Carbon dioxide labeled ventilation and air change measuring device outside building

Abstract

The invention discloses a carbon dioxide labeled ventilation and air change measuring device outside a building, and belongs to the building ventilation test field. The carbon dioxide labeled ventilation and air change measuring device outside a building includes a carbon dioxide labeling gas supply release mechanism and a gas sampling analysis mechanism, wherein the carbon dioxide labeling gas supply release mechanism includes a carbon dioxide gas bomb (9); an outlet of the carbon dioxide gas bomb (9) is connected with a gas inlet pipe (8); the gas inlet pipe (8) is connected with a labeled gas inlet thin pipe (6) through a gas flow control valve (5); the labeled gas inlet thin pipe (6) penetrates through the internal of an air hole (1); the gas sampling analysis mechanism includes a plurality of sampling test holes (7) in the air hole (1); each sampling test hole (7) is communicated with a gas outlet pipe (3) which is arranged outside the air hole (1); and the gas outlet pipe (3) is connected with a gas analyzer (2). The carbon dioxide labeled ventilation and air change measuring device outside a building has the advantages of being safe and healthy, being accurate in testing, being simple, and enabling the ventilation test inside and outside the air hole to be efficiency and economical.

Description

technical field [0001] The invention relates to the field of building ventilation testing, in particular to a carbon dioxide tracer building external ventilation and ventilation measuring device. Background technique [0002] The traditional test method for measuring ventilation and air changes outside buildings uses carbon monoxide gas as a tracer gas. The use of carbon monoxide gas may cause harm to human health and safety. At the same time, carbon monoxide is a flammable and dangerous gas. There have been explosions in carbon monoxide pressure storage bottles. For safety, only a small amount of carbon monoxide gas can be used to test the ventilation conditions of the space outside the building. The concentration of carbon monoxide used in the test in the wind tunnel is very low (tested in parts per million), which requires high testing equipment and accurate test data. Sexuality is easily disturbed, and data reliability is difficult to control. Contents of the inventio...

AI Technical Summary

Problems solved by technology

The use of carbon monoxide gas may cause harm to human health and safety. At the same time, carbon monoxide is a flammable and dangerous gas. There have been explosions in carbon monoxide pressure storage bottles.

For safety, only a small amount of carbon monoxide gas can be used to test the ventilation conditions of the space outside the building. The concentration of carbon monoxide used in the test in the wind tunnel is very low (tested in parts per million), which requires high testing equipment and accurate test data. Sexuality is easily disturbed, and data reliability is difficult to control

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