Page 1 of 6

Re: In The Shed Today

PostPosted: Mon Sep 03, 2012 9:02 pm
by bt1
lol

least wait till I've pressure tested it and given it a clean...

Nah fuck it....

Image019.jpg


bt1

Re: In The Shed Today

PostPosted: Tue Sep 04, 2012 12:26 am
by Goldie
Cut up and flatten some perfectly good copper pipe and made some 4"plates, now a date with the drill press is next.......

The Bt1 bubbler build blog

PostPosted: Wed Sep 05, 2012 9:32 am
by Kimbo
:D

Re: The Bt1 bubbler build blog

PostPosted: Wed Sep 05, 2012 10:28 pm
by emptyglass
If its any re-assurance, I've run mine on a 38c day, with no real still issues, but rocks in my head for thinking I could handle it! Thats with 3 x 3/4 tubes, your 5 half inchers should cope well.
I think an adelade summer will be the real test.

Re: The Bt1 bubbler build blog

PostPosted: Sat Sep 22, 2012 12:18 pm
by bt1
Downcomer design,

thinking is, utilise full plate without a drop area i.e. fully drilled = EG's design, provides visibilty of dropping liquid like a cup would for knowing what's happening , better disperses liquid. Well that's the thinking we'll see how it goes in col when done i guess.

Image000.jpg


Image001.jpg


Image002.jpg


bt1

Re: The Bt1 bubbler build blog

PostPosted: Sat Sep 22, 2012 11:21 pm
by emptyglass
You're onto the idea mate.
Jeez I hope it works. Would make for a kick ass arangement.

At the end of the day, gravity wins. The plates should only fill so much before it pushes down. Unless you are pushing that much vapor up that it can't cope. Good reason to have variable heat input.

I guess you should make the area of the outlet as big or bigger than the area of the tube. And set the next plate downcomer height at the highest level of the outlet.

Re: The Bt1 bubbler build blog

PostPosted: Sat Sep 22, 2012 11:23 pm
by Kimbo
Good idea there mate :handgestures-thumbupleft: , how do you stop the vapour from passing up thru the downcommer?

Re: The Bt1 bubbler build blog

PostPosted: Sun Sep 23, 2012 7:05 am
by bt1
Hello all,

Yeh Kimbo was thinking that the plate foot would by it's angle deflect and the base part of the foot is not drilled ...may need to spot solder one or two holes btw.

bt1

Re: The Bt1 bubbler build blog

PostPosted: Sun Sep 23, 2012 12:26 pm
by Kimbo
Fair enough, my understanding was that you need liquid in the down comer to act as an air lock to stop vapour passing thru and this helps the plates to load up. Otherwise you will have a bit of trouble getting the whole unit to load up and balance :?:

Re: The Bt1 bubbler build blog

PostPosted: Sun Sep 23, 2012 1:26 pm
by bt1
Honesty don't know kimbo...hadn't considered that aspect..EG's design doesn't have cups however...might need to re think it i guess.

bt1

Re: The Bt1 bubbler build blog

PostPosted: Mon Sep 24, 2012 10:23 am
by emptyglass
It should work.
Top plate will fill, liquid will travel down the downcomer, providing a fluid lock and forcing the vapor through the holes, not the downcomer.
Other plates below should fill the same way.

Re: The Bt1 bubbler build blog

PostPosted: Mon Sep 24, 2012 11:24 am
by Kimbo
So how does the fluid stay in the down comer to form a lock? :think: :?

Re: The Bt1 bubbler build blog

PostPosted: Mon Sep 24, 2012 5:33 pm
by bt1
Guys,

now realise i have a problem. There's no mechanism for downcomers to form a fluid lock...

had thought pure vapour spped would force the straightest path i.e. via plate...sounding like that's wrong...vapour will find the path of least resistance that is via the downcomers.

Would appreciate advice as I'll have to retro fix or revamp downcomers to tube and cup...something i was hoping to avoid.

bt1

Re: The Bt1 bubbler build blog

PostPosted: Mon Sep 24, 2012 6:12 pm
by SBB
I know there are a few people out there not using them, personaly Id recommend you do add them.

Re: The Bt1 bubbler build blog

PostPosted: Mon Sep 24, 2012 8:09 pm
by emptyglass
Kimbo wrote:So how does the fluid stay in the down comer to form a lock? :think: :?


The fliuid on the plate below.

So long as the top of the hole is covered, by setting the downcomer height on the next plate, it will form a fluid lock. Vapor is then forced through the holes.

BT1, you might have to shorten the "foot" a little, as you dont want to have to set the downcomers in the next plate too high.

But the main trick is in the J cup on the bottom plate. Without that, it wont work. It provides the fluid lock the rest of the plates need.

If you think of a weir plate design, there is no cups.

Re: The Bt1 bubbler build blog

PostPosted: Tue Sep 25, 2012 7:55 am
by bt1
Cheers guys much appreciated.

I'll work something out here...

bt1

Re: The Bt1 bubbler build blog

PostPosted: Tue Sep 25, 2012 12:17 pm
by googe
Good stuff bt1 :handgestures-thumbupleft: very interesting read!. I like your idea's.

Re: Run out of heat

PostPosted: Tue Sep 25, 2012 9:16 pm
by bt1
Proof is in the eye candy they say...personally i reckon it's over rated...

before the burner
Image003.jpg


After the soft cock 2 ring burner added +trusty Mapp gun

R.A.G but just tourched
Image000.jpg


No more heat issues..my life's quest is complete...it was fairly simple :D
bt1

Re: Run out of heat

PostPosted: Tue Sep 25, 2012 9:20 pm
by Sam.
Looks good mate, cheers for the pics :text-thankyoublue: :banana-linedance:

Re: The Bt1 bubbler build blog

PostPosted: Tue Sep 25, 2012 9:28 pm
by bt1
googe i wish I did...

basically i fucked up with my theory...bad boy bubby...more reading should have been done...my bad...well we live we learn now to fix it up with out being totally pissed off at the compromise required to orginal idea.

A less than pleased, bull at the gate, under researched
bt1