Heat and Mass Transfer

Code:

EBE0163

Acronym:

TCMA

Keywords
Classification	Keyword
OFICIAL	Engineering Sciences

Instance: 2012/2013 - 1S

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

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
MIB	82	Syllabus	2	-	5	56	135

Teaching language

Portuguese

Objectives

This course unit aims to develop students’ skills in the interpretation and quantification of heat and mass transfer phenomena in industrial biotechnological systems, both in the environment and human body.
It is given a special emphasis to the development of critical thinking in the analysis of problems, which students come across during the semester, namely the identification of mechanisms, which in a given situation determine the velocity of heat and mass transfer.
Students will be stimulated to survey print and electronic literature in English, as well as working in a team, being this component taken into account in the assessment.

Program

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 and non-Newtonian fluids;
5. Heat exchanger: principles of operation; types of exchangers, selection; dimensioning; exchanger fouling;
6. Elements of Radiation Heat Transfer: emission, absorption and radiation transmission; Solar and atmospheric radiation: concepts and calculations;
7. Mass transfer fundamentals: molecular diffusion; Convection and its effects on diffusion; Non-steady state mass transfer;
8. Mass transfer and reaction (simple cases); Mass transfer in gas-liquid and solid- fluid systems (simple cases);
9. Simultaneous mass and heat transfer;
10. 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; biological reactors mass transfer; artificial system of blood oxygenation; artificial kidney/haemodialysis; supervised release of drugs

Mandatory literature

Çengel, Yunus A.; Heat transfer. ISBN: 0-07-115150-8
Middleman, Stanley; An introduction to mass and heat transfer. ISBN: 0-471-11176-7
Luís Melo; Apontamentos de Transf Calor, 2012
Alexandra Pinto; Apontamentos de Transf Massa

Teaching methods and learning activities

This course unit is composed by theoretical-practical classes (twice a week, 90 m each) and theoretical classes (once a week, 1 h), in which will be presented the theoretical concepts and their applications. Besides, 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 discussed in class.

keywords

Technological sciences

Evaluation Type

Distributed evaluation with final exam

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 components:

1) Continuous Assessment (30% of the final grade): 1 problem of Heat Transfer (15% of the final grade), 2 problems of Mass Transfer (7,5% each). These problems are solved in teamwork, (each group team composed of 2 students).
2) EXAM (70% of the final grade): This type of assessment can be achieved by one of the two follwoing methods: a) FINAl EXAM covering all the themes of the course unit (3 hours); b) MID-TERM test on Heat Transfer PLUS FINAL EXAM only on Mass Transfer (1.5 h each test).

If students have attended with success the mid-term test on Heat Transfer, they only have to answer the questions covering the theme of Mass Transfer (1.5 h).

IMPORTANT COMMENT: Students have to reach a MINIMUM grade of 8 in EXAM component (even the ones who have attended the mid-term test) 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).

3) If students do not deliver the problems, which are part of the Continuous Assessment component, they will only be assessed based on the grade of the Final Exam (inlcuidng all chapters of the course).

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

Examinations or Special Assignments

See Final Grade

Special assessment (TE, DA, ...)

Not applicable

Classification improvement

Final Exam