The cycle net work of an air standard Otto cycle is 900 kJ/kg with a maximum cycle temperature of 3000°C and the temperature at the end of isentropic compression is 600°C. Determine (a) the compression ratio, (b) the thermal efficiency and (c) the mean effective pressure, in bar, if the air intake pressure is 101 kPa.

The cycle net work of an air standard Otto cycle is 900 kJ/kg with a maximum cycle temperature of 3000°C and the temperature at the end of isentropic compression is 600°C. Determine (a) the compression ratio, (b) the thermal efficiency and (c) the mean effective pressure, in bar, if the air intake pressure is 101 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

See similar textbooks

Related questions

Q: Consider a modification of the cold air-standard Otto cycle in which the isentropic compression and…

Q: An air-standard dual cycle has a compression ratio of 14. At the beginning of compression, p1 = 14.5…

A: Given data as per the question Initial temperature of air =500F=510Rcompression ratio =14V1= 0.5…

Q: Consider an air-standard Otto cycle. At the beginning of the compression process, the pressure and…

A: We have to determine: 1-the pressure, temperature and volume. 2-the net work per cycle. 3- the…

Q: Consider a modification of the cold air-standard Otto cycle in which the isentropic compression and…

Q: ser % and 905

Q: An air-standard cycle consists of the following processes: (i) isentropic compression from 15°C,…

A: Note: According to Bartleby's guidelines first part is solved please upload the other parts…

Q: 1. An ideal Otto cycle has a compression ratio of 8. The temperature of air at the beginning of the…

Q: The compression ratio of an air-standard dual cycle is 10:1, it begins at 120 kPa and 300 K, and the…

Q: The compression ratio of an air-standard dual cycle is 12 and a cutoff ratio of 1.3. The pressure…

Q: In an ideal Otto cycle, the compression ratio is given as 9. At the beginning of the compression…

A: Given Data Ideal Otto cycle Compression ratio r=9

Q: The pressure and temperature at the beginning of compression of a cold air-standard Diesel cycle are…

Q: Consider a modification of the cold air-standard Otto cycle in which the isentropic compression and…

A: Answer: The mean effective pressure in the modified cycle: Pmep = 653.58 kPa

Q: displacement volume 0.95 ft3 running at 2250 RPM, and a clearance volume of 15%. A 715 BTU/lbm of…

Q: Consider a modification of the cold air-standard Otto cycle in which the isentropic compression and…

A: Given data Cycle : Otto cycle Compression Ratio = CR = 12 Polytropic index = 1.3 We have to find the…

Q: An air-standard Diesel cycle has a maximum temperature of 2000 K. At the beginning of compression,…

A: Given:Maximum temperature in cycle, T3=2000 KAt the beginning of compression, P1=95 kPa, T1=300 KThe…

Q: standard Otto cycle in which the isentropic compression and expansion processes are each replaced…

Q: Consider an air standard Otto cycle with compression ratio of 6. At the beginning of compression…

Q: The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic compression…

Q: 4 cylinder engine is operating with a compression ratio of 10 and maximum pressure of 50 bar. At the…

A: Given: Total volume, V1=2.5 LPressure in the beginning of compression stroke,P1=1 barTemperature at…

Q: The compression ratio of an Otto cycle working under air standard conditions is 8.0. Determine the…

A: Given Data: Compression ratio, 8.0 Heat supplied, Q=3500 kJ/kg

Q: The compression ratio of an air-standard dual cycle is 12 and a cutoff ratio of 1.3. The pressure…

A: GIVEN DATA - COMPRESSION RATIO r=12 CUT OFF RATIO rc=1.3 rp=1.5 P1=100KPa T1=20'C WE HAVE TO FIND…

Q: Consider a modification of the cold air-standard Otto cycle in which the isentropic compression and…

Q: In a Dual cycle, the volume at the beginning of the isentropic compression is 0.88 L and the…

Q: The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are 90…

A: The diesel cycle is the fundamental thermodynamic cycle for compression ignition engines, which…

Q: Group E c- Use the method of joints to determine the force in member CD d- Use the method of…

Q: An Otto cycle operating in an air standard conditions has a peak temperature of 800C. If the heat…

A: Given that, Peak temperature of otto cycle, T=800 °C,Head added in each cycle, Qadded=350 kJ/kg,…

Q: OTTO CYCLE 5. The cycle net work of an air standard Otto cycle is 900 kJ/kg with a maximum cycle…

Q: The pressure and temperature at the beginning of compression of a cold air-standard Diesel cycle are…

Q: Consider a modification of the cold air-standard Otto cycle in which the isentropic compression and…

Q: The temperature at the beginning of the compression process of an air-standard Otto cycle with a…

Q: An air-standard cycle consists of the following processes (i) isentropic compression from 15°C, 1.01…

A: Note: Only First Part Has Been Solved.You have posted to many question and we are bound to answer…

Q: In a Dual cycle, the volume at the beginning of the isentropic compression is 0.85 L and the…

Concept explainers

IC engines

The term "engine" indicates a mechanical device/machine used to convert input energy to a specific mechanical output. The input energy may be in the form of chemical energy, thermal energy, or so on and mechanical output is in the form of mechanical energy (work done). Generally, the engines classify into two groups which are internal combustion type and external combustion type, and further, these two types can be classified into two types that are reciprocating and rotary engines.

Question

The cycle net work of an air standard Otto cycle is 900 kJ/kg with a maximum cycle
temperature of 3000°C and the temperature at the end of isentropic compression
is 600°C. Determine (a) the compression ratio, (b) the thermal efficiency and (c)
the mean effective pressure, in bar, if the air intake pressure is 101 kPa.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Trending now

This is a popular solution!

Step by step

Solved in 5 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

An Otto cycle with the air-standard assumptions (cv=0.717 kJ/kg.K and cp/cv=1.4) has a compression ratio of 10. Before the isentropic compression process, the air is at 140 kPa, 15°C, and 590 cm3. The heat transfer to the air per cycle is 1200 kJ/kg. The angular speed of the crankshaft for the four-stroke engine is 2400 revolutions per minute. Determine(a) the thermal (first law) efficiency,(b) the second law efficiency,(c) the net specific power output of the cycle (in kJ/kg)(d) the mean effective pressure (MEP),(e) the horse power (hp) of the engineNote: You must draw P-V and T-s charts and mark processes to have a score
An air-standard Diesel cycle has a maximum temperature of 2000 K. At the beginning of compression, p₁ = 95 kPa and T₁ = 300 K. The mass of air is 12 g. For a compression ratio of 25, determine: (a) the net work of the cycle, in kJ. (b) the percent thermal efficiency. (c) the mean effective pressure, in kPa.
THERMODYNAMICS The compression ratio of an air-standard dual cycle is 14 and the cutoff ratio is 1.2. During the constant-volume heat addition process, the pressure ratio is 1.5. Determine the thermal efficiency, heat added, maximum gas pressure, and temperature when this cycle is run at 80 kPa and 20 degree celcius at the start of the compression. Make use of the cold-air assumption. Show complete solution on a paper.
The max temperature of an Otto cycle working under air standard conditions is 8000 degrees Celsius. Determine the compression ratio of the cycle if the heat injected in each cycle is 350kJ/kg.
The pressure and temperature at the beginning of compression of a cold air-standard Diesel cycle are 90 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 7.2 MPa and the temperature is 2050 K. Assume constant specific heats evaluated at 300 K. Determine: (a) the compression ratio. (b) the cutoff ratio. (c) the percent thermal efficiency of the cycle. (d) the mean effective pressure, in kPa.
An Otto cycle operating in an air standard conditions has a peak temperature of 800degree C. If the heat added in each cycle is equal to 350kJ/kg, determine the compression ratio of the cycle.
In a Dual cycle, the volume at the beginning of the isentropic compression is 0.85 L and the pressure is 1 bar. If the swept volume of the cycle is 0.78 L, the volume ratio during the constant pressure heat addition process is 2.1, the pressure ratio during the constant volume heat addition process is 1.9, the specific heat ratio is γ=1.3 and the work done is 455 kJ/kg, the heat rejected in kJ per kg of air is:
The compression ratio of an air-standard dual cycle is 12, and the pressure at the beginning of compression is 14.7 psia, the volume is 75 in3, and the temperature is 100 F. During the heat-addition processes, 0.4 Btu is transferred at constant volume and 1.0 Btu at constant pressure. Determine: (a) the cycle thermal efficiency (b) the pressure at the beginning of heat rejection.
The pressure and temperature at the beginning of compression of an air-standard Diesel cycle are 90 kPa and 300 K, respectively. At the end of the heat addition, the pressure is 6821 kPa and the temperature is 1950 K. The Compression Ratio is 23.24 Determine the compression ratio.
In a Dual cycle, the volume at the beginning of the isentropic compression is 0.88 L and the pressure 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 γ=1.32 and the work done is 450 kJ/kg, the heat rejected in kJ per kg of air is: Select one: a. 621.4 b. 705.2 c. 446.3 d. 124.5
In an Otto cycle, the volume at the beginning of the isentropic compression is 0.8 L. If the displaced volume of the cycle is 0.72 L, the specific heat ratio is y=1.32 and the heat added is 872.7 kJ/kg, the work done in kJ per kg of air is: Select one: O a. 1024.5 O b. 455.0 O c. 705.2 O d. 521.4
A 4 stroke spark ignition engine operates on an ideal Otto cycle with a compression ratio of 8.5. This engine compresses the fresh air-fuel mixture from its initial volume to a final volume of 75cm. The air is at 101kPa and 20°C prior to the compression stroke. Temperature at the end of isentropic expansion is 750K. Make air standard assumption to solve this problem. Air properties: cp = 1.005KJ/kg.K; cy = 0.718KJ/kg.K; R = 0.287KJ/kg.K. Determine, • Mass of air in the engine (in kg). (answer to 4 decimals) (Hint: treat air as ideal gas at start of intake stroke - point 1 on P-V diagram) Isentropic Isentropic * Iout BDC TDC