Note regarding solutions for Homeworks 3 and 4:
Most thermodynamic books use something like y or y1 to represent
fractions of the working fluid flow. On the other hand, the textbook I used
& to refer to both
for years for this course (now out of print) us
Note regarding solutions for Homeworks 3 and 4:
Most thermodynamic books use something like y or y1 to represent
fractions of the working fluid flow. On the other hand, the textbook I used
& to refer to both
for years for this course (now out of print) us
Exam 1
1.
2.
Most Rankine cycle plants have only one open feedwater heater. (True)
In a closed feedwater heater, the pressure of the feedwater compared to the pressure of the steam extracted from the turbine must be: (the pressures of the two flows are
co
Homework 4
ME 406/506
1. An ideal Rankine cycle has a turbine inlet condition of T1 = 1000F and P1 = 2500 psia and a
condenser operating pressure of 1 psia. Determine the cycle efficiency for: (a) a cycle with
no feedwater heaters (b) a cycle with one opt
ME 406/506
Homework 2
1. A simple ideal Rankine cycle has a power output of 660 MW, a turbine inlet
condition of T1 = 1000F, P1 = 1800 psia and a condenser operating pressure of
P2 = 1.5 psia. Find: (a) the steam quality leaving the turbine, x2 (b) the cy
ME 406/506
Homework 1
1. One lbm of H2O fills a 2.3615 ft3 weighted piston and cylinder device at a temperature
of 400F. The device is then cooled to a temperature of 100F. Determine the final
pressure of the H2O in psia and its volume in ft3.
2. What is
ME 406/506
Homework 3
1.
A single reheat Rankine cycle has a turbine inlet state of P1 = 160 bars, T1 = 560C and a
reheat at P2 = P3 = 40 bars to a temperature of T3 = 560C. Turbine and pump efficiencies
are T = 90% and p = 80%. Find the cycle thermal eff
. a net: HITup: HHH
Mt: Ho
,_/_t Hw H2 _J_ t
1,;
GIVEN f l r
P2 :- I 5 p5. and Wm. (,w Ma 1 "
Fmb . ma 8; d3 .7, (Li M d) $908+
( '1 845
$u~t.- State 1 (54) TMHJO t - 9H8! _-. s = 157%]:3
X-wk 2 ' 3131) X2":- Y5 34:;IS7'19 017|
, s .