ECTS credits ECTS credits: 3
ECTS Hours Rules/Memories Hours of tutorials: 1 Expository Class: 12 Interactive Classroom: 14 Total: 27
Use languages Spanish, Galician
Type: Ordinary subject Master’s Degree RD 1393/2007 - 822/2021
Departments: Chemistry Engineering
Areas: Chemical Engineering
Center Higher Technical Engineering School
Call: Second Semester
Teaching: With teaching
Enrolment: Enrollable | 1st year (Yes)
The course aims to train students in the basics of controlling mechanisms (mass and heat) of the transfer rate in an operation in which solids are present as is the drying. Equilibrium conditions (thermodynamic equilibrium) and drying kinetics (transfer rate) using rigorous and approximate models will be addressed. Enhancement of transfer processes is necessary to minimize energy costs in industrial processes in which the drying step plays an important role, but with a restrictive approach as is the quality of dried product. Different common drying (thermal and non thermal) methods in the industry and current trends will be studied. The course is focused to the practical use (practical exercises) of the concepts and methods that are employed to design of drying equipment using hot convective air.
a. Lectures.
Theme 1. Importance of drying operation in the chemical and food industries. Energy aspects. Moisture-solid interaction. Air-water interactions: humid air properties. Psychrometric and Mollier charts.
Theme 2. Drying statics. Water activity. Experimental measurement and prediction. Water sorption isotherms (desorption/adsorption). BET, GAB and empirical models. Applications.
Theme 3. Mass and heat transfers in drying processes. External and internal conditions. Moisture transport mechanisms: diffusion. Stationary and non-stationary systems. Experimental determination of effective diffusivities.
Theme 4. Introduction to the design of convective dryers. Differential balances of energy and mass. Continuous and batch dryers. Mathematical modeling. Application to dryers with dispersed solids: pneumatic dryers.
Theme 5. Other drying methods. Drying by radiation (IR), dielectric, freeze-drying and osmotic dehydration. Selection of drying equipment. Methods of energy efficiency.
b. Interactive lessons.
1. Seminars of exercises-solving.
2. Report of lab practices with format as scientific paper. Oral presentation.
c. Lab practices
1. Experimental drying kinetics determination of apple samples: effect of geometry and temperature. Data treatment. Determination of coefficients of diffusion.
Basic Bibliography
MUJUMDAR, A.S. Handbook of industrial drying. New York: Marcel Dekker. 1995. ISBN: 978-1-46659-665-8. (SIG: 132 29). (the e-book is requested)
Complementary Bibliography
BARBOSA-CANOVAS, G.V. VEGA MERCADO, H. Deshidratación de alimentos. Zaragoza: Acribia. 2000. ISBN: 978-8-42000-918-6. (ALT 368).
KUDRA, T., MUJUMDAR, A.S. Advances drying Technologies, Basilea: Marcel Dekker. 2002. ISBN: 0-8247-9618-7. (SIG: 164 11).
Knowledge
(CN02) Acquire advanced knowledge and demonstrate, in a scientific and technological or highly specialized research context, a detailed and well-founded understanding of the theoretical and practical aspects and work methodology in one or more fields of study in Chemical Engineering.
Competence
(CP03) Design products, processes, systems and services of the chemical industry, as well as the optimization of others already developed, taking as a technological basis the various areas of chemical engineering, including transport processes and phenomena, separation operations and engineering. of chemical, nuclear, electrochemical and biochemical reactions.
Skills
(HD04) Search, process, analyze and synthesize, critically, information from various sources to establish the corresponding conclusions.
(HD09) Address problems from a scientific perspective, recognizing the importance of searching and managing existing information.
Lectures CN02, CP03
Seminars CP03, HD09
Laboratory HD04, HD09
The theoretical contents of the course will be taught based on master classes. In each of them, follow-up questions will be asked about the subject in class for the student's participation. Both the blackboard and PowerPoint presentations will be used as support material, which will previously be delivered to the student in the course of the campus virtual along with the program and problem sheets. (CN02, CP03).
In the seminars, problems proposed in the bulletins of each topic will be solved by both the teacher and the students. (CP03, HD09).
A group of students (number to be determined based on enrollment) will carry out work on the design of a convective dryer or the description of drying equipment that uses other advanced techniques used in different industrial sectors. This work will be presented in the last scheduled interactive classes on the calendar for 20 minutes after supervision by the teacher during tutorial hours. (CN02, CP03).
Laboratory practices will be carried out in order to experimentally determine drying kinetics under different operating conditions of different products or the determination of equilibrium conditions under different hygrothermal conditions. Treatment of the data with the corresponding models will result in the evaluation of effective diffusion coefficients under different experimental conditions. (HD04, HD09).
Attendance at practices is mandatory.
Temporal description of activities:
Presentation of the subject.
Topic 1. Importance of drying in the chemical and food industry. Energy aspects. Water-substrate interaction. Air-water interaction: properties of humid air. Psychrometric and Mollier diagram. (4 h)
Topic 2. Drying statics. Water activity. Experimental measurement and prediction. Sorption isotherms (desorption/adsorption). BET, GAB and empirical models. Applications. (4 h)
Topic 3. Transfer of matter and heat in drying processes. External and internal conditions. Moisture transport mechanisms: diffusion. Stationary and non-stationary systems. Experimental determination of effective diffusivities. (4 h)
Laboratory practices: Determination of water effective diffusivities. (8 h)
Topic 4. Introduction to the design of convective dryers. Differential energy and material balances. Continuous and discontinuous dryers. Introduction to the design of convective dryers. Mathematical modeling. (4 h)
Topic 5. Other drying methods. Radiation (infrared), dielectric, freeze-drying and osmotic dehydration drying. Selection of drying equipment. Energy efficiency methods. (4 h)
1.673 / 5.000
Resultados de traducción
Resultado de traducción
Rating Distribution
Exam 50%
Work/practice reports 35% (10/25%)
Tutorials 10%
Teacher report 5%
This distribution of activities related to the evaluation will be maintained in the three scenarios proposed by the USC.
In cases of fraudulent completion of exercises or tests, the provisions of the Regulations for evaluating the academic performance of students and reviewing grades will apply.
Students' learning will be monitored by carrying out problems and activities individually and/or in groups. Likewise, students will take a problem-solving exam for the theoretical part that, together with the laboratory report, will allow them to individualize the final grade.
To pass it is necessary to obtain at least a total of 5 points and 3/10 in each of the parts of the evaluation, except in the Tutorials/teacher report sections.
In the recovery opportunity, the accumulated score of the continuous evaluation is maintained.
In additional calls, the student can make use of the continuous evaluation grades and if the practices are not failed, they do not have to repeat them.
The evaluation of the competencies will be carried out as indicated in the methodology section where the competencies to be acquired in each activity are indicated. So:
The written exam, being of a theoretical and practical nature, evaluates the learning results corresponding to the expository and seminar classes (CN02, CP03, CP03, HD09).
Group work (including tutoring) and presentation: CN02, CP03.
Lab practices: HD04, HD09.
Lectures: 12
Seminars: 10
Lab practices: 12
Group tutorials: 4
Exam and review: 8
Total: 46
Students of this course must have a basic knowledge of heat and mass transfers as well as on balances of property.
It is advisable that students have English proficiency to consult bibliography and also handling spreadsheets to solve design problems.
Finally, of course, it is recommend the use of tutorials for clarification of doubts and concepts.
The language is Spanish.
Operation handbook of dryer are disposal for the students with topics related to safety and health in lab.
The admission of students enrolled in the laboratory of practices requires that they know and comply with the Protocol of Safety Standards in the ETSE labs. This information is available on the USC website:
https://www.usc.gal/gl/centro/escola-tecnica-superior-enxenaria
Access to intranet
Go to Comisións > Seguridade e saúde > Formación.
Click on "Protocolo de formación básica en materia de seguridade para espazos experimentais".
Ramon Felipe Moreira Martinez
Coordinador/a- Department
- Chemistry Engineering
- Area
- Chemical Engineering
- Phone
- 881816759
- ramon.moreira [at] usc.es
- Category
- Professor: University Professor
| Wednesday | |||
|---|---|---|---|
| 16:00-18:00 | Grupo /CLE_01 | Spanish | Classroom A6 |
| 05.28.2025 10:00-12:00 | Grupo /CLIS_01 | Classroom A6 |
| 05.28.2025 10:00-12:00 | Grupo /CLIL_01 | Classroom A6 |
| 05.28.2025 10:00-12:00 | Grupo /CLE_01 | Classroom A6 |
| 07.08.2025 10:00-12:00 | Grupo /CLIS_01 | Classroom A1 |
| 07.08.2025 10:00-12:00 | Grupo /CLIL_01 | Classroom A1 |
| 07.08.2025 10:00-12:00 | Grupo /CLE_01 | Classroom A1 |