An engine undergoes a Diesel Cycle with the following conditions: air at the start of compression is at 100 kPa, 23 °C. The peak temperature in the cycle is 2200 K, and it is designed with a cutoff ratio of 2.5 in mind. Using cold air standard, calculate for the following: a. compression ratio (r) b. pressures, volumes, temperatures of all states (in kPa, m3, and K, respectively) and specific net work per cycle (kJ/kg) c. efficiency from work and heat values (%), and from the formula containing r, rc, and k (%)
An engine undergoes a Diesel Cycle with the following conditions: air at the start of compression is at 100 kPa, 23 °C. The peak temperature in the cycle is 2200 K, and it is designed with a cutoff ratio of 2.5 in mind. Using cold air standard, calculate for the following: a. compression ratio (r) b. pressures, volumes, temperatures of all states (in kPa, m3, and K, respectively) and specific net work per cycle (kJ/kg) c. efficiency from work and heat values (%), and from the formula containing r, rc, and k (%)
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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An engine undergoes a Diesel Cycle with the following conditions: air at the start of
compression is at 100 kPa, 23 °C. The peak temperature in the cycle is 2200 K, and it is designed with
a cutoff ratio of 2.5 in mind. Using cold air standard, calculate for the following:
a. compression ratio (r)
b. pressures, volumes, temperatures of all states (in kPa, m3, and K, respectively) and specific net work per cycle (kJ/kg)
c. efficiency from work and heat values (%), and from the formula containing r, rc, and k (%)
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Step 1: Introduction
VIEWStep 2: p-v & T-s diagram of diesel cycle
VIEWSolution
VIEWStep 3: Finding compression ratio
VIEWStep 4: Volume at initial state
VIEWStep 5: Findingg volume & pressure at state 2
VIEWStep 6: Finding volume , pressure & temperature at state 3
VIEWStep 7: Finding expansion ratio
VIEWStep 8: Finding temperature , volume & pressure at state 4
VIEWStep 9: Specific net work per cycle (kJ/kg)
VIEWStep 10: Finding efficiency using work & heat and using formula
VIEWStep by step
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