I always pick NG first, then propane. But I do it to save money and increase reliability. Gen sets are really difficult to maintain in that they are easy to forget about. Both NG and propane burn cleaner and cause less troubles.
On Fri, Dec 2, 2016, 7:57 PM Chuck McCown <[email protected]> wrote: > I agree, but my application is primary power, not emergency. > > *From:* Eric Kuhnke > *Sent:* Friday, December 02, 2016 6:53 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] generator fuel > > I don't think it's fair to directly compare diesel fuel to natural gas, > because one is portable in just about any container (in a real emergency), > the other is not. > > > http://www.datacenterknowledge.com/archives/2012/10/31/peer-1-mobilizes-diesel-bucket-brigade-at-75-broad/ > > On Fri, Dec 2, 2016 at 5:49 PM, Chuck McCown <[email protected]> wrote: > > I am assuming a BTU of fuel will make so many Wh of energy. > > If perfectly efficient 1M BTU =292.3 kWh > That would cost me *$35* from the power utility. > > A gallon of diesel is abou $3.25 around here. 139000 btu. > Diesel then is about $23 per 1M btu. > However diesel engines are only 30% efficient so it will cost me *$76* in > fuel to make that 292.3 kWh > > If that assumption is approximately correct: > I pay about $7.80 per decatherm in the winter for NG. A decatherm is 1 > million btu > About half that in summer. > > $7.80/.3= *$26*/293.3 kWh for NG not considering depreciation and maint > of the generator. > > It seems to me that NG is the hands down fuel cost winner? Anyone see > mistakes in this? > > > >
