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Energy content of fuel
The specific energy content of a fuel is the heat energy obtained when a certain quantity is burned (such as a gallon, litre, kilogram, etc.). It is sometimes called the "heat of combustion". There exists two different values of specific heat energy for the same batch of fuel. One is the high (or gross) heat of combustion and the other is the low (or net) heat of combustion. The high value is obtained when, after the combustion, the water in the "exhaust" is in liquid form. For the low value, the "exhaust" has all the water in vapor form (steam). Since water vapor gives up heat energy when it changes from vapor to liquid, the high value is larger since it includes the latent heat of vaporization of water. The difference between the high and low values is significant, about 8 or 9%. This accounts for most of the apparent discrepancy in the heat value of gasoline. In the U.S. (and the table below) the high heat values have traditionally been used, but in many other countries, the low heat values are commonly used.
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Fuel type
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MJ/L
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MJ/kg
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BTU/Imp gal
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BTU/US gal
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Research octane number (RON)
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Regular Gasoline / Petrol
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34.83
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~47
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150,100
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125,000
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Min 91
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Premium Gasoline / Petrol
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Min 95
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Liquid hydrogen
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9.36
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140.4
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40,467
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33,696
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Ethanol
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23.5
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31.1[1]
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101,600
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84,600
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129
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Methanol
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17.9
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19.9
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77,600
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64,600
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123
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Gasohol (10% ethanol + 90% gasoline)
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33.7
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145,200
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120,900
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93/94
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Diesel
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38.60
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166,600
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138,700
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N/A (see cetane)
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Biodiesel
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35.10
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39.89
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151,600
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126,200
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Vegetable oil (using 9.00 kcal/g)
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34.32
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37.66
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147,894
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123,143
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Aviation gasoline
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33.5
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46.8
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144,400
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120,200
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Jet fuel, naphtha
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35.5
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46.6
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153,100
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127,500
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Jet fuel, kerosene
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37.60
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162,100
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135,000
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Liquefied natural gas
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25.3
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~55
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109,000
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90,800
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Neither the gross heat of combustion nor the net heat of combustion gives the theoretical amount of mechanical energy (work) that can be obtained from the reaction. (This is given by the change in Gibbs free energy, and is around 45.7 MJ/kg for gasoline.) The actual amount of mechanical work obtained from fuel (the inverse of the specific fuel consumption) depends on the engine. A figure of 17.6 MJ/kg is possible with a gasoline engine, and 19.1 MJ/kg for a diesel engine. See specific fuel consumption for more information.
Other Sites on the net doing the same thing. www.thermo1.com
http://www.haw-system.jp/English/hawE.html
http://www.runyourcarwithwater.com/
http://www.waterforfuel.com/
http://www.waterfuelconverters.com/
http://www.waterpoweredcar.com/
http://water4gas.com/
http://www.fuelfromh2o.com/ Poor experiences reported. http://www.magdrivehydro-gen.com/ same as the site above. http://msgboard.snopes.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=56;t=002848;p=0
Welcome to h20 2 hho, we are glad you came. The Simple Version
- Using electrolysis we separate the hydrogen and oxygen and feed the gases into the intake of your car. The onboard computer then leans out the fuel to maintain a consistent fuel to air ratio.
- What we do
- We custom build and test a unit to fit the size of your vehicle and then install it professionally.
What can you expect?
- You should expect a sleek and professional unit with safety modules built
- in and easy identification of levels and conditions.
- You can expect to see about a 10% to 30% increase in fuel economy.
- Diesel is 50% More
- Lower emissions and increase in power.
- You may be able to apply for hybrid status depending on your state.
How do you get one?
- please call or email us for an appointment. 1-800-214-7331 sales@h202hho.com
- What vehicles will this work on? All
We are now accepting 1995 and newer vehiles for our standard unit. This includes Gas, Diesel and Flex Fuel 1 through 12 cyclenders. Fleet Trucks welcome, and we offer Fleet Discounts. if you have a vehicle older or doesnt fit these parameters dont be discouraged, we will just need more info from you and it may take more time to fine tune a device for your vehicle. If we dont have it we will make it!
In addition we will not hide or mislead you in anyway as to the expiations of how the unit should work and what its processes are.
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