[TheForge] Re: TheForge Digest, Vol 57, Issue 18

Tue Oct 21 15:07:32 EDT 2008

    Normal residential pressure is 4 oz. Commercial pressure can be what
ever you want. I have 12 lb pressure in the shop. I hope to some day have a
naturally aspirated natural gas forge and maybe a gos oxygen torch set-up.

Bob Willman
Bowling Green, Ohio
The Eagle's Anvil
WB8NQW

  _____  

From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Grant Marcoux
Sent: Tuesday, October 21, 2008 1:31 PM
To: Blacksmithing List Sponsored by ABANA
Subject: RE: [TheForge] Re: TheForge Digest, Vol 57, Issue 18

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

theforge-request at mailman.qth.net wrote:
> Send TheForge mailing list submissions to
> theforge at mailman.qth.net
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://mailman.qth.net/mailman/listinfo/theforge
> or, via email, send a message with subject or body 'help' to
> theforge-request at mailman.qth.net
>
> You can reach the person managing the list at
> theforge-owner at mailman.qth.net
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of TheForge digest..."
> 
> ------------------------------------------------------------------------
>
> 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?
>
>
> _______________________________________________
> Manage membership or unsubscribe at:
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login: blacksmithblacksmith at hotmail.com
> password: anvil
> ___________
>
>
>
> ------------------------------------------------------------------------
>
> 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?
>>
>>
>>
>
>
> ------------------------------------------------------------------------
>
>
_______________________________________________http://mailman.qth.net/mailma
n/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
>
>
> 
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG - http://www.avg.com 
> Version: 8.0.173 / Virus Database: 270.8.2/1735 - Release Date: 10/20/2008
2:52 PM
>
> 
_______________________________________________
Manage membership or unsubscribe at:
http://mailman.qth.net/mailman/listinfo/theforge
theforge mail list group photo site is
http://www.photoaccess.com
Login: blacksmithblacksmith at hotmail.com
password: anvil
___________

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.qth.net/pipermail/theforge/attachments/20081021/7c45ee7e/attachment-0001.htm