Course detail
Compact Heat Exchangers
FSI-IKV Acad. year: 2019/2020 Winter semester
The course is concerned with the following topics: Classification of heat exchangers (HE). Basic relationships for heat transfer in HE. Efficiency of finned surfaces. Methods of heat transfer enhancement. Methods of HE calculations – LMTD and epsilon-NTU methods.
Pumping power and pressure drop in HE. Correlations for heat transfer in single-phase HE. Fouling and corrosion.
Language of instruction
Czech
Number of ECTS credits
4
Supervisor
Department
Learning outcomes of the course unit
Types of heat exchanges. Principles and method of their design. Practical knowledge on how to calculate and design heat exchanger.
Prerequisites
Fundamentals of fluid mechanics (laminar and turbulent flow) in channels and tube bundles and fundamental mechanisms of heat transfer (conduction, convection, radiation).
Planned learning activities and teaching methods
The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures.
Assesment methods and criteria linked to learning outcomes
The condition of course-unit credit: credit test.
The exam: combined – written and oral.
Written part: computational solving of 2 problems, with assessment 0-10 points.
Oral Part: 1 theoretical question, with assessment 0-5 points.
Final assessment: „A“ – min. 22 pts.
„B“ – min. 19 pts.
„C“ – min. 16 pts.
„D“ – min. 13 pts.
„E“ – min. 10 pts.
Aims
The course objective is to provide students with information on principles of design, and operation of heat exchanges of different types and make.
Specification of controlled education, way of implementation and compensation for absences
Participation in classes is required and checked by the teacher.
Absence can be compensated for via additional computational tasks.
The study programmes with the given course
Programme M2I-P: Mechanical Engineering, Master's
branch M-TEP: Environmental Engineering, compulsory
Type of course unit
Lecture
26 hours, compulsory
Teacher / Lecturer
Syllabus
1. Heat exchangers (HEX) – function, principles of operation, classification.
2. Heat balance of HEX. Thermal resistance and overall HTC.
3. Heat exchangers design methods (LMTD, epsilon – NTU)
4. Computational relationships for heat transfer and pressure drops.
5. Tube in tube heat exchanger.
6. Shell and tubes heat exchangers.
7. Plate heat exchangers.
8. Reynolds and Chilton – Colburn analogy.
9. Compact heat exchangers.
10. Flues gas heat exchangers.
11. Two phase heat exchangers
12. Operational problems. Fouling and corrosion.
13. Numerical methods for he heat exchanger analysis.
Computer-assisted exercise
13 hours, compulsory
Teacher / Lecturer
Syllabus
1-2. Calculation of heat balance of heat exchanger (HE) – LMTD method.
3-4. Calculation of heat balance of HE – epsilon-NTU method.
5-6. Calculation of compact HE.
7-8. Calculation of pressure drop in HE.
9-11. Calculation of special cases.
12-13. Course-unit credit test.