TRANSFORMER ROOM FORCED AIR VENTILATION DESIGN CALCULATION
TRANSFORMER ROOM FORCED AIR VENTILATION DESIGN CALCULATION
(OP)
Can anybody suggest a design computation of a transformer room ventilation (forced air) with the following data?
Transformer area - 4.00m(L) x 3.00m(W) x 4.00m(H)
Location - at the side of the building
Transformer size
1000kVA, 13.8/0.415kV, 60hz
iron losses - 1,800 watts
copper losses at nominal load - 12,100 watts
Ambient Temp - about 30-35 deg C
We need to construct this room.
Thanks
Arvin
Transformer area - 4.00m(L) x 3.00m(W) x 4.00m(H)
Location - at the side of the building
Transformer size
1000kVA, 13.8/0.415kV, 60hz
iron losses - 1,800 watts
copper losses at nominal load - 12,100 watts
Ambient Temp - about 30-35 deg C
We need to construct this room.
Thanks
Arvin






RE: TRANSFORMER ROOM FORCED AIR VENTILATION DESIGN CALCULATION
RE: TRANSFORMER ROOM FORCED AIR VENTILATION DESIGN CALCULATION
respectfully
RE: TRANSFORMER ROOM FORCED AIR VENTILATION DESIGN CALCULATION
regards,
Arvin
RE: TRANSFORMER ROOM FORCED AIR VENTILATION DESIGN CALCULATION
RE: TRANSFORMER ROOM FORCED AIR VENTILATION DESIGN CALCULATION
We use a "rule of thumb" of 5cfm per kVA of transformer, which is conservative, but helps account for issues that hinder the performance of the blower. This would give you a value of 5000 cfm forced air ventilation. You should place the intake and exhaust on opposite sides of the room, with intake low and exhaust high.
RE: TRANSFORMER ROOM FORCED AIR VENTILATION DESIGN CALCULATION
As "AllGreek2me" stated however, (and if you can ventilate the room with air at an entering temperature sufficiently low at all times of the year to maintain the 30-35 degrees C), you could do it with just exhaust and outside or precooled air, but the air volume you would have to move would increase dramatically. 5000cfm is quite conservative, but not extraordinarily so.
Best of luck.
RE: TRANSFORMER ROOM FORCED AIR VENTILATION DESIGN CALCULATION