I’m staying in an apartment temporarily and I have absolutely no idea how it is heated. It’s a two-bedroom apartment. There is no thermostat. There are no vents. There is one radiator in the apartment’s living room, at the front and down the hall from the bedrooms, and one radiator in the bathroom.
I have felt every wall in my bedroom. All of them are cool. The floor is also a normal temperature.
And yet, despite it being at or below freezing most nights in the past month, I can be in my bedroom without a shirt on and be comfortable. It might be nice to be a little warmer, but I don’t feel cold or anything.
I am mystified. How is it being heated?
Perhaps adjacent/lower apartments are heated and are leaking enough heat to you.
Would the walls and floor still be cold if they were doing that? I honestly have no idea how that would work.
Actually yes, because “warm air” and “warm solid surface” are at two different temperatures to us due to unequal heat transfer.
The walls just have to be slightly above the air temperature to heat it up, and they may feel a bit cold anyway.