| Subject name (in Hungarian, in English) | Transfer processes | |||
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Transfer Processes
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| Neptun code | BMEGEÉEBG51 | |||
| Type | study unit with contact hours | |||
| Course types and number of hours (weekly / semester) | course type: | lecture (theory) | exercise | laboratory excercise |
| number of hours (weekly): | 2 | 1 | 1 | |
| nature (connected / stand-alone): | - | coupled | coupled | |
| Type of assessments (quality evaluation) | exam | |||
| ECTS | 4 | |||
| Subject coordinator | name: | Dr. Hégely László | ||
| post: | associate professor | |||
| contact: | hegely.laszlo@gpk.bme.hu | |||
| Host organization | Department of Building Services and Process Engineerig | |||
| https://epget.bme.hu/index.php | ||||
| Course homepage | https://epget.bme.hu/subjects.php?lepes=2&tid=105 | |||
| Course language | hungarian | |||
| Primary curriculum type | mandatory | |||
| Direct prerequisites | Strong prerequisite | BMETE93BG03 | ||
| Weak prerequisite | BMEGEENBGHK | |||
| Parallel prerequisite | ||||
| Milestone prerequisite | at least obtained 0 ECTS | |||
| Excluding condition | none | |||
Aim
The aim of the course is to make students who already know the basics of thermodynamics, fluid mechanics and mathematics familiar with the theory of basic material transfer operations, the basics of phase equilibria and their practical application, as well as the processes and equipment of one of the most important mass transfer operations (distillation) and their practical application. A further aim of the course is to illustrate the practical application of theoretical knowledge with the help of laboratory exercises.
Learning outcomes
Competences that can be acquired by completing the course
Knowledge
The student can give application examples for mass transfer, knows the most important diffusion operations. The student is aware of the concepts of continuous and batch operation, continuous and stagewise phase contact, and equilibrium stage. The student distinguishes between the ways in which the composition of multicomponent gases/vapours and liquids is given. The student knows Fick's 1st law and the definition of the molecular diffusion factor, its physical meaning and the state indicators that influence it. The student is aware of the concepts of equimolar counterdiffusion and unimolar diffusion. The student is aware of the molecular laws of heat, mass and momentum transport. The student describes heat and mass transfer in turbulent flow (turbulent conduction coefficients and transfer coefficients) in different ways. The student is aware of the laws of describing gas-liquid and vapour-liquid phase equilibria (Dalton's law, Raoult's law, Antoine-equation, Gibbs's phase rule). The student describes the mass transport between phases (two-film theory) and the relationship between mass transfer and mass transfer coefficients. The student understands the operation of continuous flashing, balance and equilibrium equations. The student knows the operation of rectification and the model of the continuous rectification column. The student interprets the different thermal states of feeds and their effect on the heat balance of the column. The student understands the operation of batch rectification and its different modes of operation. The student summarizes the efficiencies of tray columns and the different tray types. The student recalls the structure of packed columns and the different types of packing.
Ability
The student interprets the ways of giving the composition of multicomponent systems and switches between different types of concentrations. The student describes the empirically described laws of the conductive current densities of various extensive state variables. The student expresses Fick's first law and the molecular diffusion factor based on kinetic gas theory. The student calculates the molecular diffusion coefficient of different gases and liquids using the appropriate relationships, and can calculate the molecular diffusion rate of the components within a multicomponent phase. The student applies the analogy of heat and mass transfer to the right conditions. The student calculates the mass transfer coefficient and the ratio of mass transfer resistances in the case of a mass transfer operation between given phases. The student defines the equation of the operating line for the continuous rectification operation. The student graphically determines the theoretical stage number of a distillation column. The student determines the optimal feed location for a distillation column. The student is able to interpret the relationship between reflux ratio and stage number and determine the minimum and optimal reflux ratio. The student is able to calculate simple batch distillation and batch rectification. The student designs a packed rectification column using the transfer unit method. The student is able to measure the tension curve of solutions of different concentrations and to determine the boiling point rise by measurement. The student solves the measurement calibration of various sensor transmitters used in industry. The student t operates the department’s batch laboratory rectification column.
Attitude
The student cooperates with the instructor and fellow students in expanding the knowledge, and seeks active teamwork during the laboratory practices. The student seeks to learn about and routinely use the tools needed to solve problems related to diffusion processes. The student strives for an accurate and error-free solution of tasks and full compliance with deadlines. The student is susceptible to learning about and routinely using the instruments and tools used in measurements. The student follows the rules of occupational safety throughout the exercises.
Independence and responsibility
The student independently thinks through the tasks and problems related to mass transfer and solves them based on specific sources. The student arrives prepared to the exercises, with the necessary equipment, and participates actively. As part of the measurement group, the student cooperates with their fellow students in carrying out the measurements and solving the tasks. The student performs the subtask entrusted to them by the measuring group independently and responsibly. The student is responsible for the content and quality of the reports submitted by the group.
Teaching methodology
During the teaching of the subject, the lecture and the practice are separated mainly in the methodology. The lectures introduce students to the information defined by the knowledge competence elements mostly using the technique of frontal education. Lectures include slide shows and written materials that present illustrations and additional information that complement the knowledge heard in the lectures. Lectures and written curricula are complementary and not sufficient to achieve adequate preparation. The practical sessions are related to the lectures, they help to apply the knowledge and acquire it at the skill level. Demonstration of the practical application of knowledge is also aided by laboratory exercises.
Support materials
Textbook
Zsolt Fonyó, György Fábry: Vegyipari művelettani alapismeretek, Nemzeti Tankönyvkiadó, 2004, Budapest, ISBN: 9789631953152.
McCabe, Smith, Harriott: Unit Operations of Chemical Engineering, McGraw Hill, 2005, Boston, ISBN: 978-0072848236.
Lecture notes
László Hégely, Péter Láng: Átadási folyamatok. BME Department of Building Services and Process Engineering, 2021.
Online material
Validity of the course description
| Start of validity: | 2021. April 29. |
| End of validity: | 2028. July 15. |
General rules
Learning outcomes are assessed on the basis of a summative academic performance assessment (test), active participation in internships (partial performance assessment) and a written performance assessment (exam) conducted during the examination period. The test result (if you reach at least 55%) can be taken into account the exam with a weight of 50%. The condition for signature is reaching 40% on the test and the acceptance of the reports of the laboratory exercises. The latter is conditional on the participation in the laboratory practice and the successful completion of a short test written before the practice.
Assessment methods
Detailed description of mid-term assessments
| Mid-term assessment No. 1 | ||
| Type: | summative assessment | |
| Number: | 1 | |
| Purpose, description: | A complex, written way of evaluating the subject and knowledge, ability-type competence elements in the form of a test. The test may include theoretical questions to be explained, which examine lexical knowledge, essay questions, which understand the interpretation of each concept and the connections between them, and the ability to synthesize, as well as calculation tasks that focus on problem recognition and solution. The part of the curriculum on which the assessment is based is determined by the lecturer of the subject, the available working time is 45 minutes. | |
Detailed description of assessments performed during the examination period
Elements of the exam:
| Written partial exam | ||
| Obligation: | (partial) exam unit chosen by the student, the exam result assessed by other partial exam unit can be changed unrestrictedly | |
| Description: | A complex, written way of evaluating the competence-type competence elements of the subject and knowledge in the form of an exam. The exam may include theoretical questions to be explained, which examine lexical knowledge, essay questions, which understand the interpretation of each concept and the connections between them, and the ability to synthesize, as well as calculation tasks that focus on problem recognition and solution. The part of the curriculum on which the assessment is based is determined by the lecturer of the subject, the available working time is 2x45 minutes; | |
| Inclusion of mid-term results | ||
| Obligation: | (partial) exam unit chosen by the student, the exam result assessed by other partial exam unit can be changed restrictedly | |
| Description: | The mid-year result achieved in the current semester can be taken into account in the exam mark in 50% at the request of the student, if the student achieves at least 55% of the obtainable score. In this case, the working time available for the exam is 45 minutes and the part of the curriculum on which the remaining 50% of the assessment is based is the part of the total curriculum that was not the subject of the mid-year summative study assessment. The mid-year results can only be taken into account once in the current semester. | |
The weight of mid-term assessments in signing or in final grading
| ID | Proportion |
|---|---|
| Mid-term assessment No. 1 | 100 % |
The condition for signing is that the score obtained in the mid-year assessments is at least 40%.
The weight of partial exams in grade
| Type: | Proportion |
|---|---|
| Written partial exam | 100 % |
| Inclusion of mid-term results | 50 % |
Determination of the grade
| Grade | ECTS | The grade expressed in percents |
|---|---|---|
| very good (5) | Excellent [A] | above 95 % |
| very good (5) | Very Good [B] | 85 % - 95 % |
| good (4) | Good [C] | 70 % - 85 % |
| satisfactory (3) | Satisfactory [D] | 55 % - 70 % |
| sufficient (2) | Pass [E] | 40 % - 55 % |
| insufficient (1) | Fail [F] | below 40 % |
The lower limit specified for each grade already belongs to that grade.
Attendance and participation requirements
The lack of the value means that there is no attendance requirement.
At least 70% the exercises (rounded down) must be actively attended.
At least 85% of laboratory practices (rounded down) must be actively attended.
Special rules for improving, retaken and replacement
The special rules for improving, retaken and replacement shall be interpreted and applied in conjunction with the general rules of the CoS (TVSZ).
| Need mid-term assessment to invidually complete? | ||
| yes | ||
| The way of retaking or improving a summary assessment for the first time: | ||
| each summative assessment can be retaken or improved | ||
| Is the retaking-improving of a summary assessment allowed, and if so, than which form: | ||
| retake or grade-improving exam possible for each assesment separately | ||
| Taking into account the previous result in case of improvement, retaken-improvement: | ||
| out of multiple results, the best one is to be taken into account | ||
| Completion of unfinished laboratory exercises: | ||
| missed laboratory practices must be performed in the teaching term at pre-arranged appointment | ||
| Repetition of laboratory exercises that performed incorrectly (eg.: mistake in documentation) | ||
| incorrectly performed laboratory practice (e.g. Incomplete/incorrect report) can be corrected upon improved re-submission | ||
Study work required to complete the course
| Activity | hours / semester |
|---|---|
| participation in contact classes | 56 |
| mid-term preparation for practices | 7 |
| preparation for laboratory practices | 14 |
| preparation for summary assessments | 16 |
| exam preparation | 28 |
| altogether | 121 |
Validity of subject requirements
| Start of validity: | 2021. April 29. |
| End of validity: | 2028. July 15. |
Primary course
The primary (main) course of the subject in which it is advertised and to which the competencies are related:
Mechanical engineering
Link to the purpose and (special) compensations of the Regulation KKK
This course aims to improve the following competencies defined in the Regulation KKK:
Knowledge
- Student has the knowledge of the theories and contexts of fundamental importance in the field of engineering and of the terminology which underpins them.
- Student has the knowledge of metrology and measurement theory in the field of mechanical engineering.
- Student has the broad theoretical and practical knowledge, methodological and practical skills for the design, manufacture, modelling, operation and management of complex engineering systems and processes.
Ability
- Student has the ability to apply the general and specific mathematical, scientific and social principles, rules, relationships and procedures acquired in solving problems in the field of engineering.
- Student has the ability to approach and solve specific problems within student's field of specialisation in a multi-disciplinary and interdisciplinary manner.
- Student has the ability to process, organise, analyse and draw conclusions from information gathered during the operation of engineering systems and processes.
Attitude
- Student strives to carry out their work in a complex approach based on a systems and process-oriented thinking.
- Using student's technical knowledge, Student will seek to gain a better understanding of observable phenomena and to describe and explain their laws.
- Student strives to implement sustainability and energy efficiency requirements.
Independence and responsibility
- Student takes responsibility for the sub-processes under student's management.
- Student acts independently and proactively in solving professional problems.
- Student shares her acquired knowledge and experience through formal, non-formal and informal information transfer with those in her field.
Prerequisites for completing the course
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Knowledge type competencies
(a set of prior knowledge, the existence of which is not obligatory, but greatly facilitates the successful completion of the subject) |
Knows the ways of describing heat transfer processes, the basics of fluid mechanics. |
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Ability type competencies
(a set of prior abilities and skills, the existence of which is not obligatory, but greatly contributes to the successful completion of the subject) |
Able to process and evaluate measurement results. |