Nanofluid filled enclosures: potential photo-thermal energy conversion and sensible heat storage devices

In the present work we propose “nanofluid filled enclosures” as potential photo-thermal energy conversion and sensible heat storage devices. Herein, optical charging of nanofluid has been modeled “solar radiant - nanoparticles” interaction. The subsequent redistribution coupled transport phenomena involving mass, momentum transport. particular, enclosure with adiabatic, isothermal (through convective) boundaries have analyzed to decipher fundamental limits thermal discharging capacities respectively. Furthermore, effect nanoparticles volume fraction on mechanisms its thereof critically investigated. Detailed analysis reveals that under similar operating conditions, in volumetric absorption mode (i.e., at low fraction) higher (8%–20% higher) (13%–58% than corresponding surface high fraction). Overall, enclosures”, particularly mode, could be deployed for efficient solar storage.