Smog chamber

Abstract

The invention provides a smog chamber, which belongs to the technical field of atmospheric chemical reaction experiments. The smog chamber includes a framework, an obstacle crossing supporting pole, achamber body, and a temperature control assembly; rolling wheels are disposed on the bottom of the framework; the obstacle crossing supporting pole is detachably installed on the outer sides of the rolling wheels; the obstacle crossing supporting pole extends from the edge of the rolling wheels, and a protruding end is used for abutting against the ground and the rolling wheels are raised and anobstacle is crossed by the forward thrust force; the chamber body is fixed in the framework; a temperature probe is arranged in the chamber body; ventilation holes are disposed on the chamber wall ofthe chamber body; the ventilation holes are used for introducing a reaction gas and connecting a monitoring instrument; and the temperature control assembly is fixed on the framework and is provided with a heat exchange element that is closely attached to the outer wall of the chamber body. The smog chamber provided by the invention can conveniently move between indoors and outdoors, and is also provided with a temperature control device to ensure that the temperature inside the chamber body is maintained at the temperature required for an experiment.

Description

technical field [0001] The invention belongs to the technical field of atmospheric chemical reaction experiments, and more specifically relates to a smoke box. Background technique [0002] In recent years, ozone (O3) and fine particulate matter (PM2.5) have become one of the important environmental problems facing our country. Volatile organic compounds (VOCs) can generate O3 with nitrogen oxides and hydroxyl radicals under the action of photochemical reactions. And secondary products such as secondary organic aerosols. In response to the current situation of air pollution, researchers have increasingly studied the photochemical reaction mechanism of VOCs. One of the important tools used in this study is the smoke chamber, which is essentially a photochemical reaction simulation device, which can separate chemical reactions from complex meteorological conditions and study the influence of a single factor on chemical reactions. Smoke chambers can be divided into indoor smo...

AI Technical Summary

Problems solved by technology

The indoor smoke box uses light to simulate sunlight, which has the disadvantage of insufficient light intensity and cannot fully simulate the sunlight spectrum; the outdoor smoke box is usually large in size and inconvenient to move; in addition, the outdoor smoke box is exposed to sunlight, and the box is completely closed, which is easy to cause The temperature inside the chamber is too high to simulate real environmental conditions

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