There are many ways to cool down your body temperature.
Some of them technical and some others just basic life hacks like wearing proper clothes.
But first keep in mind the golden rule : Cold air always prefer to flow downward while hot air flow upward.So if you try to cool a place do not try to flow cold air from the top , hot air will heat the cold air and you will not succeed cold the room. Also opening a small hatch in room's ceiling will help hot air to flow away. So having "wasistas windows" will help a lot.
A Technical Cool Tip :
Technically you can use Ventilators to cool down the room; all you need is a ventilator and ices cubes hanged behind it so cold air can flow in room.
A Basic Life Hack Tip :
Always wear 100% COTTON clothes it will help you to balance your body temperature. And joints, armpits, elbows,nape and back of the knees are the most open places for your vessels .If you use and cold things like frozen bottles on them will help you to feel cold fast then any part of your body.
But aware of cold burn!
For your health always be sure the temperature difference between outside and inside should not be more than 6-8 degrees.
I hope these little informations helps.