puffnstuff
Well-Known Member
- Joined
- Jun 27, 2008
- Messages
- 273
- Reaction score
- 216
I am always reading threads about heat problems and I see a lot of mis-information so I just thought I should tell ya'll a little secret that goes against what you might believe. It doesn't matter how much air you have flowing over your bulb, it will still put out all of it's radiant heat. The air only cools the item's(metal and glass in the hood) that have been heated by the radiant heat. the air cool's by impacting on these heated surfaces and remove's the heat through conduction. The air particles come in contact with the surface and transfer the heat to the air and carry it away. This is why it is so important to have a fan blowing in your grow. It is to remove the heat from the plants through conductivity by impacting on the surface's. You can greatly increase the cooling effect of your airflow in your hood by causing the air to be disturbed instead of flowing straight through. The turbulance inside the hood will cause more air to impact on the interior surface of the hood and remove the heat. You can get away with FAR LESS AIRFLOW than people are useing around here.
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