I am fascinated by your design, but I'm not sure that I understand the exact construction (how all parts fit together). For example: That Indoor Dryer Vent kit...Is that the point where the fog enters the ice chamber and then the fog filters down through the ice to the output port?
The fog filters through the in pipe, and then through all the ice, then into the plastic drier lint trap plastic thing "supercharger-carbonator", and then into the out pipe which the white plastic thing is mounted on. other than the fact that i usually concentrate the clc02 in that area, i always give the entire top of the ice the mixture. The only real purpose for the cap over the out pipe is that when using dry ice i put it there, but dry ice has not been necessary lol. The cap is to keep the dry ice protected from the water. just like dry ice foggers, your dry ice only lasts for like 15 minutes, but it'll sublimate over a span of 24 hours if it doesn't meet any water. The next few tests ill be doing will be setting the new lowest temps in both categories. Anyhow, if you just take ice and ice melt, you can get the same effect. Also aluminum is one of the best known thermocouples. don't use pvc! the fact that the pipes are in contact with water thats super chilled, but can't freeze, gains all the advantages over other designs. Think about it this way. Pick up an empty plastic pop bottle, and an empty aluminum can. Note to yourself which one seems to be colder, although they're both exactly the same temp. A full DIY episode is in the making.
im very sorry it has talen so long and i still have yet to get the next video in to edit. life has me maxed out at the moment, and i realize its getting close to halloween. any questions, id be willing to answer and try help you make the perfect fog chiller. the showboat model you see in videos 4-6 cost about 100$ and some junk i had laying around. fire some questions at me.
also there are 6 videos in total you can watch to see what all i could fit into them, and a seventh video i did for Mike Johnson at B2lightingfx.com its just a one minute demo of the fog along with a crazy light show.