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(Solved): (44pts) Air of mass m in a piston cylinder assembly undergoes a Carnot power cycle. Heat is received ...
(44pts) Air of mass m in a piston cylinder assembly undergoes a Carnot power cycle. Heat is received
at temperature T_(1) and rejected at T_(3). At the beginning of the heat addition process the pressure is P_(1), and
during this process the volume increases by a factor of 4 . Assume the air behaves as an ideal gas with known
and constant specific heats and gas constant R.
Known: m,T_(1),P_(1),T_(3),A(A_(2))/(A)A_(1)=4,c_(p),c_(v),R
Engineering Model:
Analysis:
a. Sketch the cycle on P-v and T-s diagrams (See Directions. Indicate all states and processes).
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b. Evaluate the thermal efficiency of the cycle:
c. Evaluate the heat input from high temperature source (in terms of known quantities).
d. Evaluate the net work output of cycle (in terms of known quantities).