User:Swbyang

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[edit] References

Watts your solar system should be producing?

Any solar system owner and operators can now obtain mathematical model
(highly condensed formulation from Sandia National Laboratory) 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 may get indications of
expected performance.

== Watts = S*Cos(Φ)*D*Area*(1-(0.005*(T-25))) ==

Expected Photovoltaic Performance for Φ of 84° 54′ 45

CellTemp.	200 W/M2	300 W/M2	400 W/M2	500 W/M2	600 W/M2	700 W/M2	800 W/M2	900 W/M2	1000 W/M2
30.0°C	65.85	98.78	131.70	164.63	197.55	230.48	263.40	296.33	329.26

etc.

This look-up table show a range of environmental conditions, that this visitor's PV system
should be producing at that instance for a well functioning system—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 tracks well with each other,
under somewhat different operating conditions, it would indicate his PV system is performing
reasonably well. <script src="http://www.hugg.com/files/huggthis/huggthis.js" type="text/javascript"></script>