A Real (Non-Carnot) Heat Engine, Operating Between Heat Reservoirs at Temperatures

question 43

Short Answer

A real (non-Carnot) heat engine, operating between heat reservoirs at temperatures of 450 K and 270 K, performs 3.3 kJ of net work, and rejects 8.2 kJ of heat in a single cycle.
(a) What is the thermal efficiency of this heat engine?
(b) What is the maximum efficiency it could possibly have?

---

Definitions:

Totality Principle

A philosophical concept that considers the moral decisions based on the totality of circumstances, including all moral rules and principles.

Beneficence

An ethical principle that involves acting in the best interest of others by promoting their well-being.

Double Effect

A principle in ethics that allows actions which have both a positive effect and a harmful side effect, if the action itself is morally good or neutral, the good effect is intended, and the good outweighs the bad.

Perfect Duty

A moral obligation that must always be followed without exception.