The borehole heat exchangers of today suffer from poor thermal and hydrodynamic performance. The purpose of this thesis is to improve the performance of ground source heat pump systems and thermal energy storages by increasing the energy efficiency of the borehole heat exchangers. For this reason, the annular coaxial borehole heat exchanger (CBHE) has been analyzed. This type of heat exchanger is interesting in terms of both thermal and hydrodynamic performance. A model has been set up in the program Comsol Multiphysics in order to investigate the heat transfer characteristics along the borehole.

The use of energy is an important question in today´s society, and a substantial part of the energy that is used today is used in our homes. To lower this usage is vital, and there are regulations in place both on the national and the local level, that say that new apartment blocks must be built to consume less energy, which in the end will lower the impact on the climate.One way to make the housing sector more environmentally sustainable, is to produce energy issions that are bad for the environment, for example to build wind turbines close to or even on the buildings, so called urban wind power. The scope for this report is to see if urban wind power could be a sustainable alternative for the residential area that Svenska Bostäder plans to build in Albano in Stockholm.There are extensive scientific theories regarding wind and wind power, and a literature study is made to investigate past knowledge in the area. Efforts have been made to find earlier trials with urban wind power and, both scientific research and trials where urban wind power actually has been installed. The theory chapter deals both with the wind itself and how electricity can be generated from wind.

In the essay the author examines how pilgrimage can be used as a tool to radicalise democracy in a late modern society marked by neoliberalism. Applying a dialectic perspective on social movements the essay puts forward how the pilgrimage movement Pilgrim?s Walk for Future, administrated by Church of Sweden, is working in line with the historical pilgrimage theology - a modern critical ecclesiology- to mobilise political action to prevent climate change. The result of the study shows how PWFF meet the neoliberal hegemony with a mobilisation of alternative values beyond the order of capitalism, in line with Christian theology and tradition. The mobilisation is made possible by new forms of identifications with oneself and the social world that meet a modern power/knowledge- regime based on rational thought, and which questions norms and practises by paying attention to their negative effects on nature and on human life in general.

Syftet med studien var att studera lagsammanhållning, prestation och motivationsklimat i lagsporterna innebandy och ishockey för att jämföra eventuella skillnader. I enkätstudien medverkade totalt 106 deltagare varav 50 ishockeyspelare ( n = 50) och 56 innebandyspelare ( n =56). De var spelare från sju lag varav fyra ishockeylag ( n =4) och tre innebandylag Spelarna var i åldrarna 16 år till 32 år (M = 20.58, Sd = 3.60). Lagen var i division 1, 2, 3 eller 4-elit. Lagsammanhållning mättes med: Group Enviroment Questionarie, motivationsklimat med: The Perceived Motivational Climate in Sport Questionarie-3 och prestation med:Vragenlijst Evaluatie Sport Psychologische Begeleiding.

A reform of higher education in Sweden in 1993 led to stiffer competitive climate among educational institutions. The reform meant that educational institutions now had the opportunity to plan their curriculum autonomously. Prior to the reform educational planning was restricted to the Swedish government. The new rules spelled a greater opportunity for educational institutions to profile themselves based on their educational offerings. The higher degree of competition means that marketing becomes increasingly important when recruiting new students.

Den globala havsnivåhöjningen är en direkt följd av den globala uppvärmningen ochkommer i framtiden påverka stora områden i kustregionen. Syftet med detta arbete äratt öka förståelsen samt se hur Gotlands strandängar samt kustområden kan påverkas avhavsnivåhöjningen år 2100 och se vilka eventuella följder detta kan leda till. Metodernasom har använts är GIS-analys och litteraturstudier. Höjdmodeller med olika upplösningjämfördes även för att undersöka vilka som lämpar sig till en liknande analys införframtida studier. Resultatet visar att vid en havsnivåhöjning på 1 m kommer 97 % avstrandängarna försvinna och vid en havsnivåhöjning på 2 m försvinner 99 % av degotländska strandängarna.

The discussion about gender and ideals shown in mass media is a subject of great importance for the society in general. Media is playing an essential part when it comes to establish standards and values and we are constantly exposed to all types of impressions, whether we are aware or not. It is therefore of great importance that we understand how stereotypes are built and to gain a deep knowledge that would enrich the area of Media and Communication Studies.The aim and focus of this study was to analyze how male stereotypes is communicated in print advertising and how visual means of expressions helps to construct the masculinities shown. From a semiotic analysis of seven print adverts appearing in the Swedish lifestyle Magazine Café were we able to gain a thorough understanding about how male stereotypes are communicated and built.The result showed that different kinds of stereotypes are in fact used but it is still a hegemonic masculinity that is predominating. Traditional male characteristics are still in use but we were able to see strong indications of effemination, sexualizing and objectifying.

The constant need of energy is something that affects us all no matter our current situation. Whether we are driving our car to work, taking the elevator or using the oven to cook dinner we end up relying on energy. Our whole society is continuously striving to achieve a higher grade of efficiency and the process of supplying ourselves with energy is no exception. The importance of appliances in our everyday life cannot be exaggerated and thus the importance of their high efficiency.Efficiency is already a keyword in the appliance industry with labels, stars and numbers helping us choosing the most suitable option for the task ahead. No matter how efficient appliances often use pure electricity as their energy source.

Uppsalahem is the leading housing corporation in Uppsala with its over 160 real estate properties. Uppsalahem is owned by the municipality of Uppsala, which has a climate and energy goal that aims for 100 MW of solar energy to be installed in Uppsala by 2030. The 100 MW goal, combined with Uppsalahem?s environmental policy, is a strong incentive to investigate the possibility of installing PV modules on the many available roof areas that Uppsalahem possesses. The objective of this thesis is to create a foundation for future decisions regarding PV systems for Uppsalahem.

Warmer climate is a driving factor to species expansion northwards. Expansion to new areas can result in escape from natural enemies, resulting in reduced levels of mortality and thereby potentially increasing the rate of expansion. The most important parasitoid species attacking butterfly larvae belong to the families Tachinidae, Ichneumonidae and Braconidae. The aim of this thesis was to investigate parasitism and difference between populations in established area and newly colonized area for the European map butterfly, Araschnia levana, in order to examine if the butterfly has escaped from some natural enemies. In 1982 the first European map butterfly was observed in Sweden and has now established up to middle Småland.

Authors: Lars Johansson & Johan PetterssonTitle: ?There is way to much sports in the athletics? ? A study of Swedish sportsFootball has gone from being a hobby and a popular pastime into a billion-dollar industry, and clubs around Europe are therefore operated more and more like regular companies. Sweden's position in the UEFA rankings is a modest 23 rd place, behind nations such as Austria, Switzerland and Belarus. The economic climate in Sweden is often highlighted as a strong factor. When we started our study we agreed that this could be a major contributing factor to this relatively modest rank, but believed that there were also other factors that played a big role.

Sverige är idag i starkt beroende av importerade oljeprodukter för att driva de dagliga transporter som krävs för att samhället ska fungera. Kraftigt ökade priser på olja, eller en slopad internationell oljehandel skulle få ödesdigra konsekvenser för Sverige. Samtidigt är Jordens klimat i förändring, varmare temperaturer leder till smältande inlandsisar och detta till stor del på grund av världens oljeanvändning. Denna rapport behandlar de ekonomiska aspekterna kring biogastillverkning för ett Väster- och Norrbotten självförsörjande inom drivmedel för vägtransporter. Rapporten utreder huruvida denna självförsörjning skulle vara möjligt med avseende på tillgång utav råvaror för biogasanläggningarna.

Since the turn of the millennium a sharp increase in the interest for bio energy has been observed. Important reasons for this growing interest can be due to the fact that fossil fuels are a finite resource. A net discharge of greenhouse gases occur when fossil fuels are burned. The discharge of greenhouse gases are considered to be the main reason to the greenhouse effect. Means of control to increase the use of bio energy has been introduced and, as intended, the use of bio energy has increased. As a result of the legal provisions the ability to pay for bio energy has increased, which the forest industry view as a problem.

The location on the river delta of Klarälven, adjacent to lake Vänern, makes Karlstad one of the Swedish cities where a significant flood risk is present. The city has several major floods in its memory which has caused great material damage and economic losses, the latest of which occurred in the winter of year 2000/2001. The purpose of the study is to examine how the approach to flood risk has changed in the municipality of Karlstad since the 1950s, and how this change has affected the current situation regarding the city's vulnerability to flooding. To investigate this, a document analysis was conducted, where key documents in the media and from the municipality of Karlstad was studied. Furthermore, an interview study was conducted with respondents who currently are employed or previously have been employed in the municipality of Karlstad, who in various ways work with issues of flood risk. The result of the study shows that several changes have taken place since the 1950s in terms of the municipality's approach to flood risk, which for instance has led to preventative measures being taken to a greater extent than previously in the physical planning.

All arable land in Sweden need a proper drainage for an effectively agriculture to take place. Of all arable land in Sweden, about 50% is naturally drained and 50% need artificial drainge. More than half of the tile drained area is in need of new drainage or renewed drainage. A good drainage improves farming and crop growth and increases the opportunity to achieve a high and safe harvest level. Future climate change and agriculture size rationalization will increase the need for good drainage. In this paper, two trials with three drainage distances, performed at Lanna experimental station, were analyzed using a mixed linear model.