HI Phil

first rodeo here but i have been a lurker for sometime. I am allowing enough funds to purchase upto 6 x s21 235th

, i know that it has been done lots with s19s from research however one of the suppliers told me that the S21 do not like being submerged and this will put a spanner in the works for me

Immersion is the only way for me to go as i have to keep the noise and internal heat to absolute minimum even in an outbuilding.

I have access to an size of automotive/commercial truck type radiator for the outside cooler part. My good friend can tig weld and i have a spare few sheets of 3mm aluminmum for the tanks.

Then its just a case of adding pipe work for the circuit, pump and enough bitcool for immersion.

I have a 32 amp and 68 amp it armor cable going out to the out building already in trench etc, i just need to finish the MCB on opposite end.

Ethernet connections all ready to connect


Originally i was going to use the radiators as a heat exchanger type set up to dump the heat into a pool, however thinking about it i dont think it will work so well. If you want to keep the bitcool at 25 degrees max then that is not going to be a very warm pool.

At 35 degrees i think the miners loose some efficiency.

So i either submerge the radiators in a constant cold sub 15 degree supply of fresh water, or i have to run fans on the radiators to dump the heat into the atmosphere?

Are you doing any immersion cooling with S21?