The sun is an endless energy source and the heat it produces can be used to heatup our homes. This technology is relatively old and was introduced in the late70-s. There are two kinds of solar collectors that are most frequently used todayand these are plain solar collectors and vacuum solar collectors. The plain solarcollectors are the once that are used the most but the vacuum solar collectorshave increased more as a percentage the last couple of years.The biggest question asked regarding an investment in solar heating is if theplant is economically profitable. This question has no direct answer because itis dependent on a couple of prerequisites.

The report is a master thesis about energy efficient measures for an underground facility Hemsö fortress.Several proposals are evaluated economically.Statistics of the electricity used and measurements of several heat pumps are analyzed to find energysavings potentials.The results indicate that several units of a dehumidification system are responsible for over 70 % of theyearly electricity cost. The air that is being dehumidified by these units can otherwise cause damage ofculturally important interior designs.The proposal with highest profit suggests an alternative method for dehumidification. The cooler in theair handling units in Hemsö fortress have capacity to dehumidify the air. However complementary fansneed to be installed to circulate humid air towards the air handling units. The solution can be implementedin three different locations within the facility.

AimThe Swedish government has allocated a milliard Swedish Crowns on the project ?Ett handslag med idrotten?, (A handshake with sports), to make it possible for more children to participate in sports. The project goes on for four years and my work is an evaluation of the projects that have received fundings from Gästriklans Idrottsförbund for the second year. One aim is to see how many pupils that have been involved with the projects and especially the numbers of pupils earlier not active in a sport club and the number of girls. It is interesting to see what?s in common in the sport clubs that have had a large number from those two groups.

This master thesis consists of an investigation of the profitability per hectare in privatly owned forest land. The investigation is based on data collected from Skogsstyrelesen, Riksskogstaxeringen and Skogsforsk. During the last twenty years the prices on pulp wood and saw log have substantial decreased, but during the same time the the volumes from final felling have increased and the cost for felling has decreased, this investigation shows how the netprofit per hectARE after final felling has changed between year 1980-2005 This investigation shows that that the netprofit has stayed on a stable level during the years 1985-2005 even though prices pulp wood and saw log decreased. Much indicates that the demand of swedish pulp wood and saw log will continue to be strong or even stronger wich will give increased prices and an higher netprofit after final felling in the future.

The product structure of the fuel tank installation is one of the most complex product areas at Scania. Caused by the number of parameters, which affect the fuel tank installation, a product structure is created which is very difficult to handle. Knowledge exist that the structure in a nearby future will be considerable more complex. The purpose of the study has been to understand in why this complexity exist and find ways to break the trend of a growing product structure. The goal was to achieve a more standardized fuel tank installation.A theoretical study was performed in order to bring knowledge in relevant areas both in general theory but also in documentation at Scania.

The purpose of this developmental research was to test the new way of working when the students were to take part in planning of cooking during the lessons in home and consumer studies, because the aim of the school is to teach the students to take the responsibility for their studies. The two first lessons should be used by students in the group to plan and organize their meal. During the third lesson the students must be responsible for cooking ready their meal and afterwards they must evaluate the results. The results of this new way of working was new for the students and they thought it was fun to be responsible for cooking during these lessons in home economics. The students in the groups were of wixed ability and they developed their knowledge from the levels of their ability.

Introduction: Bokföringsnämnden started the K-project in 2004. The purpose was to collect rules and standards for different categories of companies in a complete set of regulations. Small businesses were given the option to choose between K3 which is the main regulatory and K2 which is a simplified regulatory framework. One specific difference between the regulations is that companies may not capitalize development costs if the company applies K2, this may causes problems for the companies that can give rise to such costs.Purpose: The purpose is to explain the problems that companies have identified in the choice of regulatory frameworks and the implications that may follow the specific rule in K2 on the company's activities and financial report.Frame of reference: K3 contains definitions and requirements that must be met so development costs can be capitalized in a company. Information presented in the financial statements should be relevant to the reader.

Introduction: A general guideline was introduced on October first 2010 regarding a mortgage cap, limiting the degree of leverage of housing as collateral. Through the new guidelines the marked conditions concerning consumers? choice of mortgage has changed. The consumers are limited in the sense that they can?t only use mortgage when purchasing a house.

This thesis work has been performed at Volvo Aero Corporation in Trollhättan, at the department of ?hot structures? involving aircraft engine GP7000. The purpose with the study was to investigate the possibility to reduce size of the forging of flanges on the rear turbine frame when purchasing. Thereto examine the parameters that affect the flanges motion during the manufacturing process. The goal was to provide Volvo Aero with foundation to later bring in slimmed forgings.

This degree project has been carried out in cooperation with Enertech AB in Ljungby and is pilot study to automating all current manual soldering. The soldering process accounts for a large part of the processing cost in the production of a heat pump. The process is also a quality risk and has a major impact on the lifetime of the final product.The Main task of this project has been to evaluate automation of the soldering process, to develop automation solutions and a principle layout, to draw the design changes required for the automation and to calculate the supposed solution.This pilot study has resulted in a suggested automation solution using laser as a heat source for soldering. Calculations of the solution show that a automating a laser soldering cell is very profitable..

With the help of large amount of archive material I have examined how Gustavsberg in Värmdö were affected by the great labor migration in Gustavsberg porcelain factory during the period 1869-1924. I have chosen to investigate how the municipality dealt with the poverty relief issue out of the labour immigration perspective. To my surprise I found out that Värmdö was not responsible for Gustavsberg in the poverty issue. The workers belonged to the factory, which had a relatively well-developed system of poverty relief in place. This is not to say that the workers received any support from the factory to any great extent.

In this thesis you will be able tofollow the design work of a drumtest. A tool that by having a rotatingdrum with equally positioned obstacleswill simulate the conditions a mountainbike rim will pass through.Initially there is a specification ofsome parameters and requirements thatthe design had to fulfill. There is alsosome brief background information aboutwhy a drum test is required for abicycle rim manufacturers and about thecompany Innolite Design AB that thisthesis is done for. After that itfollows an extract from conceptgeneration with the chosen concepts andsolutions but also some of the conceptsthat were not chosen.The thesis also contain a part where thereader cangain a deeper understanding of how thedesign works as well as some moredetailed facts about how the choice ofmaterials, their thicknesses, etc. havebeen made.

The energy consumption continues to increase as the use of electronics and energy consuming equipment increases. The use of fossil fuels has to be phased out for this to be sustainable in the long run while the use of renewable energy continues to increase. A renewable energy source is solar energy but the production of heat and electricity are today very expensive compared to other energy sources and an important task for the solar energy market to grow is therefore to minimize the production cost of the solar collectors while increasing its efficiency to produce heat and/or electricity. One way to convert solar energy into heat is by using solar collectors and electricity can be produced by utilizing the produced heat, or by applying solar cells.This thesis aims to recommend a reflective material for the next generation solar collectors from Absolicon and to recommend a commercially available coating for the receiver tube of the solar collector. A market study has been carried out to investigate the cost-related aspects along with the optical and durable aspects for the optical material of the solar collector.

In this degree project we wanted to investigate if there are any possibilities to get a higher income from grain growing by giving the grain to hens instead of selling it. We were also wondering if the manure has any value or if it only cost the egg producer money. If the egg producer cultivate his own grain and is able to store it in layer is there quite much money to earn. Expensive pasture makes it profitability to pay up to 1,35 Swedish crowns for a kilo of wheat. In our calculating we?ve used calculation from the company Lantmännen.

The purpose of this thesis is to investigate the possibility to make small, cheap and ultra low power sensor platforms, connected in wireless networks for monitoring of home and industrial environments. The concept is based on ideas from our supervisor, Jerry Lindblom. The developed system consists of a generic platform for different sensors, a receiver and software. A GPRS module from RO Rollytech AB and a database from Gema Industri AB have been modified and used to demonstrate an example of a complete system. To the platform, it is possible to connect any resistive sensor and any sensor that can act as a switch.