Example 85 from Moran + Shapiro
Note:
To use the vectorfunction "properties(vectorargument)":
A Rankine steam cycle with regeneration.
1 Select 7 contiguous cells in a row
(do not include the I column with ef)
2 enter "=properties(cells1:7)"
(ditto)
3 press CtrlShiftreturn
The vector argument should be a 7cell block containing 2 nonzero property values
other cells empty (or with values <= 0)
The ef column (I) is calculated by formula, not by function
Remember to anchor the dead state properties so the formula can be copied.
Note: properties must always be in the same order and units
Practice e.g. with the following:
degree C
kPa
m^3/kg
kJ/kg
kJ/kg
kJ/kg/K
no units
T
p
v
u
h
s
x
700
2500
Known bugs:
the programing with u as one of the given properties (as occurs in closed system situations) is yet to be finished.
(value of indx in the module)
excel does not differentiate between an empty cell and 0: this can be a problem for vapor quality
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This note was uploaded on 04/02/2012 for the course ECS 222 taught by Professor Staff during the Fall '08 term at Syracuse.
 Fall '08
 Staff

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