4. A Diesel cycle has a temperature at the beginning of the compression is 172.4°F. The temperatures at the isentropic expansion process are 3,263°F and 1,250.6°F, respectively. If the compression ratio is 15 and the pressure at the beginning of the compression is 2,116.8 psf, find the cut-off ratio and the thermal efficiency of the cycle. Assume y = 1.4.

4. A Diesel cycle has a temperature at the beginning of the compression is 172.4°F. The temperatures at the isentropic expansion process are 3,263°F and 1,250.6°F, respectively. If the compression ratio is 15 and the pressure at the beginning of the compression is 2,116.8 psf, find the cut-off ratio and the thermal efficiency of the cycle. Assume y = 1.4.

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: An open, ideal Otto-cycle engine has a compression ratio of 10. The air just prior to the…

A: dear student please rate me postive :) Data given - Date-givencompression radio r = 10Thermal…

Q: 2. A Diesel cycle has an initial temperature of 27°C. If the cut-off ratio is 2.50 and compression…

A: Calculate the initial temperature of the cycle in Kelvin. T1=27°C+273 =300 K Here, T1 is the…

Q: an ideal reheat cycle, the steam throttled condition is 8 MPa and 480 degree C. the steam is then…

A: Determine the quality of steam at the last stage of isentropic expansion in the turbine ???

Q: A cold air-standard Otto cycle has a compression ratio of 12 and the temperature and pressure at the…

Q: A simple actual Brayton cycle using air as the working fluid has a pressure ratio of 8. The minimum…

A: For the Simple Brayton cycle, with air as working fluid, it is given that: Pressure ratio, P2P1=8…

Q: Q2: An air-standard Diesel cycle has a compression ratio of 18, and heat transferred to the working…

Q: 3. For an ideal diesel cycle, the pressure at the beginning and at the end of compression are 98 kPa…

Q: An ideal Otto engine, operating on the hot-air standard with k=1.34, has a compression ratio of 5.…

Q: : Consider a spark-ignition engine in which the effective volume ratio (V1/V2) is 8:1. Compare une…

Q: A simple actual Brayton cycle using air as the working fluid has a pressure ratio of 8. The minimum…

A: Pressure ratio =8minimum temperature in the cycle=310 Kmaximum temperature in the cycle=1160 K

Q: compression ratio of 8 is achieved by using an ideal air-standard Otto cycle engine. The working…

Q: A diesel engine cycle uses air as the working substance. The inlet state of Isentropic compression…

Q: A 4.5 L four-cylinder diesel engine operates on the ideal Diesel cycle, with a compression ratio of…

A: Given: Initial pressure is P1=97 kPa Initial temperature is T1=27°C=300K Initial volume is V1=4.5L1…

Q: ): Consider a spark-ignition engine in which the effective volume ratio (V1/V2) is 8:1. Compare the…

A: GIVEN DATA- Volume ratio V1/V2=8:1 Pressure at inlet P1=100KPa Isentropic index =1.4 Polytropic…

Q: An ideal Otto engine, operating on the hot-air standard with k-1.34, has a compression ratio of 5.…

A: 1 BTU = 1055.06 j so 340 BTU = 358,720.4 J- > Heat added 1 Psia = 6.89476 Kpa 13.75 Psia =…

Q: A simple actual Brayton cycle using air as the working fluid has a pressure ratio of 8. The minimum…

A: Draw the T-s diagram of the Brayton cycle as shown below,

Q: n ideal Otto cycle has a compression ratio of 10.5, takes in air at 90 kPa and 40°C, and is repeated…

A: The thermal efficiency of an ideal Otto cycle is given by: η=1-r^(1-k),…

Q: The compression ratio of an Otto cycle as shown in the figure below is VA/VB = 9.00. At the…

A: Given that VA=505 cm3 , VAVB= 9 = compression ratio(r) The process of compression and expansion is…

Q: In an ideal Rankine cycle, the steam throttle condition is 4.10 MPa and 440oC. If turbine exhaust is…

A: Given that , P1=4.10MPaT1=440°C P2=0.105MPa…

Q: An ideal diesel cycle powered by air has a compression ratio of 20. At the beginning of the…

A: An ideal diesel engine consists of 4 thermodynamic processes. The four processes involved are 1-2:…

Q: 3. Show that the thermal efficiency of the Carnct cycle in terms of the isentropic compression ratio…

A: ηcarnot=1-T1T2 rk=V1V2

Q: An iseal Brayton cycle has a pressure ratio of 6:1. The temperature of the air is 22 degrees celsius…

Q: An ideal air-standard Diesel cycle engine has a compression ratio of 18 and a cutoff ratio of 2. At…

Q: beginning of the compression process. If the compression rati 15 and the maximum temperature in the…

Q: ind the pressure and temperature at the end of adiabatic compression. 2. The compression ratio is 9.…

A: Given: (1) Compression ratio= 6:1 P1=101.3 kPa T1=20oC To determine: The final pressure and…

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

4. A Diesel cycle has a
temperature at the beginning of
the compression is 172.4°F . The
temperatures at the isentropic
expansion process are 3,263°F
and 1,250.6°F, respectively. If
the compression ratio is 15 and
the pressure at the beginning of
the compression is 2,116.8 psf,
find the cut-off ratio and the
thermal efficiency of the cycle.
Assume y = 1.4.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 2 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

3.In a standard Brayton cycle, the heat added is 20kW while the heat rejected is 8kW. Find the pressure ratio and compression ratio.
2. A Diesel cycle has an initial temperature of 27°C. If the cut-off ratio is 2.50 and compression ratio is 12, Find the maximum cycle temperature.
Solve the Problem. Submit your solution with the problem with the submission area. Consider an ideal air-standard diesel cycle in which the state before the compression process is 95 kPa, 290 K, and the compression ratio is 20. Find the maximum temperature (by iteration) in the cycle to have a thermal efficiency of 60%?
H4.
Show modifications a reversed Carnot cycle needs to act as a theoretical vapor compression cycle. Show the process on TS- diagram.
A four-cylinder compression-ignition engine with a compression ratio of 18 haspistons with a bore of 9 cm and a stroke of 10 cm. The air pressure at the beginning ofcompression is 98 kPaa, and the temperature is 37 oC. The engine may be modeled bythe air-standard Diesel cycle. The maximum cycle temperature is 1700 oK. If the engineproduces 75 kW of power, determine a) the heat supplied per cylinder; b) the thermalefficiency; and c) the rpm required.
A gasoline internal combustion engine can be modeled by an ideal Otto cyclethat has a compression ratio of 8.91. At the beginning of the compression process (state 1), airis at 100 kPa and 300 K. The heat transfer into the air during the constant-volume heat additionprocess (state 2 to 3) is 693.08 kJ/kg. Note: Consider constant specific heats of air at 300 K. 1 – Find the temperature in K before heat additionprocess ;A) 660 KB) 680 KC) 700 KD) 720 K 2 – Find the maximum temperature in K during thecycle A) 1625 KB) 1655 KC) 1685 KD) 1715 K3 – Find the maximum pressure in MPa during the cycle A) 4 MPaB) 4.5 MPaC) 5 MPaD) 5.5 MPa4 – Find the temperature in K before the heat rejection processA) 660 KB) 700 KC) 740 KD) 780 K
An otto cycle has a compression ratio of 8. Find the pressure ratio during compression.
A Carnot cycle operating on 2kg of methane, have the following properties given at the beginning of isothermal expansion, P=2060 kPaa, T=270oC. The ratio of the isothermal expansion is 1.8 and the isentropic compression is 7.2. Find the pressure at each corner of the cycle.
A diesel cycle has a compression ratio of 8 and an initial temperature of 34oC. If the maximum temperature of the cycle is 2000 K, fi D the cycle efficiency.
5. (a) If the compression ratio of an engine working on Otto cycle isIncreased from 5 to 7, find the percentage increase in thermalefficiency. (b) Derive an expression for thermal efficiency of ideal Brayton cycle.(c) In an engine working on the ideal Otto cycle, the pressure and temperature at the beginning of compression are 100 kPa and 40 °C respectively. The ratio of specific heat capacities is 1.4. If the airstandard efficiency of the engine is 50%, determine(i) The compression ratio. (ii) The pressure and temperature at the end of adiabaticcompression. (6a) Explain and discuss in your own words, the following three concepts incombustion: stoichiometric mixture of air and fuel, weak mixture and richmixture. Explain their importance in combustion applications.(6b) A gas fuel has the following volumetric composition:Propane C3H8: 73 %Butane C4H10: 5 %Ethane, C2H6: 3%Nitrogen N2: 19%(i) Write out the complete combustion equations for all the combustible constituents individually.…
1.)An ideal otto cycle has a compression ratio of 9..A t the beginning of compression,air is at P1=14.4psia,V1=12ft3 and T1=80 degrees Fahrenheit …At the end of Isometric heat addition process the pressure of air is 936.3177psia… Determine: a.)Find the Pressure after isentropic expansion process in psia? Solution: Answer:______________________________ b.)Find the temperature in degrees Fahrenheit at the beginning of Isometric heat rejection process? Solution: Answer:______________________________ c.)Find the heat added in the cycle in Btu? Solution: Answer:______________________________ d.)Find the heat rejected in the cycle in Btu? Solution: Answer:______________________________