But when I lose that heat through radiation it would presumably bounce around the room and not much reflects back onto my body.
So I’m not seeing how much this really helps. My radiated heat shouldn’t be returning to me anyway.
So I’m not seeing how much this really helps. My radiated heat shouldn’t be returning to me anyway.
You emit thermal radiation at a black-body temperature of 37C or so to the environment, but the average surface nearby (in a non-air-conditioned environment) will be radiating back at 30C or so, for very little net heat loss.
The innovation described here is to replace the local environment with a chilled one that interacts only by radiation. The air with very little mass contributes negligible radiation to the system, so you radiate heat outwards but receive little in return.