Solution Found!
An air-standard Otto cycle has a compression ratio of 6
Chapter 9, Problem 9.7(choose chapter or problem)
An air-standard Otto cycle has a compression ratio of 6 and the temperature and pressure at the beginning of the compression process are \(520^{\circ} \mathrm{R}\) and \(14.2 \mathrm{lbf} / \mathrm{in}^{2}{ }^{2}\), respectively. The heat addition per unit mass of air is 600 Btu/lb. Determine
(a) the maximum temperature, in \( {\circ} \mathrm{F}\).
(b) the maximum pressure, in \(\text { in lbf/in. }{ }^{2}\).
(c) the thermal efficiency.
(d) the mean effective pressure, in \(\text { in lbf/in. }{ }^{2}\)
Questions & Answers
QUESTION:
An air-standard Otto cycle has a compression ratio of 6 and the temperature and pressure at the beginning of the compression process are \(520^{\circ} \mathrm{R}\) and \(14.2 \mathrm{lbf} / \mathrm{in}^{2}{ }^{2}\), respectively. The heat addition per unit mass of air is 600 Btu/lb. Determine
(a) the maximum temperature, in \( {\circ} \mathrm{F}\).
(b) the maximum pressure, in \(\text { in lbf/in. }{ }^{2}\).
(c) the thermal efficiency.
(d) the mean effective pressure, in \(\text { in lbf/in. }{ }^{2}\)
ANSWER:Step 1 of 4
a) To solve this problem we will use the given temperatures 
From the ideal gas tables we can then interpolate the temperature 
We can then use the given heat 
From the internal energy 
