Published at Saturday, November 04th, 2017 - 00:52:10 AM. fire pits design. By michele rose.
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.
Whether fire is our friend or foe depends a lot on the way we treat it and our having a basic knowledge of its causes. This understanding will help us see the practicality and benefits of having a Fire Pit. What Is Fire? Although men had been using fire for thousands of years, its true nature was not known until experiments by Antoine Lavoisier and others in the 1700’s showed that fire marks a chemical reaction involving oxygen. I am sure that if they had put outdoor fire pits to good use, they could have figured this out way earlier! Anyway, they proved that oxygen is actually added during the burning process, although others before that had thought that fire resulted from the release of an imaginary substance called phlogiston. Fire is defined as the heat and light that come from burning substances - essential of course for every fire pit.
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