Microsolar thermal collector. (a) Experimental schematic. (b) Infrared image demonstrating rapid temperature increase (blue: coolest; pink: warmest).
Representative nanofluid samples tested in microcollector.
Scattering regime map (Ref. 16).
Experimental microsolar thermal collector testing results. (a) Steady-state collector efficiency and (b) stagnation temperature difference as function of volume fraction.
Theoretical benefit of volumetric absorption when utilizing a 30 nm graphite nanofluid in comparison to conventional area-based absorption.
Comparison of modeling and experimental results for 30 nm graphite spheres.
Collector efficiency as a function of silver nanoparticle diameter (squares: bulk properties; circles: size-dependent properties) and volume fraction.
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