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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

Vilken ekonomisk effekt har hyresvärdens egen energianläggning på förhållandet till hyresgästerna / What economic effect does the landlord's own energy installation have on the relationship with tenants?

Kileus, Clara January 2023 (has links)
Idag är klimatet och miljön omdebatterade ämnen som påverkar alla, människor, djur och natur. Människor i Sverige, men även nationellt, blir alltmer medvetna och engagerade angående ämnet och debatten. Skolstrejker och demonstrationer är två exempel på åtaganden som människor vidtagit. Även större krav inom hållbarhet ställs inom fastighetsbranschen vilket leder till att fastighetsägare måste vidta åtgärder för att fastigheterna ska uppfylla dessa krav. Dessutom finns det olika certifikat på byggnader vilket även motiverar fastighetsägare att vilja äga och förvalta gröna och miljöklassade byggnader. Det finns många olika åtaganden och tekniska lösningar som kan utnyttjas för att uppfylla kraven om hållbarhet som ställs inom fastighetsbranschen. Geoenergi är ett exempel på åtaganden som kan göras för att öka hållbarheten för en fastighet. Geoenergi är billigare och bättre för klimatet än fjärrvärme som redan är känt för att vara billigt och bra för miljön. Syftet med denna studie är att undersöka vad en geoenergianläggning på en fastighet, Münchenbryggeriet, har för påverkan på hyresgästerna och vilken ekonomisk effekt detta har på hyresvärden. För att ta reda på den ekonomiska effekten kommer det göras en jämförelse med en motsvarande fastighet, Mullbärsträdet 6, där fjärrvärme står för uppvärmningen. I rapporten kommer geoenergi att förklaras utförligt och dess inverkan på miljö och klimat men även teoretisk data kommer att redogöras. I rapporten har det gjorts en litteraturstudie där information och fakta redovisas. Litteraturstudien följs därefter upp med en undersökning som består av intervjuer. Respondenterna är hyresgäster i Münchenbryggeriet och Mullbärsträdet 6. Resultatet av undersökningen visar att hyresgästerna i Münchenbryggeriet, som värms upp med geoenergi, sitter i en byggnad där uppvärmningen är billigare än i en byggnad som drivs av fjärrvärme. Dessutom visar resultatet av undersökningen att hyresgästerna bara har positiva tankar om geoenergianläggningen och en positiv relation med hyresvärden. Slutligen visar resultatet att även om fjärrvärme är en billig uppvärmningskälla och bra för klimatet, liksom geoenergi, går det att se att en geoenergianläggning genererar andra nya aspekter som fjärrvärme inte kan ge. / Today, the climate and the environment are two controversial topics that affect everyone, humans, animals and nature. People in Sweden, but also nationally, are becoming increasingly aware and committed to the topic and the debate. School strikes and demonstrations for the climate are two examples of commitments made by people. The real estate sector is also making greater demands in terms of sustainability, which means that property owners have to take measures to ensure that their properties meet these requirements. In addition, there are various certificates for buildings, which also motivates property owners to want to own and manage green and environmentally rated buildings. There are many different commitments and technical solutions that can be used to meet the sustainability requirements of the real estate sector. Geoenergy is an example of a commitment that can be made to increase the sustainability of a property. Geothermal energy is cheaper and better for the climate than district heating, which is already known to be cheap and good for the environment. The purpose of this study is to investigate what impact a geoenergy installation on a property, the Münchenbryggeriet, has on the tenants and what economic effect this has on the landlord. To find out the economic effect, a comparison will be made with a similar property, Mullbärsträdet 6, where district heating is used. In the report, geoenergy will be explained in detail and its impact on the environment and climate, but also theoretical data will be presented. The report includes a literature study where information and facts are presented. The literature study is then followed up with a survey consisting of interviews. The respondents are tenants in Münchenbryggeriet and Mullbärsträdet 6. The results of the survey show that the tenants in Münchenbryggeriet, which is heated by geothermal energy, are in a building where heating is cheaper than in a building powered by district heating. Furthermore, the results of the survey show that the tenants have only positive thoughts about the geothermal installation and a positive relationship with the landlord. Finally, the results show that although district heating is a cheap source of heating and good for the climate, as well as geothermal energy, it can be seen that a geothermal installation generates other new aspects that district heating cannot provide.
2

Modellering och simulering av uppvärmning och nedkylning av kontorsbyggnad, via HVAC system där fjärrvärme och fjärrkyla jämförs med borrhålslager som energikälla

Forsberg, Anton January 2018 (has links)
An office building (sthlm new hus 4) located in the south of Hammarbyhamnen overlooking Hammarbybacken is planned in 2018. Climate control of the office building are via radiators, high-temperature chilled beam and pre-treated supply air. The building is currently being designed for district heating and remote cooling. The study aims to investigate whether borehole thermal energy system (BTES) are a reasonable alternative to provide the office building with heat and cooling, from an environmental- and life cycle cost (LCC) perspective. The aim of the study is to generate an energy requirement for the office building, which is done by construct a model of the building using IDA ICE, a simulation software. The energy requirement is covered by either district heating/-cooling (energy system I) or BTES (energy system II) as the primary energy source. A model of the BTES is constructed in excel based on data from experience input. Life cycle cost analysis are used for economical comparison between the energy systems. The environmental assessment is based on Nordic electricity mix, which controls the impact of the energy systems. Energy system II entails a need for energy support to avoid over dimension the heat pump, which is done by complementing the surplus need through district heating and remote cooling. LCC shows an economic breakpoint at 11-year calculation period, where BTES becomes economically advantageously. Environmentally, energy system II releases 14.3 tonnes of CO2eq compared to energy system II which results in a reduced emission of 47 tonnes of CO2eq based on Nordic electricity mix.
3

A arquitetura da integração energética sul-americana, a participação brasileira e a geoenergia humana. / South american energetic integration, brazilian participation and human geoenergy.

Reis, Antonio Gomes dos 15 August 2014 (has links)
Este trabalho tem como objetivo estudar a participação e os interesses brasileiros no processo de integração energética sul americana, com foco nos setores de eletricidade e gás natural, analisando os aspectos políticos, econômicos, sociais e ambientais envolvidos sob a perspectiva daquilo que chamamos de geoenergia humana (termo criado para designar a relação de multicausalidade envolvendo os aspectos sociais, econômicos, ambientais e políticos presente no planejamento energético, e a forma que se distribuem territorialmente os recursos energéticos e possíveis empreendimentos associados a eles). Para isso, é feita, primeiramente, uma discussão sobre a relação entre energia e desenvolvimento socioeconômico, na qual a integração energética faz parte das políticas de desenvolvimento dos Estados. Em seguida, é feita a análise da integração energética sul-americana, relacionando-a ao processo de crescimento econômico da região, baseada na discussão sobre o potencial energético do continente e, em seguida, na revisão histórica do processo de integração energética nessa região onde são identificados os principais projetos e agentes envolvidos. A terceira parte do trabalho se volta para o estudo específico da participação brasileira no processo de integração energética sul americana, o que implica na identificação dos principais projetos que envolvem o Estado brasileiro ou empresas deste país na região e na análise da participação e dos interesses dos principais envolvidos. Por último, é feita a análise dos aspectos socioambientais envolvidos na questão, onde é apresentada a ideia de geoenergia humana e são discutidos conflitos socioambientais presentes neste contexto. Os resultados e as conclusões do trabalho evidenciam a relação direta que existe entre o crescimento econômico dos países e o desenvolvimento dos seus respectivos setores energéticos, o que envolve a comercialização de energia e o processo de integração energética no qual os maiores avanços se deram na União Europeia. Da mesma forma, mostram que nos últimos anos se intensificaram as iniciativas de integração de infraestruturas na América do Sul, bem como os esforços comuns em superar o enfoque bilateral ao qual se restringiam os projetos antigamente, com destaque para a Iniciativa para a Integração da Infraestrutura Regional Sul-Americana (IIRSA) e a União das Nações Sul-Americanas (UNASUL). Neste contexto, é evidente o protagonismo brasileiro, que se dá por meio de políticas de Estado que visam estimular a participação do Banco Nacional do Desenvolvimento Econômico e Social (BNDES) e das empresas nacionais de construção civil. Por último, devem ser destacados os diversos conflitos socioambientais relacionados aos empreendimentos energéticos no continente principalmente na região amazônica e que permitem questionar a concepção de desenvolvimento que está por trás do processo de integração na América do Sul. / This works goal is to study Brazils participation and interests in the process of energetic integration in South America, focusing on electricity and natural gas. It analyses the political, economics, social and environmental aspects involved from the perspective of the human geoenergy (term that refers to the relation between the different variables of the energetic planning that are distributed in space in different ways). In order to do so, the relation between energy and socioeconomical development is analysed, considering the process of energetic integration as intrinsic to the countries development policies. This works discusses the concept of energetic integration, considering the history of disputes between countries because of energy resources, and shows current examples of energy policies in the world. The third part of this work is focused on the specific study of Brazilian participation in the process of energetic integration in South America. This implies in the identification of the main projects that involve Brazil or its companies in the region and in the analysis of the participation and interests of the main parts involved. Finally, an analysis of the socio-environmental aspects involved in the matter is presented. At that point, the idea of human geoenergy is presented and the socio-environmental conflicts within this context are discussed. . The results show a direct relation between the countries economic growth and the development of their energetic sectors, which involves energy commercialization and the process of energetic integration in which the bigger advances happened in the European Union. It is also shown that, in the last years, the initiatives of infrastructure integration in South America were intensified, as were the common efforts to overcome the bilateral approach of the former projects in which the Initiative for the South American Regional Infrastructure Integration (IIRSA) and the Union of the South American Nations (UNASUL) stands out. Within this context, Brazils main role is evident. The countrys policies aim to stimulate the National Bank of Social and Economic Development (BNDES) and the civil construction national companies participation. Finally, the socio-environmental conflicts related to the energy endeavours in the continent, mainly in the Amazon region, that make us question the notion of development behind the South American integration, are put on the spotlight.
4

A arquitetura da integração energética sul-americana, a participação brasileira e a geoenergia humana. / South american energetic integration, brazilian participation and human geoenergy.

Antonio Gomes dos Reis 15 August 2014 (has links)
Este trabalho tem como objetivo estudar a participação e os interesses brasileiros no processo de integração energética sul americana, com foco nos setores de eletricidade e gás natural, analisando os aspectos políticos, econômicos, sociais e ambientais envolvidos sob a perspectiva daquilo que chamamos de geoenergia humana (termo criado para designar a relação de multicausalidade envolvendo os aspectos sociais, econômicos, ambientais e políticos presente no planejamento energético, e a forma que se distribuem territorialmente os recursos energéticos e possíveis empreendimentos associados a eles). Para isso, é feita, primeiramente, uma discussão sobre a relação entre energia e desenvolvimento socioeconômico, na qual a integração energética faz parte das políticas de desenvolvimento dos Estados. Em seguida, é feita a análise da integração energética sul-americana, relacionando-a ao processo de crescimento econômico da região, baseada na discussão sobre o potencial energético do continente e, em seguida, na revisão histórica do processo de integração energética nessa região onde são identificados os principais projetos e agentes envolvidos. A terceira parte do trabalho se volta para o estudo específico da participação brasileira no processo de integração energética sul americana, o que implica na identificação dos principais projetos que envolvem o Estado brasileiro ou empresas deste país na região e na análise da participação e dos interesses dos principais envolvidos. Por último, é feita a análise dos aspectos socioambientais envolvidos na questão, onde é apresentada a ideia de geoenergia humana e são discutidos conflitos socioambientais presentes neste contexto. Os resultados e as conclusões do trabalho evidenciam a relação direta que existe entre o crescimento econômico dos países e o desenvolvimento dos seus respectivos setores energéticos, o que envolve a comercialização de energia e o processo de integração energética no qual os maiores avanços se deram na União Europeia. Da mesma forma, mostram que nos últimos anos se intensificaram as iniciativas de integração de infraestruturas na América do Sul, bem como os esforços comuns em superar o enfoque bilateral ao qual se restringiam os projetos antigamente, com destaque para a Iniciativa para a Integração da Infraestrutura Regional Sul-Americana (IIRSA) e a União das Nações Sul-Americanas (UNASUL). Neste contexto, é evidente o protagonismo brasileiro, que se dá por meio de políticas de Estado que visam estimular a participação do Banco Nacional do Desenvolvimento Econômico e Social (BNDES) e das empresas nacionais de construção civil. Por último, devem ser destacados os diversos conflitos socioambientais relacionados aos empreendimentos energéticos no continente principalmente na região amazônica e que permitem questionar a concepção de desenvolvimento que está por trás do processo de integração na América do Sul. / This works goal is to study Brazils participation and interests in the process of energetic integration in South America, focusing on electricity and natural gas. It analyses the political, economics, social and environmental aspects involved from the perspective of the human geoenergy (term that refers to the relation between the different variables of the energetic planning that are distributed in space in different ways). In order to do so, the relation between energy and socioeconomical development is analysed, considering the process of energetic integration as intrinsic to the countries development policies. This works discusses the concept of energetic integration, considering the history of disputes between countries because of energy resources, and shows current examples of energy policies in the world. The third part of this work is focused on the specific study of Brazilian participation in the process of energetic integration in South America. This implies in the identification of the main projects that involve Brazil or its companies in the region and in the analysis of the participation and interests of the main parts involved. Finally, an analysis of the socio-environmental aspects involved in the matter is presented. At that point, the idea of human geoenergy is presented and the socio-environmental conflicts within this context are discussed. . The results show a direct relation between the countries economic growth and the development of their energetic sectors, which involves energy commercialization and the process of energetic integration in which the bigger advances happened in the European Union. It is also shown that, in the last years, the initiatives of infrastructure integration in South America were intensified, as were the common efforts to overcome the bilateral approach of the former projects in which the Initiative for the South American Regional Infrastructure Integration (IIRSA) and the Union of the South American Nations (UNASUL) stands out. Within this context, Brazils main role is evident. The countrys policies aim to stimulate the National Bank of Social and Economic Development (BNDES) and the civil construction national companies participation. Finally, the socio-environmental conflicts related to the energy endeavours in the continent, mainly in the Amazon region, that make us question the notion of development behind the South American integration, are put on the spotlight.
5

Hydronic Pavement Systems for Sustainable Winter Road Maintenance in Sweden : A Study of Hamnbacken in Visby / Uppvärmda vägar för hållbar halkbekämpning i Sverige

Barikan, Chirin January 2019 (has links)
In countries with harsh winter climates extensive winter road maintenance is necessary to achieve traffic accessibility and road safety. These measures have high economic and environmental costs as snow free roads and winter road maintenance in Sweden today is achieved by a combination of mechanical snow clearance and the spreading of salt to prevent ice formation. The salt ends up in the roadside environment and has negative effects on groundwater and vegetation. An alternative to traditional winter road maintenance to obtain non-skid winter roads is the use of hydronic pavement(HP) systems. Existing HP systems in Sweden are powered by district heating which limits the application to urban locations. The goal is to utilize renewable energy sources such as geoenergy which can be used in both rural and urban locations. This thesis suggests Hamnbacken in Visby as a pilot project for a full-scale application of the proposed HP system using surface water source heat.The weather related road surface conditions on Hamnbacken, and the potential of a renewable energysource have been examined in this study and the proposed location has been found favourable for a HP system. / Länder med övervägande kallt vinterklimat är halkbekämpning en nödvändighet för trafikens framkomlighet och säkerhet. Åtgärderna som vidtas för att få snö- och isfria vägar är kostsamma samt har en hög miljöpåverkan, ett vedertagligt exempel är plogning och saltning. Saltet hamnar i slutändan inom vägens omgivande områden och har en negativ påverkan på grundvatten och vegetation. En alternativ lösning till traditionell halkbekämpning är uppvärmda vägar för att uppnå ett halkfritt vinterväglag. Befintliga väguppvärmningssystem i Sverige försörjs av fjärrvärme vilket är en begräsning då tillgången till fjärrvärme finns i anslutning till tätorter. Målet är att utnyttja förnybara energikällor såsom geoenergi som är tillgänglig både i tätorter och på landsbygden. Det här examensarbetet undersöker Hamnbacken i Visby som ett pilotprojekt för en fullskalig implementering av väguppvärmningssystem där sjövärme används som energikälla. Denna studie har undersökt väderrelaterade vägförhållanden på Hamnbacken samt potentialen för användning av sjövärme. Den föreslagna platsens förutsättningar har visat sig vara gynnsamma i detta avseende.

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