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A THERMAL NETWORK MODEL FOR AN EVAPORATIVE COOLING SYSTEM COMBINED WITH A SOLAR CHIMNEY
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
2016 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
En termisk nätverksmodell för ett evaporationskylsystem kombinerat med en solskorsten (Swedish)
Abstract [sv]

Syftet med denna studie är att, genom termiskt nätverksmodellering för kombinerad värme och massöverföring, undersöka möjligheten att integrera en solskorsten med en evaporationskyl. Avsikten är att potentiellt öka luftflödet runt kylen samt dess kylförmåga. Jämviktstillstånd samt transienta förlopp simuleras med hjälp av mjukvaruprogrammet MATLAB. Utfallet av studien indikerar att föreslagna tillämpningsområdet för solskorstenen ökar kylpotentialen för evaporationskylen. Solskorstenen kan generera ett tillräckligt luftflöde på mer än 0.5 m/s. Med en omgivningstemperatur på 30 C°, luftfuktighet på 40 % och ett luftflöde på 0.5 m/s kan evaporationskylen bibehålla 25 % lägre förvaringstemperatur gentemot omgivningstemperaturen.

Abstract [en]

The purpose of this study is to, through thermal network modelling and coupled heat and mass transfer analysis, investigate the cooling process of an evaporation fridge combined with a solar chimney. The solar chimney is connected to the evaporation fridge in an attempt to increase the airflow, around the evaporation fridge, and the cooling capacity. Steady state and transient regimes are simulated in the software MATLAB. The findings indicate that utilizing a solar chimney for the stated purposes will increase the cooling potential of the evaporation fridge. The solar chimney is able to produce a satisfactory air flow velocity of more than 0.5 m/s. With an ambient temperature of 30 C°, relative humidity at 40 % and an air flow rate of 0.5 m/s the evaporation fridge maintains a 25 % lower storage temperature compared to the ambient temperature.

Place, publisher, year, edition, pages
2016. , 57 p.
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-192670OAI: oai:DiVA.org:kth-192670DiVA: diva2:971809
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Available from: 2016-09-19 Created: 2016-09-19 Last updated: 2016-09-19Bibliographically approved

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