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Measuring system and measuring method of aerosol scattering and moisture absorbing growth factors

A measurement system and growth factor technology, applied in the field of aerosol detection, can solve the problems of low resolution and not enough to capture the characteristics of aerosol daily changes, achieve the effect of improving time resolution and ensuring effective data output

Active Publication Date: 2016-09-07
PEKING UNIV
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Problems solved by technology

The resolution of the existing humidification turbidimeter system in China is low, which is not enough to capture the diurnal variation characteristics of aerosol scattering and moisture absorption growth characteristics

Method used

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  • Measuring system and measuring method of aerosol scattering and moisture absorbing growth factors
  • Measuring system and measuring method of aerosol scattering and moisture absorbing growth factors
  • Measuring system and measuring method of aerosol scattering and moisture absorbing growth factors

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Embodiment Construction

[0031] The present invention will be further elaborated below through specific embodiments in conjunction with the accompanying drawings.

[0032] Such as figure 1 As shown, in this embodiment, drying pipe 1, first and second turbidimeters 21 and 22, humidifying pipe 3, first and second three-way valves 3V1 and 3V2, first and second two-way valves 2V1 and 2V2, First and second water baths 41 and 42 and computer; Wherein, the air outlet of drying pipe 1 is connected to the air inlet of first turbidimeter 21 and the air inlet of humidification pipe 3 respectively; The air outlet of humidification pipe 3 is connected to The air inlet of the second turbidity meter 22; the first port ① of the first three-way valve 3V1 is connected to the water outlet of the humidification pipe 3, the second port ② is connected to the water inlet of the first water bath, and the third port ③ is connected to the second water bath 42 water inlet; the first port of the second three-way valve ① is conn...

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Abstract

The invention discloses a measuring system and measuring method of aerosol scattering and moisture absorbing growth factors. The measuring system comprises a drying pipe, a first nephelometer, a second nephelometer, a humidification pipe, a first three-way valve, a second three-way valve, a first two-way valve, a second two-way valve, a first water bath, a second water bath and a computer. According to the measuring system, an outer-layer casing pipe and an inner-layer semipermeable membrane pipe are adopted to form the humidification pipe, water in the humidification pipe and the water baths form a closed cycle, the water temperature is controlled by the water baths, and the highest relative humidity of a humidified aerosol sample can reach 95%; the two water baths are adopted to participate in humidification efficiency controlling, when the system runs, the working modes of the two water baths are staggered and are the heating mode and the refrigerating mode respectively, and therefore the time resolution can be increased by one time; in addition, in the whole circle period, the system is always in a relative humidity increasing period, and therefore effective data outputting is guaranteed.

Description

technical field [0001] The invention belongs to the field of aerosol detection, and in particular relates to an aerosol scattering hygroscopic growth factor measurement system and a measurement method thereof. Background technique [0002] Atmospheric aerosols can directly scatter and absorb solar radiation, and can also indirectly affect the radiation balance of the earth-atmosphere system by participating in cloud physical processes. The latest IPCC report shows that compared with other atmospheric components, including greenhouse gases, the uncertainty in the results of aerosol radiative forcing is still the largest. Accurate assessment of direct radiative effects of aerosols requires knowledge of the optical properties of atmospheric aerosols and their temporal and spatial distribution. Aerosol property observations are usually performed under dry conditions. When the relative humidity of the environment is high, the aerosol particles absorb water vapor, the particle s...

Claims

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Application Information

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IPC IPC(8): G01N15/00G01N15/02
CPCG01N15/00G01N15/0211
Inventor 赵春生旷烨刘宏剑赵罡
Owner PEKING UNIV
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