Room Size: 168 m3, Air change/Hr: 20, CFM: 1975, Outside Temp:104 F, Room Required temp: 71 F, Outside RH: 85%, Expected RH: 22%, system required 20 % fresh air and 80 % return air.

So, Sensible Heat: 1.085X1975X(104-71)/12000 = 5.87 Ton
& Latent Heat: 4.840X1975X (139 - 31.43)/12000 = 86 Ton,

if I overlook other heating load, then total load = 91.87 Ton, but I don't think so, its too much for 168 m3 room, what was my problem with the calculation? Please help?