Numerical study of the influence of Prandtl number on forced convective heat transfer through a riser pipe of a flat plate solar collector is done. The working fluid is Al2O3/water nanofluid. By Finite Element Method the governing partial differential equations are solved. The effect of the Prandtl number on the temperature and velocity field has been depicted. Comprehensive average Nusselt number, average bulk temperature, mean velocity, mid-height temperature inside the pipe, mean output temperature and collector efficiency are presented for the governing parameter mentioned above. Nu increases by 16% with the variation of Pr from 4.6 to 6.6 using nanofluid. Due to rising Pr heat transfer rate increases but collector efficiency devalues.
Nasrin, Rehen; Parvin, Salma; and Alim, M. A.
Prandtl Number Effect on Assisted Convective Heat Transfer through a Solar Collector,
Applications and Applied Mathematics: An International Journal (AAM), Vol. 11,
3, Article 3.
Available at: https://digitalcommons.pvamu.edu/aam/vol11/iss3/3