(b) Calculate the efficiency of a Carnot engine having a hot reservoir of boiling water and a cold reservoir of ice cold water.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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(a) Explain the concept of isentropic efficiency and develop a formula for it as
applied to turbines.
5.
(b) Calculate the efficiency of a Carnot engine having a hot reservoir of boiling
water and a cold reservoir of ice cold water.
(c) An engine working on the ideal Otto cycle, has a clearance volume of 0.03 m and
swept volume of 0.12 m. The pressure and temperature at the beginning of
compression are 100 kPa and 100 °C respectively. The ratio of specific heat
capacities is 1.4. If the pressure at the end of constant volume heat addition is
2500 kPa, calculate
3
(i)
The air-standard efficiency of the cycle
(ii) The temperatures at the key points of the cycle
Transcribed Image Text:(a) Explain the concept of isentropic efficiency and develop a formula for it as applied to turbines. 5. (b) Calculate the efficiency of a Carnot engine having a hot reservoir of boiling water and a cold reservoir of ice cold water. (c) An engine working on the ideal Otto cycle, has a clearance volume of 0.03 m and swept volume of 0.12 m. The pressure and temperature at the beginning of compression are 100 kPa and 100 °C respectively. The ratio of specific heat capacities is 1.4. If the pressure at the end of constant volume heat addition is 2500 kPa, calculate 3 (i) The air-standard efficiency of the cycle (ii) The temperatures at the key points of the cycle
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