A system for measuring emission characteristics of building materials in indoor environment and its environmental chamber

Abstract

The invention provides a system for measuring the emitting characteristic of building materials in an indoor environment and an environmental chamber of the system.The emitting characteristic of the indoor building materials can be precisely measured, and the concentration of SVOC gas phases and particle phases in the building materials can be detected.The environmental chamber comprises a shell, a generating chamber and a sampling chamber, wherein the generating chamber and the sampling chamber are arranged in the shell in a sealed mode.The generating chamber and the sampling chamber are isolated from the shell, and an interlayer is formed.A heating device is arranged in the interlayer.A control device of the heating device is arranged on the shell.The generating chamber and the sampling chamber are connected through two horizontally parallel sampling channels.A chamber cover capable of being opened, an air inlet for supplying air, and a lead opening for being connected with an external probe are arranged on the generating chamber.Particle phase collecting devices and / or gas phase collecting devices mounted on the sampling channels are arranged in the sampling chamber.The free ends of the sampling channels are arranged to penetrate through the rear portions of the sampling chambers.Temperature sensors are arranged in the generating chamber and the sampling chamber respectively.The output ends of the temperature sensors are connected with the input end of the control device.

Description

technical field [0001] The invention belongs to the field of indoor environment detection, and relates to a quantitative and qualitative analysis and detection system for indoor building materials and chemical pollutants, in particular to a system for measuring emission characteristics of building materials in an indoor environment and an environmental chamber thereof. Background technique [0002] With the improvement of modern people's living standards, people have higher and higher requirements for the beauty, convenience and comfort of the indoor environment. Various building materials, furniture, stone materials, and paints are widely used, resulting in more and more indoor chemical pollution. Severe and complex. The survey report of the US Environmental Protection Agency shows that the air pollution in many buildings is more serious than that outside, and the quality of indoor air quality IAQ (Indoor air quality) is closely related to human health. At present, the ind...

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Problems solved by technology

However, if the indoor pollution detection is carried out for each room, on the one hand, many problems will be encountered in the on-site detection. On the other hand, the size, temperature, relative humidity, ventilation rate and other parameters of different rooms make the detection data comparable. Reduced, it is difficult to obtain the emission characteristics of specific substances

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