Examensarbetets uppgift är att arbeta fram ett exempel på incitament för att motivera hyresgäster att vara med och investera i energieffektiviseringar. Arbetet innefattar en energikartläggning av en fastighet för att kunna visa vilka besparingar som kan göras och vilka investeringskostnader det innebär. Den aktuella fastigheten har alla energikostnader inbakad i hyran vilket leder till att hyresgästerna inte har incitament till medinvestering. Energikartläggningen innebar en nattvandring för att se vad som använde energi under natten när verksamheterna stod still, insamlande av timdatafrån Umeå Energi, inventering av belysning samt anskaffande av information om ventilation och kompressor. Kontakt med olika företag togs för att kunna få fram ungefärliga kostnader för effektiviseringarna.

In Sweden, a big part of the energy use is used in the housing sector. Political goals and targets are set up which the housing sector needs to work towards. Apartment buildings are a major part of the housing sector in Sweden and therefore reduction of energy use in these kinds of buildings are key to lower the energy use in Sweden. But there are not only political incentives to reduce the energy use. Some energy?saving measures are directly profitable and should thus be performed.

Idag är antibiotikaresistens ett allvarligt problem. En tillfällig lösning på problemet är att utnyttja synergieffekter som kan uppstå mellan olika typer av antibiotika. Det innebär att antibiotika skulle kunna ha effekt mot bakterier som har utvecklat resistens.I denna rapport har flera olika metoder, för att mäta bakterietillväxt, utvärderats. Dessa metoder indikerar om antibiotikakombinationerna har en effekt. Däribland har både kommersiella och nyligen publicerade metoder undersökts.

Det finns flera olika sätt att konkurrera med en balpress på marknaden. Ett av dessa är att minska cykeltiden för en komplett pressoperation. Härav formulerades en problemställning som lade grunden för examensarbetet. Problemställningen löd ?Metod och anordning för åstadkommande av stegrande presskraft i balpress, Nättraby Verktyg AB.? Sambandet mellan minskad cykeltid och stegrande presskraft gav lösningen med varierande hastighet på pressplattan. För att lösa problemet valdes en frekvensomriktare som omriktar matningsfrekvensen till elmotorn.

Electrolux Laundry Systems is the world leader in manufacturing professional laundry equipment.The machines are used in the hotel sector, elderly care, in multifamily houses, laundry bars, and incommercial and institutional laundries.If there is oil or grease left in the clothes after washing may the heat from the dryer cause a chemicalreaction. This reaction may, under certain circumstances cause a fire inside the drum. Competitors toElectrolux has developed its own systems that extinguishes fire inside a tumble dryer and customershave expressed desire to purchase a fire-extinguishing system. Therefore, the project team receivedthe task by Electrolux to develop a fire-extinguishing system that extinguishes a fire in a tumbledryer.The purpose of the project has been to develop a system that both detects and responds to fire in anindustrial tumble dryer to meet the competitors and to satisfy customers' requirements.The goal was to develop a fire-extinguishing system for Electrolux Laundry Systems and develop afully functioning prototype.The project began with information searches on a variety of methods to both detect and extinguish afire. Subsequently, a number of different methods were used to develop a final solution and make aprototype.The result of the project is a fire-extinguishing system that extinguishes a fire inside a dryer.

Denna rapport är en undersökning av en äldre kontorsfastighet belägen i Gävle. Rapporten är framtagen tillsammans med SWECO Systems i syftet att fastställa graden av upplevda problem i deras egna lokaler, inverkan på komforten, inverkan på energianvändning och för att ge en grund att kunna basera framtida beslut om lokaler på.Problemen har uppkommit i olika former där medarbetare har upplevt dåliga luftflöden, varma temperaturer i aktivt kylda kontor, dragiga miljöer, högljudd ventilation och lukt från andra verksamheter. I denna rapport har metoden för utredning varit en teoretisk utredning av aktuellt system, uppföljt av mätningar för att säkerhetsställa att praktiken stämmer överens med teori. Denna data har sedan förts in till simuleringar i IDA ICE 4.0 för att ge utökad info. Mätningarna som har utförts har koncentrerats huvudsakligen på tryckmätningar, temperaturmätningar och flödesmätningar av ventilation och kylsystemen men det har även utförts andra mindre kontroller på ljud och korrosion för att kunna dokumentera och diskutera problemen i rapporten.

Syftet med denna undersökning var att ta reda på om en viss ?omotiverad? klass yrkeselever delade upp sina ämnen i olika kategorier och hur detta påverkade deras motivation, särskilt i engelska. Tidigare forskning antyder att yrkeselever ofta delar upp sina ämnen i ?praktiska?, eller yrkesämnen och ?teoretiska? eller gymnasiegemensamma (GG) ämnen och att de har sänkt motivation i de sistnämnda. Tolv elever i en värme, ventilation och sanitets- (VVS) klass svarade på en enkät och tre av dem intervjuades individuellt.

In the next few years the pollutants loading at the Slottshagen wastewater treatment plant in Norrköping is going to increase due to the reason that one of the waste water treatment plant in the district will be shut down.A survey of how these different pollutants are divided in the treatment process is therefore necessary for mapping out both the loading and treatment efficiency.This can be achieved by studying mass balances.Mass balances were carried out for the water treatment process for the mechanical/chemical,biological and the chemical stage.The mass balance studies show that the treatment efficiency was very good. However in order for the mass balances to be quite consistent and to ensure complete coverage of results and conclusions i.e. more reliable results, sludge samples should be collected and taken at different times per day and the influent rate should be investigated.In this work mass balance has been set up in order to illustrate and identify the factors that should be considered and taken care of for further estimation using mass balances in the future. Furthermore this survey results in a calculating model for the mass balances at thisplant.This calculating model is used as a tool to facilitate future calculations for mass balances for the water treatment process at Slottshagens wastewater treatment plant.Moreover it provides a basis for carrying out further estimation of the treatment process in the near future.In this project the importance of some operating parameters was also taken in consideration.This calculating model can be modified so that calculations of such operating parameters i.e. sludge loading and sludge age can be easily performed.Such information can be used further to evaluate different operation alternative in order to ensure an optimal use of the treatment process with in the plant..

Sedan 2005 ska företag pröva goodwills nedskrivningsbehov minst en gång årligen. Det här regleras i IAS 36 där det finns instruktioner om hur nedskrivningsprövningarna ska gå till. Dock har det i tidigare studier konstaterats att informationen som lämnas i anslutning till prövningarna inte är tillräcklig för att ge läsaren den användbarhet som bör finnas. Därför har författarna av uppsatsen genomfört en fallstudie med syfte att beskriva hur åtta företag motiverar sina nedskrivningsprövningar.Syftet med uppsatsen var att studera hur åtta börsnoterade företag som redovisar enligt IAS/IFRS värderar sin goodwill i samband med nedskrivningsprövningar. Tyngdpunkten låg på de motiveringar som låg till grund för värderingarna.Uppsatsen grundar sig på en kvalitativ fallstudie där årsredovisningar för åtta företag har studerats.

Tail-biting in pigs is an animal welfare issue and in Sweden during 2002 the producers lost tree million Swedish crowns because of tail biting. This economic loss depends on the pigs which are discarded at slaughter because of tail biting. Tail biting can be separated into two stages, "pre-injury" and "injury". The aim of this study is to investigate if tail biting depends on environment or genetic background.A lot of research on the environments effects on the behaviour of pigs but not so much on the genetic effects has been performed. The frequency of tail biting in pig farms influence among others of environment enrichment, ventilation, gender and breed of the pig.

The content of the following report is the summarized result of three students thesis at Blekinge Institute of Technology in co-operation with Water Jet Sweden AB. This report will give the reader a description of principles how to measure the abrasive mass flow in a waterjet cutting system. The work began with a visit to Water Jet Sweden AB to get a closer look at the problem. When the analysis of the problem was done the criteria were defined in the form of demands and desires. The main task of the criteria was to guide the search for the solution. The work proceeded with an extensive search for abrasive flow meters along with obtaining information about flow measurement in general. When the search for abrasive flow meters resulted in nothing all the efforts were concentrated on finding a principle of measurement that could cope with the criteria.

At the Division of Electricity at UppsalaUniversitythere are ongoing researches, including a research concerning turbo generators.Turbo generators produce a large share of electricity in the world; however they are costly mainly due to the fact that the cooling and ventilation that are needed to eliminate the excess heat from the generators are expensive. Turbo generators work with high efficiency and in this project, the main task is to simulate a generator while taking into account that the generator must be designed against self-oscillation, centrifugal force, exhaustion and heat. The turbo generator must be simulated without being too expensive and complicated.In this project, the dimensions of the turbo generator depend on the efficiency of it, and where the losses are in the generator. Furthermore, the optimum values need to be chosen with the help of the ACE simulation program. The report begins with an introduction describing the project followed by a task description that is dealing with the project.

Automatic trimmerhead is an examination project for making an automatic trimmerhead for grass trimmers with the user and functionality in focus. Our perception is that a happy user is a user who can pick up his or her trimmer, use it and put it back to its place when the job is done. It should not be necessary to interrupt work and perform maintenance on the machine just to make it work as promised.The project has been made in collaboration with the company Husqvarna, which is one of the biggest actors dealing with garden machinery on the market. Together we determined the project goal, ?To invent, construct and test a brand new concept for how an automatic trimmerhead can look and function?.At this day there are several different automatic trimmerheads on the market, both semi and fully automatic.

This paper is written as an examination paper at the University of Jönköping. The subject is chosen by Peab Sweden in Jönköping with whom further cooperation has been hold. The aim is to compare building methods and building materials in Sweden, Finland and Germany for further inspiration for Peab?s own market.BackgroundThe development of the construction industry develops new materials and methods to the market which has been forced by shorter construction times and the environment aspect. To pursue the development, further knowledge exchange should exist between the countries.

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.