Hi IrvineChen, I like yr post on DIY.
Just wonder what is the optimal tank size (or max volume ) for the use of TEC chiller (before getting into compression type) in local climate to achieve say 23-24deg C?
Say if we would to use 30 or 40amp 12v power supply, could it not support 2 chilling Coil sets which have its own fans and have 2 sets of 8mm water piping for the tank?
This is like tantamount to using 2 TEC chillers (each has mft spec of 40lit max) to support one larger tank, with one controller/temp probe. 2 TEC chillers still cost less than 1 Gas comp chiller.
What's yr thought?
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Yes, the electricity bill is high, and the different of 1 degree ie between settings of 24 and 25 degree was quite a lot on the TEC chiller.
It cost more than $10-15 per mount for 1 deg C different at total cost of approx $40(??). The lady boss notice from the monthly pub bill!
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wow i will combine blue ice method with my current TEC. hopes the TEC wont kick in so often and waste electric.
thanks bro. as i need to cool down 3 1.5ft tanks. my TEC is working very hard... lolx
btw at 23-24 water condensation is very heavy. cant see anything in the tank...lolx
at 25 seems OK.
thanks bro
hi bro
i ordered a external themosat with power supply and temp sensor from taobao. $16
tec is a 2nd hand 225w 3peilter Dolphin mc790 modified with 3x12cm dc fans from simlim tower $12 each.
3 heatsink remains unchanged.
i just removed the original dolphin top casing and the 3x70mm stupid weak fans.
yes it can cool down 3 1.5ft gex deskboy tanks. for 1 tank it can reach 16 degrees if running 24x7.
now it runs 10.5 hours for 3 tanks at 26-24 degrees.
sorry forgot 1 thing.
i have insulated all the 3 tanks with 1 inch thick styrofoam board.
bottom side back and even top. this helps to stablize cool temp for longer time.
but i wanted to save electric, so i think blue-ice can help alot if i dump one piece into by bottom tank everyday before i go work.
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