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#220269 - 03/26/11 03:39 AM Re: Some testing of heat exchanger pot (eta power) [Re: jzmtl]
Hikin_Jim Offline
Sheriff
Pooh-Bah

Registered: 10/12/07
Posts: 1804
Loc: Southern California
Yeah, I wouldn't cover the fins, I'd extend the windscreen a bit.

HJ
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#220270 - 03/26/11 03:45 AM Re: Some testing of heat exchanger pot (eta power) [Re: jzmtl]
jzmtl Offline
Addict

Registered: 03/18/10
Posts: 530
Loc: Montreal Canada
Wrong choice of words, I didn't actually cover the fins. What I did was wrap heavy duty aluminum foil around the pot to form a skirt, which connects with the windscreen and block any wind from cooling the fins.

Needs more tweaking I guess.

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#220278 - 03/26/11 01:31 PM Re: Some testing of heat exchanger pot (eta power) [Re: jzmtl]
Hikin_Jim Offline
Sheriff
Pooh-Bah

Registered: 10/12/07
Posts: 1804
Loc: Southern California
Photo?
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#220284 - 03/26/11 05:02 PM Re: Some testing of heat exchanger pot (eta power) [Re: jzmtl]
jzmtl Offline
Addict

Registered: 03/18/10
Posts: 530
Loc: Montreal Canada
The original had a full skirt, I cut it down a bit last night while testing.



I cannot just extend the windscreen, because while it's larger diameter than the heat exchanger, it's actually smaller than the pot itself, so extension wouldn't go over the pot.

I think the original design of the windscreen is only to protect the flame anyway, which it does pretty well. It's not the screen off eta express, it's similar but intended as a stand alone product.

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#220290 - 03/26/11 07:00 PM Re: Some testing of heat exchanger pot (eta power) [Re: jzmtl]
Hikin_Jim Offline
Sheriff
Pooh-Bah

Registered: 10/12/07
Posts: 1804
Loc: Southern California
Well, give it a try, but if the heat exchanger is exposed to the wind, it can actually remove heat from the pot.

Have you tried attaching the extension to the windscreen and not the pot?

HJ
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#220294 - 03/26/11 07:33 PM Re: Some testing of heat exchanger pot (eta power) [Re: jzmtl]
jzmtl Offline
Addict

Registered: 03/18/10
Posts: 530
Loc: Montreal Canada
The windscreen is too narrow (it needs to fit inside the pot).

What I think I'll do with this setup is, I'll leave the skirt up when there's no wind (it's sort of attached to pot and can slide up and down easily), but if wind is strong enough to cause a problem I'll lower the skirt, and live with the air flow interference since it's the lesser of the two evils there.


Edited by jzmtl (03/26/11 07:34 PM)

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#220311 - 03/27/11 10:13 AM YOUR SKIRT IS TOO TIGHT!!!! [Re: jzmtl]
EMPnotImplyNuclear Offline
Enthusiast

Registered: 09/10/08
Posts: 382
The distance from skirt to pot, the gap, should be 10mm, otherwise it might choke your fire smile
Pot Skirt Investigation, ETHOS 2010

Code:
       |                   |S|
       |SCREW>>>>>>>NUT>NUT|K|NUT>>>>>
    P  |                   |I|
    O  |                   |R|
    T  |                   |T|
       |     -10mm-        | |
_______/                   | ||
\/\/\/\|                   | ||
/\/\/\/|                      |
                              |
                              |

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#220317 - 03/27/11 02:01 PM Re: YOUR SKIRT IS TOO TIGHT!!!! [Re: EMPnotImplyNuclear]
Hikin_Jim Offline
Sheriff
Pooh-Bah

Registered: 10/12/07
Posts: 1804
Loc: Southern California
Originally Posted By: EMPnotImplyNuclear
The distance from skirt to pot, the gap, should be 10mm, otherwise it might choke your fire smile
Pot Skirt Investigation, ETHOS 2010

Code:
       |                   |S|
       |SCREW>>>>>>>NUT>NUT|K|NUT>>>>>
    P  |                   |I|
    O  |                   |R|
    T  |                   |T|
       |     -10mm-        | |
_______/                   | ||
\/\/\/\|                   | ||
/\/\/\/|                      |
                              |
                              |
Nice diagram! And I would agree. There needs to be separation from the pot and the skirt or windscreen or it won't work right.

HJ
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Adventures In Stoving

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#220350 - 03/28/11 12:36 AM Re: YOUR SKIRT IS TOO TIGHT!!!! [Re: jzmtl]
jzmtl Offline
Addict

Registered: 03/18/10
Posts: 530
Loc: Montreal Canada
Yeah that's the problem, I need everything to fit inside the pot, so to make something that much bigger than pot is a bit beyond my available material and tools. And I don't like to use anything that folds repeatedly since the folds eventually break without warning.

Going to take a bit of brainstorming to see what I can come up with.


Edited by jzmtl (03/28/11 12:38 AM)

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#220352 - 03/28/11 12:43 AM Re: YOUR SKIRT IS TOO TIGHT!!!! [Re: jzmtl]
Art_in_FL Offline
Pooh-Bah

Registered: 09/01/07
Posts: 2432
Don't be tellin' me how to wear my skirts.

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