PRINCIPLES of CHEMICAL ENGINEERING

Programma

 

Corso di Laurea Magistrale in Chemical Engineering for Industrial Sustainability (LM-22)

Anno Accademico 2014 - 2015

 

CORSO di “PRINCIPLES OF CHEMICAL ENGINEERING” (Cod: 91283)

 

Course teacher: Prof. Domenico Acierno

Dipartimento di Ingegneria Industriale (ex DMFCI) Building 13.

e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

OBIETTIVI

Acquisition of the concepts of momentum, energy and matter balance and the basic mathematical tools aimed at implementing the laws of molecular transport on a microscopic scale for the determination of the velocity profiles, temperature and matter concentration; using of semiempirical of coefficients for the description of transport between the phases in macroscopic systems of engineering relevance.

 

The teaching methodology of the course consists of lectures and exercises

 

PREREQUISITI RICHIESTI

No preparatory aspects.

 

FREQUENZA LEZIONI

The student is required to attend at least 70% of the lessons, cfr. Punto 3.3 of Regolamento Didattico of CLM in Chemical Engineering for Industrial Sustainability

 

TESTI DI RIFERIMENTO

1. Transport Phenomena – Bird, Stewart, Lightfoot – Casa Editrice Ambrosiana – Milano

 

2 Lecture notes

 

 

PROVA D’ESAME

 

 

Appelli successivi all’erogazione del corso

Written test followed by oral examinations.

Modalità di iscrizione ad un appello d’esame

he reservation for an exame session is mandatory and must be made exclusively through the web portal students within the scheduled period.

 

Date d’esame 

http://portalestudente.unict.it/portalestudente/mapServlet

 

CONSEGNA MATERIALE DIDATTICO

The supplementary material is provided in hard copy at the end of lessons.

 

PROGRAMMA DEL CORSO

1. MOMENTUM TRANSPORT

The viscosity and the mechanism of momentum transport. Newton's law of viscosity. The viscosity and the mechanism of momentum transport. Newton's law of viscosity. Velocity distribution in laminar flow. Momentum balance in a layer; boundary conditions. Motion of a falling film. Motion of a fluid in a circular tube. Motion in a section ring. Motion of two adjacent immiscible fluids. Numerical examples.

 

 

2. EQUATIONS OF VARIATIONS FOR ISOTHERMAL SYSTEMS

Velocity distribution in turbulent flow. Fluctuations and time averaged quantities. Transport between the phases in isothermal systems. Dimensional analysis and Buckingham theorem. Definition of the friction coefficients. Friction coefficient of for motion in tubes. Friction coefficient for motion around spheres.

 

 

3. VELOCITY DISTRIBUTION IN TURBULENT FLOW

Fluctuations and time averaged quantities. Transport between the phases in isothermal systems. Dimensional analysis and Buckingham theorem. Definition of the friction coefficients. Friction coefficient of for motion in tubes. Friction coefficient for motion around spheres. Numerical examples.

 

 

4. MACROSCOPIC BALANCE FOR ISOTHERMAL SYSTEMS

Macroscopic mass balance. Macroscopic momentum balance. Macroscopic mechanical energy balance (Bernoulli). Evaluation of friction losses. Application of macroscopic balances in solving problems with movement. Numerical examples.

 

 

5. THE THERMAL CONDUCTIVITY AND THE MECHANISM FOR TRANSPORTING ENERGY

Fourier's law of heat conduction. Temperature distribution in solids and in laminar flow. Energy balance in a layer; boundary conditions. Heat conduction through composite walls. Forced convection. Natural convection. Numerical examples.

 

 

6. THE EQUATIONS OF VARIATION FOR NON-ISOTHERMAL SYSTEMS

The energy equations. Transfer between the phases in non-isothermal systems. Definition of the heat transfer coefficient. Heat transfer coefficient for forced convection within the tubes. Heat transfer coefficients for forced convection around submerged objects. Numerical examples.

 

 

7. MACROSCOPIC BALANCES IN NON-ISOTHERMAL SYSTEMS

Macroscopic energy balance. Mmacroscopic mechanical energy balance (Bernouli). Use of the macroscopic balances to solve problems in steady state. Numerical examples.

 

 

8. THE DIFFUSIVITY AND THE MECHANISM OF MASS TRANSPORT

Definitions of mass concentration, mass rate and mass flow. Fick's law of diffusion. Concentration distribution in solids and in laminar flow. Mass balance in a layer; boundary conditions. Diffusion through a stagnant gas film. Diffusion with heterogeneous chemical reaction. Diffusion with homogeneous chemical reaction. Diffusion in a falling liquid film; mass transfer by forced convection. Numerical examples.

 

9. TRANSPORT BETWEEN PHASES IN MULTI-COMPONENT SYSTEMS

Definition of binary coefficients of mass transport in one phase. Correlations of the transfer coefficients in a phase for low rate of mass transfer. Numerical examples. Macroscopic balances with more than one component. The macroscopic mass balance. The macroscopic momentum balance. The macroscopic energy balance. The macroscopic mechanical energy balance.