Page 159 - Renewable Energy Devices and System with Simulations in MATLAB and ANSYS

146 Renewable Energy Devices and Systems with Simulations in MATLAB and ANSYS ®
®

400
Energy yield per month
350

300
Energy yield (kWh) 200
250

150

100

50
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

FIGURE 6.9 Energy production values shown for each month of the year calculated for the 10 panel instal-
lation given in Table 6.8.

TABLE 6.9
Calculated Total Energy and Performance Ratio for Each
Month Separately for the 10 Panel Installations
Month Energy Yield (kWh) Performance Ratio (%)
Jan 54 82
Feb 89 85
Mar 222 88
Apr 319 88
May 368 86
Jun 344 85
Jul 341 85
Aug 298 85
Sep 253 86
Oct 174 86
Nov 75 84
Dec 51 82

Source: S. GmbH, Sunny design web, 2015, available: http://www.sunny
designweb.com/sdweb/#/Home.

The resistance R of the cable can be calculated as
l
δ
R =⋅ (6.11)
S
where
δ is the resistivity of the material conductor: 0.023 for copper and 0.037 for aluminum (ambient
2
temperature = 25 °C) in (Ω⋅mm /m )
l is the length of the cable in meters (m)
2
S is the cross section of the cable in (mm )