Good point regarding energy density.. LPG - 84,000 btu/gallon / $1.29 per gallon = 65,000 btu / $ Gasoline with Ethanol - the crap we have here - 112,000 btu/gallon @ $3.60 per gallon = 31,000 btu / $
That is with road tax on both fuels. So gasoline is over twice the price of propane right now. Natural gas is even cheaper but I don't have a natural gas line at my house and the compressor to fill the tank to 4000 psi or so is expensive. Plus I only got about 120 miles out of the tank when it was full. I can refill the truck myself. I already refill other cylinders off the bulk tank now. If I run out, I can run it on unleaded gas - most propane setups are dual fuel. I'd like to put a 30 gallon propane tank in the Ford Ranger pickup bed - and even at 16 mpg I should be good for almost 500 miles. Dave On 8/7/2012 1:11 AM, Peter Blodow wrote: > Gene, > please don't forget to take into account that liquefied gases have a > density of less than two thirds of gasoline and even less than diesel > fuel. Methane (CNG, CH4) is even lighter than butane (C2H6) or propane > (LPG, C3H8). In addition, their thermal yield is about 10 to 20% lower > per mass unit than that of liquid fuels (I didn't bother looking up the > exact figures). Multiply those figures and you'll end up with less than > half the energy content of gasoline. > > A lot of people over here in Germany converted their cars and were > disappointed. In France, however, the government financially supports > the use of LPG which boosted the conversion a lot, especially with small > cars. > A second obstacle is the lack of "gas" stations compared with the > density of normal fuel supply stations. > > Peter > > > Gene Heskett schrieb: > >> At the prices quoted here, the propane must be free, because that is about >> what the taxes would be. >> >> I've not found any of it thats free yet. My grill takes the 4.5 gallon >> hideaway tanks& we're paying about $7.50 a gallon, for off road use. Its >> a damned racket, ought to be subject to RICO. >> >> Cheers, Gene >> >> > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
