AeroJunkie's High Pressure Air-Assisted Hydro-Atomized Aeroponic System (HPAAHAAS)

Originally Posted by thump easy

Fuck what a newb i feel like an ass man it was all i nevor figured this happend to me in 2010 the fucken meter must have gone bad pm was of buy alot the fucken ppm slash ph meter was broken i went to buy new nutes new fucken fillters for the r.o. water new fucken ultravilet light and still the gunk would film up in a mater of a fucken day so i thought what the fuck right? and i went to adjust the meter it didnt calibrate no more!! i put new bateries fuck me i remember this bad lil portable bitch was a good thing back in the day i needed all my plugs so i got portable and well its so old the wire started riping the hole things been threw a few homes and well i have to berry her in the back yard i will be holding a serimony service later tommorow about noon... I WILL BE SPEEKING ON HER BEHALF.. SHE HAS SEEN SO MANY KIMIES SO MANY AND SHE HELP ALL THE WAY THREW THICK AND THIN SHE BEN WITH US>>> ill probly cry... on another note fuck those bitches in the chambers bounced back like a flash...

wow... Just wow... The meter is in a better place now...

Originally Posted by Trichy Bastard

See the thing about Atomizer is I don't think I can pin him to a single incorrect quote... The guy is a walking source of perfection when it comes to his info... We use spell-check while he uses truth-check
If ever he is cocky with his info, he's earned the right to be confident...

I dont mean to be cocky, i just have an intense dislike for inaccurate information..especially if its coming from an unscrupulous salesman to get you to buy something expensive.
Experience from a wide variety of (weird) hobbies, jobs and interests comes in useful for truth checking, holding an A-class amateur radio licence for example

Originally Posted by Atomizer

I dont mean to be cocky, i just have an intense dislike for inaccurate information..especially if its coming from an unscrupulous salesman to get you to buy something expensive.
Experience from a wide variety of (weird) hobbies, jobs and interests comes in useful for truth checking, holding an A-class amateur radio licence for example

I'm going to probably end up testing one out. I can check EMF fields if you like. It will really boil down to how well shielded the unit is.

Ok, I need thoughts. I have been contemplating the design of this next chamber and I have all the resources to fabricate, I just want to run the idea past you guys. I am thinking rather than using a compressor and condenser I would instead just incorporate a coil within the walls flush against my inner polystyrene sheeting. I was considering using polyurethane foam sheets because they have approximately a 33% greater thermal resistance. However polystyrene is cheaper and more readily available in my area. Ill be lucky to get an R value of 8 with my polystyrene whereas with urethane I can easily get a 12 in 2" walls.

Now my idea for the coil is to use aluminum 1/4 tubing (less than half the price of copper) 100' should be enough for 1 2x4x8 chamber. My thought is to bend my coil as needed and then use a standard hot iron to heat the tubing while pressing it into the side of each wall and floor. By using one length of coil I can avoid any potential leaks. With this system I can more easily utilize a remote chiller to keep the heat out of the room. I can also more easily run multiple chambers on a single chiller.

I want to hear your thoughts and suggestions. I have all sorts of ideas ranging from SS or Aluminum walls interior and exterior walls, to building a mold and pouring the polyurethane. Any improvement that can be made to the design prior to fabrication is a bonus. Keep in mind I don't have an unlimited budget.

Originally Posted by aerojunkie

Ok, I need thoughts. I have been contemplating the design of this next chamber and I have all the resources to fabricate, I just want to run the idea past you guys. I am thinking rather than using a compressor and condenser I would instead just incorporate a coil within the walls flush against my inner polystyrene sheeting. I was considering using polyurethane foam sheets because they have approximately a 33% greater thermal resistance. However polystyrene is cheaper and more readily available in my area. Ill be lucky to get an R value of 8 with my polystyrene whereas with urethane I can easily get a 12 in 2" walls.

Now my idea for the coil is to use aluminum 1/4 tubing (less than half the price of copper) 100' should be enough for 1 2x4x8 chamber. My thought is to bend my coil as needed and then use a standard hot iron to heat the tubing while pressing it into the side of each wall and floor. By using one length of coil I can avoid any potential leaks. With this system I can more easily utilize a remote chiller to keep the heat out of the room. I can also more easily run multiple chambers on a single chiller.

I want to hear your thoughts and suggestions. I have all sorts of ideas ranging from SS or Aluminum walls interior and exterior walls, to building a mold and pouring the polyurethane. Any improvement that can be made to the design prior to fabrication is a bonus. Keep in mind I don't have an unlimited budget.

I've also been trying to deal with chamber heat. So far I've found the best way is in a reasonably insulated chamber that still gets too hot, use a chiller to cool a water bath in an icechest, then run your coils of air/nutes through this bath and to recirculate the bath through the chiller. Then run your pump output lines that lead through the chiller as some simple 1/2" coils of clear tubing around the bottom of your chamber and back to the ice chest, constantly recirculating. The cooling effect will spread around the chamber with the mistings and convection. I have constanlty had a temp probe in my chamber and it has brought the temps down 10-20 degrees over ambient temps and successfully kept my chamber under 70f even in direct sunlight and 90 degree weather. The chamber uses less than 1.5 inches of polyurethane foam, so you should be fine. My only concern is how the roots will react to being ontop of these 50f coils when they touchdown, but I have a silkscreen frame I may insert above them, although I do not know if it will affect the transfer of cold to the area above the silkscreen as the silkscreen becomes almost an air barrier once wetted.

Remember that your aluminum coils may collect condensation, also I am not sure how inert alumninum will be in nute salts and low ph. You could consider adding a thin sheet of foam on top of the coils so basically the inner walls of the chamber fight heat and cool the chamber. Obviously have less foam between the coils and inside of chamber, than the outside foam walls of the chamber- so the cool radiates towards the inside of the chamber, but is buffered by the thin foam inner wall. (Think internally cooled chamber walls).

Originally Posted by Trichy Bastard

Remember that your aluminum coils may collect condensation, also I am not sure how inert alumninum will be in nute salts and low ph. You could consider adding a thin sheet of foam on top of the coils so basically the inner walls of the chamber fight heat and cool the chamber. Obviously have less foam between the coils and inside of chamber, than the outside foam walls of the chamber- so the cool radiates towards the inside of the chamber, but is buffered by the thin foam inner wall. (Think internally cooled chamber walls).

Internally cooled chamber walls is what I am designing. I am going to use a polystyrene SHEET (same as I am using now) to cover the coil and complete the wall structure. The coil would be resting directly against the polystyrene SHEET and insulated by the 2" polystyrene FOAM (I am not yelling just differentiating). It would be a closed loop system and with such a small coil I could inexpensively use glycol at 100% and recirculate fluid well under 32*. I personally dont like the idea of a waterbath (dont ask me why it just rubs me uneasy) and I dont want an exposed coil in the chamber needing to be cleaned each cycle. The aluminum will be perfect for propylene glycol in a closed loop system and I dont think condensation will be too much of an issue as long as I seal the coil within the walls. Im not 100% on the condensation issue. ssentially this is the same design as a chest freezer with polystyrene rather than polyurethane and a chiller rather than freon.

Originally Posted by Trichy Bastard

I've also been trying to deal with chamber heat.

Are you guys using these systems outside? The temperature of your chamber really shouldn't get any hotter than the ambient temp of your grow room. Maybe cooling the grow room would be an easier fix? I'm not really sure how you guys are set up.

Originally Posted by indrhrvest

Are you guys using these systems outside? The temperature of your chamber really shouldn't get any hotter than the ambient temp of your grow room. Maybe cooling the grow room would be an easier fix? I'm not really sure how you guys are set up.

I live in a very hot area of the country. I only grow in the winter, my ambient temp never exceeds 85* in my enclosed sealed room. My roots can not survive in that environment. Chamber temps need to be below 70* min imo.