how much energy does fire produce?
477138
Fire is hot because the conversion of the weak double bond in molecular oxygen, O2, to the stronger bonds in the combustion products carbon dioxide and water releases energy (418 kJ per 32 g of O2); the bond energies of the fuel play only a minor role here.
1231104
Gas is often much cheaper than other sources of heating – up to 70% compared to electric fires. This is because gas has its own source, whereas electric is heated via another source. Gas fires will typically cost around 5 pence per KW to run – which when compared to electric may cost around 15p per KW.
405588
is that fire is (uncountable) a (usually self-sustaining) chemical reaction involving the bonding of oxygen with carbon or other fuel, with the production of heat and the presence of flame or smouldering while wildfire is a rapidly spreading fire, especially one occurring in a wildland area.
747686
Is it Expensive to Run a Gas Fireplace? Typically, with gas fires it only costs around 5 pence per KW to run – when compared to electric which typically costs around 15p per KW and bioethanol which can cost up to 90p per KW, this is by far the most efficient.
269451
Fires are thought to be carbon neutral, but climate change may limit how well forests can grow back. The fires have already released enough carbon dioxide to rival Australia's annual human-caused emissions: An estimated 400 million tons of carbon have been released from the fires, according to NPR.
208230
Looking at the models above if we needed 2kw to heat the room this is what we would need to buy and the costs: Electric Fireplace – 2kw – 30p per hour. Flueless Gas Fire – 2kw – 10p per hour. Wood Burning Stove – 2.35kw – 23.5p per hour.
127040
Assuming most of this energy leaves us in the form of heat, I calculate that on average we radiate ~350,000 J of energy per hour. Since Watt is just Joules per second, this is roughly equal to energy given off by a 100 Watt light bulb!
860987
Emission of radiation A fire emits radiation, which human eye experiences as the visible yellow red flames and heat. In fact, during a fire, relatively sparsely UV energy and visible light energy is emitted, as compared to the emission of Infrared radiation.
1464977
The flames on electric fireplaces are created with LED's, which we all know by now are extremely efficient and cost-effective. So, when the flames are on without the heater being turned on, an electric fireplace is using less than $0.01 per hour of electricity.
967970
Electric Fireplace – 2kw – 30p per hour. Flueless Gas Fire – 2kw – 10p per hour. Wood Burning Stove – 2.35kw – 23.5p per hour. Open Flame Wood Burner – 8kw – 80p per hour.
1005003
The products of a fire are composed partly of gases such as carbon dioxide and water vapor. The entropy of the system increases during a combustion reaction. The combination of energy decrease and entropy increase dictates that combustion reactions are spontaneous reactions.
8598
While many believe that electric fireplaces are high energy consumers, this is a myth. Based on average electricity rates, the total cost to operate the flame and heater of a 2kW electric fire constantly for two hours costs little more than £2 on a standard tariff.
1166370
The thermal energy produced by burning one gallon of octane using 3.8L with a density of 0.70g/mL is 126, 646kJ. Suppose a car operates so inefficiently that only 16% of the thermal energy from burning fuel is “useful” energy.
573632
The sun releases energy at a mass–energy conversion rate of 4.26 million metric tons per second, which produces the equivalent of 384.6 septillion watts (3.846×1026 W).
1195792
When they calculate total global CO2 output, scientists don't include all wildfire emissions as net emissions, though, because some of the CO2 is offset by renewed forest growth in the burned areas. As a result, they estimate that wildfires make up 5 to 10 percent of annual global CO2 emissions each year.
500821
Fuel, heat and oxygen are all needed in the right combina- tion to produce fire. These three in combination are called the fire triangle. We all know that a triangle has three sides and if one side is taken away the triangle cannot support itself. The same is true of fire.
1028257
Each hour 430 quintillion Joules of energy from the sun hits the Earth. That's 430 with 18 zeroes after it! In comparison, the total amount of energy that all humans use in a year is 410 quintillion Joules. For context, the average American home used 39 billion Joules of electricity in 2013.