ENVS 137 Chapter Notes - Chapter 14: Energy Conversion Efficiency, Kern River Oil Field, Renewable Energy
13 Dec 2016
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How much oil is actually available is determined by the technologies that are available to extract it and the cost of applying these to the relative price of the resource . Primary energy - energy contained in natural resources(e. g. coal, oil, sunlight, uranium) ^can be changed into other forms of energy through process of energy conversion. Secondary energy - primary forms of energy (oil) converted to secondary. End use - the final application of energy (ex. 2nd law of thermodynamics - no energy conversion is 100% efficient (lost as heat) Energy conversion efficiency - the percentage of primary source energy that is (electricity, kinetic energy of car) captured in a secondary form of energy (ex. Coal burned for electricity - 70% lost as heat. Therefore efficiency of the conversion from chemical to electrical energy = only 30%) Energy end-use efficiency - the product of the efficiencies of all the energy conversions from the primary source to the end use (ex.
