| 摘要 |
PROBLEM TO BE SOLVED: To provide an isopiestic specific heat measurement method for a high pressure fluid implemented by using a simple structure which is a batch type sealed in a container and has the container accommodating a sample installed in a thermostatic chamber. SOLUTION: A variable container 3 having a volume varied by external pressure is communicated with a sample container 1 through piping 2. The sample container 1 and the variable container 3 are installed in the thermostatic chamber 30. While a constant pressure is applied to the variable container 3, a thermal flow is externally supplied to the sample S in the sample container 1 and the temperature of the sample S is in a static state. In a cooling process, a thermal flow emitted to the thermostatic chamber is found from the temperature difference between the sample and the thermostatic chamber and a heat transfer coefficient, a thermal flow emitted from the sample container is found by using a standard sample, a thermal flow emitted from the sample is found from a difference between the thermal flow emitted to the thermostatic chamber and the thermal flow emitted from the sample container, and the thermal capacity of the sample is found from a summation of the thermal flow emitted from the sample and the temperature difference between the sample and the thermostatic chamber. COPYRIGHT: (C)2004,JPO
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