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Discussion Starter · #1 ·
Hi All,

I have experimented with the GotFog design, the Vortex, and the reverse flow Vortex. Here are my results...

GotFog: Great fog output but the fog is too hot.
Vortex: Cold fog but some backflow out of the entrance.
Reverse: Cold fog, more ice capacity, additional flow out of exit.

https://www.youtube.com/watch?v=lLCfxepta-o

http://www.dreamfactory.com/halloween/chiller_top.jpg
http://www.dreamfactory.com/halloween/chiller_full.jpg
http://www.dreamfactory.com/halloween/chiller_design.png

With this design, you don't need much of an expansion chamber at the top. The hot fog spreads out and sinks as it cools. On the bottom, there is not much need for room either. The ice rack is just above the input/output tubes. This makes the cooler just about full of ice. As you can see, the fog is really expelled from the cooler because of the sinking pressure.
 

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Going bump in the night..
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Good design - you'll find this design can be worked into other props pretty easily. This is the style of fog chiller I've built into my alter in my setup. I made my own cooler from 1" expanded polystyrene insulation (16 inches wide by 32 inches long by 26 inches high on the inside - the shelf is at the 4 inch high mark to allow room for the inlet pipe).
The alter itself is hollow, and the bottom edge of it stops a half inch from the ground. The cooler slips into it, and the cooled fog flows out from beneath the bottom edges of the alter. With still air, the effect is perfect.
 

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Wow looks great! Im working on building 2 chillers now. Bought the containers a few days ago and im still undecided on the design.
Most of them I see are the straight through design. I watched your video and with a 400 watt fogger the fog comes out that fast? I was
wondering if you need any kind of fan to help force the fog out. Thanks for the info. Im going to start on mine real soon.
 

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Discussion Starter · #4 ·
Hi Rigormotor,

I was surprised about the velocity of the fog, that is a very standard 400 watt fogger. I think "expansion chambers" are a bad idea -- they cause a loss of pressure. This design is mainly ice. Not much room at top or bottom. The velocity is because of pressure from the fog machine and the falling cold fog moving through the ice. Good luck with your design!
 

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Discussion Starter · #11 ·
i use 400 watt fog machines for everything

the bigger ones can run too hot in my opinion

i like your design, but like mine that ice shelf has most of the complex parts

i'd like to find a simpler ice shelf design, maybe just a tube with holes in it that runs out the bottom

I am done using dry ice -- too expensive. i just want to fill the cooler with ice.

if the bottom shelf was just a perforated drainage pipe that would do it

looks like you are also at 48 quart cooler + 2 inch PVC

has anyone tried 3 or 4 inch PVC?

seems like the 2 inch going up is right -- force the expansion at top, not in the tube

but a bigger exit might work better
 

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Going bump in the night..
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I've used 4" drainage pipe for my inlet, and the outlet is a 2 foot long exit slot along the "front" edge, so I can have the fog spread out as it leaves the chiller.
Then again, the effect I'm looking for is to have the fog ooze out from below my alter prop. Which it does well.

Here's a pic of inside of my chiller (I don't have any others, I'm afraid).
 

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for later............
 

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Going bump in the night..
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Embarrassing as it is to admit, no, I don't.
I have a blank spot in my processes when it comes to taking pictures of things.
 
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