Physical Transport Phenomena 2 for premasters

URL study guide

Description

This course covers the transport mechanisms (and their rates) for energy and component mass transport
by molecular transport and (forced and free) convective transport and radiation, how to set up intergral (macro) or differential (micro) balances.  

In particular the following topics will be covered: steady conduction in Cartesian, cylindrical and spherical
coordinates (including introduction of transfer coefficient & Nusselt number), unsteady conduction: penetration
heory for semi-infinite body; Fourier solutions for finite object, external heat transfer limitations plus comparison
of transfer coefficients, steady and unsteady diffusion: rules of correspondence; effect of differences in solubility,
forced convective energy transport: Laminar flow (Graetz problem) and turbulent flow through tubes and past
objects, forced convective mass transport: Chilton-Colburn analog, free convection (mechanism plus laminar/turbulent flow)
and radiation, and exchange equipment: single stream and two-stream (co-current and counter-current) exchangers and introduction of HTU and NTU. 

Objectives

• The student is able to analyze physical transport phenonema problems on energy and component mass transport in terms of transport mechanisms, determine heat/mass transfer resistances (or time constants) to assess which mechanism(s) is/are rate limiting and use these to set up differential (microscopic) or integral (macroscopic) balances for energy and component mass.  
• The student is able to calculate temperature and concentration profiles for situations where Cartesian, cylindrical or spherical coordinates can be applied. 
• The student is able to distinguish and describe the mechanisms that determine the time constants for heat and mass transfer (heat or mass transfer resistances).  
• The student is able to make appropriate approximations for and on the basis of the comparison of heat and mass transfer resistances.  
• The student is able to apply correlations for heat and mass transfer (Nusselt and Sherwood correlations);  
• The student is able to combine relevant heat and mass balances to make a basic design of simple process equipment (heat and mass exchangers). 

Method of Assessment