Q52. In an ideal Diesel cycle the pressure and temperature at the beginning of theadiabatic compression are 99 kN/m? and 20 °C, respectively. The maximumpressure attained during the cycle is 4.5 MN/m? and the heat received duringthe cycle is 600 kJ/kg of gas. Take R=0.287 kJ/kgK and Cv= 0.717 kJ/kg K.Determine for the cycle:(a) The pressure, volume and temperature at cycle state points. (b) The heat received.(c) The thermal efficiency.(e) The mean effective pressure.(d) The work ratio.(f) The heat rejected.

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Answered: In an ideal Diesel cycle the pressure…

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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The working gas of a thermodynamic cycle is a diatomic gas (assume constant specific heats.) The gas originally starts at 100kPa, 4m 3 and 27° C. It undergoes a four-step process --- • Process A-B: The gas is compressed at constant temperature to one-quarter of its original volume. • Process B-C: The volume of the gas is then doubled at constant pressure. • Process C-D: The gas then undergoes an adiabatic expansion. • Process D-A: The gas then undergoes a constant volume process back to its original state a) Make a table of the temperature, pressure, volume, internal energy, enthalpy, entropy and quality factor (T, P, V, U, H & S) at the start of each process. b) Make a table of the change in internal energy, heat flow, work done, change in enthalpy, and change in entropy (AU, Q, W, AH & AS) during each leg of the cycle. c) Draw well-labelled P-V & T-S diagrams (indicating lines of constant temperature, heat flow, work, etc.) d) Calculate the thermal efficiency of the cycle.
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COMPLETE SOLUTION. FINAL ANSWER ARE IN ENGLISG SYSTEMS. DRAW A DIAGRAM IF NECESSARY. A gaseous Ammonia actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle, starting at the beginning of the isothermal expansion, are V1 = 12, V2 = 15, V3 = 330.25 and V4 = 264.20. Determine (a) the overall expansion ratio and (b) the thermal efficiency.
4) In a single plate clutch both sides are effective. The clutch transmits 10 Kw power. The maximum torque is 120 Nm, the maximum axial force should not be more that 100 KN/m2. The outer diameter of the clutch plate is 1.3 times of the inner diameter. Find out the axial load exerted by the spring and outer and inner diameters of the clutch plate.
The specific enthalpy at the end of the heat addition of the following Diesel cycle is: T| Take: Q23/m = 750 kJ/kg 4. 2.
An air standard gas turbine engine operates on an overall pressure ratio of 4 and between the temperature limits of 70 F and 1600 F. Assuming constant specific heats, evaluate the compressor work. The efficiencies of compressor and turbine are 0.82 and 0.92, respectively. (a) Assuming constant specific heats, evaluate the compressor work. (b) determine the turbine work (c) determine the thermal efficiencies. Show complete solution on a paper.
can you draw and schematic and t-s fiagram for this actual reheat rankine cycle State 1: Status: Saturated Liquid 30 kPa From Table A5 when ʋ1=ʋf = 0.001022 m3/kg h1=hf = 289.27 kJ/kg State 2a: Status: Compressed liquid P2s=PH= 6000 kPa h2a= 296.04 kJ/kg [ WP, ise= Wpact = State 3 Status: Superheated Steam P3=PH=6000kpa T3=Tmax= 550°C From Table 6A, When = 6000 kPa and =550 =3423.1 kJ/Kg =6.8826 kJ/Kg⸼K
Q2 a) For the Desal cycle, draw p-v and T-s diagrams and explain all thermodynamic processes of the cycle. Explain the work done and efficiency of the Desal cycle. b) Define the compression ratio and explain your answer by supported formula.
3) A three-process cycle uses 3 kg of air and undergoes the following processes: polytropic compression from state 1 to state 2, where 150 kPa, 3600K, 750 kPa, and n=1.2; constant-pressure cooling from state 2 to state 3; and constant-temperature heating from state 3 to state 1, thus completing the cycle. Sketch the cycle on a p-V and T-s diagrams and determine the total heat and net work of the cycle.
How to Calculate the thermal efficiency of 400 MWth PBMR.PBMR, Helium using Brayton Cycle

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