6.) Air undergoes Isothermal expansion in a Carnot cycle where the pressure decreases from 2.5 MPa to 1.5 MPa. This process has a temperature of 550 K and it decreases to 400 K before the Isothermal compression stroke. Find a.) Qa, b.) Qr, c.) Wnet (kJ/kg), d.) the efficiency (%), e.) draw the T-S diagram with proper label of points, and f.) the pressures before and after Isothermal compression • 71.55 kJ/kg, 61.78 kJ/kg, 9.77 kJ/kg, 13.65%, 251.52 kPa and 502 kPa • 80.66 kJ/kg, 58.66 kJ/kg, 22 kJ/kg, 27.27%, 492.08 kPa and 820.13 kPa • 61.22 kJ/kg, 41.22 kJ/kg, 20 kJ/kg, 29.98%, 315.1 kPa and 795.55 kPa • 1000 kJ/kg, 900 kJ/kg, 100 kJ/kg, 10%, 500 kPa and 1000 kPa

6.) Air undergoes Isothermal expansion in a Carnot cycle where the pressure decreases from 2.5 MPa to 1.5 MPa. This process has a temperature of 550 K and it decreases to 400 K before the Isothermal compression stroke. Find a.) Qa, b.) Qr, c.) Wnet (kJ/kg), d.) the efficiency (%), e.) draw the T-S diagram with proper label of points, and f.) the pressures before and after Isothermal compression • 71.55 kJ/kg, 61.78 kJ/kg, 9.77 kJ/kg, 13.65%, 251.52 kPa and 502 kPa • 80.66 kJ/kg, 58.66 kJ/kg, 22 kJ/kg, 27.27%, 492.08 kPa and 820.13 kPa • 61.22 kJ/kg, 41.22 kJ/kg, 20 kJ/kg, 29.98%, 315.1 kPa and 795.55 kPa • 1000 kJ/kg, 900 kJ/kg, 100 kJ/kg, 10%, 500 kPa and 1000 kPa

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Need help with this homework problem. At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Vd = 2.1 L. Determine per cylinder: a) the volume at state 1 in L.b) the air mass per cycle.c) the heat addition per cycle, in kJ.d) the heat rejection per cycle, in kJ.e) the net work per cycle, in kJ.f) the thermal efficiency.g) the mean effective pressure, in bar.h) Develop a full exergy accounting per cycle, in kJ. Let T0 = 300 K, p0 = 1 bar.i) Devise and evaluate the exergetic efficiency for the cycle.
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I only need help with filling in the answers for parts h and i. At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Vd = 2.1 L. Determine per cylinder: a) the volume at state 1.b) the air mass per cycle.c) the heat addition per cycle, in kJ.d) the heat rejection per cycle, in kJ.e) the net work per cycle, in kJ.f) the thermal efficiency in %.g) the mean effective pressure, in bar.h) Develop a full exergy accounting per cycle, in kJ. Let T0 = 300 K, p0 = 1 bar (See image below).i) Devise and evaluate the exergetic efficiency for the cycle. part h
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