Abstract:Employing optical fibres for transferring concentrated radiation from solar concentrators has potential advantages in terms of transmission energy efficiency, technical feasibility and cost-effectiveness compared to a conventional heat transfer system employing heat exchangers and a heat transfer fluid. The basic investigated system comprised a broadband source, collimator lens, objective lens and optical fibre as the carrier of energy to the receiver. The relationship between transmission and length of fibre … Show more
“…4 The nanoparticles are multiwalled carbon nanotubes functionalized for high-temperature stability in heat transfer oils. 4,5 The project has created several promising proof-of-concept devices, [6][7][8][9][10][11] including a full-size prototype that incorporates both concentration and volumetric absorbers (see Figure 1). This system consists of a two-stage optical concentrator: a linear Fresnel lens (primary) and a compound parabolic concentrator (secondary).…”
Novel solar thermal collectors that incorporate optics and absorbers based on metamaterials and nanoparticle suspensions can provide hightemperature heat for industrial applications.
“…4 The nanoparticles are multiwalled carbon nanotubes functionalized for high-temperature stability in heat transfer oils. 4,5 The project has created several promising proof-of-concept devices, [6][7][8][9][10][11] including a full-size prototype that incorporates both concentration and volumetric absorbers (see Figure 1). This system consists of a two-stage optical concentrator: a linear Fresnel lens (primary) and a compound parabolic concentrator (secondary).…”
Novel solar thermal collectors that incorporate optics and absorbers based on metamaterials and nanoparticle suspensions can provide hightemperature heat for industrial applications.
“…For shorter wavelengths these fibers typically use low index polymers for their outer-cladding. However, these polymers display nonnegligible absorption at 1.9 µm [12] leading to a significant drop in device efficiency and limited power scaling because these polymers have a relatively low thermal failure limit compared to silica. For this reason there has been significant interest in alternative outer-cladding structures for high power ytterbium fiber lasers [13], [14].…”
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.