Um, Oxy, restriction is a negative in this problem. Its a widely held believe, but not true.

As I kinda mentioned, heat transfer has been studied in detail, right here in Minnesota (get it?) since 1887. I don't think they are wrong.

There is no doubt that people might put in a restriction and "fix" the problem. But it didn't defy physics nor the research. It did something else to change the outcome. Turbulence aids heat transfer, as in more flow. You can't have too much flow.