[MaxxxRacer]

Ahh, very nice article ben. btw, how do those shunts work. I dont see any viable way of using them in a setup i would use without electrocuting myself??

As to measuring inlet outlet temperatures, from pH's tests those do seem rather futile so i gave up on trying to do those a long time ago, but that did seem the first route that i wanted to go with.

My thinking now is that I will measure the water temp on the radiator outlet and also measure the air temp. I am eyeing a RTD probe setup that has .001C res and .01C accuracy which would really help out in this endeavour as it comes with two RTD probes all ready to go.

The heater idea is interesting, but the only thing is that as more heat gets dumped into the room the rad inelt temp would get hotter. the only way to keep a perfect rad inelt temp is as bill mentioned is a chamber.. but none of us testers have anywhere near the fluid assets to buy one of those things. I guess if you had a thermostat on the heater that was connected to a thermocouple or RTD probe you could get the temperature relatively stable though.

BTW, my room is around 26C without any heaters. its this god forsaken computer that acts like a space heater...

I am going to measure the pressure drop of the fluid flow of the radiator, but I am not going to test the air pressure drop. What I will do is test with different sets of commonly used fans and see the performance levels with each fan at 5,7, and 12 volts. Doing this will give less of a quantitative number as to the pressure drop for the airflow, but will be a more realworld test i believe. It will help the end user choose their fans more wisely as most users WILL NOT go through the trouble of caclutlating the cfm a fan will give them by looking at the static presure curve of a fan related to its voltage and flow and looking at the pressure drop numbers of each radiator.

again, thanks for your input ben.