Abstract

This paper reports on the methodology and results of a preliminary analysis of a hybrid solar lighting concept that has the potential to provide cost-effective topside daylighting to the core areas of commercial buildings of all types. The presented hybrid lighting concept also includes a “full spectrum” dish-type concentrating solar collector. This collector uses both the incident visible and infrared solar radiation to provide both daylighting and electric power. The incident solar radiation is separated using cold mirror technology. Visible light is sent to a fiber optic bundle for routing to integrated fiber optic/fluorescent luminaires within the building. Separated infrared solar radiation is focused on a photovoltaic cell and converted to electricity. The electricity produced provides self-powering of the collector solar tracking system and the excess electricity produced is sent into the grid-connected commercial building electric system. The paper presents the potential for performance increases/cost reductions in the technology and the current and future cost competitiveness of this promising solar technology.

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