I am currently using 40kw of electricity for my miners and was wondering if a 2.5 ton AC would be sufficient to lower the ambient temperature between 80-90 F. I have a 3000 cfm fan pulling air out of the room and a 3000 cfm fan bringing in 80 F air in. The room temperature is 115 F. Any suggestions would be helpful.
40000 w * 3.4 btu/w = 136,000 btu heat generation.
Rough, general, sometimes/often wrong is to spend half again as much on cooling.
136,000 / 2 = 68,000 BTU cooling
1 Ton is 12,000 BTU/Hr
So, if you believe all the rough generalities, you need a 6 ton AC unit. Even if it is wrong, it gets you into the right ballpark.