Course detail

Compact Heat Exchangers

FSI-IKVAcad. year: 2019/2020

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

Mode of study

Not applicable.

Guarantor

Ing. Jiří Hejčík, Ph.D.

Department

Energy Institute (EÚ)

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).

Co-requisites

Not applicable.

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.

Course curriculum

Not applicable.

Work placements

Not applicable.

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.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

KAKAÇ, Sadik. Heat exchangers: selection, rating, and thermal design. 2nd ed. Boca Raton: CRC Press, 2002, 501 s. ISBN 08-493-0902-6. (EN)
KAYS, W. M. a A. L. LONDON. Compact heat exchangers. Repr. ed. 1998 with corrections. Malabar, Fla.: Krieger Pub. Co., 1998. ISBN 978-1575240602. (EN)
VDI heat atlas. 2nd ed. New York: Springer, 2010. ISBN 978-3-540-77876-9. (EN)

Recommended reading

Not applicable.

Classification of course in study plans

  • Programme M2I-P Master's

    branch M-TEP , 2 year of study, winter semester, compulsory

Type of course unit

 

Lecture

26 hod., compulsory

Teacher / Lecturer

Ing. Jiří Hejčík, Ph.D.

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 hod., compulsory

Teacher / Lecturer

Ing. Jiří Hejčík, Ph.D.

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.