Ventilation Louvres

wht s the better way to natural ventilation of hall ? plz provide the links if posible?

i want to know about the specification and application of different types of ventilation techniques use for normalizing the temperature of large hall which is fully functional also the different way of cooling except closed Circuit air conditioning VIA electric A/C systems...thats it!

Public Comments

1. IF YOU ALLREADY HAVE HEAT AND A/C UNIT THEN AN ALTERNATE WOULD BE TO CHANNEL A NOTHER DUCT TO CREATE MORE AIR TO THE HALL MENTIONED SOME AC CONTRATORS WILL GIVE YA FREE AD VISE ON THIS
2. 1)If you have sufficient wind velocity available in your place, you can utilise the velocity and intake the high velocity air to the hall with sufficient number of "NOZZLES"(reduced cross section of duct where hall inlet points) spread over the hall & allow return air out freely from bottom of the hall. 2)If not install exhaust fans near roof & free intake air passage windows from bottom portion of the hall.
3. It is not clear exactly what you wish to achieve but the natural way to ventilate a space is to have inlet openings near the bottom of the space (with in a foot or so of the floor) and outlet openings at the peak of the room. The all of the inlet openings should be evenly space around the perimeter. The outlet should run the full length of the roof peak if possible. The area of the inlet and out openings should be equal with the outlet opening slightly larger in area if possible. This arrangement permits convection currents to keep fresh air coming in near the bottom of the space. There will be an area in the center of the floor that will not be very well ventilated unless the space is relatively narrow.