Representative Rates at Which Heat and Moisture Are Given Off by Human Beings in Different States of Activity.

Both provide thermal comfort but in different ways.

Radiant cooling works in the opposite direction of heating by encouraging the loss of body heat via radiation..is the loss of heat from your clothing and skin via radiation which provides the cool sensation. With regards to just heating the lower half of the room..we can say is that has to be some very smart radiant energy because the energy we know doesn't know a lower half from an upper half - all it knows is hot goes to cold and because of this there is no "lower and upper half of the room" as it pertains to radiant energy.

You see it's not necessarily the radiant energy you are absorbing - it is the heat you are not losing which results in perceptions of comfort.

The amount of heat released via radiation for a clothed person at various metabolic rates is covered in Table 1.

Both locations are heated with radiant from the sun so using the incorrect logic of "radiant heat is dry heat" - how can this be when clearly conditions exists in Hawaii where it is wet?

So now do you see why radiant heat in of itself cannot be described as dry?The thermometer indicates temperature as being between subjective terms of hot and cold using units of C, F or K.The hygrometer describes the moisture as being between wet and dry using units of kg If you still dont see the difference - consider the warm and wet rain forest of Hawaii and the hot and dry conditions of the Sahara desert.When people state, "Radiant heat is dry heat" they are describing the coincident condition of moisture and temperature.The way to measure the coincident condition is with both a black bulb thermometer (mean radiant) and a wet bulb thermometer (aka a sling psychrometer).Ive never understood these comments since ventilation is required regardless of what type of HVAC system you have.