Problem
1. An air compressor is used to charge an initially empty 7-ft3 tank with air up to 750 lbf/in.2. The air inlet to the compressor is at 14.7 lbf/in.2, 60 F and the compressor isentropic efficiency is 80%. Find the total compressor work and the change in exergy of the air.
2. An electric stove has one heating element at 600 F getting 750 W of electric power. It transfers 90% of the power to 2 lbm water in a kettle initially at 70 F, 1 atm; the remaining 10% leaks to the room air. The water at a uniform T is brought to the boiling point. At the start of the process, what is the rate of availability transfer by (a) electrical input, (b) from the heating element, and (c) into the water at Twater?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.