Here’s a very simple explanation of the Carnot cycle without any equations:
- The Carnot cycle is a perfect, ideal engine cycle that shows the maximum possible efficiency.
- It works between a hot source and a cold sink.
Four steps of the cycle:
- Gas expands slowly and absorbs heat from the hot source.
- Gas continues to expand without gaining or losing heat, and its temperature drops.
- Gas is compressed slowly, releasing heat to the cold sink.
- Gas is compressed more without heat exchange, and its temperature rises back to the starting point.
Key idea:
- This cycle is reversible, and no real engine can be more efficient than a Carnot engine.
- It helps us understand how heat engines, refrigerators, and heat pumps work in the best possible way.