110年 - 110 國立臺北科技大學_碩士班招生考試_車輛工程系：熱力學#101959

科目：研究所、轉學考(插大)◆熱力學 | 年份：110年 | 選擇題數：0 | 申論題數：9

試卷資訊

所屬科目：研究所、轉學考(插大)◆熱力學

選擇題 (0)

申論題 (9)

a. The highest temperature and pressure in the cycle. (10%)

b. The amount of heat transferred (kJ). (5%)

c. The thermal efficiency. (10%)

d. The mean effective pressure (MEP). (10%)

a. Find the final pressure. (5%)

b. Find the work in the process. (10%)

c. Find the final volume (10%)

d. Find the heat transfer in the process (10%)

3. A steam engine based on a turbine is shown in Fig. The boiler tank has a volume of 100 L and initially contains saturated liquid with a very small amount of vapor at 100 kPa. Heat is now added by the burner, and the pressure regulator does not open before the boiler pressure reaches 700 kPa, which it keeps constant. The saturated vapor enters the turbine at 700 kPa and is discharged to the atmosphere as saturated vapor at 100 kPa. The burner is turned off when no more liquid is present in the boiler. Find the total turbine work and the total heat transfer to the boiler for this process. (30%)