Glossary

1) The ignition temperature is the critical temperature. It can only burn when it reaches the critical temperature. Each substance has different ignition critical temperatures due to its own characteristics, some are very high and some are very low. Catalytic combustion is to reduce the critical temperature of substances with higher combustion critical temperatures through catalysts, so that they can start burning at low temperatures. 2) The emission rate refers to the mass of pollutants emitted from the exhaust pipe at a certain height in any one hour, in kg/h. 3) Heat exchange efficiency 1. Full heat exchange efficiency: E=(1'2'+45)/1'5 =1-(ts2-tw2)/(ts1-tw1) 2. General heat exchange efficiency E'=12/13 =1-(t2-ts2)/(t1-ts1) 4) Pile specific gravity is the weight per unit volume (including the void volume) of a pile of objects when they are normally stacked, not the physical density of its main components, in g/cm3. 5) Flow velocity When a fluid flows in a pipeline, the distance it flows within a certain period of time is the flow velocity. The flow velocity generally refers to the average flow velocity of the fluid, in m/s. 6) LEL "LEL" refers to the lower explosion limit. The lowest concentration of flammable gas that explodes when encountering an open fire in the air is called the lower explosion limit—abbreviated as %LEL. English: Lower Explosion Limited. This post was last written by zsy_Edited by lucky on 2009-2-26 20:59 ]