Q11: An engine working on the constant volume cycle has a compression ratio of(8 to 1). The pressure and temperature at the beginning of the compression strokeare (105 N/m²) and (80 °C). The maximum pressure in the cycle is (40*105 N/m²).Assume y=1.4 and calculate (a) the temperature at the major points of the cycle.(b) The ideal effici Answers: (a) T2=811K, T3=1765K, T4=768.26K (b) 56.47 %

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Answered: Q11: An engine working on the constant…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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An iseal Brayton cycle has a pressure ratio of 6:1. The temperature of the air is 22 degrees celsius at the inlet to the compressor and 1080 derees celsius at the inlet to the turbine. Take specific heat at constant pressure and constant volume for air as 1,006 KJ/kg K and 0,717 KJ/kg K respectively. Calculate: 1. the compresion absolute temperature to one decimal place 2. the work ratio of the plant to three decimal places 3. the specific work output to the turbine and specific work input to the compressor , to one decimal place and SI unit 4. the thermal efficiency of the plant to one decimal place
An air-standard dual cycle has a compression ratio of 8.6 and displacement of Va= 2.2L. At the beginning of compression, p1 = 95 kPa, and T1= 290 K. The heat addition is 4.5 kJ, with one quarter added at constant volume and the rest added at constant pressure. Determine: a) each of the unknown temperatures at the various states, in K. b) the net work of the cycle, in kJ. c) the power developed at 3000 cycles per minute, in kW. d) the thermal efficiency. e) the mean effective pressure, in kPa.
An air-standard dual cycle has a compression ratio of 8.6 and displacement of V = 2.2 L. At the beginning of compression, p1 = 95 kPa, and T1 = 290 K. The heat addition is 4.25 kJ, with one quarter added at constant volume and the rest added at constant pressure. Determine: a) each of the unknown temperatures at the various states, in K. b) the net work of the cycle, in kJ. c) the power developed at 3000 cycles per minute, in kW. d) the thermal efficiency. e) the mean effective pressure, in kPa.
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3 The total volume displaced in the cylinder for a Carnot Cycle is easily determined with Isothermal expansion ratio True False
An air-standard dual cycle has a compression ratio of 9.1 and displacement of Vd = 2.2 L. At the beginning of compression, p1 = 95 kPa, and T1 = 290 K. The heat addition is 5 kJ, with one quarter added at constant volume and the rest added at constant pressure. Determine: a) each of the unknown temperatures at the various states, in K.b) the net work of the cycle, in kJ.c) the power developed at 3000 cycles per minute, in kW.d) the thermal efficiency.e) the mean effective pressure, in kPa.
An air-standard dual cycle has a compression ratio of 9.1 and displacement of Va=2.2 L. At the beginning of compression, p1 = 95 kPa, and T1 = 290 K. The heat addition is 4.5 kJ, with one quarter added at constant volume and the rest added at constant pressure. Determine: a) each of the unknown temperatures at the various states, in K. b) the net work of the cycle, in kJ. c) the power developed at 3000 cycles per minute, in kW. d) the thermal efficiency. e) the mean effective pressure, in kPa.
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An air-standard dual cycle has a compression ratio of 8.6 and displacement of Vd = 2.2 L. At the beginning of compression, p1 = 95 kPa, and T1 = 290 K. The heat addition is 4.75 kJ, with one quarter added at constant volume and the rest added at constant pressure. Determine: a) each of the unknown temperatures at the various states, in K.b) the net work of the cycle, in kJ.c) the power developed at 3000 cycles per minute, in kW.d) the thermal efficiency.e) the mean effective pressure, in kPa.

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