During winter, a fully-lit room is to be maintained at DB = 25 C and RH = 60%. If the sensible heat load is 400 kJ/s and the latent heat load is 600 kJ/s, at what wet bulb temperature does the inlet air (DB = 20 C) need to be maintained? Also, what does it need to be when all electric equipment are off (Qs = 200 kJ/s)?