Heat and Mass Transfer

Code:

EA0028

Acronym:

TCM

Keywords
Classification	Keyword
OFICIAL	Interp/Personal professional attitudes and capac.
OFICIAL	Environmental Technologies
OFICIAL	Engineering Sciences

Instance: 2019/2020 - 1S

Active?	Yes
Responsible unit:	Department of Chemical and Biological Engineering
Course/CS Responsible:	Master in Environmental Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
MIEA	64	Syllabus since 2006/07	3	-	6	56	162

Teaching language

Portuguese

Objectives

This course unit aims to develop students’ skills in the interpretation and quantification of heat and mass transfer phenomena, with applications both in the environment, in industry and in the human body. A background of Mathematical Analysis and basic Thermodynamics is needed. 
Special emphasis is given to the critical thinking applied to the analysis of problems which students come across during the semester. The learning outcomes are the identification of mechanisms and the calculation of the rate at which heat and mass transfer occur in different situations.
Students will be stimulated to survey printed and electronic literature in English, as well as working in a team, this component being taken into account in the assessment.

 

Learning outcomes and competences

Learning Outcomes - solve problems involving heat and mass transport, design of simple  heat and mass transfer systems.

Skills acquisition - application of critical thinking to solve engineering problems involving heat and mass transport, knowledge integration,  teamwork.

 

Working method

Presencial

Pre-requirements (prior knowledge) and co-requirements (common knowledge)

Calculus and Thermodynamics basics

Program

HEAT TRANSFER:
1. Introduction: Heat transfer vs. Thermodynamics. Heat transfer mechanisms: conduction, convection and radiation;
2. Steady state heat conduction transfer;
3. Non-steady state heat transfer;
4. Convection heat transfer: thermal boundary layer; correlation to calculate convective coefficients in Newtonian fluids. Application to  heat transfer systems.
5. Elements of Radiation heat transfer: emission, absorption and radiation transmission; Solar and atmospheric radiation: concepts and calculations.

MASS TRANSFER:
1. Mass transfer fundamentals: molecular diffusion; Convection and its effects on diffusion; Non-steady state mass transfer;
2. Mass transfer and reaction (simple cases); Mass transfer in gas-liquid and solid-fluid systems (simple cases);
3. Simultaneous mass and heat transfer.

Illustrative Examples: Heat transfer in skin burns; heat transfer in landfills; milk pasteurization; temperature profiles in solid food sterilization; effects of convection, radiation and transpiration on maintaining body temperature.

 

Mandatory literature

Luís de Melo; Transferência de Calor (slides), 2016
Alexandra Pinto; Transferência de Massa (slides), 2016
Çengel, Yunus A.; Heat transfer. ISBN: 0-07-115150-8
Middleman, Stanley; An introduction to mass and heat transfer. ISBN: 0-471-11176-7

Complementary Bibliography

John Lienhard IV, John Lienhard V; A Heat Transfer Textbook (Livro disponível no site http://web.mit.edu/lienhard/www/ahtt.html), Phlogiston Press, Cambridge, Massachussets, 2006

Teaching methods and learning activities

This course unit is composed by theoretical-practical classes (two classes of 1,5 h and one of 1 h, weekly) where the theoretical concepts and their applications will be presented. Additionally, problems will be discussed.
Students will get exercise sheets, so that they can practice OUTSIDE class time. Professors will be available to help students solve those exercises.
Some of those exercises will be discusses in class.

 

keywords

Technological sciences

Evaluation Type

Distributed evaluation with final exam

Assessment Components

Designation	Weight (%)
Exame	70,00
Trabalho escrito	30,00
Total:	100,00

Eligibility for exams

To be admitted to exams, students have to attend classes.

 

Calculation formula of final grade

The Final Grade will be based on two mandatory components:

1) Continuous Assessment (30% of the final grade): 1 problem of Heat Transfer (15% of the final grade), 1 problem of Mass Transfer (15%). These problems are solved in teamwork, (each group team is composed of 2 students).

2) EXAM (70% of the final grade) covering all the themes of the course unit (3 hours).

Exams contain a first Part without consultation of the slides/books, and a secnd Part where the students can use the slides/books.

IMPORTANT COMMENT: Students have to reach a MINIMUM grade of 8 in the EXAM component and, furthermore, they have to reach also a MINIMIUM grade of 4 on each one of the 2 parts of the course programme (Heat Transfer AND Mass Transfer).

The final grade is given in a scale from 0 to 20.

 

Examinations or Special Assignments

See Final Grade

 

Special assessment (TE, DA, ...)

Final Exam

 

Classification improvement

Final Exam