1. A computer lab filled with 20 computers and 15 students is cooled by an air conditioning

unit on a day where it is 90 °F outside. The room temperature is 72 °F. Assume an average

student generate 90 W of heat and each computer generates 150 W of heat. If the COP of

the air conditioner is 2.5, what power input is required, in kW? If the air conditioner

operated at its maximum coefficient of performance, what power input would be required?