Good presentation. This example appears to illustrate a cold air-standard Otto cycle, which assumes a constant specific heat. Modeling as an air-standard Otto cycle yields a slightly different result. The thermal efficiency (cold-air standard only) also can be calculated from eta = 1 - (T1 / T2)
This feels like one of those classes where you're desperately trying to write down the notes, and then the teachers erases them XD Must admit, I did completely understand it
its amzing how hard it is to find a good example problem worked on this one was so close until totally ignores the k in the first equation. please remind me WHERE THAT COMES FROM!!!!!
Eric Jones if you have a textbook handy, check the back appendix for "Ideal gas specific heats of various common gases", and look under "air" for the k value.