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EGR 102 Introduction to Engineering Modeling
Lab 02B Homework
You wish to predict the power and profit produced by a wind turbine.
The efficiency of
the wind turbine fluctuates based on the incoming wind speed, as shown below:
Wind Speed (m/s)
Efficiency
0 ≤
v
< 5
18 %
5 ≤
v
< 8
24 %
8 ≤
v
< 13
32 %
13 ≤
v
≤ 15
12 %
Build an Excel spreadsheet to calculate the power produced by this turbine. Create 16
cases by varying the wind speed from
0
to
15 m/s
in
1 m/s
increments. The power
generated,
P (kW)
, may be calculated from the efficiency,
E
(in decimal form), the
diameter of the turbine blades,
D (m)
, the density of the air,
ρ (kg/m
3
)
, and the speed of
the incoming wind,
v (m/s)
:
± ² ³ [
´
µ
³ ¶
·¸¸¸
] ³ ¹
º
³ »
Initially, use a turbine blade diameter of
20 m
, and air density of
1.15 kg/m
3
. Also,
calculate the monetary profit from selling the electricity over a 1year period for each
case. Assume a market rate of
$0.09/kWh
of electricity (Hint: There are 8760 hours in
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This note was uploaded on 04/02/2012 for the course EGR 100 taught by Professor Hinds during the Fall '08 term at Michigan State University.
 Fall '08
 HINDS

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