11.108IA diesel engine has a compression ratio of 20:1 with an inlet of 95 kPa, 290 K,state 1, with volume 0.5 L. The maximum cycle temperature is 1800 K. Find themaximum pressure, the net specific work and the thermal efficiency.Solution:Compression process (isentropic) from Eqs.8.33-34T₂ T₁(v₁/v₂)k-1-290 x 2004-961 K1.4.P₂=95x(20)-1W2U₂-U₁ Co( T₂-T₁)-0.717 (961-290)-481.1 kJ/kgCombustion at constant P which is the maximum presssure=6297.5 kPa; V₂v₁/20=RT₁/(20 P₁) = 0.043805P3-P₂-6298 kPa; V3 V₂ T3/T2-0.043805 x 1800/961 -0.082052W3 P (V3-V₂) 6298 x (0.08215-0.043805)-241.5 kJ/kg293U3-U2+2W3=h3-h2=Cpo(T3-T₂)-1.004(1800-961)=842.4Expansion process (isentropic) from Eq.8.33T4 T3(V3/V4)04-1800 (0.08205/0.8761) 0.4-698 KAP3W4 U3-U4 Co(T3-T4)=0.717 (1800-698)-790.1 kJ/kgCycle net work and efficiencyW,net 2W3+3W4+ 1W2=241.5 +790.1-481.1=550.5 kJ/kgn-Wnet/9H-550.5/842.4-0.653ATNA

To find: The maximum pressure, net work, and thermal efficiency. Given: The compression ratio is…

A diesel engine has a compression ratio of 20:1 with an inlet of 95 kPa, 290 K, state 1, with volume 0.5 L. The maximum cycle temperature is 1800 K. Find the maximum pressure, the net specific work and the thermal efficiency.

A diesel engine has a compression ratio of 20:1 with an inlet of 95 kPa, 290 K, state 1, with volume 0.5 L. The maximum cycle temperature is 1800 K. Find the maximum pressure, the net specific work and the thermal efficiency.

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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