RE: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Robert Leguillon
Android. Has anyone been able to find the manifold that Rossi had used? > Date: Sat, 10 Dec 2011 11:44:25 +1030 > From: aussieguy.e...@gmail.com > To: vortex-l@eskimo.com > Subject: Re: [Vo]:Two separate issues: air pocket; and conduction vrs > convection > > The mode

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Terry Blanton
On Fri, Dec 9, 2011 at 8:28 PM, Terry Blanton wrote: > You can plot the curve on graph paper > and, using curve fitting, determine when the temperature falls by, > say, 95%. Lookie, there's even a wiki on curve fitting! Note that three data points give you quite good accuracy: http://en.wikiped

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Terry Blanton
> Bloody hell, there's even a freakin' wiki on it: > > http://en.wikipedia.org/wiki/Asymptotic_analysis Of course, you can do all this graphically. Start with a source, say a candle, whose heat is fairly constant, and heat a piece of copper tubing with a known flow rate of water. Measure the wa

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Terry Blanton
On Fri, Dec 9, 2011 at 8:15 PM, Terry Blanton wrote: > All pro bono, of course. Bloody hell, there's even a freakin' wiki on it: http://en.wikipedia.org/wiki/Asymptotic_analysis T

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Terry Blanton
On Fri, Dec 9, 2011 at 8:13 PM, Terry Blanton wrote: > On Fri, Dec 9, 2011 at 7:43 PM, Jed Rothwell wrote > >> How far from the edge >> of the grill would the outside of the pipe be the same temperature as the >> water? > > This is what we refer to as an asymptotic relationship.  The real > quest

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Aussie Guy E-Cat
The model and manufacturer of the 6 Oct heat exchanger has been revealed: SWEP E8T-SC-S http://www.swep.net/index.php?tpl=productsheets&lang=en&id=361&Type=E&Size=8T&Material=SC&Pressure=S in Mats Lewan's report: http://www.nyteknik.se/incoming/article3284962.ece/BINARY/Test+of+E-cat+October+6+

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Terry Blanton
On Fri, Dec 9, 2011 at 7:43 PM, Jed Rothwell wrote > How far from the edge > of the grill would the outside of the pipe be the same temperature as the > water? This is what we refer to as an asymptotic relationship. The real question is how far from the source does the temperature difference be

RE: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Robert Leguillon
welded back-to-back, or some reasonable equivalent. Date: Fri, 9 Dec 2011 19:43:08 -0500 Subject: Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection From: jedrothw...@gmail.com To: vortex-l@eskimo.com Terry Blanton wrote: > I could maybe use a gas grill. I'll thi

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Jed Rothwell
Terry Blanton wrote: > > > I could maybe use a gas grill. I'll think about it. Maybe Terry can come > > over and help. Hint, hint. > > A candle or a Bunsen burner? Sure, I just need some notice. > I was thinking more along the lines of plumbing and common sense, which I lack. I just fired up t

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Terry Blanton
On Fri, Dec 9, 2011 at 5:27 PM, Jed Rothwell wrote: > David Roberson wrote: > >> I guess I did not know that you were kidding about the torch.  It did seem >> a little extreme . . . > > > I could maybe use a gas grill. I'll think about it. Maybe Terry can come > over and help. Hint, hint. A cand

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Jed Rothwell
David Roberson wrote: I guess I did not know that you were kidding about the torch. It did seem > a little extreme . . . > I could maybe use a gas grill. I'll think about it. Maybe Terry can come over and help. Hint, hint. > , but if the test TC is moved along the pipe and a reasonable quant

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread David Roberson
case. He could have made it solid so easily and he is not an idiot as has been pointed out many times. Dave -Original Message- From: Jed Rothwell To: vortex-l Sent: Fri, Dec 9, 2011 4:25 pm Subject: Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection David

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Jed Rothwell
David Roberson wrote: I suspect that it is not easy to simulate the actual heat exchanger and > environment of the Rossi test. A true test would require an exact copy of > the one he used, but that is not going to be possible. > I think a true test is one that addresses the specific physical qu

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Jed Rothwell
I wrote: > One could almost as easily test the conduction problem without involving > air pockets, and without a manifold or what-have-you. Just use a copper > pipe, water flowing through it, and a blowtorch. Or maybe just an electric > heater or a gas grill. > As I mentioned in the other thread

Re: [Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread David Roberson
thick metal. Dave -Original Message- From: Jed Rothwell To: vortex-l Sent: Fri, Dec 9, 2011 3:22 pm Subject: [Vo]:Two separate issues: air pocket; and conduction vrs convection It seems to me that Horace Heffner is talking about two separate issues here. They may both be happening

[Vo]:Two separate issues: air pocket; and conduction vrs convection

2011-12-09 Thread Jed Rothwell
It seems to me that Horace Heffner is talking about two separate issues here. They may both be happening. Or perhaps only one, or neither. It is better to test them separately. I do not see how a heat exchanger is needed to test either one. Horace wrote: "The problem is simulating the nature of