fistlawStirlingEngine

- The First Law and the Stirling Cycle Recall the expression for the First Law for a process of a closed system in terms of intensive variables

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The First Law and the Stirling Cycle. Recall the expression for the First Law for a process of a closed system in terms of intensive variables: u 12 = q 12 w 12 We have shown previously that the work for a process is given by = 2 1 12 pdv w where p must be expressed as a function of v . We have just shown that the change in internal energy is given by: ( 29 T c T T c dT c du u v v v = - = = = 1 2 2 1 2 1 12 We can now evaluate the heat transfer for a process. From the First Law we write + = + = 2 1 2 1 12 12 12 pdv dT c w u q v Recall the Stirling cycle and the work calculations for each process: 1 p v 1 2 3 4 1 2 p v v 1 = v 4 v 3 = v 2 Cooling at constant volume. w 41 = 0 Heating at constant volume. w 23 = 0 Isothermal compression Isothermal expansion
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Calculate the heat transfer for each process and the cycle as a whole. Assume a constant specific heat. Recall again
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This note was uploaded on 07/21/2011 for the course EML 3100 taught by Professor Staff during the Summer '10 term at FSU.

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- The First Law and the Stirling Cycle Recall the expression for the First Law for a process of a closed system in terms of intensive variables

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