One kmol of an ideal gas at 500 K is taken through an adiabatic expansion from 5 to 3 bar. Theprocess is reversible. ̄CV= 21.686J mol−1K−1and ̄Cp= 30J mol−1K−1. Calculate Q, W, ∆Uand∆Hfor the process. Draw the path/process on thePV diagram. What is the final temperature of the gas?

A piston-cylinder assembly contains 2 lb of water initially at 100 lbf/in² and 400°F. The water undergoes two processes in series: a constant-pressure process followed by a constant -volume process. At the end of the constant-volume process, the temperature is 300°F and the water is a two-phase liquid-vapor mixture with a quality of 60%. Neglect kinetic and potential energy effects. a) Sketch T-v diagram b) Sketch p-v diagram c) Label states with their p, v, and T values d) Identify where work is done on or by the system on the diagram. Indicate whether it is done on or by the system. e) Determine the work and heat transfer for each process in Btu.

An Inventor claims to have developed a refrigeration unit which maintains the refrigerated space at -3°C while operating in a room where the temperature is 27°C, and which has a coefficient of performance of 9.5. How do you evaluate his claim?

デジタル形式で段階的に解決 ありがとう!! SOLVE STEP BY STEP IN DIGITAL FORMAT Exercise 1. A 1482 ft^3 rigid container contains compressed air at 1 MPa and 35 °C. Determine how much work can be obtained from this air if the ambient conditions are 100 kPa and 35 °C.