The Laws of Thermodynamics: Heat-Engine Lab

Pick the hot and cold temperatures and the heat you feed in. The first law balances the energy; the second law caps the work you can ever get back out.

Hot reservoir T_h600 K

Cold reservoir T_c300 K

Heat supplied Q_h2000 J

Max efficiency η

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Max work W

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Waste heat Q_c

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Entropy gen. ΔS

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η = 1 − T_c / T_h · W = η·Q_h · Q_c = Q_h − W