Solar Boost / C40 test [RE-wrenches]

Carl Emerson freepower at freepower.co.nz
Sat May 5 03:46:05 PDT 2001


Hullo Blair,

Great effort.

Any chance of the same readings on a cloudy day (if you have them).
Could you also try near sunrise and sunset. This I think would confirm more gain
from the Solar Boost 50 in incident light and global irradiation and at cooler
temperatures.

Carl Emerson
Manager
FREEPOWER LTD.  "Harnessing Natural Energy"  Auckland, NEW ZEALAND.

blair Tumpmay wrote:

>   OK you folks heres the raw data, sorry travis that spread sheet stuff
> would have taken me till next week!
>
> All measurments were taken w/ a Fluke 87, Fluke clamp on AC 80i 400 / DC
> 80i1010 amp probes.Watts w/ a Brand Electronics transducer at AC L1to the
> grid.  DC measured at the Batt cable in DC disconnect box to inverter.Temp
> was a fluke thermocoupler K type surface probe.
>
> Site; N44*   W 069*    temp amb; 92.2* panel top temp;117* back of panel
> 124.2* array ang;44* facing;185* M Elv;170'
>   System SW 4024 * 375 surrette batts.15 585 panels & 1 590 panel wired 24vt DC
>
> C40'    Battery voltage;25.46  panel voltage 26.32 DC amps in 39.5-40  AC
> amps to grid 7.62  Brand WT Mtr  930 Avg
>
> Solar Boost 50; Batt.Vt.25.46 Panel Vt.28.5 DC Amps in 40.9-41.2  AC Amps
> into grid 8.1 Brand WT Mtr; 970 Avg

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