An ideal Diesel cycle operates with a compression ratio of 14 and a cutoff ratio of 2.1. At the beginning of the compression process, the air is at 14.8 psia and 73°F. Accounting for variable specific heats with temperature, determine: the maximum temperature during the cycle °F the maximum pressure during the cycle psia the specific net work output Btu/lbm

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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An ideal Diesel cycle operates with a compression ratio of 14 and a cutoff ratio of 2.1. At the beginning of the compression process, the air
is at 14.8 psia and 73°F.
Accounting for variable specific heats with temperature, determine:
the maximum temperature during the cycle
°F
the maximum pressure during the cycle
psia
the specific net work output
Btu/lbm
the mean effective pressure (MEP) for the cycle
106.07
psia
the thermal efficiency
53.7
%
What is the thermal efficiency of this Diesel cycle if the cold-air standard assumption is used?
%
Transcribed Image Text:An ideal Diesel cycle operates with a compression ratio of 14 and a cutoff ratio of 2.1. At the beginning of the compression process, the air is at 14.8 psia and 73°F. Accounting for variable specific heats with temperature, determine: the maximum temperature during the cycle °F the maximum pressure during the cycle psia the specific net work output Btu/lbm the mean effective pressure (MEP) for the cycle 106.07 psia the thermal efficiency 53.7 % What is the thermal efficiency of this Diesel cycle if the cold-air standard assumption is used? %
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