In no-load mode, the temperature has decreased significantly, from 50 degrees C to only 30 degrees C, despite running stress test but still very cool.
In the video, James also revealed that he had the idea of improving his design so that it was more effective by using a better pump and more durable water pipes.
It could be said that James's radiator, but using James's air radiator, was unique and never appeared before. You can follow the whole process of creating this radiator for James in the following video: