Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Energy flow model for a scrapper conveyor unit
KTH, School of Industrial Engineering and Management (ITM), Sustainable production development.
2019 (English)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesisAlternative title
Energiflödesmodell till en skraptransportörsmodul (Swedish)
Abstract [en]

Värmevärden AB is an energy company that distributes district heating. One of their challenges today is to reduce the energy losses and wear that occur in the plant's scrapper conveyor unit. The conveyor belt is in constant motion whether it is transporting fuel or going unloaded at idle. An understanding of the module's energy flow needs to be mapped.

An energy flow behavior model for the scrapper conveyor unit is presented. The energy flow in the startup sequence when the belt runs at idle and at full load is simulated. The simulations visualize the velocity and acceleration of the belt as a function of time and the current flow in the engine when getting started. The model allows changes on various parameters such as engine velocity, current limitations, work efficiency and enables the calculation of necessary material to achieve a desired power delivery.

With a current-limited engine of 140 [A], a lower acceleration is obtained as the belt transports the fuel masses. Energy losses are also reduced as the belt is started by their own mass when transportation is needed. This means that the wear on the components of the plant decreases as transportation takes a more controlled form.

Abstract [sv]

Värmevärden AB är ett energibolag som distribuerar fjärrvärme. En av deras utmaningar idag är att minska energiförlusterna och slitaget som uppstår i anläggningens skrapstransportörs modul. Transportbandet är i konstant rörelse vare sig det transporterar bränsle eller går olastad i tomgång. Förståelse för modulens energiflöde behöver kartläggas.

En beteendemodell för skraptransportörens modul presenteras. Genom analys av energiflödet i systemet simuleras startförloppet när bandet körs i tomgång och vid full last. Simuleringarna visualiserar bandets hastighet och acceleration som funktion av tid och även motorns strömförlopp under uppstartsfasen. Modellen tillåter ändringar på diverse parametrar såsom motorns varvtal, strömbegränsning, verkningsgrad och möjliggör även framräkningen av nödvändigt material för att uppnå en viss leverans uteffekt.

Med en strömbegränsad motor på 140 [A] fås en lägre acceleration när bandet transporterar bränslemassorna. Energiförlusterna minskar också eftersom bandet sätts igång av massornas egenvikt när transporteringen behövs. Detta medför att slitaget på anläggningens komponenter minskar i och med att transporten sker i mera kontrollerade former.

Place, publisher, year, edition, pages
2019.
Keywords [en]
Scrapper conveyor unit, behavior model, simulations, energy flow, empty load, full load
Keywords [sv]
Skraptransportör, beteendemodell, simulering, energiflöde, tomgång, full last
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-257954OAI: oai:DiVA.org:kth-257954DiVA, id: diva2:1349355
Supervisors
Examiners
Available from: 2019-09-09 Created: 2019-09-09 Last updated: 2019-09-09Bibliographically approved

Open Access in DiVA

fulltext(2343 kB)8 downloads
File information
File name FULLTEXT01.pdfFile size 2343 kBChecksum SHA-512
7e33a170d92857f2af8ee191f1d8a1c3ca4dfa8d2b10ec4e754376f4a06002df52e703c6cee1e272e585d44ce6aeee6d8529cc88cb8cf939ac0641541d256631
Type fulltextMimetype application/pdf

By organisation
Sustainable production development
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 8 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 40 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf