Cooling help! Its getting HOT!

[coldwater]

Whats up weed world?

Well here is what is going on. I just got this new 400w HPS with a euro style cool tube. I have it all hooked up with my 6" duct and Stanley blower moving the air fully at speed 3 straight through the light and out the back of the box. The temp is crazy high, around 77-90!




I have my carbon filter exhausting the air separately with a Radio shack 115vac 60Hz 10w cooling fan. Its hard to see but its up in the corner behind the light. Its large; 6"diameter and about a foot long. I know its very tight in the corner but thats the best place I could think to put it.



I cut a small hole in the duct from the light to cool the room (see in pic). This helped lower the temp by only about 3 degrees.



What can I do? What do I do?

 

[Haps]

How does cool air get in?

 

[FreezerBoy]

By opening the lamp duct in the cab, you've largely eliminated the scrubber. Air will follow the path of least resistance. By placing the opening down low, you're sucking out the cold, unscrubbed air and leaving the hot air in the cab.

If you want the lamp to have it's own dedicated exhaust, it has to be sealed. The line must contain no openings inside the cab.

You've mentioned your 6" exhaust. Do you have two 6" intakes to feed it? If not, you're choking the cab. You can only exhaust what you bring in.

Stanley Blowers have been grossly over-rated as to airflow with the actual rating being closer to 250 CFM. That may not be enough for your situation. Try this fan-intake calculator

 

[coldwater]

FreezerBoy

At first I had the duct work all closed off but it was getting to hot in there. So i cut a hole in it to add in some fresh air into the cab. [The airflow is from the left to the right from the ducting, exhaust on the left] That worked by dropping the temp to about a consent of 83.

My light and scrubber have separate exhaust tubes. On the left is the 4" scrubber and on the right is the 6" light exhaust.


My intake is one 6" tube sucking in cool air. From the outside.

 

[FreezerBoy]

I'm having a hard time understanding your descriptions. If the lamp is on a dedicated vent, then it has no holes inside the cab. If there are holes in the line inside the cab there is NO dedicated line AND you're bypassing the scrubber.

My intake is one 6" tube sucking in cool air. From the outside.

Bingo! You're choking the cab! You're locking cool air out of the box. Double the intake.

Me, I'd cut two 6" passive intakes, remove your current scrubber setup and plug it's exhaust port, attach the scrubber to the lamps intake and draw all the air through both scrubber and lamp.

You've no way to allow air in and too many bizarre ways to let it out.

 

[coldwater]

Me, I'd cut two 6" passive intakes, remove your current scrubber setup and plug it's exhaust port, attach the scrubber to the lamps intake and draw all the air through both scrubber and lamp.

Ok so let me understand. What you say I should do is take my scrubber and attach it to the light. That will allow the air in the cab to exhaust through the scrubber and through the light? Dont push air into the light, pull air out? And have a separate intake?

Am I making this way to hard?

 

[FreezerBoy]

Am I making this way to hard?

Nah. We were all noobs once. Anyway, now that uploads seem to be working again ...

I've left out the fans as there are too many places they could go. Better to pull than to push but, pushing works. Filter and/or fan can go outside the cab if preferred.



It sounds like the example at left is what you're trying for. Many do exactly that. One fan is for lamp cooling only. The other cools and vents the cab.

The example at right puts lamp and cab cooling to a single fan.

Either will work but, if you go with the dual system, the lamp line cannot draw air from inside the cab. Any air drawn from within the cab, bypasses the filter.

NOTE both examples use twin 6" passive intakes. This is the key. Unless the intake is double the exhaust, all you've built is an Easy-Bake Oven.

 

[coldwater]

Oh man FreezerBoy your freaking amazing. Thank you so much for drawling that out! I am a very visual person and that is great. Now all I need to do is decide what I can do with what I have.

Im going to have to redo alot of shit and rethink the design a little or alot...
Good thing I have a nice long break coming up!

 

[FreezerBoy]

I am a very visual person

Me, too. All those silly words were just confusing us. LOL.

Enjoy your break and break a leg.

 

[coldwater]

Haha,
will do!