Sure, but what you are calling a reason for 'gripe' is what others might, in some circumstances, regard as the 'great advantage' of radiant heating - as your own example really goes on to illustrate ...
The cost difference between trying to heat all of the air in "a farm building with no insulation" and heating just a person within it must be very dramatic.
Indeed, that even happens with the likes of coal fires, unless/until they have been going for long enough to significantly heat the air in the room.Indeed but very often these 'ad hoc' situations spring up with very little control. For example when working at Royal Chelsea Hospital the basement space made available to me as a workshop basically had an open arch as means of access on one side and multiple large openings on the opposite side, this was on opposite sides of the very large building so there was a permanent cold wind blowing through even in the summer when i was working there.
Yep, I agree - as I implied, the ideal is (two or more) at 'person level' (not 'high up and pointing down, which one often sees).
Fair enough, but what would be your solution to that? - surely not to attempt to heat all the air in a "very large building [with] a permanent cold wind blowing through it" ?!
I think the important part is limiting the distance (within reason of course, after all we don't want to be preparing our bodies for dinner) and shadows between heater and person.
Just explaining why some venues are less than ideal as work places. Yes IR could very well be a good option there.
Quite - that was my point. As I said, in the situation you describe, IR could well be the least of the evils.
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