## Re: [new_distillers] 10 Hp Boiler

Expand Messages
• Charley Take the 27,720 and / by 70 = 3960 BTU per Horsepower.I think you re absolutely right. I timed one of my industrial motors. A 350 Chevy that runs
Message 1 of 7 , Mar 28, 2002
Charley

Take the 27,720 and  / by 70 =  3960 BTU per Horsepower.I think you're absolutely right.  I timed one of my industrial motors.  A 350 Chevy that runs 24/7 at 2000 rpm.  For a four stroke engine that would be (RPM / 2) x Cu/Inch  /  1728 CUInch Per CuFt x 80% to =  162.04 CuFt per Minute Intake x 2.85 % Natural gas =  4.62 CuFt of natural gas per minute.  Take this times 60 minutes  = 277.2 CuFt per hour x 1000 BTU per CuFt (got this from the gas company) = 27,720 BTU on a motor that is delivering about 70 horsepower.  Take 3960 BTU per Horsepower and minus 2552 and the difference is 1,408 BTU larger than a boiler horsepower.  Which means that my 350 can easily pull my still with it's waste heat.  Which is really all I wanted to know.  I wonder if the difference could be from  the addition load of the running motor.

Thanks for the facts on your boiler.  They helped me find an error in my spreadsheet. Now my spreadsheet agrees with what several different authors said other people could produce ethanol for.

George

cdewen@... wrote:
Well, there's academia, then there's real life....

I own a 10HP steam boiler.   I'm home and it's at the shop, but as I
remember from the rating plate, it requires an input of 450,000 BTU
of propane to produce an output of 360,000 BTU.   It stands 6ft tall
and weighs almost 1,000 lbs.   Seems like a lot of iron just to
produce the same heat as a couple of stove burners.

I have a feeling we're misusing terms.   I'm no engineer, but I
believe there's a difference between gas engine horsepower and
boiler horsepower.

Charley

--- In new_distillers@y..., georgelola@n... wrote:
>
> If I may, another question.  Would a 10 Hp boiler require the same
gas input as a 10 Hp motor, delivering 10 Hp? How much would be lost
by using an internal combustion motor?
>
> George
>
>
>
> "Dr. M. Legendre" <distiller@a...> wrote:
>
> >Thought I'd interject,
> >
> >On Wed, 27 Mar 2002 06:31:11 +1000
> >"Ackland, Tony (CALNZAS)" <Tony.Ackland@c...> wrote:
> >
> >> See http://www.hotflo.com/dccalc/metricconv1.html
> >>
> >> horsepower x 746 = watts
> >> and watts = joules per second
> >> and joules x 0.000951 = BTU
> >>
> >> so ....  10 x 746 x 0.000951 = 7.09 BTU per second
> >
> >Don't forget that conventional expression of BTU is in BTUs per
hour, not
> >per second. So, 7.09 BTU/sec * 3600 sec/hour = 25,524 BTU/hour.
What you
> >need, is a roughly 26,000 BTU heat source.
> >
> >Sounds like a pretty nominal size. For reference, a large kitchen
stove
> >burner is about 15,000 BTU.
> >
> >M Legendre
> >
> --
>
>
>
>
> __________________________________________________________________
Experience the convenience of buying online with Shop@Netscape!
http://shopnow.netscape.com/
>
> Get your own FREE, personal Netscape Mail account today at
http://webmail.netscape.com/

To unsubscribe from this group, send an email to:
new_distillers-unsubscribe@onelist.com