19 A historic single-cylinder engine with a mechanical efficiency n = 5% operates at 140 RPM on the Lenoir cycle shown in Fig. 21. The cylinder has a double acting piston with a 12-in. bore and a 36-in. stroke. The fuel has a heating value Quy = 12,000 BTU/bm and is used at an air-fuel ratio AF = 18. Combustion occurs at constant volume half way through the intake-power stroke when cylinder conditions equal 70°F and 14.7 psia.

19 A historic single-cylinder engine with a mechanical efficiency n = 5% operates at 140 RPM on the Lenoir cycle shown in Fig. 21. The cylinder has a double acting piston with a 12-in. bore and a 36-in. stroke. The fuel has a heating value Quy = 12,000 BTU/bm and is used at an air-fuel ratio AF = 18. Combustion occurs at constant volume half way through the intake-power stroke when cylinder conditions equal 70°F and 14.7 psia.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Section: Chapter Questions

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Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

19 A historic single-cylinder engine with a mechanical efficiency n = 5% operates at 140
RPM on the Lenoir cycle shown in Fig. 21. The cylinder has a double acting piston with a
12-in. bore and a 36-in. stroke. The fuel has a heating value QHV = 12,000 BTU/bm and
is used at an air-fuel ratio AF = 18. Combustion occurs at constant volume half way
through the intake-power stroke when cylinder conditions equal 70°F and 14.7 psia.
Engine Cydes
Calculate:
(a) Temperature at each state of cycle. ['F]
(b) Pressure at each state of cyde. [psia]
(c) Indicated thermal efficiency. [%]
(d) Brake power. [hp]
Engine Cydes
Calculate:
(a) Temperature at each state of cycle. ['F]
(b) Pressure at each state of cyde. [psia]
(c) Indicated thermal efficiency. [%]
(d) Brake power. [hp]
(e) Average piston speed. [ft/sec]

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