SupraSPL
Well-Known Member
I bought one of those mini fridges from Craigslist and took the Peltier and heatsinks out of it. Installed it in a medium size insulated grow box (36"wideX24"deepX48"tall) with the cold heatsink and fan inaside the box and the hot side heatsink, fan and power supply outside the box. I kicked it on during lights off to test it out and it lowered the temp from 77 to 71 in about 6 hours.
That seems pretty useless it must be too small for a room that size. The whole system draws 68 watts total. Each fan takes 2 watts so I assume the peltier itself is a 46 watter and it is running at 12v so maybe drawing a bit less, the rest is waste in the power supply.
So maybe it would be helpful in a micro grow or if I got a beefier one it could affect a medium size box during lights on. The peltiers are cheap as dirt and easy to get, the problem is finding heatsinks and AC-DC power supply that is big enough and efficienct (PC power supply is probably where its at).
That seems pretty useless it must be too small for a room that size. The whole system draws 68 watts total. Each fan takes 2 watts so I assume the peltier itself is a 46 watter and it is running at 12v so maybe drawing a bit less, the rest is waste in the power supply.
So maybe it would be helpful in a micro grow or if I got a beefier one it could affect a medium size box during lights on. The peltiers are cheap as dirt and easy to get, the problem is finding heatsinks and AC-DC power supply that is big enough and efficienct (PC power supply is probably where its at).