As per prevous reports, households are identified by initials number
of panels tilt angle - orientation (e.g. SP-6-37-N = Simon Pockley - 6 panels
- 37o North). [NB. To
print - use Landscape format]. Graph #1 shows system outputs beside the number of
generating hours for the last fortnight.
Graph #1. Comparison of system performance 31st
Mar 13th Apr 2009 (ranked by tilt angle)
Graph #2 plots the
output per panel, for the last fortnight, against tilt angle. This fortnight
output was lower than the last fortnight except for JW (see graph 3).
Graph #2.
Tilt angle compared with KWh outputs for the last fortnight followed by
previous fortnight values
The following graph compares the output per panel for each system since
13th July 2008. I cant explain the anomaly of JW except that a
combination of NE and high tilt angle has lifted output.
Graph #3.
Comparison of systems shows Watts generated per panel.
The following graph
aligns all the readings (sequenced left to right) with tilt angles. Im looking
for a better way to display the changes through season.
Graph #4.
Comparison of all KWh readings for each system ranked left to right by time and
tilt angle.
Photovoltaic panels
are not the most efficient means of converting solar energy. The following
graph shows the seasonal rate of conversion of the available solar energy.
Available solar energy is taken from the Melbourne tables of the Solar
Radiation Handbook. The most efficient is MG.
Graph #5.
Comparison of rates of conversion of the available solar energy
This project has been
tracking the influence of tilt angle on system output. The table below broadly
shows that tilt angles approaching latitude are more productive than flatter
angles. However, the major exceptions, MG and DC raise further questions.
Graph #6. Comparison of the influence of tilt angle on output, normalised by kWhs per panel.