精品吉林大学汽车工程学院本科课程考试试卷.pdf

k = 1.4 c =1.004kJ/(kg ·K) c =0.716kJ/(kg ·K) R =0.287kJ/(kg ·K) p 0 v0 g κ p 2 (κ−1) κ cf 2 2 p 0 v0 [1−( ) ] κ−1 p 0 1. A -0 B [01] C [1k] D k + 2. A B C D 3. A B C D 4. A B C D 5. A B C D E 6. A B C D 7. A B C D 8. A B C D 9. A B C D 0 10. A B C D 1.sp TT-s 2.4 3. 4. 5.h-d 1 6 6. p -v 1-12-2 p 1 p 1 p 2 p 2 . n .p 0.5MPa T 600K p 0.1MPa 1 1 b cf2 3.0.1MPa17 0.7 MPa 1 2 1kg 3 p-v T-s 4. A rigid tank contains a hot fluid that is cooled while being stirred by a paddle wheel. Initially, the internal energy of the fluid is 800kJ. During the cooling process, the fluid loses 400kJ of heat, and the paddle wheel does 100kJ of work on the fluid. Determine the final internal energy of the fluid. Neglect the energy stored in the paddle wheel. 5. A Carnot heat engine receives 500kJ of heat per cycle from a high-temperature source at 652 and rejects heat to a low-temperature sink at 30 . Determine (a) the thermal efficiency of this Carnot engine and (b) the amount of heat rejected to the sink per cycle.