Answer:
The steam gives what is known as the LATENT HEAT OF VAPORIZATION TO THE ROOM
Step-by-step explanation:
The term known as " latent heat if vaporization" deals with changes in a specific phase of matter to another one, that is from liquid to vapor. It can be defined as the quantity or the amount of heat required to change the liquid into vapor.
Therefore, when the system send the steam into radiators in each room of the house the steam gives what is known as the LATENT HEAT OF VAPORIZATION TO THE ROOM.
The steam which Is first of all condensed In order to produce the latent heat of vaporization is then sent back into the system and then comes out again to repeat the process in the paragraph above.