DrJohnZoidberg
Honorary Master
Curious to know what people have their solar differential temperature set to if you're using an evacuated tube system?
Now that I have all the data I can see the system kind of plateauing in the low/mid 30s most days even though the collector temp gets heated quickly. Had my differential temp set to the default 7C but experimenting now and raising it to 10C, testing to see if it makes a difference at all.
Only thing I can think of is that I'm getting too much loss between the collector and the geyser, so maybe raising this might work better, at least in winter.
Have graphed this showing the trend:

Now that I have all the data I can see the system kind of plateauing in the low/mid 30s most days even though the collector temp gets heated quickly. Had my differential temp set to the default 7C but experimenting now and raising it to 10C, testing to see if it makes a difference at all.
Only thing I can think of is that I'm getting too much loss between the collector and the geyser, so maybe raising this might work better, at least in winter.
Have graphed this showing the trend:



