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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Charging for Reduced Climate Emissions and a Living countryside

Tysk Hedlund, Jonas, Svedlind, Tone, Kembro, Isabelle, Yngvesson, Karolina January 2023 (has links)
The purpose of this project is to create a map showcasing the distribution of charging stations in the surrounding areas of Uppsala city in Uppsala Municipality. Additionally, the project examines the expected development of electric car utilization, identifies essential requirements, and highlights significant actors driving this development. Through an analysis of factors, such as demographic data, geographical data, car fleet data, car density and travel patterns, the project seeks to gain insight into the present and future usage patterns of electric cars. By understanding these factors, the research contributes to a better understanding of the dynamics surrounding the adoption of electric cars outside cities. Moreover, this project provides information on the optimal placement of charging infrastructure to facilitate the transition towards electric mobility. Calculations and assumptions are made to calculate the total number of electric cars in Uppsala city's surrounding areas in 2040. Based on this number, the total installed public power capacity needed is calculated in accordance with an EU regulation called AFIR. The total capacity is distributed on five different power capacities to match the need at each location. To achieve this, key actors have been examined. In addition, development and key actors in Norway are analyzed to examine similarities and to give a brief view into the future.  The results indicate that there will be a significant increase of electric cars in Uppsala Municipality. Therefore, expanding the charging infrastructure is shown to be essential. Due to the expected high usage of home charging outside cities, public charging is believed to be mostly necessary for tourists and passersby. Nevertheless, there are uncertainties that could influence the development of electric cars, which in turn would have an impact on the results. Finally, there follows a discussion both on the results and factors which could have affected the model.
2

En sammanställning av problem i hushåll i Linga Linga, Moçambique : Samt utvärdering av möjliga tekniska lösningar / A summary of problems in households in Linga Linga, Mozambique : As well as an evaluation of possible technical solutions

Eriksson, Erica, Johansson Gunnarsson, Sofia January 2018 (has links)
Syftet med projektet var att via en fältstudie på plats i Linga Linga, Moçambique, finna tekniska lösningar till problem kopplade till det privata hushållet. Via observationer och intervjuer identifierades de huvudsakliga problemen, varefter fokus lades på att finna lösningar till problematiken med stora mängder rök vid matlagning, att inomhustemperaturen blir väldigt hög, att det inte finns möjlighet att kylförvara mat samt att det råder stor brist på ordentliga toaletter. De lösningar på problemen som via en litteraturstudie identifierats utvärderades utifrån vad som ansågs rimligt att genomföra i Linga Linga, med avstamp i ekonomisk kostnad, materialtillgång och tekniska svårigheter. Slutsatsen blev att en enkel anordning kallad Mewar Angithi är lämplig för att minska mängden luftburna partiklar. Att kyla husen kan eventuellt vara möjligt med en Eco-cooler, men effekterna av denna är oklar. Att kyla mat visade sig tekniskt svårt utan ett kylskåp, och ett kylskåp är inte en ekonomisk möjlighet för gemene man på Linga Linga. Däremot finns olika lösningar på att förlänga hållbarheten på frukt och grönsaker. Slutligen identifierades ett par olika varianter av toaletter som skulle vara lämpliga att implementera i byn. / The aim of this project was to find technical solutions to problems linked to the private household through a field study in Linga Linga, Mozambique. Through observations and interviews, sixteen problems were identified and presented in a table. Large amounts of smoke while cooking, high indoor temperatures, lack of possibility to store food in refrigerator and absence of proper toilets was evaluated as the most crucial problems with the possibility of being solved without involvement of external actors. Solutions on the mentioned problems was searched for mainly in scientific research with a proven effect, but when no scientific results were found, a broader view was adopted. The solutions found in the literature study were evaluated based on what was considered possible to implement in Linga Linga, concerning economic cost, availability of materials and technical difficulties. The conclusion was that a simple device called Mewar Angithi is suitable for reducing the amount of airborne particles. Cooling the houses may be possible with an Eco-cooler, but the effect of this device is unproven. To store food cold proved to be technically difficult without access to a refrigerator, and a refrigerator is not economically possible for the residents in Linga Linga. However, there are different solutions to extend the lifetime of fruit and vegetables. Finally, a few different variants of toilets were identified that would be suitable to implement in the village.

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