Klimatförändringar på vita duken. : Passiviserande underhållning eller mobilisering.

Vid en tillbakablick på de senaste 25 års spelfilmer kan man se hur ett växande klimathot funnits med som en berättelseingrediens i ett antal spelfilmer från Hollywood mainstreamfåra. (Axelson 2008). År 2004 kom katastroffilmen The Day after Tomorrow som gjordes till objekt för en brittisk publikstudie. I denna studie analyserar forskargruppen hur The Day After Tomorrow påverkade publikens tankar kring klimatförändringar (Lowe et al. 2006). Den irländske forskaren Pat Brereton har initierat ett projekt inom HERA (Humanities in the European Research Area) med ett forskningsfokus på hur medier och film bidragit till ett ekologiskt paradigm som enligt Brereton, långsamt växer sig allt starkare hos den europeiska allmänheten (Brereton 2008). I mitt paper vill jag diskutera Breretons hypotes om ett ökande ekologiskt sentiment under framväxt hos en europeisk allmänhet över tid och hur denna hypotes bör underkastas en kritisk diskussion utifrån ett receptionsperspektiv. Vad säger existerande publikorienterad receptionsforskning om på vilket sätt klimatförändringar gestaltade på film kan ha förmågan att beröra processer relaterade till människors teoretiska övertygelser om tillvaron, grundläggande värderingar samt en livsåskådningsmässig grundhållning (Lowe et al. 2006, Axelson 2008)?

Electricity Supply Solutions for an Educational Center in Tanzania

The aim of this study was to investigate electricity supply solutions for an educationalcenter that is being built in Chonyonyo Tanzania. Off-grid power generation solutions andfurther optimization possibilities were studied for the case.The study was done for Engineers Without Borders in Sweden. Who are working withMavuno Project on the educational center. The school is set to start operating in year 2015with 40 girl students in the beginning. The educational center will help to improve genderequality by offering high quality education in a safe environment for girls in rural area.It is important for the system to be economically and environmentally sustainable. Thearea has great potential for photovoltaic power generation. Thus PV was considered as theprimary power generation and a diesel generator as a reliable backup. The system sizeoptimization was done with HOMER. For the simulations HOMER required componentdata, weather data and load data. Common components were chose with standardproperties, the loads were based on load estimations from year 2011 and the weather datawas acquired from NASA database. The system size optimization result for this base casewas a system with 26 kW PW; 5.5 kW diesel generator, 15 kW converter and 112 T-105batteries. The initial cost of the system was 55 875 €, the total net present cost 92 121 €and the levelized cost of electricity 0.264 €/kWh.In addition three optimization possibilities were studied. First it was studied how thesystem should be designed and how it would affect the system size to have night loads(security lights) use DC and could the system then be extended in blocks. As a result it wasfound out that the system size could be decreased as the inverter losses would be avoided.Also the system extension in blocks was found to be possible. The second study was aboutinverter stacking where multiple inverters can work as one unit. This type of connectionallows only the required number of inverters to run while shutting down the excess ones.This would allow the converter-unit to run with higher efficiency and lower powerconsumption could be achieved. In future with higher loads the system could be easilyextendable by connecting more inverters either in parallel or series depending on what isneeded. Multiple inverters would also offer higher reliability than using one centralizedinverter. The third study examined how the choice of location for a centralized powergeneration affects the cable sizing for the system. As a result it was found that centralizedpower generation should be located close to high loads in order to avoid long runs of thickcables. Future loads should also be considered when choosing the location. For theeducational center the potential locations for centralized power generation were found outto be close to the school buildings and close to the dormitories.

Worries and possibilities in active citizenship : Three Swedish educational contexts

This article examines how the concept of active citizenship has been given a neo-liberal character by examining practice in three different educational contexts in Sweden. The concept of active citizenship has become influential in educational policy and practice throughout the European Union. The aim of this article is to highlight concerns at how this concept has come to be re-shaped by neo-liberal principles in Swedish education. The analysis highlights three themes, based on voice, ethical awareness and complexity and mutuality of lived experience, and argues that they provide the basis for a shift away from the present neo-liberal colouring of the concept.

Survery and simulation of energy use in the European building stock

the work towards increased energy efficiency. In order to plan and perform effective energy renovation of the buildings, it is necessary to have adequate information on the current status of the buildings in terms of architectural features and energy needs. Unfortunately, the official statistics do not include all of the needed information for the whole building stock.   This paper aims to fill the gaps in the statistics by gathering data from studies, projects and national energy agencies, and by calibrating TRNSYS models against the existing data to complete missing energy demand data, for countries with similar climate, through simulation. The survey was limited to residential and office buildings in the EU member states (before July 2013). This work was carried out as part of the EU FP7 project iNSPiRe.   The building stock survey revealed over 70% of the residential and office floor area is concentrated in the six most populated countries. The total energy consumption in the residential sector is 14 times that of the office sector. In the residential sector, single family houses represent 60% of the heated floor area, albeit with different share in the different countries, indicating that retrofit solutions cannot be focused only on multi-family houses.   The simulation results indicate that residential buildings in central and southern European countries are not always heated to 20 °C, but are kept at a lower temperature during at least part of the day. Improving the energy performance of these houses through renovation could allow the occupants to increase the room temperature and improve their thermal comfort, even though the potential for energy savings would then be reduced.