29
Nov
A bonfire stoked with charcoal and wood can get up to 1100 C 2000 F as can a laboratory Bunsen burner. The fire has to be much hotter than the metal to do this.
While forests can burn for months at a time there is a coalseam fire.
How hot is coal fire. I was always told coal ignites around 900 degrees farenheit. So I would guess around 900 to possible 1200 degrees around the fire box in the area directly next to the burning coals. I have a laser temp gun thats good to 1000 degrees if I try to take temp.
Inside a crucible coal can reach a temperature of 3500 degrees F. Outside of a crucible or forge coal can burn at a temperature as high as 3590 degrees F since theres more air and the coal wont lose energy warming up the forge. Start counting the number of seconds you can hold your hand in place before the heat forces you to pull away.
If you can hold your hand above the fire for no more than 2 seconds the heat level is hot about 500. If you can only hold your hand above the coals for 3 seconds the heat level is medium-hot about 400. Wood coals burn at 3-600 degrees.
You can get them hotter by providing lots of oxygen like in a blacksmiths setup but the way to tell is by the color of the coals. Based on the Black-body radiation since coals are black this is a good approximation you start to see a glow at about 500 deg C and it is easily visible at about 600C. It depends on how big the area and supply of coal.
As one example a trash fire caught a coal seam on fire in 1962 in Centralia Pennsylvania. A bonfire stoked with charcoal and wood can get up to 1100 C 2000 F as can a laboratory Bunsen burner. Of course the suns inner temperature of 2000000 C 3600000 F makes all of these values seem rather trivial.
Are Temperature and Flame Color Directly Related. William I looked it up and came up with this referring to coals. These have less moisture content and tend to be denser than a natural log so they burn hotter and longer.
While forests can burn for months at a time there is a coalseam fire. These coals will continuously light the coals adjacent to them. The process should take hours to complete.
The snake method should maintain a temperature between 225 degrees and 250 degrees Fahrenheit for twelve to fifteen hours. If you want to raise the temperature try opening the grill vents. And a hot coal in particular is covered with a thin layer of ash which is an even less effective conductor.
So what you have is something bad at transferring heat to your skin encased in something even worse at conducting heat ash. In addition to a hot coal being pretty weak when it comes to the transfer of heat energy so too are your feet. Blue red and orange all tell different temperatures of the flame and coals The hottest Part of a Flame is not the red part.
We tend to associate red with hot. In truth the hottest part of the flame will be the blue or white parts which can reach 1670 Degrees Fahrenheit 910C. This means that the maximum temperature of a coal fire in a forge is about 3500F 1927C.
Most organic compounds have a constant-pressure adiabatic flame temperature in. Lighting a coal fire neednt be a challenge. The secret to a great fire is to create a small combustion chamber that your fire can take hold of and quickly.
The fire has to be much hotter than the metal to do this. The white hot coals I have seen have been a relatively small area maybe baseball size entirely in the middle and later in the fire. I build my fires crisscross fashion with an inch or so air space between splits.
A can reach temperatures as hot as 1100 degrees Celsius 2012 degrees Fahrenheit. This is a temperature that is hot enough to melt aluminum. This is also hot enough to melt some metals.
Consider the three factors that are needed to make a good fire. Oxygen fuel and heat. Blacksmith forges can reach 3500 1977 if youre using a coal forge.
However the temperature varies based on the fuel type of forge and metal you work with. Not all forge welding projects require such a high temperature nor does all types of fuel reach this heat. This means that you will need to keep on adding more fuel until you are content with the temperature of the campfire.
The normal temperature which is also the highest temperature for a campfire ranges at approximately 1100 degrees Celsius which is 2012 degrees Fahrenheit. This temperature is attained when you have a well-stocked wood campfire. Coal Silo Fires and Hot Spots.
Extinguishing and Preventing Recurrence Many coal-fired power plants in operation today do not have a fire-extinguishing medium installed in their coal. Although coal fires could make one feel warm just by looking cheerful they were not ideal for heating. They caused draughts as they drew in oxygen from the air to burn.
And the radiant heat dried skin if one sat in the direct glare. It was all too common to have cold feet and a hot face. For every half dozen hot coals Im only able to turn one into a flame.
Should I let the coal smolder for a while before trying. Ive been placing shredded jute dryer lint and fine osage shavings over top of the coal on a piece of wood or bark then holding that up and trying to blow from beneath the coal as best I can to force the heat up into the tinder. Some fires along coal seams are natural occurrences.
Some coals may self-ignite at temperatures as low as 40 C 104 F for brown coal in the right conditions of moisture and grain size.