By karriven thomas. fire pits design. Published at Friday, November 10th, 2017 - 10:24:18 AM.
The burning process can be illustrated by an examination of the flame of a candle. The wax does not burn directly, but, rather, gas given off by the heated wax travels up the wick and burns. Prove this by blowing out a candle that has been burning for some time. Then pass a lighted match through the trail of smoke rising from the wick. A flame will travel down the smoke to the wick and relight the candle. There are three areas in the flame produced by fire pits: (1) the dark inner area of no combustion and (2) an intermediate layer of incomplete combustion, composed of hydrogen and carbon monoxide that gradually work their way to (3) the outside cone of complete combustion.
One thing most people who are interested in fire pits should know is that you should think about the location of the fire pit even before you start building it, there is great importance to the location, as it will affect the frequency of use and the whole look of the outdoor space in which it is positioned. Many are to eager to have a fire pit and than build one that is too small to use for lighting proposes or for heat generation during cool nights, and unfortunately loss a lot of the potential of their fire pit. There are many reasons to why fire pits are becoming so popular and there have been many answers to this phenomena, but the real fact is the most of us just enjoy fire and like to have it around for cooking and heat, as well as for providing more character and charm to our backyards.
HEAT: Generally, heat is provided from an outside source, such as a match or spark, and then the fire produces enough of its own heat to be self-supporting. If we reduce the temperature of a burning substance below its kindling point, the fire in all fire pits will go out. Sometimes enough heat is generated within substances, such as in a pile of oily rags, to cause them to burst into flames. This is called spontaneous combustion. Certain bacteria in moist hay can cause the temperature to rise rapidly, causing the hay to burn. These sources of heat cannot be ignored when considering fire prevention and safety, and in deciding what to burn in your outdoor fire pit.
Simple and inexpensive wood burning fire pits can be built in the ground using the now classic method found in campsites and parks today. It’s as easy as 123.1-Dig a hole in the ground. 2-Add gravel and sand for drainage and and to provide a level base. 3-Line it with a metal ring to help contain the flames and focus the heat. Some local authorities only allow fire pit’s that are raised up off the ground, so please check first!! Root fires are a concern so don’t forgo the gravel and sand layer. Some local authorities insist on a base of 25cm if the fire pit is not sitting directly upon a rock outcrop! If you have decided to burn gas then you can either run gas lines to the fire pit or incorporate a propane tank into the design, preferably concealed. We strongly suggest using a certified technician when connecting natural gas or propane to any fire feature. Gas fire pit kits come in all shapes and sizes. You can buy burner kit to incorporate into your design or an entire structure that comes ready for you to apply your finish of choice.
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