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Unformatted text preview: p – v diagram. Evaluate the Clausius integral H δ Q / T ) b for the Carnot cycle. What is maximum efﬁciency of a Ocean Temperature Energy Conversion Plant operating between 27 ◦ C (surface) and 7 ◦ C (700 m depth)? The current efﬁciency of actual plants is about 2%. Comment. 2 3 (10 points) Air in a piston-cylinder assembly undergoes a thermodynamic cycle consisting of three internally reversible processes in series. Process 1–2: Constant volume-heating from T 1 = 288 K, p 1 = . 1 MPa to p 2 = . 42 Mpa. Process 2–3: Constant-pressure cooling. Process 3–1: Isothermal heating to the initial state. Employing the ideal-gas model with c p = 1 kJ/kg · K, evaluate the change in speciﬁc entropy, in kJ/kg · K, for each process. Sketch the cycle on p – v and T – s coordinates. For each process, associate work and heat transfer with areas on these diagrams, respectively. 3...
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This note was uploaded on 04/01/2009 for the course MAE mae 110a taught by Professor ? during the Fall '07 term at UCSD.
- Fall '07