By magaly basler. fire pits design. Published at Wednesday, November 15th, 2017 - 09:41:17 AM.
OXYGEN: Although there are other chemicals that can combine with fuels to produce heat, oxygen is the most common. The need for oxygen to sustain a fire in all fire pits is shown by the fact that fuels heated in a vacuum will not burn. Sorry there will be no outdoor fire pits in space! CHEMICAL REACTION: There are certain conditions under which fuels will not produce a flame, even though fuel, heat and oxygen are present. For example, if the percentage of natural gas in air is not between about 4 percent and 15 percent, no flame will be produced; your fire pit will not go!
When looking for a Fire Pit, one of the most important considerations is your space - and not just size and location. Do you have a physically large space or a small one? Are you considering a Fire Pit for ambiance, warmth, or for a multi-purpose solution - like a fire and a grill or a fire table? Do you want a personal Fire Pit for indoor use? Do you like metal, ceramic, stone, or glass? Do you want a portable unit? What type of fuel do you want to use? Evaluate the location itself and determine what size (diameter) best fits your location, fuel type, requirements, and seasonal usage. Other considerations include: How large of an area can your Fire Pit occupy? Evaluate the dimensions of the Fire Pit and your physical space. The primary measurement is the width - so look at your space and see if the width of the unit will accommodate your selected location. If you have trouble visualizing space, get a piece of newspaper, measure a circle or square based on the diameter of the unit you are considering, cut it out and place the newspaper in your location. Once you’ve figured out the width, then evaluate the height. Fire Pits have a wide array of heights - ranging form short portable units to Pagodas. Look at your space and determine if the height is appropriate. Additionally, don’t forget to look at the base - FirePits have a variety of base designs and you should make sure you like the base too.
FUEL: Given the right circumstances, most substances will burn or combine with oxygen in combustion, a chemical process that liberates heat. (Remember that fire is the heat and light resulting from combustion.) However, the temperature at which things will burn in fire pits, called the ignition point or kindling point, varies according to the substance. For example, the kindling point of film, nitrocellulose, is only 279 degrees Fahrenheit - not recommended for use in fire pits. For wool it is 401 degrees Fahrenheit - obviously making fire pits hard to light, and for newsprint 446 degrees Fahrenheit - perfect for fire pits. What Fuel should I use in my Fire Pit? Wood or charcoal can be used in most fire pits. Some fire pits run on gas, a great alternative. See Artistic Fire Pits for converting your fire pit to gas.
In describing the basic essentials for fire, many speak of the "fire tetrahedron." In other words, besides the original "fire triangle" of fuel, heat and oxygen, they add the fourth essential of chemical reaction. Fire pits use all four! It is necessary for us to understand the part each of these plays in producing fire so that we can put it to use in either lighting our fire pit and preventing or extinguishing unwanted fires. For example, to put out a grease fire on the stove, turn off the stove (removing the heat) and cover with a lid (removing the oxygen that feeds the fire). This will also benefit those contemplating buying a fire pit, helping them to decide which fire pits are best for them. So to get a better idea of what causes fire in your fire pit, let’s take a look at these four basic elements.
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