Course detail

Compact Heat Exchangers

FSI-IKV Acad. year: 2021/2022 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

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

Credit condition: active participation in seminars.
The exam is awarded on the basis of elaboration and defense of a semester project.

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

Type of course unit

 

Lecture

26 hours, optionally

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.