Research in solar energy is taking big steps in both solar heating and solar electricity. It´s not only the technologies alone, but also the combination of both solar electricity and solar heating which is what is called a solar hybrid. The idea of a solar hybrid is that a solar cells efficiency decrease with increased temperature and can with help from a solar collector be cooled and the heat can be utilized. This thesis report compares heat production and electricity production with respect of, in first hand, a solar hybrids geometry in the cooler. The theory chapter describes solar heating and how different solar cell technologies work and their environmental impact at the production and how compatible these technologies are for the solar hybrid.

Följande arbete utfördes i samarbete med m4solutions AB, Halmstad, och Volvo Buses AB, Göteborg.Volvo?s bussar använder idag luftintag vilka de önskar minska kostnaden för, varför en instruktion har utformats för att bistå kommande förbättringsarbete av luftintag med information och stöd. Föreliggande projekt, vilket genomfördes i samarbete med kandidatarbetet Instruktion för optimering av luftintag av Hung & Bodin (2011), bistår denna instruktion med CAD- och beräkningsunderlag. Arbete resulterade i en planering, analys och utvärdering av flödesberäkningar för två typer av luftintag, vilka används av Volvo idag. Baserad på denna analys presenteras förslag till förbättringar för kommande flödesberäkningar. För att möjliggöra ett enkel skapande av CAD-modeller av luftintag skapades även ett CAD-underlag i programmet Catia V5. I denna kan användaren genom ett antal enkla val utforma ett luftintag, bland annat för användning i olika datorstödda beräkningar..

We were assigned to do this master thesis by Husqvarna AB who at the time for this thesis just had implemented a new material and production planning system called Replenishment system. Husqvarna AB wanted us to examine the effects of their new planning system to see if it was profitable or not. Husqvarna AB had for a time considered their delivery and supplier service to bee their biggest problem and they wanted to solve this problem by improving the communication with all involved actors in the logistic chain, which they hoped would result in a better mix of products in their warehouses. The aim of this report was therefor to analyze eventual effects for Husqvarna AB when changing from a traditional material- and production planing system to a more information intensive one. The result of this report showed effects on decreasing administrational routines and improved flexibility and lead-times.

This report describes the results of the project "Concept development of jet engine inspection plugs" carried out in the spring of 2008. The work was done at the department of product definition at the company Volvo Aero in Trollhättan. The objective of the work was to develop concepts for a "Volvo-unique" inspection plug. The work is part of Volvo Aero's focus on proprietary (self-developed) technologies. Inspection plugs can be found on virtually all aircraft engines and gas turbines.

?Optimizing the workflow of hydraulic reservoir tanks? is a degree project made by Jonas Olsson, student within the faculty of technology and science, during spring semester 2012. The project comprise 22,5 ECTS.Volvo Construction Equipment, located in Arvika, was the client in this project. The mentor at Volvo CE was A?sa Barck, and the mentor at Karlstad University was Monica Jakobsson.

Följande arbete utfördes i samarbete med m4solutions AB, Halmstad, och Volvo Buses AB, Göteborg.Volvo?s bussar använder idag luftintag vilka de önskar minska kostnaden för, varför en instruktion har utformats för att bistå kommande förbättringsarbete av luftintag med information och stöd. Föreliggande projekt, vilket genomfördes i samarbete med kandidatarbetet Instruktion för optimering av luftintag av Hung & Bodin (2011), bistår denna instruktion med CAD- och beräkningsunderlag. Arbete resulterade i en planering, analys och utvärdering av flödesberäkningar för två typer av luftintag, vilka används av Volvo idag. Baserad på denna analys presenteras förslag till förbättringar för kommande flödesberäkningar. För att möjliggöra ett enkel skapande av CAD-modeller av luftintag skapades även ett CAD-underlag i programmet Catia V5. I denna kan användaren genom ett antal enkla val utforma ett luftintag, bland annat för användning i olika datorstödda beräkningar..

 The purpose with this thesis was to develop a designguideline which will simplify the development of new products that will be laser welded. The need for this thesis has come forward from the quality problems that Volvo Construction Equipment, Components Division is having with their laser welding manufacturing unit. The reason for the problems emerges from the bad communication between the development unit and the manufacturing unit within the company when the products produced today was developed. This resulted in products that were hard to and in some cases almost impossible to weld. To avoid these problems from occurring again it was needed to gather the experiences within this area and compile it and present in a brief a pedagogical manner. The information for the groundwork of our results has been gathered by interviews of several key persons in Volvo Construction Equipment, Components Division.

Lean Production har sedan länge enbart varit förknippad med tillverkningsindustrin och främst Toyota genom Toyota Production System(TPS). På senare år har Lean Production i allt högre grad introducerats och integrerats i tjänsteföretag under beteckningen Lean Service. Bankbranschen är en bransch där aktörer globalt anammat de bakomliggande filosofierna av Lean Production och Lean Service. I det här arbetet har en undersökning gjorts kring huruvida Lean Production existerar inom svenska banker och om så är fallet hur filosofierna inom Lean Production präglar bankerna. De tre bankerna som valts för undersökningen är de svenska storbanker Nordea, SEB och Handelsbanken.

The aim of the study was to install a biogas system consisting of three tubular polyethylene biogas digesters at a rural household in Malawi and to evaluate the constructed biogas system with regards to relevant system parameters. The purpose was to evaluate if the technology is a possible solution to reduce deforestation and support Malawi in climate change mitigation and adaptation. The study was carried out in the southern part of Malawi in cooperation with the University of Malawi. Locally available materials were used to construct and install the system. Three different feed materials, cow, goat and a mix of cow and goat manure, were used in order to determine which one was best suited to utilise as a digester substrate. After the installation, measurements of temperature, pH, biogas production, biogas composition and system functionality were made. The results of the study show that a biogas system with tubular polyethylene biogas digesters can be successfully installed at a rural household and that the most suitable feed material is a mix of cow and goat manure.

Former studies have shown that a considerable part of industries? energy usage can stem from idle times in the production. This thesis, carried out at Siemens Industry sector, evaluates the potential for using the control system to automatically put machines into energy saving mode during idle times. The main part of the thesis consists of a case study performed on machine tools at a Scania production site in Södertälje. Through load measurements the potential for energy savings was determined.The results show that there is a great potential for energy savings during idle times at the site.

The purpose of this study is to increase the understanding of activities, flows and waste in a company's production process. By performing a value stream analysis, non-value adding activities are identified in a production process and then the suggested improvements that can reduce lead times will be stated. The value-stream mapping identifies the flow of information and the flow of material in a production process and this provides the basis for the identification of non-value adding activities.We conducted the study at Lammhults Möbel AB in Lammhult Sweden, where the production flow of Spira-21 has been investigated. This to identify any non-value adding activities that affect the flow negative and consumes time and money in a non-value adding way.A reasonable approach for the project was taken by studying the methodologies and theories. We conducted interviews and site surveys at Lammhults Möbel AB where the flow of information and material in the production process were investigated.

Följande arbete utfördes i samarbete med m4solutions AB, Halmstad, och Volvo Buses AB, Göteborg.Volvo?s bussar använder idag luftintag vilka de önskar minska kostnaden för, varför en instruktion har utformats för att bistå kommande förbättringsarbete av luftintag med information och stöd. Föreliggande projekt, vilket genomfördes i samarbete med kandidatarbetet Instruktion för optimering av luftintag av Hung & Bodin (2011), bistår denna instruktion med CAD- och beräkningsunderlag. Arbete resulterade i en planering, analys och utvärdering av flödesberäkningar för två typer av luftintag, vilka används av Volvo idag. Baserad på denna analys presenteras förslag till förbättringar för kommande flödesberäkningar. För att möjliggöra ett enkel skapande av CAD-modeller av luftintag skapades även ett CAD-underlag i programmet Catia V5. I denna kan användaren genom ett antal enkla val utforma ett luftintag, bland annat för användning i olika datorstödda beräkningar..

Rwanda is one of the poorest countries in the world and about 70-80 % of the population lives in rural areas. The land is strongly affected by land erosion which makes it difficult for the agriculture and food production. Agroforestry is a system where tree plantation is combined with livestock- and crop production. The system provides soil fertilization and binds the soil together. Some of the trees used in agroforestry systems are also used as fodder.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active databases is usually specified in ECA-rules.

This thesis work resulted in a template for how the thermal spray process can be controlled through robot programs. The robots today and their programs need to be replaced, therefore a new structure which can be matched with the new robot systems is needed. The work is limited to only concern structured programming on the new robots on Thermal Spray Centre (TC) with the programming language Rapid. The basic data for the program was retrieved from interviews with concerned personnel at TC, from studies on process parameters for thermal spray and from existing specifications at Volvo Aero Corporation (VAC). The thesis work briefly describes the process thermal spray and the four methods used at VAC.