Some caveats:
You cannot purchase 100% H2O2. The stuff that you get from the drugstore is extremely dilute for safety purposes. I think no more than 5% in water.
You will have compounds in the loop which H2O2 (even diluted) will react with: plasticizers and absorbed water wetter on the tubing for one. These organics WILL react through free radical chemistry to form CO2 (from the organics) and H2O and O2 (from H2O2). What you are in essence doing is oxidizing away all of the "gunk" and creating gases as a result. You could use this as a way to clean the loop as long as you left the bleed valve or top of reservopir cracked to release gases.
As for using it as a long term coolant to kill biological organisms: this would work for a while, but initially the H2O2 will all be used up, and you will just have water that is saturated with oxygen.
|