A large gasoline engine uses a heat output equal to 10,000 J to perform work equal to 2,000 J per cycle. The engine runs at 25 cycles per second. The heat is obtained by burning petrol. The heat of combustion for petrol is 50 J/ g. 1. Calculate the Carnot efficiency of the engine. 2. What is the amount of heat given off to the environment per cycle? 3. How much work is done per second? 4. Calculate the amount of petrol that must be burned in 45 minutes?

A large gasoline engine uses a heat output equal to 10,000 J to perform work equal to 2,000 J per cycle. The engine runs at 25 cycles per second. The heat is obtained by burning petrol. The heat of combustion for petrol is 50 J/ g. 1. Calculate the Carnot efficiency of the engine. 2. What is the amount of heat given off to the environment per cycle? 3. How much work is done per second? 4. Calculate the amount of petrol that must be burned in 45 minutes?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.75P: Referring to Problem 1.74, how many kilograms of ice can a 3-ton refrigeration unit produce in a...

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