The figure shows a PV diagram similar to the cycle of a Diesel engine. It consists of two adiabatic steps (a→b) and (c→d), a constant pressure step (b→c) and a constant volume step (d→a). We are interested in the efficiency, assuming the engine uses a diatomic (f = 5) ideal gas. a) For each of the four steps, state what type of process it is and the sign (+,-,or 0) of the work W, the heat Q, and the internal energy change AU. Туре sign of W sign of AU sign of Q Step a➜b b→c c→d d→a b) Express the engine efficiency in terms of the heat input |Qin and the exhausted heat Qout. c) What is the isobaric heat capacity of n mole of a diatomic ideal gas? b adiabat C adiabat d a
The figure shows a PV diagram similar to the cycle of a Diesel engine. It consists of two adiabatic steps (a→b) and (c→d), a constant pressure step (b→c) and a constant volume step (d→a). We are interested in the efficiency, assuming the engine uses a diatomic (f = 5) ideal gas. a) For each of the four steps, state what type of process it is and the sign (+,-,or 0) of the work W, the heat Q, and the internal energy change AU. Туре sign of W sign of AU sign of Q Step a➜b b→c c→d d→a b) Express the engine efficiency in terms of the heat input |Qin and the exhausted heat Qout. c) What is the isobaric heat capacity of n mole of a diatomic ideal gas? b adiabat C adiabat d a
Related questions
Question
The first three problems
Transcribed Image Text:РА
The figure shows a PV diagram similar to the cycle of a Diesel
engine. It consists of two adiabatic steps (a→b) and (c→d), a
constant pressure step (b→c) and a constant volume step (d→a).
We are interested in the efficiency, assuming the engine uses a
diatomic (f = 5) ideal gas.
a) For each of the four steps, state what type of process it is and
the sign (+,-,or 0) of the work W, the heat Q, and the internal
energy change AU.
Туре
sign of W
Step
a→b
sign of AU
sign of Q
b→c
c→d
d→a
b) Express the engine efficiency in terms of the heat input |Qin and the exhausted heat |Qout.
c) What is the isobaric heat capacity of n mole of a diatomic ideal gas?
d) Use your table to identify the steps where heat enters the engine and where heat is exhausted and
calculate the efficiency. Your result for the efficiency should only contain temperature differences
and numbers.
adiabat
adiabat
d
a
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
