Help Room To Hot

[90Dank209]

Ceiling height is 7ft

 

[jumpincactus]

OPk so 10 x 15 x 7 = 1150 CF total

When sizing ventilation/exhaust here is some info to help. As always when factoring anything for your grow always go bigger than the minimums. Your plants will thank you for it. Along with the pasted article when sizing you always want to add 10% for each bend in your ducting and always add 10-15 % for each non cooled light. You have 2 and they are DE's with no cooled hoods. Add 5% for each bend in your ducting and add 20% for your carbon scrubber/filter.

Remember to place your exhaust filter intake as high as possible in the room and you can use the bottom of your groom door for passive air intake. Hopefully the home has AC and you will be pulling cooled air in from your passive intake. Or the active fan you have already setup.



Ventilating your growing area

Correctly ventilating your growing area is a vital part of greenhouse/grow room design. Adequate ventilation in the grow room is important for a number of reasons – temperature, humidity, disease and odor control, and fresh/stale air exchange. The calculations that are used to correctly design a ventilation system can be quite complex and require numerous known variables. The purpose of this article is to simplify these calculations while helping you to better understand grow room ventilation.
How to size your exhaust fan

There are many calculations on the web for sizing a fan for ventilating grow rooms; however, what these calculations fail to take into consideration is the friction loss on carbon filters, increased temperatures from HID lights and CO2, etc. The following calculation can be used as a guide for sizing an exhaust fan for a growing area (keep in mind that this calculation will give you the lowest required CFM required to ventilate the grow room):

Step 1 – Room Volume
First the volume of the room needs to be calculated. To calculate multiply length x width x height of growing area e.g. A room that is 8' x 8' x 8' will have a volume of 512 cubic feet.

Step 2 – CFM Required
The fan should be able to adequately exchange the air in a grow room once every three minutes. Therefore, 512 cubic feet/3 minutes = 171 cfm. This will be the absolute minimum cfm for exchanging the air in a grow room.

Step 3 – Additional factors
Unfortunately, the minimum cfm needed to ventilate a grow room is never quite that simple. Once the grower has calculated the minimum cfm required for their grow room the following additional factors need to be considered:

• Number of HID lights – add 5% per air cooled light or 10-15% per non-air cooled light.
  
  
• CO2 – add 5% for rooms with CO2 enrichment
  
  
• Filters – if a carbon filter is to be used with the exhaust system then add 20%
  
  
• Ambient temperature – for hot climates (such as Southern California) add 25%, for hot and humid climates (such as Florida) add up to 40%.

Example 1:

In our 8’ x 8’ room we have 2 x 1000w air cooled lights, and we plan to use a carbon filter. We also plan to use CO2 in this room. The ambient temperature is 90°F, however, we will be using air from another room that is air-conditioned.

Minimum Required CFM to ventilate room:

(CFM required for room – step 2) + (CFM required for room – step 2 x 10% (2 air cooled lights)) + (CFM required for room – step 2 x 5% (CO2)) + (CFM required for room – step 2 x 20% (Carbon Filter)) + (Ambient Temperature 0 (Air coming from air-conditioned room)).

= (171cfm) + (171cfm x 10%) +
(171cfm x 5%) + (171cfm x 20%) + ( 0 )

= 231cfm – this is the absolute minimum cfm required to ventilate your room.

 

[90Dank209]

I put the filter on top and have the fans to the left looks like its working temps been good so far