At the end of 70s and the beginning of 80s, 18 terminals was built and used for Chipping wood residue from clear cuttings. Most of the terminals was terminated before the 2000s but with the high oil- and energy prices that we can see today there might be a place for these terminals again. The goal with the study was to analyze and compare economical differences between 5 different logistical systems, collected data was used with a set of formulas. The systems include long range transport of slash, Chips and bundles. Three of the systems include transport by lorry to industry the last two includes a terminal with access to train transport.

Finnhamn is a small group of islands in the Stockholm arChipelago. At Stora Jolpan, the biggest island, there is a hostel. The main building was built in 1915 and is called Utsikten. The purpose of this project is to on behalf of the ArChipelago Foundation (Skärgårdsstiftelsen) find alternative systems that can replace the existing heating system of Utsikten (an oil-fired boiler and electricity heaters) to a system with renewable energy. The alternative system that this project focuses on is a system of solar collectors combined with a wood Chip boiler.

Since their invention in 1999, CubeSats have become a widespread standard for small picosatellite missions. CubeSats allow for quick development of satellite payloads and launch in space without the high costs of a normal satellite. Emphasis during the CubeSat design process is placed on use of commercialoff- the-shelf (COTS) components and reuse of previously-designed units.This report describes the interfacing of a scientific magnetometer, the Small Magnetometer in Low-Mass Experiment (SMILE) to such a CubeSat mission, the Space Weather using Ion spectrometers and Magnetometers (SWIM). Design of a complete platform for use in multiple such missions is presented here.Modularity is one of the key aspects followed in the course of the work. A new board containing the analog pick-up and compensation circuitry for SMILE has been designed to fit inside a CubeSat frame.

Modern semiconductor design methods makes it possible to design increasingly complex system-on-a-Chips (SOCs). Testing such SOCs becomes highly expensive due to the rapidly increasing test data volumes with longer test times as a result. Several approaches exist to compress the test stimuli and where hardware is added for decompression. This master?s thesis presents a test data compression method based on a modified facsimile code.

The fork lifter Chipper truck is a concept which has been developed for harvest and transport of bio fuel. The system consists of one fork lifter Chipper truck and 1, 2 or 3 transport lorries, usually two, which serves the fork lifter Chipper truck. The system is driven by the fork lifter Chipper truck that produces Chipped material into a container on the truck. When the container has been filled the truck drives to the landing site where it?s offloaded.

Detta examensarbete är utfört vid Luleå Tekniska Universitet på uppdrag åt Hägglunds Drives AB i Mellansel. Hägglunds Drives tillverkar kompletta hydrauliska drivsystem, som inkluderar hydraulmotorer. I en hydraulmotor uppstår det slitage när metalliska ytor kommer i kontakt med varandra när till exempel ett lager får otillräcklig smörjning. Slitaget ger upphov till metalliska partiklar som cirkulerar i hydrauloljan och samlas upp i ett filter. Genom att samla upp och studera slitagepartiklarna kan man uttala sig om hydraulmotorns kondition.

The moisture content in 10 deliveries of tree parts and 10 deliveries of wood residues were measured with different methods to analyze the quality of procedure used at Dåvamyran today. At the same time a survey was made on the measure procedures used at heating plants in Sweden The majority of the heating plants in Sweden use weight and moisture content as base for payment but at some plants only volume. The moisture content is usually estimated by drying wood Chips in an oven but few plants a visual estimation is used. At few plants moisture content is estimated spectroscopicily. The techniques using near infra read light and other electromagnetic are still at a test stage. The methods of measurement used today are quit unreliable for the individual deliveries and there is a risk for systematic mistakes.

Stump wood is a hot alternative when the heating plants demands more and more forest fuel. The aim with the study has bean to calculate the costs in four different systems for transportations of stump wood, examine if there are any differences in fuel quality for the stump wood in the different systems, analyse if the fuel quality in stump wood is affected with the time it lays by the road side and how much space the stump wood demands on the road side. To calculate the costs for the different systems a system analysis was carried out, where some of the costs were collected through field studies on Holmen Skog stump experiment and other costs were collected from literature and contacts. Data for the fuel quality study was collected from Eons heat plant in Norrköping. Data for the study of how much space stump wood takes along a roadside was collected from field studies.

Bioenergi är en stor industri i Sverige och står för en betydande del av energiomsättningen. Bioenergi i form av flis förvaras runt om i landet på hög i väntan på förbränning. Då högarna läggs upp startar olika processer som värmer upp stacken, ofta till temperaturer på 50°C under det första dygnet. En vanlig ansats i litteraturen är att denna temperaturstegring beror på aerob nedbrytning. Arbetet ämnar undersöka om denna uppvärmning endast beror av mikrobiella aktiviteter.

This report is a bachelor's thesis of two students from the Energy and Environment degree at KTH Stockholm. Grinda is an island situated Stockholm arChipelago. Skärgårdsstiftelsen is landowners and manages the area. Grinda Wärdshus, a guest house located in the island, currently uses an oil-fired boiler as a heating system. The aim of this thesis is to investigate whether wood Chips or pellets is, from a sustainability standpoint, a suitable heating method for the guest house.

Storage of biomass is often associated with problems such as heat development, dry matter losses and reduction of fuel quality. The rise in temperature can potentially cause a risk of self-ignition in the fuel storage. Moreover, emissions from storage piles can cause health problems in the surrounding. The dry matter losses and reduction of fuel quality can have economical effects. The aim of this thesis project is to develop guidelines on how to store large amount of biomass at Vattenfalls heat and power plants in an optimal way.

I dagens samhälle finns inbyggda system i allt från vattenkokare till rymdraketer. För att möta användarnas ständigt ökande krav på prestanda och funktionalitet måste hårdvaran i dessa system utnyttjas optimalt. Detta kan göras genom att konstruera hårdvara specifikt för den aktuella uppgiften eller att använda en mer generell hårdvara, där istället mjukvaran är anpassningsbar. I många fall kan det vara lämpligt, och i vissa fall även nödvändigt, att blanda dessa metoder för att lösa en given uppgift. En kraftfull processor kan exempelvis kompletteras med en accelerator uppbyggd av specifik hårdvara.