An air conditioner is operating in a desert environment to cool air from 75F with a relative humidity of 20% (A = 0.2) to 55F. Assuming your...

An air conditioner is operating in a desert environment to cool air from 75◦F with a relative humidity of 20% (φA = 0.2) to 55◦F. Assuming your refrigeration cycle has a COPR of 3.5, what is the specific work required to achieve this? What is the percentage change in work required if the relative humidity at the inlet was increased to 80% (φB = 0.8)?