Regarding the title of this thread, it is ridiculous. HVAC engineers do not do "blank runs" when they certify 1 MW boiler performance. That's not how they work. As I said, that is like expecting a bridge inspector to construct another bridge next to the one he is inspecting, in order to compare the two.
Do you think an aircraft inspector drags in a blank Boeing 747 to compare it? When they inspect an airplane and find a problem, do you think they deliberately crash it to confirm it really is a problem? Scientists do blanks. Industrial engineers do not. The do not need to prove the thing does not work under some circumstances, but only that it is working now. This is not skeptical thinking. It is ignorant. Learn something about how people do things in industry. - Jed
