Uses of Carnot Cycle:
1. It helping us to appreciate what factors is desirable in the design of practical cycle; namely a maximum possible temperature range.
1 maximum possible heat addition into cycle at maximum cycle temperature
2 a minimum possible work input into the cycle.
2. The Carnot cycle helps to understand the thermodynamic constraints on design of cycles. For instance, even if such a plant were practicable and even if the maximum cycle temperature could be
900K the cycle thermal efficiency would be well below 100 percent. This is called as Cartrot lintitation.
A hypothetical plant operating on this type of cycle would have plant efficiency lower than this owing to the inefficiencies of individual plant items.