Calorimetric system of combustion heat tester
A technology of calorimetry system and measuring instrument, applied in the field of calorimetry system, can solve problems such as increased measurement error and large baseline fluctuation
Pending Publication Date: 2021-05-11
SOUTHWEAT UNIV OF SCI & TECH
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[0005] Moreover, since the thermal conductivity calorimeter uses thermocouples for direct measurement, when the number of thermocouples is large and the thermal junction is large enough, slight changes in the ambient temperature can be detected in the thermopile, thereby generating parasitic currents, Causes baseline fluctuations to increase and measurement errors to increase
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[0019] see figure 1 , The calorimetric system of the Combustion Heat Meter includes three parts: a water bath device, a calorimetric pool, and a thermopile, which are described as follows.
[0020] The water bath device comprises an outer cabinet 1 and an inner cabinet 2, the inner cabinet 2 is located in the outer cabinet 1, and the cabinet contains a constant temperature medium 9; the cabinet wall of the inner cabinet 2 is a sandwich structure, and the interlayer is filled with air; The cabinet is equipped with a movable connection cover 3. When the movable connection cover 3 is opened, the constant temperature medium in the inner cabinet 1 and the outer cabinet 2 performs heat exchange; when the movable connection cover 3 is closed, the inner cabinet 2 and the outer cabinet 1 pass through the air of the inner cabinet 2 layer for heat exchange. The inner cabinet 2 is provided with a stirrer 6 to keep the temperature of the constant temperature medium 9 in the inner cabinet ...
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The invention discloses a calorimetric system of a combustion heat tester. The system comprises a water cabinet, the cabinet is filled with a constant temperature medium, the constant temperature medium comprises but is not limited to ultrapure water, and an oxygen bomb calorimetric pool and a reference calorimetric pool are arranged in a constant temperature medium environment; thermopiles which are identical in structure and performance sleeve the peripheries of the oxygen bomb calorimetric pool and the reference calorimetric pool, and the two thermopiles are reversely connected to form a differential calorimetric mode so as to counteract the influence of a parasitic heat flow; the water cabinet comprises an outer cabinet body and an inner cabinet body, the inner cabinet body is located in the outer cabinet body, the calorimetric pool and the thermopiles are both arranged in the inner cabinet body, the cabinet wall of the inner cabinet body is an interlayer structure, and the interlayer is filled with air; the inner cabinet body is provided with a movable connecting cover, and when the movable connecting cover is opened, the constant temperature media in the inner cabinet body and the outer cabinet body exchange heat; and when the movable connecting cover is closed, the inner cabinet body and the outer cabinet body exchange heat through the air layer.
Description
technical field [0001] The invention relates to the technical equipment field of calorimetry, and more specifically, relates to a calorimetric system of a combustion calorimeter. Background technique [0002] The heat of combustion refers to the heat generated when 1 mole of combustibles are fully combusted in oxygen to form stable compounds at 25°C and 101kPa. [0003] The traditional combustion heat measurement methods are all based on the water equivalent method, that is, the oxygen bomb is placed in a water bath with a known initial temperature, the heat generated by combustion increases the water temperature, and the combustion heat is determined indirectly by measuring the increase in water temperature. The oxygen bomb calorimeter of the traditional water equivalent method has the disadvantages of demanding environmental conditions, poor test accuracy, large sample volume, and not suitable for explosive samples and precious samples. Moreover, the water equivalent meth...
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Login to View More IPC IPC(8): G01N25/26
CPCG01N25/26
Inventor 金波楚士晋彭汝芳李晓仪张青春黄琪
Owner SOUTHWEAT UNIV OF SCI & TECH