The compression ratio of an air-standard dual cycle is 12 and a cutoff ratio of 1.3. The pressure ratio during the constant-volume heat addition process is 1.5. This cycle is operated at 100 kPa and 20°C at the beginning of the compression. By using the constant specific heats at room temperature, evaluate; (i) the maximum gas pressure; (ii) the maximum gas temperature; (ii) amount of heat added; and (iv) thermal efficiency.

The compression ratio of an air-standard dual cycle is 12 and a cutoff ratio of 1.3. The pressure ratio during the constant-volume heat addition process is 1.5. This cycle is operated at 100 kPa and 20°C at the beginning of the compression. By using the constant specific heats at room temperature, evaluate; (i) the maximum gas pressure; (ii) the maximum gas temperature; (ii) amount of heat added; and (iv) thermal efficiency.

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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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 compression ratio of an air-standard dual cycle is 12 and a cutoff ratio of 1.3. The
pressure ratio during the constant-volume heat addition process is 1.5. This cycle is
operated at 100 kPa and 20°C at the beginning of the compression. By using the
constant specific heats at room temperature, evaluate;
(i)
the maximum gas pressure;
(ii)
the maximum gas temperature;
(iii)
amount of heat added; and
(iv)
thermal efficiency.

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