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The experimental observation of internal uantum efficiencies above unit % in crystalline silicon solar cells has broug t up the question whether the generation of multiple electron/hole pairs has to be taken into consideration also in solar cells based on direct gap amorphous semiconductors.
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07 Alternative energy sources (solar energy) porous absorber will enhance heat transfer from the absorber to the airstream. The thermal efficiency of this type of collector is significantly higher than the thermal efficiency of conventional air heaters. 97102963
A numerical simulation program, based upon a finite difference nodal network, was used to simulate two Los Alamos test cells (one single and one multi-room cell)and a typical residence --all of which were exposed to intense insolation and large changes in ambient weather conditions. For the test cel