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36 metres/second
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What happpens to the flame when you slowly turn the gas off in a Bunsen burner?
When you reduce the gas, the flame goes down because you are starving the flame. Slowly turning off the gas is the correct way to put out a Bunsen burner. Never blow it out or gas will collect in the room.
How do you find burning velocity?
Laminar flame speed is a property of a combustible mixture.[1] It is the speed at which an un-stretched laminar flame will propagate through a quiescent mixture of unburned reactants. Laminar flame speed is given the symbol sL. According to the thermal flame theory of Mallard and Le Chatelier, the un-stretched laminar flame speed is dependent on only three properties of a chemical mixture: the thermal diffusivity of the mixture, the reaction rate of the mixture and the temperature through the flame zone:is thermal diffusivity,is reaction rate,and the temperature subscript u is for unburned, bis for burned and i is for ignition temperature.While the laminar flame speed is a property of the mixture alone, the same is not true for turbulent flame speed - or turbulent burning velocity as it is more correctly called. As flow velocity increases and turbulence is introduced, a flame will begin to wrinkle, then corrugate and eventually the flame front will be broken and transport properties will be enhanced by turbulent eddies in the flame zone. As a result, the flame front of a turbulent flame will propagate at a velocity that is not only a function of the mixture's chemical properties but also properties of the flow and turbulence.
Why a gauze is often placed over a burning flame for heating an object?
To prevent flame impingement on the vessel being heated, which could damage the vessel. A flame cannot pass through a gauze (or screen). as a proof you could set up a bunsen burner beneath a wire gauze. Turn the gas on and ignite the gas above the gauze. you will notice the flame will stay above the gauze. If you ignite the flame beneath the gauze and lower the gauze into the flame, the flame will not pass above the gauze. Yet, if you light both below and above the gauze you will have flame on both sides. Indicating that flames impinging on the gauze do not burn the gas completely and the gas will pass through the gauze.
Why is the nozzle hole much smaller than the gas inlet in the gas burner?
The "gas inlet" hole doesn't just let in gas - it lets in gas and a large amount of air - the two together are needed for proper flame. Burning the gas "raw" makes a lazy, yellow, smoky flame.
When is a Bunsen burner flame at its hottest and why?
When it is on a blue flame because the blue flame is hotter than the yellow flame due to the mixture of air and gas. Im Year 7 Guys you should know this!
Why is a flame a good symbol for natural gas?
Because the flame is the only symbol they could think of XD
After a natural gas well is drilled why is there a flame that comes out of the well?
After a natural gas well is drilled there will be a flame that comes out of the well for a while. This is so the pressure and flow of the gas can be tested. It is called gas flaring. It also burns off excess gas that might not be captured when they are collecting the gas.
How do you reuse natural gas?
You don't. Do you have a hot water heater? What do you suppose happens to the natural gas when it hits the flame down underneath?
How does a natural gas furnace work?
Natural gas furnaces work by combining natural gas with air and lighting it. This results in a flame that heats up the air and warms the rest of the house.
What kind of flame is more economical?
Methane (natural gas) is the most commonly used gas for residential heating. In rural areas where there are no pipes carrying natural gas and in recreational vehicles, propane and butane are commonly used.
How does pressure effect flame speed of natural gas?
Pressure is how much air or other substance is being pressed down onto something. High air pressure would mean flame being a bit explosive as there is a seemingly 'overabundant' amount of fuel now. Natural gas + flame+ high pressure= big explosion. Retract the high pressure part, and it turns into your basic flame thrower. Neeeaaat when you try it out. But, don't if you don't have the necessary safety equipment.
What does a blue flame with a yellow tip mean on a natural gas heater?
its heating
Will WD-40 explode on contact with natural gas?
WD-40 and natural gas both need a source of ignition like a flame to explode.
What size jet should I use in a 12000BTU LP gas burner if I change it over to burn Natural gas?
The surest way to get the right jet size is to ask the original manufacturer of the burner. Not all propane burners are suitable for changing to natural gas, although almost all natural gas burners are suitable for burning propane with a change of jet. The reason that some burners will not burn natural gas is that the flame speed is too low, and flame instability and lift-off can occur. If you cannot get a direct replacement size from the manufacturer, you can start by using a jet which is about 210% larger. As an example, a gas burner using a number 110 Amal jet on propane at 14" water gauge (37 mbar) will probably be OK with a No. 240 Amal jet on methane (natural gas) at 8" water gauge (20mbar). Similarly, a 75 jet on propane equates to a 160 jet on natural gas. After conversion, the air regulator may need to be adjusted to get the flame to stabilise, and the output on natural gas will be much greater than on propane.
What does the yellow gas flame means?
If you are burning natural gas, it means that the burner is dirty and not getting anough air. If left untreated it will lead to sooting and possibly carbon monoxide problems. Get the burner serviced immediately. If you are burning propane gas, there will be a yellow "tip" to the flame, this is a normal condition. The flame should not be all yellow however, this indicates the same problem as with natural gas.
Should I use propane or natural gas with my BBQ?
That is going to be up to personal preference. Propane tends to have a hotter flame than natural gas. Propane requires tanks, while natural gas can be piped in from your home service. I prefer natural gas, as grilling slow gives me better results than fast.
What has the author Fay Orr written?
Fay Orr has written: 'Harvesting the flame' -- subject(s): History, Natural gas, Gas industry, Cooperation
