Physics 202 Lecture 6 Thermodynamics.

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Physics 202 Lecture 6 Thermodynamics

The first law: a heat engine balances internal energy, heat and work http://www.onorbit.com/node/2655 http://www.avogadro-lab-supply.com/item.php?item_id=476&category_id=87

The ideal gas provides the simplest system to consider in thermodynamics http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/idegas.html

Work done by an ideal gas within isothermal and adiabatic process can be calculated

The Carnot heat engine is reversible and is therefore the upper bound on efficiency

Another perspective on entropy: energy irreversibly lost to mechanical work http://www.pyroworks.co.nz/services/special_effects.shtml

Any decrease in system entropy must come from a larger increase somewhere else

Practical questions about the most efficient use of global energy is challenging http://en.wikipedia.org/wiki/Energy_in_the_United_States

Nearly all electricity generated in the US comes ultimately from steam engines http://en.wikipedia.org/wiki/Energy_in_the_United_States http://newenergyandfuel.com/wp-content/uploads/2008/11/steam-generation-layout.gif http://www.whatisnuclear.com/articles/nucreactor.html http://en.wikipedia.org/wiki/Rankine_cycle