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Frikyla: En möjlighet för Östersjöfarten att spara energi?
Linnaeus University, Faculty of Technology, Kalmar Maritime Academy.
Linnaeus University, Faculty of Technology, Kalmar Maritime Academy.
2017 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

För att hålla ett behagligt inomhusklimat på fartyg krävs kylning under den varma tiden på året. Denna kylning kräver energi. Detta arbete är en undersökning om huruvida denna energiåtgång kan minskas genom så kallad frikylning. ROPAX-färjan Finntrader som trafikerar linjen Malmö–Travemünde har använts som exempel.

Undersökningen utfördes genom att skapa en beräkningsmodell där ett köldbärarsystem med möjlighet till frikylning kopplades in i Finntraders nuvarande HVAC-system, tillsammans med nuvarande kylmaskiner. Statistik över lufttemperatur, luftfuktighet och sjövattentemperatur för perioden 2013–2015 införskaffades. Denna statistik fördes in i beräkningsmodellen. Resultatet av beräkningarna blev att en viss mängd energi kunde sparas med frikylning, hur mycket beroende på värmeväxlarnas effektivitet.

Mängden energi som kunde sparas var förhållandevis liten jämfört med kostnaden för de komponenter modellen krävde.

Abstract [en]

To maintain a comfortable climate on board ships, cooling is necessary during the warm period of the year which requires energy. This thesis is a survey about whether so-called free cooling could reduce this energy consumption. The ROPAX-ferry Finntrader trafficking the route Malmö–Travemünde has been used as an example.

This survey was carried out by creating a calculation model in which a brine system with a possibility of free cooling was connected to Finntrader’s current HVAC-system, alongside the current chillers. Statistics of air temperature, air humidity and sea water temperature was acquired for the period 2013-2015 and were inserted into the calculation model. These calculations showed that a certain amount ofenergy could be saved with free cooling, how much depending on the effectiveness of the heat exchangers.

The amount of energy that could be saved was quite small compared to the cost of the components required by the model.

Place, publisher, year, edition, pages
2017.
Keywords [en]
Free cooling, Baltic sea, HVAC, Air conditioning, fuel saving.
Keywords [sv]
Frikyla, Östersjön, HVAC, luftkonditionering, bränslebesparing
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:lnu:diva-62602OAI: oai:DiVA.org:lnu-62602DiVA, id: diva2:1091132
Subject / course
Chief Engineer
Educational program
Marine Engineering Programme (4 years) with onboard practical training placement, 180 credits
Supervisors
Examiners
Available from: 2017-04-26 Created: 2017-04-26 Last updated: 2017-04-26Bibliographically approved

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CiteExportLink to record
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