Thermal Performance of a Dimpled Tube Parabolic Trough Solar Collector (PTSC) with SiO<sub>2</sub> Nanofluid

<div>(a) Mass flow rate vs. gradient temperature. (b) Volume concentration vs. gradient temperature.</div>

International Journal of Photoenergy

Figure 9: Thermal Performance of a Dimpled Tube Parabolic Trough Solar Collector (PTSC) with SiO<sub>2</sub> Nanofluid 