graysky

@imperium: I actually just let the sun do it for me after leaving the windows open all night long (it was like 62 °F when I woke up this morning). I'll update the chart when it gets really hot out. I can totally expect 80 °F in this room with the A/C off. I'm guessing it will scale in this linear fashion.

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graysky

Updated 15-May with two higher temp points. It was like 85 °F outside today and I left the A/C off. Room got hot so I ran two additional points at about 76 and 77. Anyway, as you can see, it's all linear up to 77.5 °F and I suspect it'll continue that way if it gets hotter.

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graysky

Updated 19-May: Fixed a small error and put formulas for both °F and °C (of your room temp) on the graph. The relationship is: for every °F change in room temp, the load TJunction changes by 1-1/2 °C. Well, this is true for my system, YMMV...

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xenophobe

Great post!