by db1979 » Mon Oct 30, 2017 8:07 pm
A cap full of bleach in 200 L is not going to be harmful if diluted further into spirits from a leaking pc. My students have performed experiments on model swimming pools and used something close to 5ml of bleach in a 50 L tub to get the right concentration of free chlorine. Even if the leak was 1 L/hr and you collected spirit at 2 L/hr (half of which would then be cooling water) then you'd still have half the concentration of chlorine in a swimming pool at most. While swallowing pool water isn't pleasant it's not altogether dangerous. Kids do it all the time when learning to swim.
However if adding bleach, it probably would be prudent to add some acid to lower the pH a bit. I'm guessing here, but I think a cap full of bleach should make 200 L of water pH of about 8 or 9. If the same water is continuously kept and more and more bleach is added (the chlorine goes but the caustic soda remains) the pH will get higher and higher. A pH just above 7 would be best.
I use fresh water each run, but my recirculating system only needs about 20 L. The twin fan radiator does the rest :handgestures-thumbupleft: