This site2019-09-28 10:22:08
The production of carbon monoxide in underground garages mainly originates from automobile engines. When the engine is running at idle, due to insufficient combustion of gasoline, exhaust gas containing a large amount of CO will be generated. The underground parking lot is a closed environment. Vehicles come in and out frequently, and the exhaust gas is not easy to be discharged. It is easy to accumulate a large amount of CO gas, which causes a pungent odor to permeate the parking lot and damages human health. If the gas concentration is too high, it will cause fire and explosion.
Under standard conditions, pure carbon monoxide (CO) is a colorless, odorless, and non-irritating gas.
Carbon monoxide is easily combined with hemoglobin to form oxyhemoglobin, which causes hemoglobin to lose its ability and function to carry oxygen, causing tissue suffocation and death in severe cases.
Carbon monoxide has a toxic effect on tissue cells throughout the body, especially the cerebral cortex.
CO is found in metallurgy, chemistry, graphite electrode manufacturing, domestic gas or coal stoves, and automobile exhaust.
Carbon monoxide is the most widely distributed and most abundant pollutant in the atmosphere, and it is also one of the important pollutants generated during the combustion process. The main source of CO in the atmosphere is the exhaust of internal combustion engines, followed by the combustion of fossil fuels in boilers.
CO is one of the products of incomplete combustion. If a well-organized combustion process is available, that is, with sufficient oxygen, sufficient mixing, high enough temperature, and long residence time, the intermediate product CO will eventually burn out and generate CO₂ or H₂O. Therefore, controlling CO emissions is not an attempt to suppress its formation, but an effort to burn it completely.
The carbon monoxide CO gas detector will detect the CO gas concentration and transmit it to the control system. Once the CO concentration reaches the lower limit alarm value, the control system will issue an audible and visual alarm and output a low limit alarm signal to start the exhaust fan or now monitor the safety personnel to take More effective measures to reduce the CO gas concentration on site.