Cylindrical calorimeter based on fluidic heat exchange of fluids

A fluid flow, cylindrical technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of measuring the latent heat of phase change and phase change temperature, the inability to measure the latent heat of phase change, small cooling and heating rates, etc., to achieve The effect of simple structure, low cost and fast response

Inactive Publication Date: 2005-09-21
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

On the one hand, the instruments used in this method are very expensive and very cumbersome to operate
The most important thing is that due to the limitation of its principle, the method must adopt a sufficiently small cooling and heating rate, so it is impossible to measure the latent heat of phase change under different cooling and heating rates.
In addition, the latent heat measured by the DSC method is actually the sum of latent heat and sensible heat, but the sensible heat is relatively much smaller than the latent heat, which will inevitably introduce new measurement errors
At present, there is no method to measure the latent heat of phase change and the phase change temperature at different cooling and heating rates.

Method used

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  • Cylindrical calorimeter based on fluidic heat exchange of fluids
  • Cylindrical calorimeter based on fluidic heat exchange of fluids
  • Cylindrical calorimeter based on fluidic heat exchange of fluids

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Embodiment Construction

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] Depend on figure 1 It can be seen that the cylindrical calorimetric device based on fluid flow heat exchange provided by the present invention includes:

[0040] An adiabatic chamber 20, the upper end surface of which is covered with an adiabatic chamber top cover 1;

[0041] A sample cell 30 located in the heat-insulating chamber 20 is covered with a sample cell top cover 5 on its upper end face;

[0042] A thick-walled hollow tube 2, which passes through the heat insulation chamber top cover 1 of the heat insulation chamber 20, the sample pool top cover 5 of the sample pool 30, the sample pool base 6 of the sample pool 30 and the heat insulation base 4 of the heat insulation room 20;

[0043] A balance 71 with a liquid storage tank 7 arranged at the upper end, the liquid storage tank 7 is located below the thick-walled holl...

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Abstract

This invention provides a column heat measurement device based on fluid flow heat exchanging, which comprises the following: isolation room located inside the sample pool; thick hollow tube through sample pool and isolation room located on the bottom balance of the hollow tube, wherein the balance top is fixed with liquid storage pool; the temperature sensors orderly located on the hollow tube 2 inside wall and outside wall with its conductive wires connected to the data sampler input end, wherein, the data sampler is connected to the computer.

Description

technical field [0001] The invention relates to a scanning calorimetry device for changing the temperature information of a measured sample based on fluid flow heat exchange, and thereby detecting its thermal physical properties, in particular to a circular microchannel arranged on the axis of a cylindrical container, It is a calorimetric device that passes specific cold and hot fluids to change the thermal state of the surrounding samples, thereby determining the thermal properties of the samples. Background technique [0002] Thermal analysis technology is a kind of technology used to describe the relationship between the properties of substances and temperature. It is an extremely effective means for qualitative and quantitative characterization of various substances in a wide temperature range. It has been applied to various experimental studies and In the field of engineering technology, it has become a unique method system. Generally speaking, thermal analysis include...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
Inventor 刘静于丽娜
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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