OK, Uncle Cecil, we need a bet settled. The other night while trying to light a fire in the backyard, my wife claimed that the hottest part of her lighter flame was the blue part close to the lighter. I corrected her, letting her know the tip of the flame is the hottest. I distinctly remember being told that the closer brighter? Please settle this bet so I can avoid doing laundry for two months.
Two problems, Damien. Second, you wrote this question in That laundry must be really piling up. Analysis of a flame can be quite complex. Coal and solid fuel flames my specialty are the most complex, followed in difficulty by liquid fuel flames, and finally gaseous fuel flames.
The hottest portion of the flame typically is in and immediately outside this zone, which is filled with the immediate products and partial-products of the chemical reaction known as combustion.
Which part of the combustion zone is the hottest? Peak temperatures are more uniform than you might expect along the length of the flame. Measurements of a 79 mm methane flame, a mm methane flame, and an 88 mm ethylene flame see Santoro below all generally showed slightly higher temperatures by degrees K near the base. The magenta curve corresponds to a level near the base of the flame, and the light blue curve corresponds to a level near the tip. You can see from the graph that the peak temperatures at the top of the flame are slightly lower than those at the middle and base.
Temperature is only part of the equation, though. Why is there more heat in the tip? Because the non-burning center of the lower part of the flame is relatively cool, whereas all of the tip is aflame and thus uniformly hot throughout. Apart from incombustible elements, the color of a hydrocarbon flame is primarily dependent on the richness of the flame — that is, on how much oxygen there is to combust the fuel.
Non - luminous flames are the ones that burn blue. Because luminous flames don't burn as efficiently as non - luminous ones, they don't produce as much energy. This means that the non - luminous flames have a lot more energy than luminous ones, and their flames are actually hotter. The hottest part of the burner flame is at the tip of the inner cone, where a rich supply of air ensures the nearly total combustion of the gas. The yellow arises from incandescence of very fine soot particles that are produced in the flame.
The pull of gravity draws colder, denser air down to the base of the flame , displacing the hot air, which rises. This convection process feeds fresh oxygen to the fire , which burns until it runs out of fuel. The upward flow of air is what gives a flame its teardrop shape and causes it to flicker. Blue flames are hotter than yellow flames and will therefore heat quicker.
The hottest part of the flame is the top of the inner blue cone. A non - luminous flame is colourless and is much hotter. A non - luminous flame undergoes complete combustion as it draws much more oxygen and gets much hotter. While a luminous flame burns yellow, a non - luminous flame burns blue; this is because of the difference in available levels of oxygen. Luminous flames have limited access to oxygen, while non - luminous flames have unlimited access to oxygen. The temperature of a Bic lighter can reach nearly 1, degrees Celsius or 3, The temperature of a lighter's flame depends on what type of fuel the lighter uses.
Bic lighters use butane and are called butane lighters. Observe the small hole in the center of the base. This hole allows a flammable gas to flow into the barrel by way of the gas spigot and hose. Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere.
Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time. What is the hottest part of the flame? Category: hobbies and interests candle and soap making. Actually, the hottest part of the candle flame is the blue part , at degrees F C. Winnie Dzhindo Teacher. How hot is violet fire? Violet light can sometimes glow at around 71, degrees Farenheit. For reference our sun burns at 8, degrees Fahrenheit , glowing in white and yellow!
Mimuntz Pesek Supporter. What flames stand for? You get the name of two people. Cross out the similar letters in their names, and then total the number of the remaining letters. Abdeselam Cerrejon Supporter. How are flames produced? At a certain point in the combustion reaction, called the ignition point, flames are produced. The flame is the visible portion of the fire. Flames consist primarily of carbon dioxide, water vapor, oxygen and nitrogen.
If hot enough, the gases may become ionized to produce plasma. Nadine Cova Supporter. Is a burning candle luminous? The luminous zone is where the free carbon burns and releases light. The burning of a candle flame is a very complicated process. Liquid wax is drawn up the wick by capillary motion and vaporized with oxygen.
Soot is raised up to the top of the flame where the very strong temperature burns it. Xenxo Lamberto Beginner. Why is a flame shaped like a teardrop? The pull of gravity draws colder, denser air down to the base of the flame , displacing the hot air, which rises. This convection process feeds fresh oxygen to the fire , which burns until it runs out of fuel. The upward flow of air is what gives a flame its teardrop shape and causes it to flicker.
Mariel Vilallonga Beginner. How hot is green fire? Common temperatures. Ask A Question. Co-authors:
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