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CI-81-10-3 -- The AII-Day Efficiency of Collector Arrays in National Solar Data Network
Conference Proceeding by ASHRAE, 1981
T.F. Eck
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In this paper, field data for collector arrays from operating solar energy systems in the National Solar Data Network are analyzed to determine array performance. Data are collected every 5 min. and 20 sec. for collector array inlet and outlet temperatures, array flow rate, and outdoor ambient temperature. In addition, total insolation in the plane of the collector array is sampled every 32 sec. and 10 values are averaged to provide one value for the 5 min. and 20 sec. period. Hourly, daily, and monthly collector array efficiencies are then calculated from these data.
Citation: Symposium, ASHRAE Transactions, Volume 87, Part 2, Cincinnati, Ohio