Purpose: Villas built before 1960 represent around 45% of the dwelling in Sweden. Since the average U-value in their walls is around 0,5 W/m2K, there is a great concern to improve  these values. The Swedish government's goal is to reduce energy intensity in the country by 2020 by 20 % from 2008’s values. The aim of this study is to reach phase renovation proposals taking into account energy and moisture on houses consisting of standing shelves. With this, the authors wish to contribute and encourage renovation of existing villas, which in turn can lead to reduced energy consumption. Method: This work is based on a case study of a 1940’s wooden house located in Skillingaryd. Measurements and parameters have been taken in order to calculate the house's specific energy usage in the BV2 analysis program. Document analyses and interviews have been used to get a deeper knowledge of existing conditions, and to suggest ways to utilise the material that the market offers nowadays. This should serve the purpose of creating as energy-efficient phase resolution as possible. Result: The study shows that an outer wall of a massive wooden house should keep a U-value of 0,15 W/m2K to meet the specific energy consumption of 90 kWh/m2 and year, when the other house is additional insulated. The study presents two refurbishment proposals supported by interviewed experts in the insulation and consulting industry. The first option leaves large parts of the old facade untouched, adding new insulation layers of the desired thickness. The second option advises to tear away all old panels into the shelf frame, thus re-building with new materials. Both proposals address the issue of how the facade should be refurbished in order to make it moisture proof. They mostly solve the problem by refurbishing it outwards and by eventually placing a vapor barrier for a maximum of one third in of the insulation. This vapor barrier may or may not be a watershed according to the experts. Some think it is unnecessary when the plank is considered sufficiently diffusion-proof; some believe that it will help to identify where a possible condensation might occur in the wall.  Consequences: The study shows that by means of additional insulation, BBR 24 recommended values ​​can be achieved for an exterior wall while keeping the façade moisture proof. One strength the study shows that the two reported renovation proposals achieve the same end result, although the interference on the facade varies in size. Therefore the authors of the above study recommend to tear down the old facade and build a new control wall with a finishing facade disc. This is when you face a vapor barrier on the façade with a vapor barrier that is laid on the old baselayer of the roof. Then a new roof construction could be built up with roof beams, shavings and roof tiles. As a result, a windy, yet proportional, construction can be created.   Restrictions: The study assumes that the entire house would be refurbished in order for the specific energy use to be possible. Furthermore, the work is based of a shelf shelter located at a particular geographical site. Due to this, the study also offers suggestions on wooden facades only.  Keyword: Plank body, Phase renovation, Specific energy use, diffusion, convection, U-value, air density.

La méthode de l’Analyse du Cycle de Vie (ACV) est devenue ces dernières années un outil d’aide à la décision « environnementale » pour évaluer l’impact des produits et des processus associés. La pratique de l’ACV est documentée comme un outil pour l’évaluation d’impacts, la comparaison et la prise de décisions « orientée produit ». L’exploitation d’une telle méthode pour les procédés de l’industrie bio-physico-chimique a gagné récemment en popularité. Il existe de nombreux faisceaux d’amélioration et d’expansion pour sa mise en oeuvre pour l’évaluation des procédés industriels. L’étude s’attache à la production de biocarburant à partir de la plante Jatropha curcas L. selon une approche « attributionelle ». Cette étude présente l’évaluation environnementale d’un agro-procédé et discute de l’opportunité de coupler les concepts, les méthodes et les outils de l’ACV et de l’IPAO (Ingénierie des Procédés Assistés par Ordinateur). Une première partie présente l’ACV appliquée à l’agrochimie. L’état de la littérature apporte des enseignements sur les diverses études qui mettent en évidence le rôle et l’importance de l’ACV pour les produits et les différents agro-procédés. La substitution des carburants classiques par les biocarburants est considérée comme une voie potentielle de substitution aux énergies fossiles. Leur processus se doit d’être évalué au regard de l’impact environnemental et du paradigme du développement durable, en complément des critères classiques, économiques et politiques. La deuxième partie aborde notre étude ACV de la production du biocarburant à partir de la plante Jatropha. Cette évaluation englobe la culture et la récolte en Afrique, l’extraction de l’huile et la phase de production de biocarburants, jusqu’à son utilisation par un moteur à explosion. À cet effet, les normes ISO 14040 et 14044 sont respectées. Basée sur une perspective « midpoint » avec les méthodes de calcul d’impacts, Impact 2002+ et CML, nous fournissons les premiers résultats de la phase d’interprétation (GES, appauvrissement des ressources, la couche d’ozone, l’eutrophisation et l’acidification). Cette étude démontre le potentiel de production de biocarburants de deuxième génération à réduire l’impact environnemental. Dans le même temps, elle révèle que l’unité de transesterification est le plus impactant. Nous identifions les limites de notre application selon une approche ACV « pure ». Dans la troisième partie, nous discutons des bénéfices attendus du couplage de l’ACV et des méthodes de modélisation et de simulation de l’ingénierie des procédés. Nous suggérons alors une amélioration de l’approche environnementale des systèmes de production. Nous fournissons un cadre de travail intégrant les différents points de vue, système, processus et procédé afin d’évaluer les performances environnementales du produit. Un outil logiciel, SimLCA, est développé sur la base de l’environnement Excel et est validé par l’utilisation de la solution ACV SimaPro et du simulateur de procédés Prosim Plus. SimLCA permet un couplage ACV-simulation pour l’évaluation environnementale du système complet de production de biocarburant. Cette intégration multi-niveaux permet une interaction dynamique des données, paramètres et résultats de simulation. Différentes configurations et scénarios sont discutés afin d’étudier l’influence de l’unité fonctionnelle et d’un paramètre de procédé. La quatrième partie établit la conclusion générale et trace les perspectives. / With the rise of global warming issues due to the increase of the greenhouse gas emission and more generally with growing importance granted to sustainable development, process system engineering (PSE) has turned to think more and more environmentally. Indeed, the chemical engineer has now taken into account not only the economic criteria of the process, but also its environmental and social performances. On the other hand LCA is a method used to evaluate the potential impacts on the environment of a product, process, or activity throughout its life cycle. The research here focused on coupling of PSE domain with the environmental analysis of agricultural and chemical activities and abatement strategies for agro-processes with the help of computer aided tools and models. Among many approaches, the coupling of PSE and LCA is investigated here because it is viewed as a good instrument to evaluate the environmental performance of different unitary processes and whole process. The coupling can be of different nature depending on the focus of the study. The main objective is to define an innovative LCA based on approach for a deep integration of product, process and system perspectives. We selected a PSE embedded LCA and proposed a framework that would lead to an improved eco-analysis, eco-design and eco-decision of business processes and resulted products for researchers and engineers. In the first place we evaluate biodiesel for environmental analysis with the help of field data, background data and impact methodologies. Through this environmental evaluation, we identify the hotspot in the whole production system. To complement the experimental data this hotspot (i.e. transesterification) is selected for further modeling and simulation. For results validation, we also implement LCA in a dedicated tool (SimaPro) and simulation in a PSE simulation tool (Prosim Plus). Finally we develop a tool (SimLCA) dedicated to the LCA by using PSE tools and methodologies. This development of SimLCA framework can serve as a step forward for determination of sustainability and eco-efficient designing.

The construction sector accounts for about one fifth of Sweden's greenhouse gas emissions. It is also the sector that produces the second most waste in Sweden. Today there is an increased need for housing in Sweden, at the same time as the construction sector must reduce its greenhouse gas emissions. Usually when renovating a building, construction products are disposed despite having a remaining service of life. The purpose of this study is to investigate how the reuse of construction products can be increased in the construction sector. And to find out how companies in Växjö work with reusing construction products. The work was based on the project Kv. Stommen, the project was about a new preschool in Vikaholm, Växjö. In the project the buyer had requested that some construction products should be reused. The purpose of the study was addressed by using interview methodology and partaking in focus group discussion with Godahåll during their meeting. According to the results there are seven challenges that must be overcome before the reuse of construction products in the construction sector can increase. The representatives from the companies in Växjö, who were interviewed had a positive attitude towards reuse of construction products. One conclusion is that there is an interest in the construction sector to use reused construction products and that it will increase in the future. Another conclusion is that by using reused construction products, the construction sector´s waste volumes can be reduced and contribute to a circular construction.

SCA Obbola är ett pappersbruk som satsar på framtiden och håller på att utöka sin produktion. Projektet kallas Expansion Obbola och fabriken planerar öka kapaciteten från 450 000 ton till 725 000 ton. Peab är utförandeentreprenad för projektet, arbetet startade år 2018 och förväntas vara färdigt till år 2023. I samarbete med Peab har ett examensarbete utförts på projektet Expansion Obbola för att ta reda på hur arbetet med materialspill ser ut i projektet i dagsläget och om möjligheten finns att minska mängden materialspill. Syftet med arbetet är att få en tydligare bild över materialspillet på projektet Expansion Obbola, för att vidare möjliggöra och utöka Peab:s arbete med materialspill på ett effektivt, ekonomiskt och miljövänligt sätt. Arbetet har även som syfte att bidra till Peab:s framtida arbete med materialspill. Vid produktionen av en ny byggnad uppskattas 30-40% av den totala kostnaden bestå av materialkostnader, vilket medför att om mängden materialspill kan begränsas kan det bidra till ett mer hållbart, ekonomiskt och miljövänligt arbete. Arbetet resulterade i att situationen på projektet Expansion Obbola består av svåra förutsättningar och att detta försvårar möjligheten till minskandet av materialspill betydligt. Tidspress, brist på ytor och begränsat med riktlinjer till hur man bör hantera materialspill är de främsta svårigheterna som projektet besitter. Efter genomförande av detta arbete anses det ändå finnas gott om utvecklingsområden för projektet gällande materialspill trots svårigheterna och några av de presenterade förslagen på hur man kan arbeta med att få en minskad mängd materialspill är följande: Ändra dag och tiden för revidering av ritningar, öka samarbetet mellan arbetsledare, byta virket vid formsättning till en lägre kvalité för att bespara på miljön samt utöka samarbetet med projektörerna. Projektet Expansion Obbola anses därav trots svåra förutsättningar, besitta goda möjligheter att förbättra sitt arbete med materialspill och potentiellt kunna minska mängden material som slängs i onödan. / SCA Obbola is a papermill that is investing in the future and is expanding its production. The project is called Expansion Obbola and they plan to increase their factory's capacity from 450,000 tonnes kraftliner to 725,000 tonnes. Peab is the contractor for the project, it started in 2018 and is expected to be completed by the year 2023. In collaboration with Peab, a report has been carried out on the Expansion Obbola project to find out how they work to minimize material waste. The report will also look into the current way of dealing with material waste and if the opportunity exists to reduce the amount of material waste even more. The purpose of the report is to get a clearer picture of the material waste on the project Expansion Obbola, to further enable and expand Peab's work with material waste in an efficient, economical and environmentally friendly way. The report also aims to contribute to Peab's future work with material waste in a positive way. During the production of a new building, it is estimated that 30-40% of total cost consists of material costs, which means that if the amount of material waste can be limited, it can contribute to a more sustainable, economical and environmentally friendly way of building. This report resulted in that the situation in project Expansion Obbola is consisting of some difficulties and that it significantly complicates the possibility of reducing the material waste. Pressured time schedule, lack of space and limited guidelines on how to handle material waste are the main difficulties that the project poses but after the completion of this report, it is still considered that there are plenty of development areas for the project regarding material waste. Some of the presented proposals on how to work to reduce the amount of material waste are: Changing the day and time for revision of drawings, increase the cooperation between supervisors, change the wood for casting to a lower quality to spare the environment and expand the collaboration with the designers. The Expansion Obbola project is therefore considered, despite difficult conditions, to have good opportunities to improve its work with material waste and potentially be able to reduce the amount of material that is thrown away unnecessarily.

This thesis follows up the creation of business plan for establishment of new company called EasyWash. The company focuses on functioning of self-service laundry in Brno. The first part describes the theoretical background and methods, that are needed to perform all analyzes and proposals. In the analytical part I dealt with the creation of its own business model of the company. Part of the proposal of a business plan is the marketing, organization structure, schedule and financial planning. A certain part was devoted to the evaluation of risk factors.

The Swedish residential sector consumes almost 39 % of Sweden’s final energy consumption. The European Union framework ”Clean Energy for all Europeans package” strives to promote a 32,5 % reduction as a result of energy efficiency measures. The Swedish legislation BBR regulates rules regarding new buildings, extensions and reconstruction of existing buildings. Excerpt 9 regards how energy is being used and determines the demands e.g. for a buildings primary energy use to be classified as a near zero energy building (NZEB). The energy use of a building, located in Västerås, Sweden, is being decided. Various energy efficiency packages are applied to a model in the simulation software IDA ICE. The results are compared with each other deciding the potential benefits of the energy efficiency measures. A substantial decrease of the energy consumption is detected, especially for the energy efficiency packages containing a geothermal heat pump (66 – 78 %). A life cycle cost analysis shows that the package containing a ventilation heat recovery system (FTX) combined with a geothermal heat pump is the optimal solution through an economical point a view. The solution yields a profit after 14 years. The analysis shows that all geothermal solutions, except a system consisting of a geothermal heat pump, FTX, energy efficient windows, rooftop insulation and a photovoltaic system, yields a profit during a 30-year investment period. None of the packages containing a district heat exchanger yield a profit. The simulation results show that by implementing any of the geothermal heat pump packages, the demands for classifying the building according to an NZE building are fulfilled. Regarding the district heating packages, only the package containing all the energy efficiency measures (energy efficient windows, rooftop insulation and PV) meets the demands to be classified as an NZE building. Regarding the environmental impact due to implementing the energy efficiency measures, the results show a reduced impact from applying the geothermal heat pump packages is equivalent to the energy consumption reductions. The results show that by implementing a district heating system, more than one additional energy efficiency measure must be applied to avoid an increased environmental impact. This thesis shows that implementing energy efficiency measures can decrease energy consumption and yield an economical profit to the existing building stock.

The intent of this report is to distinguish the significance of interiors to obtain social sustainability in office environments as well as identifying selected environmental rating systems’ weaknesses and strengths concerning the inclusion of social criteria. To conduct the study an extensive literature study and several interviews have taken place. The study has resulted in 45 different criteria, which all are significant to obtain in a social sustainable office environment. To make the results easier to understand and interpret they are presented graphically with a custom designed tool, titled Duis Socialis. Using this tool, the criteria for social sustainability are presented along with the results from the review of the environmental rating systems. The results of this study shows that the environmental rating systems have a predominance towards the technical criteria in comparison with the criteria concerning sociology, culture and equality. This trend is most likely a consequence of the technical criteria being easier to quantify as well as containing distinguishable exposure-response relationships. The one criterion that could be identified in all of the environmental rating systems was Toxic-free materials. This is most likely because it is easy to quantify and is an important criterion seen from an environmental point of view. Six criteria were not identified in any of the systems: Power structures, Gender neutrality, Open spaces, Orderliness, Physically attractive interiors and Viable technology. None of the reviewed environmental rating systems do a clear attempt to include social sustainability, with the exception of WELL Building Standard. WELL Building Standard: New and Existing Interiors and WELL Building Standard: New and Existing Buildings were the environmental rating systems that fulfilled the most criteria. This may be because WELL Building Standard focusses on health and well-being instead of being a pure environmental rating system. Also, WELL Building Standard has been used to help identify the social criteria used in this study. The system that fulfilled least criteria was BASTA, it only fulfilled Toxic-free materials. This is because BASTA has a clearly stated focus on toxic-free materials and nothing else. The results of this study aim to increase the awareness of social sustainability and are by the authors of this report seen as a first step in the process. In the future the authors believe in the introduction of sustainability rating systems and sustainability certifications in which the economic, ecologic and social dimensions of sustainable development are included.

The global use of resources such as materials, energy, and water has surpassed sustainable levels by many accounts.  The research presented here was explicitly normative in its aim to improve the understanding of, and make sustainable change toward highly systemic issues of resource management.  The core methods chosen to work toward this aim were bottom up action research procedures (including stakeholder engagement processes) and industrial ecology analysis tools.  These methods were employed and tested in pragmatic combination through two of the author’s case study projects. The first case study, performed between 2009 and 2012, employed a multi-stakeholder process aimed at improving the cycling of construction and demolition waste in the Stockholm region.  The second case study produced a strategic tool (Looplocal) built for facilitating more efficient regional industrial resource networks. While the highly participative aim of the cases required a larger contribution of resources than that of more closed studies, it is arguable that the efficacy of approaching the project aims is improved through their employment. / <p>QC 20130522</p>

”Det kommunala planmonopolet” gör att kommunerna är viktiga aktörer i utmaningen att minska energianvändning och klimatpåverkan inom bebyggelse- och transportsektorerna, vilka står för en övervägande del av landets totala energianvändning. Den största potentialen i kommunernas planering och reglering av ny bebyggelse ligger i möjligheten att påverka bebyggelsens lokalisering och täthet, vilket har betydelse för resandets omfattning och val av transportsätt. Plan- och bygglagen (PBL) ger kommunerna vissa möjligheter att påverka energianvändningen och energitillförseln för ny bebyggelse, men de är tämligen begränsade. Variabler som mikroklimat och stadstyper med låg omslutningskvot påverkar bebyggelsens energianvändning i ett byggnadsfysiskt perspektiv, men ur ett administrativt perspektiv spelar detta ingen roll sedan energikraven i Boverkets byggregler sedan några år tillbaka ställer krav på hela byggnadens energiprestanda och inte på enskilda byggnadsdelar. Om byggreglernas krav istället skulle gälla byggnadens energianvändning i ett livscykelperspektiv skulle detta ge en mer rättvis bild samtidigt som planeringsfrågor som placering av bebyggelse och samt stadstyper skulle påverka energianvändningen. Vidare efterfrågas riktlinjer för hur användningen av elektricitet i bebyggelsesektorn ska miljöbedömas samt en statlig samsyn om elens roll ibland annat uppvärmnings- och transportsektorerna. Den stora effektiviseringspotentialen i bebyggelsesektorn finns dock i den befintliga bebyggelsen, vilket inte kan styras med vare sig markanvändningsreglering enligt PBL-planeringen eller Boverkets byggregler – det är fastighetsägarnas ansvar. Men planering kan omfatta så mycket mer än bara reglering. PBL:s organisation och krav på samrådsprocesser gör den kommunala planeringen till en viktig utvecklingsarena där såväl fastighetsägare som andra aktörer kan bjudas in att delta. Istället för ett traditionellt tvingande uppifrånperspektiv skulle den kommunala planeringen i högre grad kunna inta ett underifrånperspektiv och arbeta mer positivt och visa på möjligheterna att minska energianvändningen och få en mer hållbar energitillförsel, frågor som är bra både ur ett miljö- som ekonomiskt perspektiv. Planeringen skulle vidare behöva bli mer strategisk och genomförandeinriktad. I forsknings- och utvecklingsprogrammet Uthållig kommun fysisk planering har nya planeringsmetoder och -verktyg introducerats i fem kommuner, med syfte att integrera energi- och hållbarhetsaspekterna i den kommunala fysiska planeringen. En studie av den introducerade arbetsmetodiken visar att det går bra att kombinera rationella och kommunikativa planeringsmetoder och -verktyg. Det breda och inkluderande tillvägagångssättet har lett till att de deltagande har ökat sin kunskap om och sett större samband mellan planering, energi, bebyggelse och transporter, men även ökad förståelse för andra aktörers synsätt och kompetenser. Studien visar att såväl rationellt tänkande och expertkunskap som lokala, vardagliga erfarenheter och kunskaper är viktiga i planeringsprocessen. Det behövs kunskap om såväl processledning som sakkunskaper om exempelvis energi och miljöpåverkan. / Uthållig kommun

We often speak of our society as a consumption society, a label that emerged after World War II. But the consumption society dates back longer than that, and can be deduced as far back as the colonialist era and the rise of luxury goods. One could say that the consumption society is the cultural answer to the transfer of the economy into capitalism as well as a consequence of industrial mass production. Swedes’ consumption habits negatively affect the environment, being part of the wealthiest 20% of the world’s population that stands for more than three-quarters of total private consumption. More and more people consciously change their lifestyle into consuming less. This aversion from the capitalistic consumer society has been around for quite some time but continues to grow stronger. But how does these voluntary non-consumers experience the city that they live in? With major cities today being so focused around an ever-increasing consumption, this study aims to find out how Swedish non-consumers experience the city of Stockholm by the use of qualitative interviews. The empirical result shows that the interviewed non-consumers primarily choose their lifestyle due to environmental concerns, and that they feel that Stockholm is too centered on consumption, not having enough mixed areas, and that they are missing greenery and cultural activities in the city. Non-consumers seem to influence friends and family to adopt a more sustainable consumption habit, something that could be useful for the further development of a more environmentally friendly and sustainable consumption behavior in Sweden. / Vi talar ofta om vårt samhälle som ett konsumtionssamhälle, ett uttryck som dök upp efter andra världskrigets slut. Men konsumtionssamhället är äldre än så och kan härledas till kolonialismen och ökningen av lyxvaror. Man kan säga att dagens konsumtionssamhälle är ett kulturellt svar på omställningen av ekonomin till kapitalism, liksom en konsekvens av den industriella massproduktionen. Svenskar är en del av världspopulationens rikaste 20 %, som står för mer än tre fjärdedelar av total privat konsumtion, vilket har en negativ miljöpåverkan. Fler och fler människor förändrar medvetet sin livsstil till att konsumera mindre. Det här avståndstagandet från det kapitalistiska konsumtionssamhället har funnits länge, men fortsätter att växa sig starkare. Men hur upplever dessa frivilliga icke-konsumenter staden de bor i? Med större städers fokus idag kring en evigt växande konsumtion, syftar denna studie till att undersöka hur svenska icke-konsumenter upplever Stockholm, med hjälp av kvalitativa intervjuer. Det empiriska resultatet visar att de intervjuade icke-konsumenterna framförallt valt sin livsstil på grund av miljömedvetenhet, och att de upplever att Stockholm är för centrerat kring konsumtion och inte har tillräckligt med blandområden. De saknar även grönska och kulturella aktiviteter i staden. Icke-konsumenter verkar influera vänner och familj till att välja ett mer hållbart konsumtionsmönster, något som kan vara användbart för en fortsatt utveckling av ett mer miljövänlig och hållbart konsumtionsbeteende i Sverige.