Example 5.1: In an air standard Otto cycle, the pressure, and temperature at the start of the com-pression stroke are 0.1 MPa and 300 K, respectively. The temperature at the end of the compres-sion and at the end of the heat addition processes are 600 and 1,600 K, respectively. Calculate(i) thermal efficiency, (ii) heat added, (i) net work per kg of air, and (iv) mean effective pressure.

Answered: Image /qna-images/answer/89f1d838-9cda-4104-823b-59e7b53bd1f3.jpg

Answered: Example 5.1: In an air standard Otto…

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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please send handwritten solution Q2 part b
11586 D (1) WhatsApp ses This course Od. 0.857 EHide blocks In a Dual cycle, the volume at the end of the isentropic compression is 0.07 L and the pressure at the beginning of the compression stroke is 1 bar. If the swept volume of the cycle is 0.81 L, the volume ratio during the constant pressure heat addition process is 2.2, the pressure ratio during the constant volume heat addition process is 1.95, the specific heat ratio is y=1.32 and the work done is 450 kJ/kg, the heat rejected in kj per kg of air is: Select one: Oa. 621.4 Ob. 446.3 Oc. 124.5 O d. 705.2 In a Diesel cycle, the air at the beginning of the isentropic compression is at 1 bar The volume at the end of the isentropit compression process is 0.07 L. the displaced volume of the cycle is 0.78 L the temperature at the beginning of the compression process is 27 C. the pressure at the end of the expansion process is 2.3 bar, the specific heat ratio is =1.35, the specific heat at constant volume Cy = 0.77 kl/kg K and the gas…
please send handwritten solution Q2 part a
Draw the graph of Otto air standard cycle and prove that the thermal efficiency is equal to: Motto = 1_1/r^y-1 , where r is the compression ratio and y is the specific heat ratio.
(b) Why do most very large engines operate on a two-stroke cycle?
H.W2: An air-standard Carnot cycle is executed in a closed system between the temperature limits of 350 and 1200 K. The pressures before and after the isothermal compression are 150 and 300 kPa, respectively. If the net work output per cycle is 0.5 kJ, determine (a) the maximum pressure in the cycle, (b) the heat transfer to air, and (c) the mass of air. Assume variable specific heats for air. Answers: (a) 30,013 kPa, (b) 0.706 kJ, (c) 0.00296 kg
2.18
Thermodynamics

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