Heat and Mass Transfer Research Journal (HMTRJ)

Research Article

Sublimation of Suspended Paradichlorobenzene Spheres in Natural Convection

Christopher B. Anderson, William S. Janna and Jeffry Marchetta

Department of Mechanical Engineering, The University of Memphis, Memphis, TN 38152, USA.

Submitted: November 14, 2020; Accepted: December 15, 2020

Abstract

Spherical paradichlorobenzene specimens were cast, and allowed to sublimate in a natural convection environment. The mass loss over time was recorded to obtain the sublimation rate. Sphere diameters tested were 3 cm, 4 cm, 5 cm, and 5.8 cm. Three data sets for each sized sphere were recorded to ensure accuracy. Results were used to determine the Schmidt, Grashoff, Sherwood, and Rayleigh numbers. After finding these values, an equation was found relating the Sherwood number to the Rayleigh number. Using this technique and these results it is possible to determine heat transfer coefficients via the heat mass transfer analogy. This method is not only bound to spheres and natural convection, for it can be used to analyze more complex geometries as well as forced convection environments.

Keywords

Sublimation; Natural Convection; Paradichlorobenzene Spheres.

Downlaod Full Text >>