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2123 Uppsatser om Sustainability - energy - Sida 50 av 142
Simulering av värmebehov för kombinerad kontors- och laboratoriebyggnad utan traditionellt värmesystem
In this Thesis the possibilities of designing a larger building that is very energy efficient in the sense that it would not need a conventional heating system are discussed. Solar radiation transmitted through the windows, internal heat from occupants, lamps and electric appliances inside the building and heat recovered from the ventilation system then have to be sufficient for the heating of the building. This study is of general interest since the property company, Akademiska Hus, plans to use this study as a first step in determining if this technique could be used in the future and thus be worth further investments. A building without a conventional heating system of the size investigated in this project has not yet been built.The energy needed for the heating of the building was simulated using VIP+.The conclusions from the study are that it is possible to build large buildings without any conventional heating system. This could be achieved in many different ways, for example by lowering the inside temperature or by using better windows and heat recovery system with higher efficiency.
Ett företagsperspektiv på kvalitetssäkrad hållbarhetsredovisning : Vilka motiv kan finnas till ett bestyrkande
Datum: 2009-05-29Författare: Sanne Jotorp, sjp07001@student.mdh.se Linnéa Olsson, lon08004@student.mdh.seHandledare: Ann-Sofi PaulTitel: Ett företagsperspektiv på bestyrkt hållbarhetsredovisning - Vilka motiv kan finnas till ett bestyrkandeNivå: Kandidatuppsats i ekonomistyrningSyfte: Syftet med undersökningen är att utifrån ett företagsperspektiv beskriva vilka motiv som kan tänkas finnas till ett bestyrkande. Ambitionen är att försöka förstå vad ett bestyrkande kan innebära för företagets interna hållbarhetsarbete och för förhållandet till interna och externa intressenterna.Metod: Undersökningen har formen av en förstudie och en kvalitativ undersökningsmetodik har tillämpats. Till grund för den teoretiska referensramen ligger en litteraturstudie. Empirin grundar sig på semistrukturerade intervjuer som har genomförts med ett urval av företag. I analysen fångas en helhetsbild av de samband och mönster som kan utläsas ur insamlade data.Slutsats: De tendenser som kan skönjas i undersökningen visar att legitimitet för företagets handlingar kan stärkas i förhållande till både interna och externa intressenter.
Sekundärnät för lågtempererad fjärrvärme
Lower energy use in buildings is a result of increasingly stringent energy requirements across Europe. When conventional district heating technology is used in areas with low energy consumption heatlosses do not fall even though the amount of energy delivered is reduced. This reduces income for thedistrict heating company. To maintain their economic viability the district heating companies? majorchallenge is to implement new solutions that minimize heat loss.
Det kan vara farligt att ligga lågt - om stadsplanering inför stigande vattennivåer : Exempel från Göteborg, Kristianstad och Arvika
In this study is being examined how cities can be planned in the face of rising water levels and extreme weather, due to the changing climate. The starting point has been to investigate how the problems can be tackled and how the positive sides of water in the city can be strengthened, and synergy effects and greater sustainability be achieved thereby. The method has been literature studies and case studies containing interviews and visits. Göteborg, Kristianstad and Arvika have been studied for discussions and ideas about adaptation. Today, building near water is very popular which brings both advantages and disadvantages.
Hållbar energi : - Ett initiativ till utveckling av bränsleceller i Sverige
In the world we live in today the environmental issues has become increasingly important, and we have begun to realize that we can not continue to use fossil fuels at the rate we do. When it comes to generating electricity we are constantly trying to come up with cleaner and more efficient solutions. The fuel celltechnology is one such alternative and has been around for over 100 years. Yet, it is not until now that the world has started to notice this great technology. The fuel cell has been developed in several areas and can today be used for handheld electronics, vehicles and small settlements.
Undersökning av solcellspotentialen för golfverksamheter i Sverige
Photovoltaic Systems in Sweden has longbeen heavily dependent on subsidies and grants to bring in a profit for the investor. Production of excess electricity is a major reason for this as the compensation for excess electricity today is low. However, there are businesses that have an electricityneed that are particularly suitable for solar electricity. These businesses have an electricity demand when the sun shines the brightest and if the Photovoltaic System is properly scaled, the excess electricity can be minimized. A golf club is that kind of a business and this thesis aims to examinate the solar power potential for golf businesses in Sweden.Nine golf clubs was selected from different locations in Sweden.
Utveckling och konstruktion av dämpare och låssystem för vågkraftverk
The division of Electricity at Uppsala University is developing a wave energy converter(WEC) consisting of a linear generator connected to a bouy at the water surfacethrough a wire cable called the connection line.During extreme conditions, the wave power plant will experience forces up to 500kN, which lead to unnecessary wear and will ultimately cause the failure of theconverter. To prevent this there is a need for a damper.The wave energy converter works at a maximum efficiency when the translator?sare centered with respect to the stator. Due to tidal movements the position of thetranslator can deviate. There for a mechanical divice that will compensate for this isneeded.This report describes the further development of an earlier project where a tidalwave compensator for a wave energy converter of Seabased AB was developed.
Hur tillämpar basindustrin aspekter kring hållbarhetsredovisning?: en fallstudie om fyra företag inom basindustrin i Norrbotten
Idag är det mycket uppmärksammat av både akademiker och användare att information från traditionella finansiella redovisningar inte är tillräckliga för att motsvara de krav som både externa och interna intressenter ställer på mer innehållsrika rapporter. Marknad och intressenter efterfrågar information om ekonomiska, miljömässiga och sociala aspekter, vilket har lett till att allt fler företag upprättar en hållbarhetsredovisning. Hållbarhetsredovisning syftar till att skapa en hållbar utveckling och ses som ett verktyg eller en möjlighet för företag att lämna information om dessa tre aspekter och det leder till ett ökat förtroende för företaget och dess verksamhet. Syftet med denna uppsats var att beskriva hur företag inom basindustrin i Norrbotten tillämpar hållbarhetsredovisning. Studien genomfördes genom en fallstudie av fyra företag för att beskriva hur de tillämpar sin hållbarhetsredovisning.
Projektering av ett småhus med fördjupning i uppvärmningssystem
This report aims to examine the design of a passive house. The design addresses the selection ofmaterial, sizing and selection of both building services systems and building technical features suchas load-bearing framework and moisture control. Interior layout is designed for a family of twoadults and one child.A big part of the report is devoted to an in-depth comparison of three different wall constructions ofpassive house standard. The structures that have been compared are a lightweight timber structure, aheavier concrete structure and a sandwich wall of the brand Weber Leca. The report covers variousaspects such as air flow, wall thickness, the risks associated with the construction, U-value, thermalbridges, power consumption, price, and assembly costs.
Utformning & placering av vädringskanaler i ett passivhus, drivet av naturliga krafter
A passive house in Norra Djurgårdsstaden drawn by Tengbom Arkitekter is going to be built. A shaft for airing is needed for a few apartments in the house.The airing shaft is designed for a few two room apartments in the house, which are not able to achieve satisfactory airing, as their outer walls are facing a single direction. The other apartments on the same floor are corner apartments. These apartments do not have the same difficulty with airing since they have their outer walls in different directions, with different pressures at the facades. The airflow in the airing shaft is supposed to be driven only by natural forces, by the sun. The purpose of natural driven forces is to achieve low energy consumption for the house.In this thesis, a design of the shaft for airing has been developed.Initially an open shaft for all apartments was analyzed.
Passivhus : En jämförelse mellan olika byggnadstekniska lösningar för ytterväggar
This report aims to examine the design of a passive house. The design addresses the selection ofmaterial, sizing and selection of both building services systems and building technical features suchas load-bearing framework and moisture control. Interior layout is designed for a family of twoadults and one child.A big part of the report is devoted to an in-depth comparison of three different wall constructions ofpassive house standard. The structures that have been compared are a lightweight timber structure, aheavier concrete structure and a sandwich wall of the brand Weber Leca. The report covers variousaspects such as air flow, wall thickness, the risks associated with the construction, U-value, thermalbridges, power consumption, price, and assembly costs.
Impleamini agnicione voluntatis Dei : En predikan ur Skoklosterhandskriften
This essay describes my work as a director in a specialized orientation within psychodrama, surrealistic psychodrama. Using the language and performance techniques of theater and under the guidance of a director, psychodrama creates an improvised narrative or story. The essay describes several dramas I have directed, reflecting on my actions and choices as a director and group leader. I examine whether my working method has allowed me to be spontaneous and creative, which I believe the example of "The dangerous bear" demonstrates. The process enabled me to establish trust and receptivity so that a newly constituted group dared to investigate conflicts in symbolic ways associated with illness and death.
Stomme i småhus ! : - En teoretisk studie av olika bärande vägglösningar !
This report aims to examine the design of a passive house. The design addresses the selection ofmaterial, sizing and selection of both building services systems and building technical features suchas load-bearing framework and moisture control. Interior layout is designed for a family of twoadults and one child.A big part of the report is devoted to an in-depth comparison of three different wall constructions ofpassive house standard. The structures that have been compared are a lightweight timber structure, aheavier concrete structure and a sandwich wall of the brand Weber Leca. The report covers variousaspects such as air flow, wall thickness, the risks associated with the construction, U-value, thermalbridges, power consumption, price, and assembly costs.
Småskalig vattenkraft : Dagsläge och framtidsplaner
This study focuses on small scale hydropower in Sweden. This means plants with a capacity of up to 10 MW. The study has a special focus on plants with a capacity up to 2 MW. The study has three aims. It strives to describe the small-scale hydroelectric industry in Sweden.
Doing Well by Doing Good : - En studie i hur CSR kan pa?verka svenska modefo?retags anseende
Corporate Social Responsibility (CSR) is a concept that is growing increasingly important, with more and more companies acknowledging that they have an obligation to the environment in which they operate. We were interested in inquiring into why companies chose to do so, even though there are no laws that condition them to engage in CSR. One answer to this might be that companies use CSR as a way to distinguish themselves from the competition as well as to gain trust and goodwill from the stakeholders. When it comes to Corporate Social Responsibility, the question is no longer whether or not companies should engage in it, but how they can gain competitive advantage by doing so. This study aims at providing a framework for possible ways of integrating CSR and branding, as well as different strategies for CSR-communication. We also tried to define how, and why, consumers respond to CSR-initiatives.