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2215 Uppsatser om Energy balance - Sida 23 av 148
Energi - och ekonomipotential för solceller i Hållbara Järva
One of the city of Stockholm?s main objectives is to have a society completely free from fossil fuels. To achieve this, several investments regarding improvements in energy efficiency and renewable energy are currently being planned or implemented. One of these investments is a project called Hallbara Jarva which is located in the suburbs of Stockholm. The purpose of this thesis is to examine the prospects of an investment in photovoltaic cells from an energy-saving and economical point of view. The analysis is limited to three buildings within Hallbara Jarva and is intended for the property owner. Solar energy is a type of renewable energy source and is commonly divided into solar heating and solar power.
Energianalys av hygieniseringssystem : jämförelse av befintlig pastörisering med integrerad termofil hygienisering på Kungsängens gårds biogasanläggning i Uppsala
The biogas plant Kungsängens gård, owned by Uppsala Vatten och Avfall AB, produces biogas and biomanure from organic household waste, food processing waste and
slaughterhouse waste. In year 2012, 4.4 million Nm3 of biogas were produced from 25 200 tons of waste. Before digestion all substrate is sanitized by one hour?s pasteurization at 70°C in order to kill pathogens. Another method, integrated thermophilic sanitation (ITS), is of
interest in order to decrease the energy demand.
Solcellsdrivning av distribuerade inbyggda system
The high level of energy consumption that the industrialised countries have reached and thepollution that this brings has long been a cause for analysis and debate, development and usageof so called renewable energy sources is therefore more important than ever. The energy in theelectromagnetic radiation from the sun is an interesting alternative. One way of harvesting thisenergy is by using solar cells, devices that generate DC current when exposed to electromagneticradiation.The goal of this master?s thesis was to design a solar powered power supply to Syntronic AB?sMidrange platform. The envisioned application is a stand-alone distributed embedded system,for example a node-based temperature monitoring system.
Energieffektivisering av befintliga sjukhusbyggnader - Analys med avseende på kostnad och energibesparing
The climate changes that are occuring in the world have resulted in that the EU callingfor a 20 % reduction in energy consumption to the year 2020, to reach that goal theEU want the public sector to go forth as a good example. Västfastigheter owns andmanage the hospital buildings in the Västra Götaland region. To be able to reducetheir energy usage Västfastigheter has hired several consulting firms to chart out theenergy consumption on each hospital building. The biggest energy savings potentialhave been calculated and what the cost will be to perform each action. The energyaudit have been completed and stand as the decision basis for Västfastigheter?s choiceon which action packages that should be implemented.
Kvinnors psykosociala arbetsmiljö & hälsa : - En arbetsplatsanalys av en organisation inom företagshälsovården
The following study explores the relation between psychosocial work environment and individual health. The purpose is to examine how female employees in the occupational health sector experience their own psychosocial work environment, focusing on different influencing factors in both the workplace and their private life regarding the employees own health. The study applies a hermeneutic approach in which qualitative interviews constitute the empirical data. Previous research on this particular subject has focused on the following themes: the combination of work-family life, demand/control model and flexibility in the workplace in relation to health and stress. The theoretical framework used in this study integrates relevant concepts, specifically SOC, poor leadership and flexibility.
Balanserat styrkort i offentlig verksamhet - balansering av svårförenliga mål
Title:Balanced scorecard in the public sector - the balancing of conflicting objectives.Level:Final assignment for Bachelor of Science in Business Administration.Authors:Erika Sundström and Lisette Lundstedt.Tutor:Stig Sörling and Tomas Källquist.Date:2014-05-20.Purpose:The purpose of our study, from a management perspective, is to increase understanding of how the public sector can develop and use the balanced scorecard to balance conflicting objectives.Method:Hermeneutic approach, Literature review, Qualitative case study.Result and conclusion:Under certain conditions, the balanced scorecard can help to deal with conflicting objectives in a public organization. Stakeholders and objectives are important factors for a balanced control. This is due to the fact that many different stakeholders often leads to the creation of conflicting objectives. Numerous and unclear objectives lead to both conflict and uncertainty. The organization?s structure and culture are other factors that also influence.
Metod för beslutsstöd vid formulering och uppföljning av en kommuns klimatmål : fallstudie Uppsala kommun
The purpose of this study is to create a method that can be used to produce decisionsupport data for the climate goals of a municipality. The method should be able to demonstrate
the potential for reducing energy use and greenhouse gas emissions for measures aimed at the stationary energy system in the municipality. It will be used to make longterm
projections of energy use and greenhouse gas emissions in order to be able to demonstrate the ability to reach climate goals.
The aim was also to test the method's applicability by using the municipality of Uppsala and the Uppsala climate protocol project in a case study. Uppsala climate protocol is a project consisting of participants from business, government and organizations that voluntarily want to commit to reducing their carbon footprint by reducing their energy use and thus work to achieve the municipality's overall climate goal.
Public reporting of energy use and climate impact has been studied in order to examine the nature of indicators and accounting figures that are commonly used in the field and
how long-term forecasts are formulated. In connection to this, the type and sources for the kind of data needed was also examined.
Arbetsmotivera mera! : En kvantitativ studie om arbetsmotivation på Norstedts Juridik
Syftet med denna studie var att utvärdera arbetsmotivation på företaget Norstedts Juridik och att ge underlag för förbättringsarbete. Utvärderingen gjordes med hjälp av en modell för arbetsmotivation, som konstruerades med grund i teori och tidigare forskning. Modellen innefattade åtta dimensioner som tillsammans antogs utgöra arbetsmotivation. Dessa dimensioner var variation, autonomi, signifikans, feedback, utvecklingsmöjligheter, tillhörighet och lojalitet, lön och belöningssystem samt work- life balance. Dimensionerna analyserades i förhållande till de tre bakgrundsvariablerna kön, anställningstid och arbetsenhet och resultaten behandlades i statistikprogrammet SPSS.
Värmeåtervinning ur spillvatten i befintliga flerbostadshus
Drain water heat recovery is an uncommon measure in multi-unit residential buildings. There istechnology available for the purpose but the knowing and experience of the heat recovery systems islittle. The purpose of this thesis is to evaluate the future potential of drain water heat recovery inmulti-unit residential buildings.A major part of the multi-unit residential buildings in Sweden were built during modernismen andrekordåren (1940?1975). Many of the buildings have worn out drain and water supply systems andmany are in need of a general refurbishment.
Utvärdering av befintliga passivhus : En byggnadsfysikalisk bedömning och mätningar om temperatur, och fukt analys på ytterväggarna
Energy price are on the way up to a high level that will not diminish in the future make us to focus more on the sustainable development for a better solution of residential houses. Passive house or low energy housing are one of the solution to make residential more environment friendly, in same time it´s a financial security using less energy, and saving money. The last 10 years in Germany and all around Europe the concept of passive house been developed, and people aim to know more about these concept that leading the market more attractive for passive houses. A passive house is a well designed building highly insulated and air tight with mechanical ventilated system for the whole building envelope that minimizes the use of energy for heating [1].The housing company Mimer has chosen to invest in low energy consumption in every new housing project. These future plan projects are decided to use less than 75 kwh per square meter annually in purchased energy [2].This thesis is about new constructed passive houses, and focuses on the evaluations of the temperature, and moisture condition for attic, external walls and joist.
Klimatskärmens funktion : En jämförande analys av projekterade nybyggnationer i Östra Salabacke, ur ett energi- samt fuktperspektiv
The design of the building envelope affects the energy consumption of a building. As the energy requirements for new buildings are becoming more demanding, the performance of the building envelope must be improved. Energy efficiency and durability are important attributes to consider.This report includes investigations of the building envelope, moisture and passive solar energy. It is based on the analysis of two different buildings with different designs. These buildings stand as reference for two of the companies who are working on a new, climate smart, residential area in Uppsala, Sweden.Studies and analyses on energy consumption and moisture transportation were made.
Passivhus - En undersökning om varför det inte byggs fler passivhus i Sverige
This thesis tries to clarify why more houses such as passive houses is not built and at the same time the differences is described with the conventional construction as a starting point. Sweden has set environmental objectives to reduce energy consumption in buildings by 50 percent by the year 2050 compared to 1995. The passivehouse concept could have a significant role, particularly in the reconstruction of buildings with high energy consumption. For sustainable building the passivehouse technology is an economically viable concept while benefiting the environment. Initially an introduction is given of the background to the problem, purpose and objective of the thesis.
Implementation av ett digitalt vågfilter på en SIC-struktur
When implementing syncronous filters with global clock nets, a substantial amount of energy is consumed in the clock net. Hence, it is interesting to reduce the size of the clock net, which in turn will reduce the total energy consumption. One way to acheive this, is to create a SIC (Structured Interfacing of Computational elements) since such a structure can be created without a global clock net. Our results show that a fifth order wavedigital filter with a sample rate of at least 10M samples/sec may be achieved.
Enstudie om lågtempererat värmesystem i vägg : -Fokus på inomhusklimatet och energianvändning
Today the human being see energy as a matter of course but the resources that is used for extract energy is today not enough for the world demand. Of all the energy that is used in Sweden today approximately 40 % goes to the building stock. This number will most likely increase if not necessary actions will be made on the already existing building stock since new houses constantly are built which will be added up on the already existing energy supply. This takes cause of action on the already existing building stocks, to fulfill the demands of the future use of energy that has been set by the authority. At the same time the thermal conditions cannot be influenced by the necessary changes that must be made.
Kommunikation och planering på byggarbetsplatsen
Det finns stora besparingsmöjligheter i byggbranschen genom effektivare kommunikation och planering. Examensarbetet har genomförts på tre av Q-gruppens byggarbetsplatser i Stockholmsområdet. En ombyggnation/ nyproduktion av lägenheter och lokaler i Saltsjöbaden, en nyproduktion av lägenheter och förskola på Södermalm samt en ombyggnation av lokaler i Folksamhuset på Södermalm. Kvalitativa intervjuer, deltagande observationer och en omarbetning av en befintlig Gantt tidplan till en LoB (Line of Balance) tidplan visar hur situationen med kommunikation och planering i byggbranschen upplevs av platsledning och yrkesarbetare samt hur det kan förbättras.Examensarbetet omfattar två delar där kommunikation mellan platsledning och yrkesarbetare på byggarbetsplatsen är den ena och användning av LoB planering är den andra.Examensarbetet visar att de som arbetar i produktionen gärna ser en kombination av planeringsmetoderna Gantt och LoB. Samtliga intervjuade är överens om att en väl fungerande kommunikation och planering är väsentligt för att projekt ska fortlöpa smidigt.