Никола 2019, 5 май — Задача 5. Example 1

Задачи – 5 Май 2019г. · 5 май 2019 г.

Условие

A particular system is constrained to constant mole number and volume, so that no work can be done on or by the system. Furthermore, the heat capacity of the system is $C$, a constant. The fundamental equation of the system, for constant volume, is $S = S_0 + C\ln(U/U_0)$, so $U = CT$.

Two such systems, with equal heat capacities, have initial temperatures $T_{10}$ and $T_{20}$, with $T_{10} < T_{20}$. An engine is to be designed to lift an elevator (i.e., to deliver work to a purely mechanical system), drawing energy from the two thermodynamic systems. What is the maximum work that can be so delivered?

Решение

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Оригинал в Архива: astro-552019a.pdf