Energijska učinkovitost peći za taljenje i držanje aluminija

master's thesis

• Title (english): Energy effieciency of aluminium melting and holding furnaces
• Author: Lorena Mrkobrada
• Mentor: Martina Lovrenić-Jugović (mentor)
• Mentor: Ladislav Lazić (komentor)
• Mentor: Željko Grubišić (pomoć pri izradi, neposredni voditelj)
• Committee member: Ivan Jandrlić (predsjednik povjerenstva)
• Committee member: Martina Lovrenić-Jugović (član povjerenstva)
• Committee member: Ladislav Lazić (član povjerenstva)
• Committee member: Jakov Baleta (član povjerenstva)
• Committee member: Damir Hršak (član povjerenstva)
• Granter: University of Zagreb; Faculty of Metallurgy; Sisak
• Defense date and country: 2019-09-20, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Metallurgy

Abstract

U ovome radu analizirana je energijska uĉinkovitost peći za taljenje aluminija te mogućnost povećanja energijske uĉinkovitosti na peći za drţanje taline aluminija u talionici aluminija CIAL d.o.o. U teorijskom dijelu opisane su peći za taljenje aluminija te njihov naĉin rada. Detaljnije je opisana izmjena topline u peći tijekom taljenja, proces izgaranja te problematika peći uzimajući u obzir utjecaj tih procesa na energijsku uĉinkovitosti peći. U eksperimentalnom dijelu, u svrhu analize energijske uĉinkovitosti peći za taljenje aluminija, prikazan je utjecaj temperature izlaznih dimnih plinova i viška kisika na uĉinkovitost izgaranja, a u svrhu analize energijske uĉinkovitosti peći za drţanje taline aluminija analizirana je uĉinkovitost izgaranja u odnosu na temperaturu dimnih plinova za razliĉite sadrţaje kisika u zraku sa ili bez predgrijanja zraka. Za obje peći napravljena je i ekonomska analiza potrošnje energenata.

Abstract (english)

This paper analyses the energy efficiency of aluminium melting furnace and the possibility of increasing the energy efficiency of aluminium holding furnace in an aluminium smelter CIAL d.o.o. Theoretical part describes the aluminium melting furnaces and their operation, as well as heat exchange in the furnace during melting, combustion process and furnace problems considering the impact of these processes on the energy efficiency of the furnace. In the experimental part the effect of the temperature of the exhaust flue gases and excess oxygen on the combustion efficiency is shown for the purpose of energy efficiency analysis of an aluminium melting furnace. Moreover, combustion efficiency in relation to the flue gas temperature for different oxygen contents in the air with or without air preheating was analysed for energy efficiency analysis of an aluminium holding furnace . Finally, an economic analysis of energy consumption was made for both furnaces.

• Keywords: energijska učinkovitost; peć za taljenje aluminija; peć za držanje taline aluminija; učinkovitost izgaranja
• Keywords (english): energy efficiency; aluminium melting furnace; aluminium holding furnace; combustion efficiency
• Language: croatian
• URN:NBN: urn:nbn:hr:115:013691
• Study programme: Title: Graduate study program Metallurgy; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka metalurgije (magistar/magistra inženjer/inženjerka metalurgije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-09-26 11:35:40