search query: @instructor Tapola, Markku / total: 2
reference: 1 / 2
« previous | next »
Author:Räikkälä, Jaakko
Title:Valimoiden energiatehokkuuden arvioiminen
Evaluation of energy efficiency in foundries
Publication type:Master's thesis
Publication year:2010
Pages:70 s. + liitt. 5      Language:   fin
Department/School:Insinööritieteiden ja arkkitehtuurin tiedekunta
Main subject:Energiatalous ja voimalaitostekniikka   (Ene-59)
Supervisor:Ahtila, Pekka
Instructor:Tapola, Markku
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
Instructions

Reading digital theses in the closed network of the Aalto University Harald Herlin Learning Centre

In the closed network of Learning Centre you can read digital and digitized theses not available in the open network.

The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/

You can read theses on the Learning Centre customer computers, which are available on all floors.

Logging on to the customer computers

  • Aalto University staff members log on to the customer computer using the Aalto username and password.
  • Other customers log on using a shared username and password.

Opening a thesis

  • On the desktop of the customer computers, you will find an icon titled:

    Aalto Thesis Database

  • Click on the icon to search for and open the thesis you are looking for from Aaltodoc database. You can find the thesis file by clicking the link on the OEV or OEVS field.

Reading the thesis

  • You can either print the thesis or read it on the customer computer screen.
  • You cannot save the thesis file on a flash drive or email it.
  • You cannot copy text or images from the file.
  • You cannot edit the file.

Printing the thesis

  • You can print the thesis for your personal study or research use.
  • Aalto University students and staff members may print black-and-white prints on the PrintingPoint devices when using the computer with personal Aalto username and password. Color printing is possible using the printer u90203-psc3, which is located near the customer service. Color printing is subject to a charge to Aalto University students and staff members.
  • Other customers can use the printer u90203-psc3. All printing is subject to a charge to non-University members.
Location:P1 Ark Aalto  4548   | Archive
Keywords:foundry
energy efficiency index
valimo
energiatehokkuusindeksi
energiatehokkuus
Abstract (eng): Iron casting is very energy intensive production.
A lot of surplus heat is released from the processes into the indoor air.
The surplus heat is removed from the foundry buildings in ventilation air without heat recovery.
Premises of the foundries could be heated with the surplus heat applying heat recovery.
Still the heating of the premises is the biggest energy consuming section in Finnish foundries.
According to the energy analysis results carried out by AX Consulting the energy savings potential is a third.
In Motiva statistics energy savings potential of metal industry factories is 18 %.

The object of this thesis was to create a tool for evaluating the energy efficiency of foundries.
This tool makes possible to compare foundries with each other.
The tool for evaluating the energy efficiency of foundries is called energy efficiency index and it is based on production specific energy consumption.
This thesis is focused to iron and steel casting but the energy efficiency index can be calculated in the same way for the metal casting foundries as well.

One object in developing the energy efficiency index was to keep it flexible and enable the comparison between different kinds of foundries.
That was the argument for calculating the foundry's unit processes separately.
With results from the separate processes we can calculate the energy efficiency index for the whole foundry.
The thesis also contains valuation methods for evaluating separate foundry processes.

Evaluating of energy efficiency by using energy efficiency index is carried out for a steel foundry and an iron foundry in this thesis.
Results from these calculations are presented in the final paragraph of this thesis.
Abstract (fin): Valimot kuluttavat tuotannossaan paljon energiaa, joka vapautuu pääosin lämpönä sisäilmaan ja se poistetaan valimosta pääasiassa ilmanvaihdon mukana.
Tehokkaalla lämmöntalteenotolla valimon tilat voitaisiin lämmittää prosessista vapautuvalla lämmöllä.
Tilojen lämmitys on monissa valimoissa suurin yksittäinen energiaa kuluttava kohde.
Valimoiden energiakustannusten säästöpotentiaali on kolmanneksen luokkaa AX-Suunnittelun suorittamissa analyysikohteissa.
Motivan tilastoima metalliteollisuuden keskiarvo on 18 %.

Tässä työssä on kehitetty valimoiden energiatehokkuuden arvioimiseksi työkalua, jolla eri valimoita voitaisiin vertailla energian käytön osalta.
Energiatehokkuuden arvioimiseksi kehitettiin työkalu, energiatehokkuusindeksi, joka perustuu valimon ominaisenergiankulutukseen.
Tässä työssä on keskitytty ainoastaan rauta- ja teräsvalimoihin, mutta samaa laskentamallia voidaan käyttää myös metallivalimoissa.

Energiatehokkuusindeksistä pyrittiin tekemään käytöltään joustava ja mahdollistamaan erilaisten valimoiden vertailu.
Tästä syystä laskeminen suoritetaan prosessikohtaisesti, mikä mahdollistaa yksittäisten prosessien ja koko valimon vertailun.
Samalla on kehitetty myös arviointiperusteita valimoiden yksittäisten prosessien energiatehokkuuden arvioimiseksi.

Energiatehokkuuden arviointi energiatehokkuusindeksiä käyttäen on työssä suoritettu yhdelle rautavalimolle ja yhdelle teräsvalimolle.
Näiden arvioinnissa saatuja tuloksia on esitelty työn lopussa.
ED:2010-10-27
INSSI record number: 41237
+ add basket
« previous | next »
INSSI