Looking over my study guide, I’m confused about the difference between net energy and efficiency. Is there a difference? As I understand it:
Net energy is the amount of energy available minus energy needed to extract/process/etc.
Efficiency is input= output/percent efficient.
Aren’t these definitions basically two different ways of saying the same thing–that the second law of thermodynamics ensures that heat will be lost in all reactions, thus input will never equal output, yet the degree to which energy is lost in the reaction varies?