The current accelerating rate calorimeter has a major inherent drawback: the thermalinertia/thermal dilution effect. Due to the heat loss to the sample container, the conventionalaccelerating rate calorimeter, by definition, is not an adiabatic device. This paper presents thelatest technological breakthrough in accelerating rate calorimetry, a zero-thermal dilutiondifferential heat-compensation accelerating rate calorimeter, Φ1TM, in which sample heat lossto both environment and sample container are completely eliminated. Therefore, we haveexperimentally achieved Φ = 1, a theoretical state of 100% pure adiabaticity.
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