8) One of the most efficient engines built so far has the following characteristics: The combustion chamber temperature is 1900°C, the exhaust temperature = 430°C, 7.0 × 10° cal of fuel produces 1.4 x 10° J of work in one hour. (1 cal = 4.186 J) (a) What is the actual efficiency of this engine? calc nona (b) What would be the maximum possible efficiency for an engine using the same temperature extremes?

8) One of the most efficient engines built so far has the following characteristics: The combustion chamber temperature is 1900°C, the exhaust temperature = 430°C, 7.0 × 10° cal of fuel produces 1.4 x 10° J of work in one hour. (1 cal = 4.186 J) (a) What is the actual efficiency of this engine? calc nona (b) What would be the maximum possible efficiency for an engine using the same temperature extremes?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter15: Thermodynamics

Section: Chapter Questions

Problem 31PE: Steam locomotives have an efficiency of 17.0% and operate with a hot steam temperature of 425C. (a)...

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