Abstract: . . .  regression coefficient (R2) of 0.992, indicating a very nearly constant array efficiency: 1 η array = P array/ (It*Ac) = 0.089 FUEL CELL PERFORMANCE An inspection of the fuel cell system was performed December 21 and 27, 2001. The following steps specified by the fuel cell manufacturer were followed. VISUAL INSPECTION BEFORE OPENING Ensure that the cylinder is hydrogen, not a mixture. Ensure that the hydrogen pressure is set above 20 psig (preferably in the 30-50 psig region). Ensure that the H2 and air passages are not blocked. Ensure that the cooling air passages are not blocked. Measure the output voltage . . .
. . .  exceeds that. As a consequence, the fuel cell used more hydrogen than expected but met the load reliably for two years, a- testament to the value of a hybrid strategy. In August 2001, frequent power outages led to this investigation. It was found that fuel cell power output was crippled by a burnt fuse and failed cells within the stack. 6  . . .
. . .  PHOTOVOLTAIC/FUEL CELL REMOTE HYBRID POWER SYSTEM AT KIRBY COVE, CALIFORNIA Andy Walker National Renewable Energy Laboratory 1617 Cole Blvd Golden, Colorado 80401 andy_walker@nrel.gov Greg Barker Mountain Energy Partners 3227 Ridge Rd Nederland, Colorado 80466 Gbarker123@aol.com ABSTRACT This paper reports short-term performance measurement of a hybrid photovoltaic/fuel cell power supply system at Kirby Cove Campground in Golden Gate National Recreation Area, California. The system operated reliably for two years from June 1999 to June 2001. During this period, the campground host load was met with a combination . . .
. . .  tent campground. MEASUREMENT OF PERFORMANCE Instrumentation was installed on the system on June 8, 2001. Table 1 below lists the physical properties measured and the sensors used to measure each one. Measurements were made at 1-second intervals, and stored as both 10-minute and 60-minute averages. All measurements were made using a Campbell Scientific CR10 datalogger. Because it is difficult to retrieve data from the remote site, some data was lost as new data wrote over the full memory of the datalogger. On August 8, an out-of-range alarm was exceeded on the load current, and no useful data was collected . . .
. . .  was by FIRST, INC., Solar Depot, and SunPirates Inc. Instrumentation is by Mountain Energy Partners. REFERENCES 1. Azerbegi, R., Mas, C., Walker, A., Morris, R., and Christensen, J., "Determining the Best Source of Renewable Electricity to Power a Remote Site for the National Park Service." ASME International Solar Energy Conference, Maui, HI, April 12-15, 1999. 2. Wheeler, M., H Power Corp., 1373 Broad Street, Clifton, New Jersey 07013. Personal communication, July 2, 2001. Borbely, A.M., and Kreider, J.F., eds., Distributed Generation: the Power Paradigm for the Next Millenium. ISBN 0-8493-0074-6, . . .
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