[TheForge] Re: TheForge Digest, Vol 57, Issue 18
GRAF
adveniam at att.net
Tue Oct 21 18:26:36 EDT 2008
Furnace water heaters and much of the process equipment runs on 3 to 6
inches of water column pressure.
I think the mains here are about 12 psi.
Mike Graf
Grant Marcoux wrote:
> What is the normal NG delivery pressure for homes vs. commercial
> spaces? I know the size of the delivery pipes varies, but I don't
> know if the pressure does....any body hip on this? Grant
> -----Original Message-----
> *From:* theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net]*On Behalf Of
> *craig.schaefer at verizon.net
> *Sent:* Tuesday, October 21, 2008 9:09 AM
> *To:* theforge at mailman.qth.net
> *Cc:* theforge at mailman.qth.net
> *Subject:* Re: [TheForge] Re: TheForge Digest, Vol 57, Issue 18
>
> The trouble with NG is that the normal residential pressure isn't
> enough to run a venturi burner effectively. Most NG forges are blown
> to take advantage of a big fuel supply under low pressure and adding
> enough air to it.
>
>
> CraigS
> Gresham, OR
>
>
> Oct 21, 2008 02:21:00 PM, theforge at mailman.qth.net wrote:
>
> Would a natural gas forge require added air, i.e. to be blown, to
> compare, heat-wise, with a propane?
> JA
>
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> ------------------------------------------------------------------------
> >
> > Today's Topics:
> >
> > 1. blown vs. Venturi forges (bistline at md.metrocast.net)
> > 2. Re: blown vs. Venturi forges (craig.schaefer at verizon.net)
> > 3. Re: blown vs. Venturi forges (Jerry Frost)
> >
> >
> >
> ------------------------------------------------------------------------
> >
> > Subject:
> > [TheForge] blown vs. Venturi forges
> > From:
> > bistline at md.metrocast.net
> > Date:
> > Wed, 15 Oct 2008 12:23:29 -0400 (EDT)
> > To:
> > theforge at mailman.qth.net
> >
> > To:
> > theforge at mailman.qth.net
> >
> >
> > I currently have a side arm burner forge. I am thinking about
> building a
> > forced air burner. Are the forced air burners more efficent in fuel
> > consumption?
> >
> >
> >
> >
> >
> >
> ------------------------------------------------------------------------
> >
> > Subject:
> > Re: [TheForge] blown vs. Venturi forges
> > From:
> > craig.schaefer at verizon.net
> > Date:
> > Wed, 15 Oct 2008 11:44:23 -0500 (CDT)
> > To:
> > theforge at mailman.qth.net
> >
> > To:
> > theforge at mailman.qth.net
> > CC:
> > theforge at mailman.qth.net
> >
> >
> > Probably not since they are adding air, you need to add fuel as
> > well. They DO get hotter more easily.
> >
> > CraigS
> > Gresham, OR
> >
> >
> > Oct 15, 2008 04:24:18 PM, theforge at mailman.qth.net wrote:
> >
> > I currently have a side arm burner forge. I am thinking about
> > building a
> > forced air burner. Are the forced air burners more efficent in fuel
> > consumption?
> >
> >
> > _______________________________________________
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> ------------------------------------------------------------------------
> >
> > Subject:
> > Re: [TheForge] blown vs. Venturi forges
> > From:
> > "Jerry Frost"
> > Date:
> > Wed, 15 Oct 2008 10:47:15 -0800
> > To:
> > "Blacksmithing List Sponsored by ABANA"
> >
> > To:
> > "Blacksmithing List Sponsored by ABANA"
> >
> >
> > No.
> >
> > Properly tuned a burner is a burner is a burner. The proper
> ratio for
> > a neutral Air:Propane flame is 17.5:1 it doesn't make any
> difference
> > how you put the two together and mix them.
> >
> > A gun (blown) burner is easier to make, tune and are less
> sensitive to
> > back pressure BUT they're more expensive and tie you to electric
> service.
> >
> > Naturally aspirated burners require more precision to make and tune
> > and are more sensitive to back pressure and stray breezes BUT are
> > cheaper to make and work anywhere.
> >
> > In either case you're introducing a specific amount of propane to a
> > specific amount of air and hopefully mixing them thoroughly before
> > they get to the furnace chamber. For any specific amount of propane
> > there are a specific number of BTUs available. Period.
> >
> > Frosty
> > -------------------------------
> > If it ain't forged
> > it ain't real.
> > Wrought iron is.
> > The FrostWorks
> >
> > Meadow Lakes, AK.
> >
> >
> > From:
> >
> >
> >> I currently have a side arm burner forge. I am thinking about
> building a
> >> forced air burner. Are the forced air burners more efficent in fuel
> >> consumption?
> >>
> >>
> >>
> >
> >
> >
> ------------------------------------------------------------------------
> >
> >
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