Course detail

Noise and Vibrations

FSI-IHVAcad. year: 2024/2025

The following topics will be dealt with: Sources and sound propagation in closed and free areas. Monitoring and reduction of the noise in the living and working environment. Generation of vibrations, sensors and instruments for vibration measurement. Influence of the noise and vibrations to human health condition. Standards and limits. Practical acoustical measurements in common situations.

Language of instruction

Czech

Number of ECTS credits

4

Mode of study

Not applicable.

Guarantor

prof. Ing. Jan Jedelský, Ph.D.

Department

Energy Institute (EÚ)

Entry knowledge

Oscillations. Simple harmonic motion. Superposition of harmonic oscillations. Waves. Types of waves: Longitudinal and transversal waves. Plane and spherical waves. Linear polarized waves. Superposition and interference of waves.

Rules for evaluation and completion of the course

To receive a course-unit credit, a student has to attend all laboratory measurements and to hand over the reports. The exam has 2 parts: oral and written (theory and a solution of a problem).
A teacher checks the attendance in labs stated in the timetable. The form and the date of the compensation of missed lessons are specified by the teacher.

Aims

The aim of the course is to make students acquainted with problems caused by noise and vibrations so that they will be able to monitor the sound fields and vibrations, to measure relevant physical quantities and apply theoretical laws for their reduction. Acquiring basic knowledge about standards and regulation limits.
Knowledge of basic physical quantities for description of noise and vibrations in the working and living environment. Basic overview of standards and regulations concerning the measurement and evaluation of the noise and vibrations. Basic information about techniques for decreasing the noise and vibrations.

Study aids

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

BHATIA, A. Overview of Noise Control and HVAC Acoustic in Buildings. Vibrationdata [online]. [2012] [cit. 2014-04-11]. Dostupné z: http://www.vibrationdata.com/tutorials2/m206content.pdf (EN)
MIŠUN, V. Vibrace a hluk. Brno : Vysoké učení technické v Brně, Fakulta strojního inženýrství, 2005. ISBN 80-214-3060-5. (CS)
NOVÝ, Richard. Hluk a chvění. 3.vyd. Praha: Vydavatelství ČVUT, 2009, 389 s. ISBN 80-01-04347-9. (CS)
NOVÝ, Richard. Ventilátory. Vyd. 3., přeprac. V Praze: Nakladatelství ČVUT, 2007, 104 s. ISBN 978-80-01-03758-4. (CS)
SZÉKYOVÁ, Marta, Karol FERSTL, Richard NOVÝ. Větrání a klimatizace. Bratislava: JAGA GROUP, s.r.o., 2006. 359 s. ISBN 80-8076-037-3. (CS)
Ver, I.L, Beranek, L.L.: Noise and Vibration Control Engineering: Principles and Applications, 2nd Edition. McGraw-Hill, Inc., 2005. ISBN: 978-0-471-44942-3 (EN)

Recommended reading

SMETANA, Ctirad, et al. Hluk a vibrace: Měření a hodnocení. 1. Vydání. Praha 1: Sdělovací technika, 1998. 188 s. ISBN 80-901936-2-5.
VAŇKOVÁ, Marie a kolektiv. Hluk, vibrace a ionizující záření v životním a pracovním prostředí část I. 1.vyd. Brno: PC-DIR, spol. s.r.o., 1995. 140 s. ISBN 80-214-0695-X. (CS)
VAŇKOVÁ, Marie a kolektiv. Hluk, vibrace a ionizující záření v životním a pracovním prostředí část II. 1.vyd. Brno: PC-DIR, spol. s.r.o., 1996. 161 s. ISBN 80-214-0818-9. (CS)

Elearning

eLearning: currently opened course

Classification of course in study plans

  • Programme N-ETI-P Master's

    specialization TEP , 2 year of study, winter semester, compulsory

  • Programme C-AKR-P Lifelong learning

    specialization CZS , 1 year of study, winter semester, elective

Type of course unit

 

Lecture

26 hod., optionally

Teacher / Lecturer

prof. Ing. Jan Jedelský, Ph.D.

Syllabus

Noise as a pollutant factor of the living and working environment. Sources of the noise.
Basic concepts and quantities. Sound field and its energy. Analysis of acoustic signals. 1/1 oct and 1/3 oct frequency analysis. Sound propagation in free space and closed area.
Sound field of several sources. Sound power. Directional emission. Noise of air-conditioning machines. Sound mufflers.
Noise reduction of machines. Absorption construction.
Instrument and rooms for measurement of the sound. Actual directives and limits for the noise.
Generation of the vibrations. Basic concepts and quantities of mechanical vibrations. Measurement of vibrations. Sensors and instruments. Diagnostics and monitoring of machines in operation. Measurement of the impact of the vibration on a human.
Methods for reducing vibrations.
Currentl directives and vibrations limits.

Software support in noise and vibration problems

noise and vibration of HVAC systems

Laboratory exercise

13 hod., compulsory

Teacher / Lecturer

Ing. Milan Malý, Ph.D.

Syllabus

Measurement of the traffic noise.
Measurement of the acoustic power of the noise source.
Measurement of the sound isolation characteristics of the construction.
Analysis of the mechanical vibrations of the engine in dependence of operational revolutions.
Influence of the absorption layer on mechanical vibration transmission from noise source to installation pad.

Elearning

eLearning: currently opened course