On 5/31/05, Russell McMahon <rusl@paradise.net.nz> wrote:
> I have a friend trying to implement a 600 mm dia LPG ring burner to
> heat a LARGE casting to assist in dis-assembly of a very large beam
> engine manufactured in the 1800's to pump water for Auckland City.
> 
> If anyone can offer any useful comments on suitable burner fabrication
> it would be appreciated. Details below.
> 
> To: "Russell McMahon" <rusl@paradise.net.nz>
> Sent: Tuesday, May 31, 2005 4:25 PM
> Subject: burner design and implementation
> 
> > Russell,
> >
> > I have been trying to build a quick-and-dirty LPG-powered ring
> > burner for
> > evenly heating a large expansion joint casting on the engine at
> > MOTAT.  I
> > need a ring of flame (directed inwards) about 600mm in diameter.

LPG burner?  Bah, far too pedestrian.  This job calls for induction
heating.  Low freqeuncy for a big coil and deeper pentration... 
Little wasted heat...  So, who has a (ds)PIC-based design for a
water-cooled RF power supply?  I wonder how much power he needs?

Bradley

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