Question 1 Consider an engine operating on the ideal Otto cycle with a compression ratio of 9.5. At the beginning of the compression process, the air is at 100 kPa and 25°C. During the constant-volume heat-addition process, 850 kJ/kg of heat is transferred to air from a source at 1800 K and waste heat is rejected to the surroundings at 290 K. Accounting for the variation of specific heats of air with temperature, determine (a) the thermal efficiency of this cycle, (b) the exergy destruction associated with the heat-addition process, (c) the exergy destruction associated with the heat-rejection process, and (d) the second-law efficiency of this cycle.

Question 1 Consider an engine operating on the ideal Otto cycle with a compression ratio of 9.5. At the beginning of the compression process, the air is at 100 kPa and 25°C. During the constant-volume heat-addition process, 850 kJ/kg of heat is transferred to air from a source at 1800 K and waste heat is rejected to the surroundings at 290 K. Accounting for the variation of specific heats of air with temperature, determine (a) the thermal efficiency of this cycle, (b) the exergy destruction associated with the heat-addition process, (c) the exergy destruction associated with the heat-rejection process, and (d) the second-law efficiency of this cycle.

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

See similar textbooks

Similar questions

5.7. For the "standard atmosphere" shown in Fig. 5.5, perform the following calculations= (a) Derive the pressure-height relation for the troposphere. (b) Calculate the pressure at the troposphere-stratosphere boundary. (c) Derive the pressure-height relation for the stratosphere.
How railways transportation make use of thermodynamics?
1. thermodynamics
The molar heat capacities of substances varies with temperature. The general function for determining the molar heat capacity is given below; Cp = ( a + b T + c T 2 )R . In case of a gas where a = 3.245, b = 7.108 x10 ^-4 K ^-1 , and c = -4.06 x10^ -8 K ^-2 for temperatures in the range of 300 Kelvins to 1,500 Kelvins. What is the heat capacity (in Joules per Kelvin per mole) of this gas at 1,500 kelvins? NOTE: Express answer in THREE SIGNIFICANT FIGURES.
state kelvin statement of the second law of thermodynamics Please explain clearly
Thermodynamics Determine the force required to accelerate a mass of 25 lb at a rate of 80 ft/sec^2 vertically upward.
Describe the operation of thermodynamic systems and their properties
State the difference between extensive, intensive and specific properties of a thermodynamic system.
20. Give an example of a thermodynamic system, and explain briefly how it operates using your initial knowledge of thermodynamics.
(c) Define what is the Zeroth Law of Thermodynamics. Briefly explain your answer by stating ONE (1) situation that happens around you.