Quote:
Originally Posted by Piotrsko
Need maybe 4 more of the big ones to fill the gap. You're losing pressure out the front sides. Better heat transfer efficiency will occur if you slow flow through the system a bit.
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6 of the 120mm fans would just about fill the width, and would fully fill the height. I'd make some frame that blocks off any gaps.
I wonder why fans seem to be an afterthought to these fireplaces? It would be a simple matter to have a fully ducted and sealed system that draws air from the bottom and sends it around through the top. The fans themselves could be mounted to the grate in front so they are out of the way when accessing the gas controls, and would be easy to service if one went out. Plus those computer cooling fans are stinkin cheap.
At any rate, I've decided to buy a purpose built fan since it has a speed controller and thermostat switch built in.