prikaz prve stranice dokumenta Aksijalna turbina za iskorištavanje energije uzgonskih sila u dimnjaku termoelektrane
  Download
PDF 13.7 MB
master's thesis
Aksijalna turbina za iskorištavanje energije uzgonskih sila u dimnjaku termoelektrane
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. urn:nbn:hr:235:311129
Horvat, Anja
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

Cite this document

Horvat, A. (2021). Aksijalna turbina za iskorištavanje energije uzgonskih sila u dimnjaku termoelektrane (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:311129

Horvat, Anja. "Aksijalna turbina za iskorištavanje energije uzgonskih sila u dimnjaku termoelektrane." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:235:311129

Horvat, Anja. "Aksijalna turbina za iskorištavanje energije uzgonskih sila u dimnjaku termoelektrane." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:235:311129

Horvat, A. (2021). 'Aksijalna turbina za iskorištavanje energije uzgonskih sila u dimnjaku termoelektrane', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 25 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:311129

Horvat A. Aksijalna turbina za iskorištavanje energije uzgonskih sila u dimnjaku termoelektrane [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2021 [cited 2024 December 25] Available at: https://urn.nsk.hr/urn:nbn:hr:235:311129

A. Horvat, "Aksijalna turbina za iskorištavanje energije uzgonskih sila u dimnjaku termoelektrane", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:235:311129

Metadata
TitleAksijalna turbina za iskorištavanje energije uzgonskih sila u dimnjaku termoelektrane
Title (english)Axial turbine for utilization of buoyancy force energy in chimney of thermal powerplant
AuthorAnja Horvat
MentorŽeljko Tuković (mentor)
Committee memberDarko Smoljan (predsjednik povjerenstva)
Committee memberTea Žakula (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2021-07-16, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Process Energy Engineering
Abstract
Provedena je analiza mogućnosti iskorištavanja energije uzgonskih sila koje se javljaju u dimnjaku termoelektrane primjenom cijevne aksijalne turbine, pri čemu se mehanički rad dobiva propuštanjem svježeg zraka iz okoline u dimnjak preko turbine. Nakon određivanja sastava produkata izgaranja za zadano plinovito gorivo, određeni su projektni parametri turbine provođenjem numeričkih simulacija strujanja smjese vrućih dimnih plinova i svježeg zraka kroz dimnjak i cijevnu aksijalnu turbinu, gdje je rotor turbine opisan modelom aktuatorskog diska. Oblikovanje profila rotorske lopatice aksijalne turbine je provedeno primjenom metodologije koja se temelji na numerički određenim aerodinamičkim karakteristikama dvodimenzionalne turbinske rešetke uz korištenje uvjeta slobodnog vrtloga. Postupak oblikovanja je implementiran u programskom jeziku Python pomoću kojeg je povezan modul za definiranje geometrije rešetke s računalnim programom za diskretizaciju prostorne domene cfMesh® i računalnim programom za provođenje simulacija strujanja OpenFOAM®. Konstrukcija cijevne aksijalne turbine čiji se rotor sastoji od novo-oblikovanih rotorskih lopatica provjerena je provođenjem numeričkih simulacija trodimenzionalnog strujanja primjenom modela rotirajućeg koordinatnog susatava. Rezultati simulacija pokazuju umjereno odstupanje snage turbine od zadane snage što se može objasnit odstupanjem od pretpostavke dvodimenzionalnog strujanja korištene prilikom oblikovanja rotorske lopatice.
Abstract (english)
Possibility of buoyancy force energy utilization in a chimney of a thermal powerplant using the axial-flow pipe turbine has been analysed. Mechanical work is obtained by admitting the fresh air flow from the environment to the chimney via the turbine. After determination of the flue gas composition for the given gas fuel, turbine design parameters where determined by performing numerical simulations of the fresh air and flue gas mixture flow through the chimney and the pipe turbine. In these simulations the turbine rotor is represented by an actuator disk model. Forming of the axial turbine rotor blade is carried out using methodology which is based on numerically determined aerodynamics characteristics of two-dimensional cascades and satisfaction of the free-vortex condition. This process is implemented in the Python programming language which connects the module for defining the geometry of the cascade with the meshing software cfMesh® and the fluid flow simulation software OpenFOAM®. The design of the axial-flow pipe turbine, whose rotor is composed of the newly-formed rotor blades, is tested by carrying out the three-dimensional flow simulation using the Multiple Reference Frames (MRF) model. Moderate difference between turbine power and default power is noticed. This is due to deviation from the two-dimensional flow assumption used in the rotor blade forming procedure.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:311129
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2021-07-13 18:40:56