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Post by azwood on Mar 19, 2018 22:35:05 GMT -5
Hi LOL , yep , its a "favoured ??" spot by a lotta home builders , its one of those bad practices that keeps getting repeated because so many guys have done it previously, YouTube is full of them . Unfortunately those YouTube vids don't have performance stats , I lost count of the number of guys who contacted the Yahoo DIY Gas Turbines Group over the years with combustion problems because of that placement. High speed air hitting one side of the flametube forces more air through the holes adjacent to the entry tube , effectively blowing the flame to one side :-( Here a pic of where the delivery tube is positioned for the flametube on the GT6041 jetandturbineowners.proboards.com/attachment/download/216 and how you end up with a nice plenum for the air to dump into jetandturbineowners.proboards.com/attachment/download/217 ...............you can see the fuel distribution manifold inside the "round house" on top of the FT Cheers John So just follow this and it will be fine.great  |
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Post by stoffe64 on Mar 20, 2018 0:40:17 GMT -5
Yes, follow that and you will be home!
Cheers Stephan
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Post by racket on Mar 20, 2018 3:01:31 GMT -5
Yep :-)
Another advantage with having the feed in at the "bottom" is that half of the air is soon fed into the Tertiary holes which then reduces the air speeds going to the Secondary and Primary holes , this mightn't be great for external cooling of the wall but that can be controlled with correct wall cooling holes for internal cooling , but the reduced velocity of the air allows time for better feeding of the Primary holes which should aid combustion ...................when all the air goes in at the Primary end theres large differences in flows around the flametube at that crucial position
Cheers
John
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Post by azwood on Mar 20, 2018 4:19:01 GMT -5
Yep :-) Another advantage with having the feed in at the "bottom" is that half of the air is soon fed into the Tertiary holes which then reduces the air speeds going to the Secondary and Primary holes , this mightn't be great for external cooling of the wall but that can be controlled with correct wall cooling holes for internal cooling , but the reduced velocity of the air allows time for better feeding of the Primary holes which should aid combustion ...................when all the air goes in at the Primary end theres large differences in flows around the flametube at that crucial position Cheers John Been rearranging the charge pipe this is about as low as I can get it  |
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Post by azwood on Mar 20, 2018 4:24:58 GMT -5
Front on  |
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Post by smithy1 on Mar 20, 2018 19:18:22 GMT -5
Much more betterer..!
Be sure to allow for a "Flexible" coupling between the comp outlet and outer combustion can....she will flex a bit when running...
Smithy.
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Post by pitciblackscotland on Mar 20, 2018 19:32:11 GMT -5
Yeah that's more like it  |
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Post by azwood on Mar 20, 2018 19:42:32 GMT -5
Yeah that's more like it That is mate I'll place it there then |
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Post by azwood on Mar 21, 2018 16:21:14 GMT -5
Anyone know where I can get a oscillating circuit from for my ignition
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Post by turboron on Mar 21, 2018 16:32:34 GMT -5
Bosch relay setup on youtube works great.
Thanks, Ron
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Post by pitciblackscotland on Mar 21, 2018 16:44:13 GMT -5
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Post by racket on Mar 21, 2018 18:01:20 GMT -5
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Post by azwood on Mar 22, 2018 16:53:17 GMT -5
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Post by racket on Mar 22, 2018 17:25:55 GMT -5
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Post by azwood on Mar 22, 2018 18:07:26 GMT -5
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