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Method for measuring moisture supersaturation degree and device of method

A technology of saturation and water vapor, which is used in the field of measuring gas supersaturation, and can solve the problem of inability to measure gas supersaturation.

Active Publication Date: 2015-12-09
SOUTHEAST UNIV
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  • Abstract
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Problems solved by technology

However, directly using a hygrometer cannot measure the supersaturation value of the gas, because the measuring range of the hygrometer is RH100%

Method used

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  • Method for measuring moisture supersaturation degree and device of method
  • Method for measuring moisture supersaturation degree and device of method

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Embodiment Construction

[0019] Attached below figure 1 , 2 , the present invention will be described in detail.

[0020] The method for measuring water vapor supersaturation in the present invention is specifically to measure the temperature and pressure of the gas in the supersaturated state, and obtain the moisture content of the saturated gas under the temperature and pressure conditions; heat the gas in the supersaturated state to RH<100 through isobaric heating % state, measure the temperature and relative humidity of the gas after heating, and obtain the absolute moisture content of the gas accordingly, the ratio of the absolute moisture content of the gas to the moisture content of the saturated gas under the temperature and pressure conditions of the gas before heating is gas supersaturation.

[0021] figure 1 A schematic diagram of the relationship between gas temperature and relative humidity. combine figure 1 , point A is the initial state of the supersaturated gas, and its correspond...

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Abstract

The invention relates to a method for measuring the moisture supersaturation degree and a device of the method. The method specifically includes the steps of measuring temperature and pressure of gas in the supersaturation state to obtain the saturated gas moisture content under the condition of the temperature and the pressure, conducting isobaric heating on the gas in the supersaturation state till the state that RH is smaller than 100% is obtained, measuring temperature and relative humidity of the heated gas, and obtaining the absolute moisture content of the gas on this basis, wherein the ratio of the absolute moisture content of the gas to the gas moisture content, under the temperature and pressure conditions, of the gas which is not heated is the supersaturation degree of the gas. The invention provides the method for indirectly measuring the supersaturation degree and the device of the method, the supersaturation degree of the supersaturated gas containing moisture is measured, and the measurement range of hygrometers is widened to the range that RH is larger than 100%.

Description

technical field [0001] The invention relates to a method and a device for measuring gas supersaturation, belonging to the technical field of gas humidity measurement. Background technique [0002] Supersaturated gas is very common in nature. For example, when the temperature drops at night and the air cools to the dew point, the water vapor in the air will reach a saturated state. When the temperature drops further, the water vapor will reach a supersaturated state. Condensation will occur. [0003] Water vapor phase change promotes the removal of PM2.5 occurs under supersaturated conditions, PM2.5 particles are extremely difficult to be removed by traditional dust removal equipment, so use water vapor phase change to promote PM2.5 growth before using traditional dust removal equipment Removal has become a very promising dust removal pretreatment technology. The first condition for water vapor to condense and grow on the surface of PM2.5 particles is to form water vapor su...

Claims

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Application Information

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IPC IPC(8): G01N25/62
Inventor 张军徐俊超孟强于燕
Owner SOUTHEAST UNIV
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