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Posted by on December 16, 2007, 5:26 am
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Hi, Fellow Members,
I'm taking this opportunity to introduce myself, -an EE devoted to
energy conservation and optimum energy practices....
After assessing or observing hundreds of solar installations, I
concluded a large proportion of PV installations is not performing
properly, and is un-noticed by their owners and operators, due to a
lack of monitoring system. This condition had been reported in CEC/PUC
and National Renewable Energy Laboratories (NREL) sponsored studies.I
decided to do something about it, by deploying part of our resource in
PV performance monitoring system.
Any solar system owner and operators can now obtain mathematical model
derived performance bench marks on line, and stop wondering about how
their system is performing.
A visitor to the website, www.wattminder.com, or www.pvperformance.com,
simply enters a brief set of values for 'vital statistics' of a solar
system. The free performance predictor will output a look-up table
for a number of environmental conditions, that this visitor's PV
system should be producing at that instance--given the Sun's position
and the solar array's location and attitude, as well as temperature of
the solar panel(usually 10 to 20 degrees higher than the ambient).
The values provided serves as a checkpoint for a PV system owner who
does not have a monitoring system, or if monitoring system does not
indicate how well his/her system is performing. He/She may then
manually check on his system's power meter reading, or from display on
the inverter readout. If the numbers match, or track well with each
other, under somewhat different operating conditions, it would
indicate his PV system is performing reasonably well. We hope, by
providing this free bench mark service, under-performing systems can
be identified, and brought to the attention of its install contractor,
who should then correct any performance issue, thus restoring an under-
performing system to its full capacity.
I like to invite you all to visit our site www.pvperformance.com,
exercise it rigorously, and
give us critiques, inputs, and suggestions. We hope to make it a
truly useful free service
to the PV community.
Thanks ALL and Take Care,
Steve
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