Blaze-arresters, which are equipped with temperature sensors on both sides of tape backup are suitable for bidirectional use. At immersions a potentially explosive gas mixture is passed through water with a minimum safe altitude. The water seal prevents so backward propagation of explosion (flame arrester).
Because of its complexity, is where most progress has been made thanks to advances in measurement and can be described various models. The first to publish a scientific study of blaze and its structure was Michael Faraday in 1908 with The Chemical History Of Candle in which a few simple experiments identified three areas in blaze:
In particular, blaze arrestor circumscribes the area where the combustion takes place, but this does not prevent the phenomenon will continue to take place in area upstream of this device. The fire-arrester has inside of channels narrow enough not to allow the continuity of blazes. These channels can be constituted by metallic nets very dense, perforated metal plates, or packing in bulk.
The deflagration is used to prevent the spread of explosion in quasi pressureless closed systems by the blaze is extinguished in backup. To this end, tape backups are used with narrow gaps and earlier gravel beds. They must be installed close to location of ignition. Upstream and downstream straight pipe lines shall not exceed a ratio of diameter to length (D / L) of 1:50.
Incandescence candle comes from the presence of solid particles in hot part and luminous blaze. These particles, which are essentially elemental carbon can deposit on the blade of spatula placing directly on a blaze. The candle wax is composed essentially of high molecular weight hydrocarbons. The heat from blaze of candle melts the wax, leaving the wick (wick which is in center of sail) immersed in it.
In industrial field, blaze-arresters can be inserted in correspondence of pipeline (in this case one speaks of "arresters in line"), or in correspondence of vent of tank containing flammable liquids or gases. The blaze arrestors in line in turn may have explosion-proof function (if they can stop the blaze of deflagration, which travel at speeds ofround 3-60 m / s) or antiknock (if they can stop the fire of detonation, traveling at speeds around 2000 m / s).
When the combustion of flammable element in an atmosphere rich in oxygen is produced, light emission, which can be intense, called blaze is observed. All reactions are highly exothermic combustion and release large amounts of energy as heat. The blaze is caused by the emission energy of atoms that some particles are in flue gas, when excited by the heat generated in such reactions. Serving as oxygen blaze is incorporated, we can distinguish: When blazes of fuel and oxidizer will premixed combustion, as in case of Bunsen burner. In these blazes combustion is more complete and allow to reach higher temperatures, presenting other features like blue.
In this process more heat than in previous case, so that blaze temperature increases and the color changes from yellow to blue is released. The domestic gas (methane, propane, butane) used for cooking is usually premixed with air to make the blaze is blue (this is to ensure complete combustion of gas introduced into burners). In laboratory is used when working with glass, torch oxygen / methane for scientific glass blowing. Its blaze is hot enough to melt quartz (the melting point of quartz is about 1,600 degrees C). In industry for higher temperature fire cutting and welding metals are needed.
Because of its complexity, is where most progress has been made thanks to advances in measurement and can be described various models. The first to publish a scientific study of blaze and its structure was Michael Faraday in 1908 with The Chemical History Of Candle in which a few simple experiments identified three areas in blaze:
In particular, blaze arrestor circumscribes the area where the combustion takes place, but this does not prevent the phenomenon will continue to take place in area upstream of this device. The fire-arrester has inside of channels narrow enough not to allow the continuity of blazes. These channels can be constituted by metallic nets very dense, perforated metal plates, or packing in bulk.
The deflagration is used to prevent the spread of explosion in quasi pressureless closed systems by the blaze is extinguished in backup. To this end, tape backups are used with narrow gaps and earlier gravel beds. They must be installed close to location of ignition. Upstream and downstream straight pipe lines shall not exceed a ratio of diameter to length (D / L) of 1:50.
Incandescence candle comes from the presence of solid particles in hot part and luminous blaze. These particles, which are essentially elemental carbon can deposit on the blade of spatula placing directly on a blaze. The candle wax is composed essentially of high molecular weight hydrocarbons. The heat from blaze of candle melts the wax, leaving the wick (wick which is in center of sail) immersed in it.
In industrial field, blaze-arresters can be inserted in correspondence of pipeline (in this case one speaks of "arresters in line"), or in correspondence of vent of tank containing flammable liquids or gases. The blaze arrestors in line in turn may have explosion-proof function (if they can stop the blaze of deflagration, which travel at speeds ofround 3-60 m / s) or antiknock (if they can stop the fire of detonation, traveling at speeds around 2000 m / s).
When the combustion of flammable element in an atmosphere rich in oxygen is produced, light emission, which can be intense, called blaze is observed. All reactions are highly exothermic combustion and release large amounts of energy as heat. The blaze is caused by the emission energy of atoms that some particles are in flue gas, when excited by the heat generated in such reactions. Serving as oxygen blaze is incorporated, we can distinguish: When blazes of fuel and oxidizer will premixed combustion, as in case of Bunsen burner. In these blazes combustion is more complete and allow to reach higher temperatures, presenting other features like blue.
In this process more heat than in previous case, so that blaze temperature increases and the color changes from yellow to blue is released. The domestic gas (methane, propane, butane) used for cooking is usually premixed with air to make the blaze is blue (this is to ensure complete combustion of gas introduced into burners). In laboratory is used when working with glass, torch oxygen / methane for scientific glass blowing. Its blaze is hot enough to melt quartz (the melting point of quartz is about 1,600 degrees C). In industry for higher temperature fire cutting and welding metals are needed.
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