635-3036/01 – Heat Exchangers (VT)

Gurantor departmentDepartment of Thermal EngineeringCredits6
Subject guarantordoc. Ing. Marek Velička, Ph.D.Subject version guarantordoc. Ing. Marek Velička, Ph.D.
Study levelundergraduate or graduateRequirementCompulsory
Year1Semestersummer
Study languageCzech
Year of introduction2019/2020Year of cancellation
Intended for the facultiesFMTIntended for study typesFollow-up Master
Instruction secured by
LoginNameTuitorTeacher giving lectures
PR150 prof. Ing. Miroslav Příhoda, CSc.
VEL37 doc. Ing. Marek Velička, Ph.D.
Extent of instruction for forms of study
Form of studyWay of compl.Extent
Full-time Credit and Examination 2+3
Part-time Credit and Examination 16+0

Subject aims expressed by acquired skills and competences

Student will be able: - to categorize heat exchangers - to solve power and hydraulic losses or recuperators and regenerators - to illustrate ways of usage of thermal efficiency in determination of heat transfer surface of recuperator - to determine conditions of application of recuperative and regenerative heat exchangers - to design the basic parameters of the heat exchanger for specific operating conditions

Teaching methods

Lectures
Tutorials

Summary

Meaning of heat exchangers. Recuperators: the temperature of the medium along the heat exchange surface, the mean temperature gradient, the overall heat transfer coefficient, the heat output, the temperature of the heat exchange surface, the thermal efficiency of the parallel-flow and the counter-flow, the hydraulic calculation. Metal, ceramic, plastic and plate recuperators. Heat pipes. Regenerators.

Compulsory literature:

[1] KUPPAN, T. Heat Exchanger Design Handbook. New York: Marcel Dekker, 2000. ISBN 0-8247-9787-6. [2] WANG, L. SUNDÉN, B., MANGLIK, R. M. Plate Heat Exchangers: Design, Applications and Performance. Southampton: WIT Press, 2007. ISBN 185312737X. [3] HEWITT, G. F. Heat Exchanger Design Handbook 2008. New York: Begell House, 2009. ISBN 1567002595. [4] BEJAN, A., KRAUS, A. D. Heat Transfer Handbook. John Wiley & Sons, 2003. ISBN 978-0-471-39015-2.

Recommended literature:

[1] WATKINS, D. E. Heating services in buildings: design, installation, commissioning & maintenance. Chichester: Wiley-Blackwell, 2011. ISBN 978-0-4706-5603-7. [2] MacKAY, D. J. C. Sustainable Energy - without the hot air. Cambridge: UIT, 2008. [3] HENS, H. Building physics: heat, air and moisture: fundamentals and engineering methods with examples and exercises. 2nd ed. Berlin: Ernst & Sohn, 2012. ISBN 978-3-433-03027-1.

Way of continuous check of knowledge in the course of semester

Written test and oral exam.

E-learning

Other requirements

Basic knowledge of heat transfer and mechanics of fluids.

Prerequisities

Subject has no prerequisities.

Co-requisities

Subject has no co-requisities.

Subject syllabus:

• Classification of heat exchangers. The importance of heat exchangers, energy saving, fuel savings, the degree of recuperation, increasing combustion temperature, increase performance aggregate. • Thermal calculation of recuperator. The differential equation for the relationship between medium temperature and the size heat transfer surface. Solving equations for various cases 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. • Overall heat transfer coefficient for the ceramic and metal recuperators. 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-flow and counter-flow 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 recuperators. Operating conditions. • Plastic recuperators: material, overall heat transfer coefficient, pressure loss, advantages, failings. • Plate recuperators: types, overall heat transfer coefficient, advantages, failings. • 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 losses. Types of regenerators.

Conditions for subject completion

Full-time form (validity from: 2019/2020 Winter semester)
Task nameType of taskMax. number of points
(act. for subtasks)
Min. number of pointsMax. počet pokusů
Credit and Examination Credit and Examination 100 (100) 51
        Credit Credit 25  15
        Examination Examination 75  36 3
Mandatory attendence participation: Min. 80 % attendance on exercise.

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Conditions for subject completion and attendance at the exercises within ISP: Completion of all mandatory tasks within individually agreed deadlines.

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Occurrence in study plans

Academic yearProgrammeBranch/spec.Spec.ZaměřeníFormStudy language Tut. centreYearWSType of duty
2023/2024 (N0719A270004) Materials and technologies for energy industry K Czech Ostrava 1 Optional study plan
2023/2024 (N0719A270004) Materials and technologies for energy industry P Czech Ostrava 1 Optional study plan
2023/2024 (N0713A070004) Thermal energetics engineering TEZ K Czech Ostrava 1 Compulsory study plan
2023/2024 (N0713A070004) Thermal energetics engineering TEZ P Czech Ostrava 1 Compulsory study plan
2022/2023 (N0713A070004) Thermal energetics engineering TEZ P Czech Ostrava 1 Compulsory study plan
2022/2023 (N0713A070004) Thermal energetics engineering TEZ K Czech Ostrava 1 Compulsory study plan
2022/2023 (N0719A270004) Materials and technologies for energy industry P Czech Ostrava 1 Optional study plan
2022/2023 (N0719A270004) Materials and technologies for energy industry K Czech Ostrava 1 Optional study plan
2021/2022 (N0713A070004) Thermal energetics engineering TEZ P Czech Ostrava 1 Compulsory study plan
2021/2022 (N0713A070004) Thermal energetics engineering TEZ K Czech Ostrava 1 Compulsory study plan
2021/2022 (N0719A270004) Materials and technologies for energy industry P Czech Ostrava 1 Optional study plan
2021/2022 (N0719A270004) Materials and technologies for energy industry K Czech Ostrava 1 Optional study plan
2020/2021 (N0713A070004) Thermal energetics engineering TEZ K Czech Ostrava 1 Compulsory study plan
2020/2021 (N0713A070004) Thermal energetics engineering TEZ P Czech Ostrava 1 Compulsory study plan
2020/2021 (N0719A270004) Materials and technologies for energy industry K Czech Ostrava 1 Optional study plan
2020/2021 (N0719A270004) Materials and technologies for energy industry P Czech Ostrava 1 Optional study plan
2019/2020 (N0713A070004) Thermal energetics engineering TEZ P Czech Ostrava 1 Compulsory study plan
2019/2020 (N0713A070004) Thermal energetics engineering TEZ K Czech Ostrava 1 Compulsory study plan

Occurrence in special blocks

Block nameAcademic yearForm of studyStudy language YearWSType of blockBlock owner

Assessment of instruction



2020/2021 Summer