Carnot cycle: In TQ 9 of Unit

In TQ 9 of Unit 7, you have obtained expression for the work done in Carnot cycle depicted on an indicator diagram. We will extend this result to calculate the efficiency of Carnot engine and show that no engine can be more efficient than a Carnot engine. As mentioned earlier, thermodynamics is a phenomenological science and its laws need no proof. In fact, the second law of thermodynamics has been stated in two different but equivalent forms by Kelvin-Planck and Clausius. You will learn ... 5. Carnot theorem is a principle that limits the maximum efficiency for any possible engine. The efficiency solely depend Carnot's theorem states: All irreversible heat engines between two heat reservoirs are less efficient than a Carnot engine operating between the same reservoirs. ually efficient with a Carnot e ηmax = ηCarnot = 1−Tc / TH ... The Carnot cycle was first developed in the year 1824 by a French physicist named Sadi Carnot. It is an ideal cycle that basically laid the foundation for the second law of thermodynamics. The Carnot cycle also brought up the concept of reversibility. Action of a Carnot cycle: The Carnot cycle shown in Fig. is a clockwise cycle. So the work done due to this cycle is positive and the area abcd of the cycle on the p-V diagram indicates this work (W). The two process b → c and d → a are adiabatic, i.e., in these two processes no heat exchange takes place with the surroundings. Again, the process a → b is an isothermal expansion. So the gas takes up heat Q 1 from the source at higher temperature T 1. On the other hand, the process c → ...