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shoziku t1_j1zs5mx wrote

Reply to comment by drun3 in Ventilating Entertainment Center by GrnMtnTrees

Just using normal physics. You can't add cold, you can only remove heat. Exhaust fans work with this principle and not against it.

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furlongperfortnight t1_j20lpo3 wrote

Adding cold air however is a breeze.

Both positive and negative pressure systems work, and both have their own advantages.

In OP's case i'd go for a balanced system: two low speed 200mm fans, one intake one exhaust, both with filters (to keep pressure balanced).

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drun3 t1_j22kfo8 wrote

Either way you’re just getting airflow from the outside, so the cooling capacity is basically the same. The airflow patterns will be different inside the box of course, but either way you’re just exchanging air

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