Skip to main content
Skip header
Terminated in academic year 2020/2021

Heat Exchangers

Type of study Follow-up Master
Language of instruction Czech
Code 635-0818/01
Abbreviation VT
Course title Heat Exchangers
Credits 6
Coordinating department Department of Thermal Engineering
Course coordinator prof. Ing. Miroslav Příhoda, CSc.

Subject syllabus

Lectures:
Significance of heat exchangers, energy savings, fuel savings, the degree of recovery, increasing combustion temperature, performance engine.
Recuperators - thermal and hydraulic calculation. Derivation of differential equations for the relationship between medium temperature and size heat transfer surface.
Solving this equation for various cases of boundary conditions.
Dependence of temperature difference between the hot and cold streams on the size of the heat transfer surface. Calculation of the mean temperature difference.
Heat transfer coefficient for the ceramic and metal heat exchangers. Influence of heat transfer coefficients on the overall heat transfer coefficient
Heat rate of recuperator. Temperature heat transfer surfaces in the consideration or neglecting the thermal resistance of heat transfer surfaces, a criteria expression.
The definition of heat exchanger effectiveness. Determination of heat exchanger effectiveness for the parallel and counterflow cases for different ratios between total heat capacities.
Hydraulic calculation. Pressure loss by friction, local, geometric. Pressure losses resulting from non-isothermal flow mediums.
Types of metal and ceramic heat exchangers.
Operating conditions of metal heat exchangers. Heat pipes: the working fluid, process temperature and radial heat flow.
Regenerators - Thermal calculation. The amount of heat transmitted. The coefficient of heat transfer. Hydraulic calculation. Pressure loss.
Types of regenerators.

Tutorials:
Heat rate of heat exchanger.
Heat transfer of coefficient by convection and radiation, wall temperature heat exchanger.
Determination of the basic dimensions of heat exchanger.
Heat exchanger effectiveness, fuel utilization factor, recovery factor.
Calculation of heat transfer surfaces of heat exchanger.
Hydraulic calculation and pressure loss of heat exchanger.
The balance equation of the regenerator, types of trellis.
Excursion to the Department of Thermal Engineering Laboratories, familiarization with various types of heat exchangers.
The calculation program to obtain basic parameters of the heat exchanger for the parallel and counterflow cases.
Credit.

E-learning

http://katedry.fmmi.vsb.cz/635/;
There is a continuous expansion of e-learning elements into teaching.

Literature

LIENHARD IV, J. H., LIENHARD V, J. H. A Heat Transfer Textbook, 4th edition - chapter 3. http://web.mit.edu/lienhard/www/ahtt.html

Advised literature

KUPPAN, T. Heat Exchanger Design Handbook. Marcel Dekker, Inc. New York - Basel, 2000. ISBN 0-8247-9787-6.