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Ford Raptor Forums - General Information
Off-Roading Your Raptor
EV Trucks Off-Road, what range do you think we'll see
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<blockquote data-quote="B E N" data-source="post: 1616275" data-attributes="member: 33355"><p>Thats not magic, or variable.</p><p></p><p>1 BTU= 0.293071 W</p><p>1 gallon of gas 116,090 Btus</p><p>1 gallon ethanol 53,956 BTUs</p><p></p><p>Figure out what your mix percent is, around here 10% ethanol is common so</p><p></p><p>.9 x 116090 + .1 x 53956 = 109876.6 btu in E10 fuel</p><p></p><p>109876.6btu x .293071btu/W = 32,201 watts per gallon. x.001 = <strong>32kw per gallon</strong></p><p></p><p>Usually figure <strong>an engine is around 30-36% thermally efficient</strong>, assume 33. So a gallon of gas is equivalent to about 10.6kw, there is a little loss in electric vehicles, but even if they were perfect these battery banks are a tough sell for off road.</p><p></p><p>Using these assumptions A <strong>36 gallon raptor tank is 382 KW</strong>... and refills in minutes. Pretty easy to throw an extra 10-15 gallons of gas cans in the bed as well, so thats another 105-158kw of usable energy.</p><p></p><p>Quick change battery banks are becoming a thing, which means a recharge pit could be just minutes in a race scenario, this could become as fast as a tire change. </p><p></p><p>Hydrogen is a major problem. The fuel itself requires a specialized cell to be safe in an accident and that tech is currently big bucks, the rest of the tech is already there. You could buy hydrogen at a gas station in California at one time. Compressing hydrogen into a race car tank would be about 1/5th as exciting as watching a battery change, and take the same time.</p></blockquote><p></p>
[QUOTE="B E N, post: 1616275, member: 33355"] Thats not magic, or variable. 1 BTU= 0.293071 W 1 gallon of gas 116,090 Btus 1 gallon ethanol 53,956 BTUs Figure out what your mix percent is, around here 10% ethanol is common so .9 x 116090 + .1 x 53956 = 109876.6 btu in E10 fuel 109876.6btu x .293071btu/W = 32,201 watts per gallon. x.001 = [B]32kw per gallon[/B] Usually figure [B]an engine is around 30-36% thermally efficient[/B], assume 33. So a gallon of gas is equivalent to about 10.6kw, there is a little loss in electric vehicles, but even if they were perfect these battery banks are a tough sell for off road. Using these assumptions A [B]36 gallon raptor tank is 382 KW[/B]... and refills in minutes. Pretty easy to throw an extra 10-15 gallons of gas cans in the bed as well, so thats another 105-158kw of usable energy. Quick change battery banks are becoming a thing, which means a recharge pit could be just minutes in a race scenario, this could become as fast as a tire change. Hydrogen is a major problem. The fuel itself requires a specialized cell to be safe in an accident and that tech is currently big bucks, the rest of the tech is already there. You could buy hydrogen at a gas station in California at one time. Compressing hydrogen into a race car tank would be about 1/5th as exciting as watching a battery change, and take the same time. [/QUOTE]
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Ford Raptor Forums - General Information
Off-Roading Your Raptor
EV Trucks Off-Road, what range do you think we'll see
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