18-05-2022, 11:22 AM
I did something similar a few years ago. I found that the main heat flow in the radiator was across the top and diagonally through to the bottom hose. The lower left side portion of the radiator didn't get anywhere near the temperature change. My ambient at the time was 34C.
If I find the images I will put them up.
If I find the images I will put them up.