A flow of air at 5C, = 90%, is brought into a house, where it is

Question:

A flow of air at 5°C, ϕ = 90%, is brought into a house, where it is conditioned to 25°C, 60% relative humidity. This is done with a combined heater-evaporator where any liquid water is at 10°C. Find any flow of liquid, and the necessary heat transfer, both per kilogram dry air flowing. Find the dew point for the final mixture.