EXPERIMENTAL SOLAR HEATING PANEL OF THE THOMASON TYPE AT NEW MEXICO STATE UNIVERSITY, LAS CRUCES. WATER TRICKLES DOWN AN INCLINED, CORRUGATED BLACKENED METAL PLATE UNDER AN INSULATING GLASS PLATE. COLLECTED IN A TROUGH, IT IS PUMPED INTO A STORAGE SYSTEM AND RECIRCULATED, REACHING A TEMPERATURE OF 120 DEGREES OR MORE

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