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Fog Chiller Test. Ice/Dry Ice. Results Inside.

12K views 32 replies 17 participants last post by  Terra  
#1 ·
OK. In the interests of science. (and because I was able to talk my wife into it tonight while we were out at dinner.) I stopped and grabbed some regular ice and some dry ice for testing in my chiller.

I have shot and I'm uploading 6 videos to YouTube tonight that will hopefully let you see exactly what I'm talking about here.

We did the following tests.

  • Dry Ice in Chiller, 90 second Burst. 50% output. Bag on output tube.
  • Regular Ice in chiller, 90 second burst. 50% output. Bag on output tube.
  • Mix of Both Regular & Dry Ice, 90 second burst. 50% output. Bag on output tube.
  • Mix of Both Regular & Dry Ice, 90 second burst. 50% output. NO Bag on output tube.

I tried to shoot views that would let you see how far the fog went as well as how the fog moved.

I used 20 pounds of regular ice. And I was only able to get 5.48 pounds of Dry Ice. (That's ALL the store had on hand.) Regular Ice: $2.49 for 20 Pounds. Dry Ice: $5.43 for 5.48 pounds. (2 blocks)

All testing was done inside my garage again. The VEI V-3000 fogger was used for testing, and Froggy's Fog Swamp Juice was the fluid used. The fogger was set up shooting into an open space in the garage. The Output pipe on the chiller was 28' away from the tire of my ambulance. (the white line on the floor is a tape measure.) The fogger was locked on for 90 seconds at 50% output volume.

My observations are as follows:

1. The Dry ice seemed to produce a slightly denser fog. HOWEVER, the fog did not travel as far, and did not cover as large an area. Also, fog is still affected by wind and movement, so I'm not really seeing a major benefit to using ALL dry ice. The extra expense really doesn't seem to be justified for MY conditions and needs. I'd rather have MORE fog than less.

2. Regular ice projected more twice as far as the dry ice did, and the fog lingered and crawled along the ground in a very creepy manner. Outside, I've seen results consistent with this test.

3. A mix of regular and dry ice seemed to produce an excellent result. Slightly denser than regular ice alone, yet without a noticeable reduction in fog volume like we saw with the dry ice. Good creep and crawl, nice hang time. Overall a really nice effect. I have a party on Saturday night that I'm planning on taking the fogger to, and I'm thinking about using a mix of regular and dry ice to see how the mix handles several hours of fogging.

4. In my opinion, the garbage bag is not optional when you use a chiller. Without the bag, the fog moves too quickly, rises too soon, and doesn't linger and creep properly. Without the bag, we had to lift up the camera as the fog was getting deep enough it was obscuring the view.


Some side notes. Fogging at 50% output for 90 seconds with a VEI V-3000 fogger creates ALOT of fog, regardless of how its chilled. It would take 90 seconds to create the fog, and then 15 minutes with a large commercial fan and the garage door open to clear the space out enough we could test again. I'm fairly certain that the neighbors think we were burning things down.

Froggy's Swamp Juice is EXCELLENT fog fluid. Regardless of your intended use, its well worth the effort to get. It lasts longer, looks better, and it easier on your machine than the cheap fluid. What you spend on Froggy's Fog, you will more than save in headaches, hassle and not needing to run your machines as much. I'm STILL using the gallon that I put into the V3000 when I got it. And I've used the machine at a professional haunt 2 nights, and tested it here at the house twice for an hour the first time, and 2 hours tonight. (We filled up the garage with fog once testing was done for some photography.)

Some folks seem to think that you need a giant chiller for a fogger 1000W and larger. I'm using a 60Q "Ice Cube" reverse vortex style chiller and I have not been able to overwhelm the chiller yet. Even with regular Ice. The trash bag is the key. It keeps the fog in the lower "cold" chamber long enough to make it nice and dense and even more importantly, it slows the fog down. Slow fog is happy fog.

Any questions, please ask. :)

Happy Haunting!

CountZ
 
#4 ·
To be honest, I'm not sure. :rolleyes: If you look on the VEI website, it says 1600W. The Box says 1300W, the paperwork says 1000W. What I can tell you is that it produces more fog than the Chauvet Hurricane 1700 that I had. (Which was supposed to be a 1300W machine.) I believe its a 1600W machine.

It DOES create a HUGE amount of fog though. At 50% output, I've had it running continuously, and it creates a huge amount of fog. (1 minute and 38 seconds at 50% output with no chiller and I completely lost 2 entire cars in the fog. Just gone.)
 
#5 ·
Thanks for doing the videos. I think I agree about slowing the fog down. I did a test sending the fog into a flexible drain pipe and it was very effective. I think though that the drain pipe did the same thing that the trash bag does. It slows the fog down so that when it exits, it doesn't mix with the open air so rapidly. That keeps it cool longer and keeps it closer to the ground.
 
#8 ·
Wow thanx for the testing vids, nice to know the bag helps ! I have both swamp & freezing fog juice from froggys, curious now if the freezin fog would lay like the swamp or if the swamp is better thru the chiller.........
 
#11 ·
Explain the bag to me....


I don't use a seperate chiller, I have 2 ground foggers that have the compartment for ice (stupid me didn't even know that's what they were until I found this site- for the last 2 yrs I just ran them regular). I bought dry ice today and will probably be mixing it with the regular ice based off what you posted but I am still confused about the bag???
 
#12 ·
The bag serves 2 purposes.

1. It holds the fog in the super cold, empty bottom of the chiller longer then normal as the fog needs to overcome the force of the bag itself to escape through the tube and get out. That extra time in the lower compartment seems to increase the density of the fog so it doesn't rise as high off the ground and it clings to the ground and stays low longer. It creeps across the ground and seems more organic than without the bag. Without the bag the fog shoots out.

2. The bag also spreads the fog out into a very thin, very wide carpet of fog. Which also serves to slow it down as well as dispersing it a lot wider than without the bag. You get a naturally low wide carpet of fog rather than a cone of fog shooting out of the chiller.

If you look at the LAST 2 videos, you can easily see the difference in how the fog looks with and without the bag. Without the bag, you get a cone of fog that comes out of the tube and gets wider and higher off the ground the further it gets from the cooler. (you can also see that the fog is moving alot faster out of the cooler without the bag on there.) In the last 2 videos, the ONLY difference is the bag on the outlet in one video and without the bag in the second video. Everything else is the same.

Does that make more sense?

CountZ
 
#13 ·
The bag serves 2 purposes.


2. The bag also spreads the fog out into a very thin, very wide carpet of fog. Which also serves to slow it down as well as dispersing it a lot wider than without the bag. You get a naturally low wide carpet of fog rather than a cone of fog shooting out of the chiller.


Does that make more sense?

CountZ
My foggers don't have tubes- they have a wide slot that the fog comes out of.

Is this just a regular trash bag with the end cut open? I'm assuming I can attach the bag to the fogger somehow and get a great effect.

Have you ever put ice or frozen bottles in the bag itself to help? ( just thinking out loud:)

Thanks....
 
#17 ·
I still wanna try this bag method. Last night I used the perforated storm drain pipe (without any ice) and the test proved that tempering the outlet of the fog and "restricting" it a bit helped noticably. I'll do another test tonight with a bag of ice in my chiller, and then do the pipe vs. bag comparison.

I like the pipe, because I can lay it lengthwise down the flower bed and it will widen the dispersion. I think I might even try laying bags over the pipe as well!
 
#25 ·
I have to respectfully disagree. Dry ice and only dry ice is the only way to go based on personal experience. And I've not seen the fog travel less distance using dry ice. I've only seen far more lift with regular ice and not nearly enough ground cover.

Especially outside where the elements will effect the fog, the colder the better and that means dry ice.

The trash can I would argue is the best chiller because the fog travels far longer in the coil and exposed to more cold temperatures keeping the fog at its coldest temp.

 
#27 ·
I use a zip tie or a wire tie to hold the bag on the output hose. Simple, easy and effective.

I have to respectfully disagree. Dry ice and only dry ice is the only way to go based on personal experience. And I've not seen the fog travel less distance using dry ice. I've only seen far more lift with regular ice and not nearly enough ground cover.

Especially outside where the elements will effect the fog, the colder the better and that means dry ice.

The trash can I would argue is the best chiller because the fog travels far longer in the coil and exposed to more cold temperatures keeping the fog at its coldest temp.

YouTube - Dual Fog Chillers in Action!
I'm not sure there is a "perfect" answer that will work for everyone in terms of chillers. All I can do is share my experience and provide as much information as possible so folks can use that info as they wish. I posted the videos so everyone could SEE My results. I'm not asking anyone to take my word for it. I'm trying to show what I saw when I tested. If a trash can chiller works for you, and you prefer Dry Ice, then great. :) That particular setup is not really the best option for me as dry ice is hard to get and expensive locally, and I seem to be able to get better results with my cube chiller design and regular ice. Whatever works! Is either setup the absolute "best" option? I'm not willing to label ANYTHING as the "best". There are too many variables involved.

That being said, I did build a trash can chiller in 2006 when I built this cube chiller and I ended up with far better results with the cube chiller.

http://liquidrealities.com/images/fog/bagfogger.jpg

I probably still have the trash can chiller on a shelf somewhere. But, It just didn't work for me when I tried it the last time. The ribbed dryer vent tube ended up creating a lot of turbulence with the fog which gave me inconsistent results, and I was not able to get the fog chilled as well as I could with the smaller square cooler. The trash can itself isn't insulated either, so there is some thermal loss as you are radiating cold from the can itself, and it generally didn't seem as efficient as the cooler design. I tested both designs side by side and got consistently better results with the square cooler. (And by "better", I mean: Lower, slower, longer lasting, better looking fog.)

Do you have any controlled tests between a square cooler and a trash can chiller? I dont have time between now and Halloween to try to find my trash can chiller and test myself, but I suppose if I have to, I can try to do some more testing after Halloween. I tested my cube chiller with 3 different fog machines outside in my back yard a few weeks back, and I was able to get a temperature reading of 55 degrees on the fog coming out of the chiller every time I tested it regardless of what machine I was using. (That was with a 1000W, a 1300W and a 1600W fogger. Fog nozzle temps going IN to the cooler were roughly 105, 115, and 130 degrees for the respective foggers.) Using my largest fogger, I was able to get a 75 degree drop in fog temperature in the time it was in the cooler. Could you take some temperature measurements of the fog exiting your fogger and then exiting the cooler so we can see the actual temperature difference you are getting with the trash can chiller design? I think it would be fantastic to be able to create a chart with actual data for each of these designs. Maybe we should develop a standardized test so all of our data is similar. Then folks could look up the best option for their individual needs. (Budget, location, availability of ice/Dry Ice, etc.)

That being said, when I tested with Dry Ice and regular ice the other night, the results are pretty easy to see in the videos I posted online. The Dry Ice fog IS denser and stays lower to the ground, but it doesn't extend out as far from the chiller. The regular ice fog reaches all the way to the wheels of the cars in the background, the dry ice chilled fog does not even get close to the cars. I filmed from 2 different angles with each Ice, and the results were consistent each time. The dry ice chilled fog only goes about half the distance of the regular ice fog. And when you factor in the difficulty in finding dry ice for me locally, as well as the increased expense, Dry Ice becomes less attractive for MY needs. I was only able to get 5 pounds of Dry ice to test with, and it cost me more than double what 20 pounds of regular ice cost me. And now the closest dry ice supplier is out of stock. The next closest supplier is a 35 mile round trip for me, and when you figure in the time and the gas required to get there and back, that makes the dry ice even more expensive. Especially if I have to fill a cooler with it.

How much dry ice do you use in your chiller and what does it usually cost you each night you use it? I know that my trash can chiller used A LOT of ice when I was testing it with regular ice. I can see filling it with Dry Ice being a pretty expensive proposition. I can get 40 pounds of regular ice for $5. ($2.49 a bag for 20 pound bags.) 40 Pounds of Dry ice will cost me $40, PLUS travel time and gas as I have to go all the way across town to get any decent quantity.)

Now I will grant you that I was testing inside and those are more perfect conditions then we will see outside next week. However, I tested inside as that allowed me to insure there was no wind from test to test, and it provided me with a controlled environment so I COULD test things equally. I'm not sure that a test outdoors is going to be accurate as there are too many variables. Is the wind the same speed and coming from the same direction each time to test. Is the temperature the same each time you test. Etc. Inside the garage, I could control the air movement and the temperature so that each test could be as similar as possible to the previous one. Which I felt gave me more accurate results.

CountZ
 
#30 ·
After exhaustive research, I decided to spring for the V-3000 fogger (go big or go home, right? :p). Based on the Count's research, I think it's probably the best for me. I do a yard haunt, and the yard has a slight slope from the house to the street. I also ordered froggy's freezin' juice, and I'm going to use a dry ice chiller dispersed through a 4" PVC pipe with holes.

I think (based on the Count's test videos) that the denser, more ground-hugging fog works better for me, and the slight yard slope will cause it to travel further without dissipating as fast as it would if I only used ice.

Now I'm crossing my fingers hoping for no wind on Halloween day. :confused:
 
#32 ·
I did a haunt for an elementary school Fri & used Froggy's feezin fog & the plastic bag,...... BIG dif !! Was inside a room with a graveyard scene & it stayed nice & low the whole time with minimal fog rising which worked out great without having to fan the room or stop the fogger, used a 1200 & then switched to (should I say filnalluy found my misplaced ) 3000 fogger- WoW. Went back to the 1200 for inside, but outside the 3000 was better. Thanx the bag trick made a HUGE dif this year !!!!!
 
#33 ·
Wow! Is this some great research. I'll also do the trash bag...what a difference.

I had a great conversation with Wil from Vortex Chillers when I was getting his Fog Curtain. There's a lot of science that goes into chilling fog and I could easily say he's a fog nerd. He wanted to get the word out to all of us about a huge GOTCHA! to avoid.

Do NOT create TURBULENCE!

Using corrugated tubing is the biggest culprit. Those ripples in the pipe destroys the fog just like a fan would do. Avoid tight turns in your piping as well.