Questions from Thermal Fluid Science


Q: Reconsider Prob. 9–54. Using appropriate software, study

Reconsider Prob. 9–54. Using appropriate software, study the effect of varying the compression ratio from 14 to 24. Plot the net work output, mean effective pressure, and thermal efficiency as a funct...

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Q: A four-cylinder, two-stroke 2.4-

A four-cylinder, two-stroke 2.4-L diesel engine that operates on an ideal Diesel cycle has a compression ratio of 22 and a cutoff ratio of 1.8. Air is at 70°C and 97 kPa at the beginning of the compre...

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Q: Repeat Prob. 9–56 using nitrogen as the working fluid

Repeat Prob. 9–56 using nitrogen as the working fluid. Data from Prob. 9-56: A four-cylinder, two-stroke 2.4-L diesel engine that operates on an ideal Diesel cycle has a compression ratio of 22 and a...

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Q: An air-standard dual cycle has a compression ratio of 20

An air-standard dual cycle has a compression ratio of 20 and a cutoff ratio of 1.3. The pressure ratio during the constant volume heat addition process is 1.2. Determine the thermal efficiency, amount...

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Q: Repeat Prob. 9–58E if the compression ratio is reduced

Repeat Prob. 9–58E if the compression ratio is reduced to 12. Data from Prob. 9-58: An air-standard dual cycle has a compression ratio of 20 and a cutoff ratio of 1.3. The pressure ratio during the c...

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Q: How would you define a system to determine the temperature rise created

How would you define a system to determine the temperature rise created in a lake when a portion of its water is used to cool a nearby electrical power plant?

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Q: What does the area enclosed by the cycle represent on a P

What does the area enclosed by the cycle represent on a P-v diagram? How about on a T-s diagram?

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Q: What four processes make up the simple ideal Brayton cycle?

What four processes make up the simple ideal Brayton cycle?

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Q: For fixed maximum and minimum temperatures, what is the effect of

For fixed maximum and minimum temperatures, what is the effect of the pressure ratio on (a) the thermal efficiency and (b) the net work output of a simple ideal Brayton cycle?

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Q: What is the back work ratio? What are typical back work

What is the back work ratio? What are typical back work ratio values for gas-turbine engines?

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