As it relates to hydrocarbon gases, blue flame is indicative of complete combustion whilst a yellow flame indicates incomplete combustion. The flame colour changes to orange, yellow or red flame and the flame wavers. Natural gas flame color orange indicates incomplete combustion. See the flame color temperature chart below:. Propane gas furnace flame color is the same as propane flame color. A gas fireplace flame color is yellow or red flames and is the exception to the rule.
Gas fireplace flame color is typically designed to burn with red flames, not blue flame, for a more natural look.
Wood logs do not burn with a blue flame colour, so a gas fireplace needs yellow or red flames for a realistic look and feel. It is also engineered to operate safely with yellow or red flames. This means that the gas fireplace flame colour breaks the rule of having a blue flame. They are also flued so there are no indoor emissions issues, should they produce some CO from the red flames.
Propane fireplace flame colour is typically yellow, as propane fireplace flame colour is designed to burn with a more natural look. As wood logs do not burn with a blue flame colour, neither should a simulated wood fire.
A propane fireplace needs yellow or red flames for a realistic look and feel. It is also engineered to operate safely with yellow or red flames, with a flue to eliminate indoor emissions. A gas cooker yellow flame indicates a combustion problem. A gas cooker or stove should have a blue flame. Propane torch flame temperature colour would also be blue flame. See the flame color temperature chart above.
The amount of oxygen supplied with the gas is the most important factor in determining the colour of the flame. The air to gas ratio for natural gas is around The air to gas ratio for LPG gases is higher.
The air to gas ratio for propane gas is approximately The air to gas ratio for butane gas is approximately To achieve this difference, LPG is typically provided in a smaller quantity but at a higher pressure, drawing more oxygen with it into the combustion process, giving LPG a higher air to gas ratio than for natural gas. A yellow or red flames on gas stove is dangerous, as it is indicative of incomplete combustion and carbon monoxide CO generation.
A gas cooker yellow flame is a dangerous safety problem, if it occurs with an indoor appliance like a gas stove. You could also be wasting gas. A blue flame means complete combustion is taking place. A key warning sign that you require gas appliance servicing are yellow or red flames or a gas flame colour with a yellow burning tip.
The exceptions to this are gas fireplaces and gas log fires that are designed to have a yellow or red flames. Burners blocked with dirt can result in improper combustion, leading to soot build up inside the appliance. Flames in a gas oven should burn with a blue flame colour, meaning complete combustion, as with other gas appliances.
Blue flame in gas oven applies to the flame color of propane or natural gas cooktops, as well. What are you wondering?
Wonder Words fire flame color burn hue fuel roasting perfection flicker hover reaction chemical entranced combustion composition temperature oxidant compound Take the Wonder Word Challenge. Join the Discussion. Tariya Apr 5, I think that s'mores are great like this website and fire is a great thing to learn about but be careful. Apr 9, Zac Feb 1, Feb 5, Oct 11, We appreciate your feedback about the photos for this Wonder, meshach!!
Ethan Pidgeon Apr 19, I love this article. I am a fire expert. Go on my soundcloud. My tracks are fire. Apr 19, Kaiden Fredrickson Feb 7, Feb 8, Glad you liked this one, Kaiden! Ahmad Mar 23, Hi, very useful information, but I doubt that the hottest flame is blue, I think it is black, based on religious information hell fire is black ; it was changed from one color to anther and eventually get black the hottest I have read many things about LPG flame color, some says the blue color is due to combustion of CO to CO2 and some others says it is due to waste gases produced also due to impurities.
Mar 23, Denzel Nov 30, Hi its me again what are s'mores I live in Australia so I have no clue what they are. Dec 2, Quinn Haper Apr 28, Wonderopolis Apr 29, Harry Apr 13, I liked agree with saige steavonson because the fire color does change. Wonderopolis Apr 13, That's right, Harry! The color changes depending on the temperature.
Great thinking! Dash Classroom Apr 13, We like to practice changing measurements between metric and US system measurements. It fans our flames sometimes even blue! GMc Apr 13, Thanks for the post - excellent but We know that you are U. Even brackets behind the U. Thanks for adding to the conversation!
Saige Stevenson Apr 13, I think that this is a very good question i mean fire is usually red and orange but when you cook on the stove it is blue and purple.
Related Wonders for You to Explore Match its definition: the spatial property resulting from the arrangement of parts in relation to each other and to the whole. Word Match Congratulations! Yellow flames such as those from a campfire or candle, come from the burning of relatively "dirty" fuels, in the sense that the fuel is not completely converted into carbon dioxide and water, but leaves little bits of unburned carbon.
Those bits of carbon get hot and glow, making the yellow light that you see. Once they cool a bit, those bits of carbon - and other unburnt stuff that isn't carbon dioxide or water vapor - also go into making smoke, which is why the clean, blue flames are smokeless, while the dirty, yellow flames come with smoke. You can easily do a little experiment at home to see this for yourself. Hold a spoon in a clean flame - a little bit of burning alcohol, say, or the gas flame of a stove - and you'll see that it comes back out fairly clean.
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