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Will the boil point be higher
I have a 50 evac tube solar system for my domestic hot water. It is a closed loop system. The pressure in the loop is around 20 PSI. I know that water boils at 212 degrees F and I assume the glycol I have in the loop would also boil at that temperature. I was thinking, where the pressure in my loop runs about 20 PSI, would that raise the boiling point of the fluid like it does in an automobile? With a radiator pressure cap on a car radiator rated for let's say 10 PSI, the thermostat used would be around 225 to 230 Degrees. Just a thought. I was always concerned as to how high I should let the temperature go in my system. I generally let it go up to 170 degrees and then dump a lot of that heat/temperature during the night by the process called thermal syphoning.