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Performance Improvement of a Diesel Engine Power Plant with Optimal Utilization of Waste Heat
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering.
2016 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Due to temperature and humidity deviations from the standard ISO conditions in real operational conditions in the tropical countries the performance of diesel engines used for power generation drops significantly. One of the reasons for dropping the engine performance is due to engine de-rating, hence increasing the specific fuel consumption. The present study was undertaken to develop a model for predicting whether the prevailing site conditions cause de-rating at a specific power plant in Sri Lanka.

The model was developed with the aid of recorded information in previous studies and was validated with site conditions revenant to a selected location in Sri Lanka. In the study a set of equations was developed corresponding to different temperatures to predict engine de-rating as a function of relative air humidity.

To achieve the required standard conditions in view of avoiding any de-rating of the engines, the charge air temperature needed to be reduced. For this purpose an absorption chiller system was proposed and designed to be operated with the waste heat recovery from the power plant. It proved that implementation of such a system is technically and economically feasible with a simple payback period of three and a half years on the capital invested.

This derived model was applied to actual operational data of the selected power plant and finally it was found a derated power of 417 kW could be fully recovered by conditioning the temperature and humidity of charge air to obtain the ISO conditions, giving a benefit equivalent fuel savings of 2233 kg/day.

Place, publisher, year, edition, pages
2016. , 71 p.
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:hig:diva-21972OAI: oai:DiVA.org:hig-21972DiVA: diva2:943568
Subject / course
Energy systems
Educational program
Energy systems - master programme
Presentation
2016-04-05, 09:35 (English)
Supervisors
Examiners
Available from: 2016-07-12 Created: 2016-06-28 Last updated: 2016-07-12Bibliographically approved

Open Access in DiVA

fulltext(3407 kB)1565 downloads
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File name FULLTEXT01.pdfFile size 3407 kBChecksum SHA-512
a04646afaac5ffebbec38722b12cc0bc52fa6fbe4c89f4ef669b321307aacfaf50df61f847e0566d0c8d0883b1175e3cca78131a8754031eae70529b0fdbfff9
Type fulltextMimetype application/pdf

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Department of Building, Energy and Environmental Engineering
Energy Systems

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CiteExportLink to record
Permanent link

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