calorimeter allows the thermal mass of a high-pressure reaction vessel to be dynamically compensated during a test. This allows the effective Φ factor for the experiment to be reduced to 1.0 without the use of complex pressure balancing equipment. Endothermic events can be quantified and sample specific heats can be measured. The time required for test completion is much shorter than for conventional adiabatic calorimeters, thus considerably improving apparatus productivity. The sensitivity to exotherm detection is at least as good as existing adiabatic calorimeters employing the Heat-Wait-Search strategy, but does depend on the temperature-scanning rate. In addition, the heat of reaction is obtained without reference to the heat capacity of the sample, pressure is measured continuously, reactants may be injected into the test vessel and the sample can be mixed during the test.
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Chippett Simon
Gutierrez Diego
Kirk Patent Consulting
Kirkpatrick Francis H.
Pruchnic Jr. Stanley J.
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