Buy an air conditioner. Another way is to put fans in the room and get the air circulating
No, if you are not in the room you are just wasting electricity.
No. The heat that is generated by cooling the inside is usually given off at the back of the refrigerator. If you leave the door open then everything will become room temperature.
It depends on what the room is being used for in my opinion. You would need a huge air conditioning to cool off that big of a room and the air conditioning still might not cool the entire room.
The surrounding air works with the hot food, cooling it off. This is because heat naturally wants to escape and cool off. Once it reaches air temperature, it cannot physcially cool off any more, though.
You need to leave the room and let them cool off same with your brother
Cross ventilation can cool a room with no appliances.
leave it to cool in a cool room to about room temperature and then refridgerate.
If you opened the refrigerator door a person can cool themselves off. It would not be energy efficient though to try to cool an entire room or house through use of a refrigerator. A refrigerator would not be capable of cooling that large of an area.
I would say yes if they are heavy enough.
No. While the air conditioner is on, keep the windows closed to keep the cool air from escaping to the outside.
First, what is 'cool' must be determine by the individual who owns the room. One that is determine, then a designer can be brought in that can design the room to the owner's wishes.
The room will cool if you open the freezer and leave it open.