Fondo "Giorgio e Gabriella Nebbia" - Sezione "Energia Solare"
28.55 Energy from the Sun A brief, informative, non-technical survey of Solar Energy and some of its possible applications (Solar Energy Laboratory University of Arizona, Arizona). The laboratory roof is made of copper "tube-in-strip" material containing water-circulation tubes. The roof covering serves as a heat collector in winter and rejects heat in the summer by radiation to the night sky.