HW7 - a and h out,a are the actual work input and exit...

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ENGR 301 F2009 HW 7 Due on Monday, November 23, 2009. Note: Isentropic efficiency of an adiabatic turbine = (h in – h out,s ) / (h in – h out,a ) = w s / w a Where w s and h out,s are the work output and exit stream enthalpy under isentropic (i.e. reversible adiabatic) conditions, w a and h out,a are the actual work output and exit stream enthalpy of the irreversible adiabatic turbine. Isentropic means s in = s out . Isentropic efficiency of an adiabatic compressor = (h out,a – h in ) / (h out,s – h in ) = w a / w s Where w s and h out,s are the work input and exit stream enthalpy under isentropic (i.e. reversible adiabatic) conditions, w
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Unformatted text preview: a and h out,a are the actual work input and exit stream enthalpy of the irreversible adiabatic compressor. The isentropic compression work input, w s , is equal to (h out,s – h in ) = dP out in ∫ υ Since liquids are incompressible, ) P-(P w in out s υ = where υ is specific volume of liquid at inlet temperature. The actual compression work input, w a , is equal to (h out,a – h in ). Do the following problems for the homework : Problem 7-30, 7-35, 7-39, 7-52, 7-59, 7-63, 7-73, 7-115, 7-128, 7-135...
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This note was uploaded on 11/25/2009 for the course ENGR thermo taught by Professor Staff during the Spring '09 term at University of Louisiana at Lafayette.

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