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Device and method for measuring state equation of hydrogen-containing high-temperature mixture

An equation of state and mixture technology, applied in the field of devices for measuring the equation of state of high-temperature hydrogen-containing mixtures, to achieve the effects of simple operation, leakage prevention, and high measurement accuracy

Active Publication Date: 2017-10-20
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

No researchers have proposed an experimental method for measuring the equation of state of hydrogen-containing mixtures at and above 650°C

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  • Device and method for measuring state equation of hydrogen-containing high-temperature mixture
  • Device and method for measuring state equation of hydrogen-containing high-temperature mixture
  • Device and method for measuring state equation of hydrogen-containing high-temperature mixture

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Embodiment Construction

[0038] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0039] Each measurement process is divided into two steps, such as figure 1 shown.

[0040] The first step is to measure the hydrogen-containing mixture at a certain density from the temperature value T 20 to the highest temperature T that needs to be measured 10 The state equation p=p(T). A certain amount of hydrogen-containing mixture is filled in the sample container one 1, and then the control valve one 11 and the control valve two 12 are closed to form a closed space in the sample container one 1 to accommodate a certain amount of hydrogen-containing mixture. Use electric heater-3 to heat sample container-1 afterwards, use thermometer-9 to control, make the temperature of sample container-1 stable at the highest temperature T that needs to be measured 10 . Measure the pressure p in the sample container using the pressure sensor-7 1 , ...

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Abstract

The invention discloses a device and a method for measuring state equation of a hydrogen-containing high-temperature mixture. The method comprises the following steps: pressurizing a measured mixture and charging the pressurized mixture into a sample container; heating the mixture to a measuring temperature, measuring pressure of the sample through a pressure sensor; measuring the temperature of the sample through a platinum resistance thermometer or a thermocouple; and cooling the sample container; introducing one part of the sample mixture into another container with known volume, and measuring to obtain density, at the low temperature, of the sample, thereby obtaining the complete state equation. The method has the advantages of avoiding hydrogen gas leakage at a high temperature, being high in measuring precision, simple to operate, and the like, and provides a feasible scheme for measuring the state equation of the hydrogen-containing high-temperature mixture.

Description

technical field [0001] The invention belongs to the technical field of measuring the equation of state of a high-temperature mixture, and in particular relates to a device and a method for measuring the equation of state of a high-temperature mixture containing hydrogen. Background technique [0002] Hydrogen is a clean energy. In 2005, Yan Qiuhui and others found that adding biomass and coal slurry to supercritical water could continuously transform the hydrogen element in the coal slurry into hydrogen single substance precipitation, and generate a mixed working fluid containing hydrogen. The experimental system is operated at 650°C and 25MPa, and the generated working fluid contains 12% hydrogen, 8% carbon dioxide, and 80% water vapor. This mixed working fluid can be used to drive the turbine, which drives the engine to generate electricity. However, in order to design the turbine and engine using this mixed working fluid, obtaining its state equation becomes the most di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 张兴马维刚程思远
Owner TSINGHUA UNIV