Homework Help: physic

Posted by John on Friday, May 13, 2011 at 9:29am.

A Carnot engine takes an amount of heat QH = 113 J from a high-temperature reservoir at temperature TH = 1170°C, and exhausts the remaining heat into a low-temperature reservoir at TL = 13.3°C. Find the amount of work that is obtained from this process

physic - drwls, Friday, May 13, 2011 at 11:46am
First, convert temperatures to absolute units.
TH = 1443 K
TL = 286.5 K
Carnot Efficiency =
Wout/Qin = (Qin - Qout)/Qin
= 1 - (Tc/Th) = 0.802

Work out = (efficiency)*113 = 90.6 J

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