Heat and Work
Two primary classes of thermodynamic cycles are power cycles and heat pump cycles. Power cycles are cycles which convert some heat input into a mechanical work output, while heat pump cycles transfer heat from low to high temperatures using mechanical work input. Cycles composed entirely of quasistatic processes can operate as power or heat pump cycles by controlling the process direction. On a pressure volume diagram or temperature entropy diagram, the clockwise and counterclockwise directions indicate power and heat pump cycles, respectively.
Read more about this topic: Thermodynamic Cycles
Famous quotes containing the words heat and/or work:
“And oh, I knew, I knew,
And said out loud, I couldn’t bide the smother
And heat so close in; but the thought of all
The woods and town on fire by me, and all
The town turned out to fight for me that held me.”
—Robert Frost (1874–1963)
“There are few things more difficult than to appraise the work of a man suddenly dead in his youth; to disentangle “promise” from achievement; to save him from that sentimentalizing which confuses the tragedy of the interruption with the merit of the work actually performed.”
—Ezra Pound (1885–1972)