Recycle in a Dryer. A solid material containing 15.0 wt % moIsture is dried so that it contains 7.0 wt % water by blowing fresh warm air mixed with recycled air over the solid in the dr yer. The inlet fresh air has a humidity of 0.01 kg water/kg dry air, the air from the drier that is recycled has a humidity of O.1 kg water/kg dry air, and the mixed air to the dryer, 0.03 kg water/kg dry air. For a feed of 100 kg solid/h fed to the dryer, calculate the kg dry air/h in the fresh air, the kg dry air/h the recycle air, and the kg/h of "dried" product. Ans. 95.6 kg/h dry air in fresh air, 27.3 kg/h dry air in recycle air, and 91.4 kg/h "dried" product