The Rya power plant in Borås produces district heating, district cooling and electricity. The plant is owned by Borås Energi och Miljö AB and is run by Dalkia Facility Management AB.In order to get the best heat exchange from the district hot water a pair of twin pumps and a turbine circuit pump are used as return pumps. Turbine circuit pumps are used to increase the pressure through the heat exchangers at the power plant. The pumps are in use when the flow is over 2 000 m3 h-1 and during the summer when re-cooling is used to improve the effectivens of the heat boilers.Since the pumps, that are parallel connected, rotating at a fixed rate per minute, the pressure is regulated with regulating valves. This report shows that during the 4,300 hours that the pumps where in use, energy corresponding to 590 MWh was wasted.

The aim of this report is to give a concise description of curtain walls, what it is and why they are used. It is also a description of six different but commonly used design technologies. By giving a detailed description of the different types and there special properties, the pros and cons will be clarified. The three most interesting alternatives were selected to be included in a test, to show the best alternative from a certain point of view.The parameters are:? Environment? Cost? Ergonomics? Isolation against noise and fire? DurabilityThese are important parameters in the planning and design phase.

The purpose of the study is to highlight the issue of student loans securitization, and assure the importance and benefits that could be realized by performing such a transaction. The methodology is a case study for The National Board of Student Aid. It is a qualitative study, mainly using interviews, literature and scientific articles. By using this information we construct a securitization transaction structure ?CSN 2006-1?, and conduct a cost/benefit analysis.

In order to suggest improvements for the logistics of STARKA, we felt that we had to analyze all the activities which were related to STARKA's logistic processes. Our primary analysis consisted of a rough but comprehensive description of different functions in the company, and the relationship between them. This was performed by following a typical order through the company to see which functions were affected by the order.Since we needed a more thorough view of the company, we decided to analyze the different products STARKA currently has on the market, focusing on economic data such as turn-over, profit, profit margin, deficiency cost and cost of warehousing. We also analyzed the company's choice of manufacturing processes, organization, warehousing processes, strengths and weaknesses.These analyses gave us a clear understanding of the company and its processes. STARKA is a small, function oriented company with a wide range of products.

The purpose of this Master Thesis is to analyze what suitable hardware platforms there are on the market in order to build a low price control and information system for mobile applications, called small display module. The thesis will be underlying material for making a decision for further development. The result of the thesis consists mainly of a Windows CE kernel and a schematic for a CPU card, on which it would be suitable to build the display module. Another major part of the report is the introduction of different techniques that could be of interest when designing a processor based system. The processor architecture that was chosen is the x86.

The purpose of this essay is to study and compare the air traffic with the train traffic between Gothenburg ? Stockholm. The study is based on three different perspectives: travelling time, travelling cost and the environmental effects. With those three factors included in the study, it will be more useful to determine if the unnecessary travel exist.This essay is based on quantitative information which has been gathered from the booking system of the train- and airline company?s websites.

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 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.

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..

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.