A 100mol/h humid air stream containing 10mol% water vapor is to be dehumidified using an air cooler. Part of the dehumidified air stream leaving the air cooler is recycled and mixed with the fresh air feed. The combined feed to the air cooler contains 8 mol\% water. The air cooler removes 80% of the water in the fresh air feed. Draw a labeled flowehart for the process. "label all simeams" and calculate the flow rate and composition of the recycle stream