# Solar vs Wind Concept Generation

Document Sample

```					                                                        Power Generated vs Month
130
Wind Power
120                               Solar Power

110

100
Power (Wh) per Day

90

80

70

60

50

40

30
0    2           4           6            8         10   12
Month

Solar

                   Using historical data of the average sun hours per day per month
                   Assume sun intensity is peak throughout this time (overestimate)
                   Assume 1kW/m2, 1 m2 area
                   20% efficiency (material average)
                   Rochester at 45® lattitude
                   Formula:

Wind

    Using historical data of average wind speed per month, average humidity per month, and
average temperature per month
Scope

height                                        In1

Constant                                       In2                                air_density                                    0.5*u*A*v^3*Cd*Ng*Nm                      power

temperature                                      In3                                                                                                                      To Workspace
Calculate Air Density
Constant1                                                                                                                            Power Generated

humidity

Constant2

Scope5                                                                                                                             Scope                     Scope3
1                                                                                                            po*(1-L*u/To)^(g*M/(R*L))                                         absolute_pressure
absolute_pressure

vapor_pressure            u(1)/(R_dry*u(3))+u(2)/(R_vapor*u(3))                   1.air_density
air_density

Air Pressure                                               signal3
f(height above sea-level)
Scope6                                                             Scope2
Air Density

2        6.1078*10^((7.5*u-2048.625)/(u-35.85))                   sat_pressure
sat_pressure

u(2)*u(1)                                                                                                                                 Scope4
v apor_pressure

Saturation Vapor Pressure
signal2
f(Temp)
Vapor Pressure
f(humidity)

Scope1
3

Scope7

Final Straw:

Since our project must be tested throughout the winter, we have concluded that wind power
generation is the most efficient and realistic to suit our customer needs. It is more reliable in general, is
not affected by inclement weather and cannot be “covered” by precipitation. Wind may be present at all
times of day, as opposed to sun being available only during the sun hours. In addition, the solar power
was clearly an overestimate; not taking into account sun angle at different times of day.

```
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
 views: 1 posted: 11/6/2012 language: Unknown pages: 2
How are you planning on using Docstoc?