We observed that the difference of temperature can produce electric, which means heat/thermal energy can transfer to electric energy.
This is the prediction that we switch the temperature of the two bars and obserserve what will happen. The result is that it still produces electric energy, but rotates with opposite direction.
We derive the molar capacity when the volume remains constant.
We derive the molar capacity when the pressure remains constant.
In the adiabatic process, we express the product of temperature change and mold amount in terms of change of pressure and the 2 heat capacity.
By set up the integral, we got a formula of work done by a system which is only applied in adiabatic process, and we used it to solve a question.
We have a engine cycle, by the given process and the formula we have, we can have the heat change, internal energy change and work done of each process. In the end, we can solve for the efficiency.
We are shown a model of how modern engines works.
In the end, we list some methods to improve the efficiency of engines
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