Show complete solution and illustration please. A dual combustion cycle operates with acompression ratio of 12 and with a cut-off ratio of1.615. The maximum pressure is 52.17 bar. Thepressure and temperature before compressionare 1 bar and 62 C, respectively. Assumingindices of compression and expansion of n =1.35, calculate the temperature at cardinalpoints, the cycle efficiency and the meaneffective pressure.

Answered: Image /qna-images/answer/50adcf33-6177-4b39-8845-cb842a2424c2.jpg

Answered: A dual combustion cycle operates with a…

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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Show the complete solution with cancellation of units.
Derive the formula of efficiency of the following: Dual Combustion Cycle in terms of pressure ratio rp, cutoff ratio rc, specific heat ratio k and compression ratio r. C.
A diesel cycle with air as the working fluid has a compression ratio of 20. The temperature and pressure in the first process is 20°C, 95kPa and the highest attainable temperature is 1927°C. The air standard assumptions are applicable, both Kinetic and Potential energy are negligible. The mass/mass flow rate is negligible. Use the standard constants for air (Cp, Cy. R, and k). Determine the amount of heat transferred and rejected, the net work and thermal efficiency, and the mean effective pressure.
4
In a dual combustion cycle, the maximum temperature is 2000 deg. C and the pressure ratio is 1.6. The temperature and pressure at the start of compression are 1 bar and 17 deg. C respectively. The compression ratio is 18:1. Assuming varying heat capacities, calculate the cycle efficiency.
The stroke and cylinder diameter of a compression ignition engine are 250 mmand 150 mm respectively. If the clearance volume is 0.0004 ?^3 and fuelinjection takes place at constant pressure for 5 per cent of the stroke determinethe efficiency of the engine. Assume the engine working on the diesel cycle.
A 4 cylinder, 4 liter compcompression-ignition engine operates on the air standard dual cycle. It uses light duel fuel at air fluid ratio of 18. The compression ratio of the engine is 16:1 and cylinder bore diameter is 10cm. At the start of the compression state, conditions in the cylinders are 60°C and 100kPa with a 2% exhaust residual. It can be assumed that half of the heat input from combustion is added at constant volume and half at constant pressure. Calculate: 1. Temperature and pressure at each state of the cycle. 2. Indicated thermal efficiency 3. Exhaust temperature 4. Air temperature in intake manifold 5. Engine volumetric deficiency
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(17 blanks) Calculate the efficiency of the Carnot Engine for ideal gas. Consider the figure below for a complete cycle of Carnot engine, where the cycle goes from ad->ab->bc->cd
Air enters an ideal gas turbine cycle at 1 bar and 27 C. The maximum temperature in the cycle is 727 C. Find the cycle efficiency for a compression ratio of 10. [Ans.: 0.482].
An air-standard Spark Ignition cycle has a compression ratio of 10.2. Air is at 3000°R at the end of the heat addition process. Neglecting the variation of specific heats with temperature, determine the following:a. Net output work of the cycleb. Heat rejection per unit mass, Btu/lbc. Thermal efficiency of the cycle(%). Compare this efficiency value if the cycle has to run on an air standard Carnot Cycle.

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