Open Source Ecology Heat Exchange Coil Winding, 3 Feb 2012

Previous Meeting Next Meeting

⏯

youtube image

►

From YouTube: Coil 7

Description

Gckcjcocif

A

Now I'm actually going to make this a little bit longer than the last one and then spit it and then cut it down as we need it. Okay, I'm going to cut this out about a half inch away from.

A

And there you see that that elliptical hole is almost exactly like the other one, and ideally that's what you want. You want the same.

A

The same shape, yep. Okay, now.

A

There you have a nice smooth transition to the next coil. Oh man, that's tight to give the weld under there yeah.

A

That's why it's so time consuming, because what you do is you? Well, you weld the part that you can get to the easiest first yep. Then you can spread these with and hold them apart with blocks of wood and then get down there in with your torch and do the rest of it mm-hmm I'm thinking this is going to be pretty pretty good. We can. We can weld this together like this and by the time we by the time we heat it up and get it next to each other. It'll be it'll, be fine.

A

A

As well is our spacing here now, these are quite quite nicely: spaced, okay, just a little bit of variation in some spots.

A

What we have done in the past.

A

I've put nails down in there big gauge nails and then just it's gone like every every 120 degrees with it to see that it's all spaced exactly the same.

A

And then and then put.

A

Rods in here and tack, welded it with the MIG welder just so that it holds that shape I, don't think we need to do that with these. Probably all we need is just a ride with tack weld here and here.

A

So we're going to take.

A

Take some right here- this is just I- think it's just quarter inch, maybe 516.

B

It's a good little supply of shafts and runs here.

A

A

Just have to put this one over on that table right there. So we've got about about five three quarters: six inches our.

B

Helical coil is easier to weld together.

A

Necessarily any time you bought weld something there's there's a certain amount of difficulty in it. If you you just just, you need to be satisfied that, after you've welded that that is good.

A

You don't want these clothes to lay right on top of each other, so you put these in here, and this is a little a little larger diameter than we normally use. But that's because we use um we're using a liquid fuel to burn at a high rate, you're going to be using a wood fuel at a little bit lower rate of burn, and as long as you get a clean burn, you won't have any problem with these coils car burning up.

A

That's why you have a combustion chamber so that you can burn all your smoke first say the quarter or five sixteenth. The quarter! Ok, no more! Like 16.

B

A

Five sixteenths and that's okay. So what we're going to do is we're just going to take three of these and we're going to tack them here to these coils.

A

Kind of try to clamp this down so that it's.

A

Fairly flat doesn't have to be perfect, but we want a fairly flat surface.

A

These will come back up, which is fine, so we're just gonna we're going to tack it here and here and we're going to let that Center do what it wants to do.

A

Okay, you can look at that with the camera, but you cannot look at it without having high protection on your face.

A

We want to be able to bend and form this. However, we can so we're going to leave this alone and we're just going to put our spacer on these six coils here. Okay, then, you've got six there six here and then you'll have six here.