Using Energy Concepts and the Ideal Gas Model As shown in Fig. P3.136, a piston–c...

Using Energy Concepts and the Ideal Gas Model

As shown in Fig. P3.136, a piston–cylinder assembly fitted with a paddle wheel contains air, initially at 560°R, 18 lbf/in.², and a volume of 0.29 ft³. Energy in the amount of 1.7 Btu is transferred to the air by the paddle wheel. The piston moves smoothly in the cylinder, and heat transfer between the air and its surroundings can be ignored. Assuming ideal gas behavior by the air, determine its final temperature, in °R.