Opcon Powerbox is a product developed by Opcon together with the underlying company SRM (Svenska Rotor Maskiner) where surplus heat from the industry is used through an Organic rankine cycle (ORC)?process to produce electricity. An ORC-process is a thermodynamic circle process in which a refrigerant is used as the working fluid. The refrigerant makes it possible for the circle process to operate at lower temperatures than the conventional Rankine process.In this master?s thesis a data analysis software for the Opcon Powerbox has been developed in which measurement data is retrieved and handled from the Opcon Powerbox.

Given that the oil prices have risen and the environmental regulations has become more stringent, the interest in operating efficiency has increased. The project has investigated the possibility of producing electricity from waste heat generated in the diesel process. One technique to utilize and convert energy into electricity is the ORC (Organic rankine cycle). This process is based on the Rankine process (the steam process), the difference from the traditional Rankine process is that instead of water as a working medium, an organic substance is used. The main component used in the process is a evaporator, a turbine, a condenser and a pump.

As a part of the fight against the global warming the energy production needs to be more efficient and redirected towards sustainable options. One alternative is cogeneration, which means that electricity and heat is produced in one plant. The purpose with this survey is to examine if there are any commercial available combined heat and power techniques, based on combustion of solid moist biomass, which are suitable to small-scale applications. The technique must be able to produce between 2 and 10 MW thermal and the heat demand is a Swedish district-heating system. When already published reports had been studied, the Organic rankine cycle (ORC) was chosen as the most suitable technique.

I svalhallen vid SSAB i Luleå sker det en omfattande energiförlust till omgivningen då stora mängder nyproducerat stål svalnar. I detta examensarbete studeras möjligheten att ta till vara den energin för att producera el med hjälp av Organisk Rankine Cykel (ORC) teknik. En viktig förbehållning är att inte nuvarande stålproduktion på något sätt får hindras. I arbetet undersöktes svalhallens förutsättningar och möjliga hinder för installation av en ORC. Det gjordes även en litteraturstudie över olika värmeväxlingssätt som kan appliceras på svalnande stålämnen.

The demand for district heating is expected to decrease in the future, due to competition from heat pumps and energy efficiency measures in buildings. Development of existing district heating systems is therefore necessary for district heating companies to maintain market shares. This Master?s thesis describes and investigates the heat and electricity production and profitability of a combined Organic rankine cycle (ORC) and heat pump that is integrated with an existing district heating system. The studied district heating system is utilizing heat from waste incineration. In Sweden waste constitute 20 % of the fuel mix used in district heating systems, and this share is expected to increase in the future.

The interest for organic food has grown a lot over the last 15 years. Even so, only 3.5 % ofthe share of wallet in Sweden goes to organic food. The purpose of this study is to examine and describe how retailers can get consumers to buy more organic fruits and vegetables. The study was carried out by visiting six Coop Konsum-stores, of which three performed poorly and three performed well in organic sales. We conducted interviews with the department managers, customer surveys and in-store observations.

SammanfattningI ett kraftvärmeverk binds en stor del energi i de varma rökgaserna. Genom att installera rökgaskondensering kan energi från röken tillvaratas. På kraftvärmeverket Skogsbacka i Lycksele har man tittat på möjligheterna att installera rökgaskondensering. Detta arbete syftar till att ta reda på om och vid vilka förutsättningar det skulle vara lönsamt för Skogsbacka att också investera i utrustning för elproduktion vid låggradig värme, för att på så sätt använda energin från rökgaskondenseringen. Idag finns flera tillverkare som erbjuder fristående aggregat som kan utvinna el vid låga temperaturer.

AbstractThe customer demand for ecological products has increased in recent years, within the garden industry this mainly concerns herbs and other edible plants. The organic trend is increasing and more people are aware of the environment and want to take responsibility for it through their purchases for their garden as well.In this essay the aim is to investigate customer demand and the possibility of selling organicperennial plants in eight garden centres on the Åland islands and in Gävle/Sandviken. I include two garden centres with an organic profile to get a wider point of view. I investigate the global market for organic perennials and look further into existing certification standards on the Swedish market today.The methods I have been using are interviews and a literature study.The study shows that the experienced demand for organic perennials is small in both of myinvestigated groups. The biggest motivation for starting to sell organic perennials would be to find a supplier of these plants and that more customer would ask for them.

According to the EEG-councils regulation nr 2092/91, all seed used in organic production must have organic origin. All seed which is offered for sale must be controlled by KRAV, and also comply with the rules of the seedlegislation. The seedlegislation contains demands respecting origin, quality, growingconditions and freedom from deseases. In this piece of work I will investigate the profitability of organic potatoseedproduction, and also what it takes to produce potatoseed. The workmethod has been to, with help from counsellors and growers, make some compareable calculations for foodpotatoes and seedpotatoes, and also with help from a literaturestudy investigate which requires an organic seedcultivation must fulfil. In this piece of work I found out that the organic potatoseedproduction still is to insecure to be profitable. The attack of potatoleafmould, which is out of control, cause unequal yields and this will bring that the new EU-rules, concerning organic seed, not seems defendable yet..

The objective of this study was to make an inventory and a potential analysis of the organic beef production in the region of Gävleborg, Sweden. A survey was conducted, where a questionaire was sent to all farmers in the region who had environmental subsidies concerning organic cropping systems in 2001. In total, there were 701 farmers, of which 46 % participated in the study. Three slaughter houses were interviewed to get their pictures of the development of organic beef production. The study shows that there are potentials and interests in the region to increase the production of organic beef.

SammanfattningI ett kraftvärmeverk binds en stor del energi i de varma rökgaserna. Genom att installera rökgaskondensering kan energi från röken tillvaratas. På kraftvärmeverket Skogsbacka i Lycksele har man tittat på möjligheterna att installera rökgaskondensering. Detta arbete syftar till att ta reda på om och vid vilka förutsättningar det skulle vara lönsamt för Skogsbacka att också investera i utrustning för elproduktion vid låggradig värme, för att på så sätt använda energin från rökgaskondenseringen. Idag finns flera tillverkare som erbjuder fristående aggregat som kan utvinna el vid låga temperaturer.

Background: Pesticides in conventional food may be related to morbidity and mortality. Furthermore pesticides have a negative impact on the whole ecosystem. Organic food can presume better health as they contain less chemicals and toxins and contribute to sustainable development efforts.Objective: The aim was to examine what attitudes consumers have regarding to purchase organic fruit, vegetables and root vegetables.Methods: The association between consumers? views on conventional food and organic food was investigated using questionnaire given to a population sample of men and women aged by 23-65 (N=60) in grocery stores and in a fitness center. The study was based on a cross-sectional study in a municipality in central Sweden.Results: Consumers were interested to buy organic food.

There are many eco-brands on food products. It can be confusing for the consumer to know which one to trust or choose and since July 2012, there is an EU law and a mandatory EU organic label that must be displayed on all food products marketed as organic, eco or bio.Organic brands from a consumer perspective have previously been studied in England. This is a similar study in the form of focus groups, to explore and examine how consumers perceive and trust organic brand or labels in Sweden. It also explores which knowledge consumers have regarding why a product has an organic brand and what it means.The study shows that consumers perceive organic brands by brand recognition rather than knowledge regarding what each label means. It also shows that the consumer is confused by and skeptical to the wide range of markings and symbols on organic food products.

The purpose of this study was to examine how food managers of Östergötland County disucss around their possibilities of reaching the government´s orientation towards 25 per cent of the food - procured, prepared and cooked in the school meal - coming from certified organic production. The study was a cross-sectional study in wich a qualitative approach was used. The sample consisted six food managers in Östergötland. Data processing was done through a semantic content analysis.  The result showed that involvment and intrest were significant factors for the introduction of organic food in the school meal. The three municipalities with the highest percentage of organic food used the SMART - concept.

AbstractFor several years, the organic food sales have increased, and more are choosing to buyorganic food of more diverse causes. Unfortunately the sales have slowed down the past year,a lot depends on the Swedish economy has been in decline and it has led to more will checkone more time on the price. But even if the sale value has decreased, the amount of organicfood has increased, it is because many stores have their own organic brands and they can pushprices down.The internet has become a great help in our daily lives, we do most our business via theInternet. But now we are not just paying our bills through the Internet anymore, we shopclothes, movies, music and books too. E-commerce was become more serious last decade andhas grown every year that has passed.