E-Series 450 is a chainsaw designed by Husqvarna AB to the semi-professional user. Husqvarna is a world leader when it comes to chainsaws, trimmers, lawn mowers and garden tractors. The problem in hand can be addressed by the question. ?How easy can we start a chainsaw? The purposehas been to provide a solution to the question above and give Husqvarna a good base of which they can continue towards a finished product.

Lufttätheten hos en byggnad påverkar dess energiprestanda, luftkvalitet inomhus, ljudisolering och riskerna för fuktskador. Lufttäthet definieras i Sverige oftast utifrån klimatskalet, i enlighet med tidigare byggnadsregler och den svenska definitionen för passivhus. Däremot finns det idag inga specificerade myndighetskrav på lufttäthet i Sverige. I examensarbetet undersöks lägenheterna i ett flerbostadshus i Malmö. Förutom lufttäthetsprovningar enligt SS-EN 13829 gjordes en mottrycksmätning för att bestämma läckaget mellan två lägenheter.

The scope of this investigation is to decide how and to what extent the energy consumption of apassive house is affected by the users? knowledge and habits. To achieve this a literary study hasbeen made and as a complement the planning of a passive house was completed.The result of a primary study of the rules and regulations that effect passive houses in Swedenshows that the user?s influence on passive houses is a completely unregulated area. Even thoughthere is no regulation, a need for some general knowledge of the passive house concept has beenexpressed.To further investigate how the users? knowledge and habits affect the energy consumption and ifthere is a difference between different households? energy consumption , three main factors havebeen identified.

A large proportion of the energy consumption is in the building industry and a large part goes to heating our homes and premises. In the developing countries' development now threatens the large consumption of energy in our earth's climate. It is in the West world that we must be good role models in terms of energy efficiency. One solution to reduce energy consumption for heating of buildings may be to continue to build low energy houses and passive houses, but it is also about rebuilding the buildings that currently have high energy consumption such as the old Million program Houses. These buildings will be standing many years and their energy consumption will not diminish over time by itself and energy prices will certainly not diminish in the future.

This report compares two different types of insulation with regards to fire and moisture. The materials were tested for the company Fiskarhedenvillan AB, for a wall and a roof construction that the company currently uses in the establishment of Sweden's first certified passive house for international standards.Their current material, Rockwool, is compared to a relatively new material on the Swedish market called SEALECTION Agribalance sold by the company ISO Green AB. The material is a type of polyurethane insulation. This insulation material would result in a more efficient execution of the construction as it provides waterproofing and is applied more easily than Rockwool. From a fire standpoint, literature studies and discussions with fire experts led to results.

ur society is today in a phase of development in environmental and sustainable thinking. Alarming reports show changes in climate caused by our load and exhaust of resources. The energy usage contributes to a big part of it, by its emission of carbon dioxide. The built environment uses around 40 % of the total energy consumption in Sweden and requests to strongly reduce it are presented from both EU and national level.This thesis brings up the subject of green building with a focus on how we can create more energy efficient buildings in projects of new construction. Since the construction industry today often fails to pass on the knowledge between different projects, as a return of experiences, the construction company Skanska suggested the topic for this thesis.

Dagens förskolor har en rad olika krav från brukare, beslutsfattare och samhälle. Hur kan man planera en byggnad som tillfredställer alla? I denna rapport försöker vi utifrån litteraturstudier, studiebesök, fallstudier och byggtekniska krav gestalta en förskola i den planerade stadsdelen Vega, Haninge kommun. Stadsdelen Vega är en del i en satsning från Haninge kommun som ämnar skapa en mer stadslik bebyggelse. Vega kommer att projekteras utifrån principerna för en trädgårdsstad med mycket grönska och stadslika kvarter.I vår rapport har vi utgått ifrån kraven för passivhus för att skapa en energieffektiv byggnad.

Along with rising energy prices and increasing awareness of environmental issues, the criteria for buildings energy performance have been sharpened through the years. Today, ?passive house? and ?low energy house? are commonly used phrases in the construction industry and is expected to become increasingly common in the future.For houses with well-insulated building envelope the importance of well constructed details increases when minimizing the heat losses. Examples of these details are floor-wall junction and window openings in the wall. In such connections thermal bridges occur, which means that heat more easily is transported out of the building, compared to the rest of the building envelope.This report deals with detail solutions around windows and a comparison between a traditional slab and a foundation from Koljern consisting of foam glass.

The viscosity of air buildings is a hot topic within the construction performers, which the industry feel they have too little knowledge about. This study is mainly aimed against air density in apartment buildings and airflow measurement. The study consists of a theoretical reference, educational visit, interviews and a survey conducted among construction workers at Magistratshagen in Linkoping.Earlier requirement in terms of air leakage through the climate screen was removed and today there are only energy requirement for a dwelling in Boverkets Building Regulations. The difference between a passive and a typical air tight construction is that the passive house have a maximum requirement of 0.3 l /s m2 of air leakage through the building climate screen. The requirement imposed on passive houses is to minimize the supply of power and energy for heating the building.Air tight constructions have heavy demands on the performance and accuracy of everyone involved with the project. The client must specify their requirements and also be prepared to pay for any additional costs. The architect and building planners have to design the building with regard to air tightness. Finally, the construction workers are required to do a careful work in order to get all the connections in the building air tight.The study suggests that an air tight building is a closed system where no forced ventilation exists. There are no reasons not to build too tight as long as there is a functioning ventilation. In this study the authors ask themselves how an air tight building changes over time. No theoretical information has been found on these changes, but the respondents assume that air density decreases with time. The deterioration is mainly assumed to be caused by construction materials changes over time. The study shows that construction workers knowledge of air tight construction is mixed, which they themselves admit in the survey..

Energy efficiency has become a very topical issue that has been discussed throughout the European Union for preventing negative environmental impacts that have been associated with the consumption of energy. In the residential sector have mainly municipalities set strict requirements for the reduction of energy consumption while the renewable energy has been asked. Different concepts of low-energy buildings have been developed to reduce the cost of operation and maintenance in existing buildings such as in new ones.This thesis has aimed to minimize the energy cost of a large building which has had low energy consumption features originally. Energy reviews has been initiated in order to be able for showing how the house electricity could be carried out even more efficiently.The work was initiated through a literature study to clearly increase the reliability on the energy subject. Different concepts of low-energy buildings have been treated in connection with its specifications, afterward those have been compared with the obtained results.

Syftet med undersökningen var att ur ett innovationsperspektiv studera de drivkrafter och barriärer som uppstår inom bygg- och fastighetssektorn när kraven på energieffektivisering i fastigheter ökar. Undersökningen grundar sig på bebyggelsesektorns betydande andel av Sveriges totala energianvändning. Arbetet omfattar sju kvalitativa intervjuer med aktörer inom bygg- och fastighetssektorn. I intervjuundersökningen studeras bygg- och fastighetssektorns agerande inför ökade krav på energieffektivitet i fastigheter, de aktörer och faktorer i planeringsprocessen som har möjlighet att påverka den framtida energieffektiviseringen och avslutningsvis, huruvida det kommande kravet på energideklarationer för byggnader uppfattas som drivkraft eller barriär. Analysens resultat tyder på att energieffektivisering idag drivs fram främst av ekonomiska skäl, men att energideklarationen kan bli ett viktigt incitament.

Allt sedan oljekriserna på 1970-talet har intresset för energieffektivt byggande växt i Sverige. Idag finns det politiskt fastlagda mål inom EU om att energieffektivisera och från och med 2021 ska alla nya hus som byggs inom EU vara Nära Noll Energi-hus (NNE-hus). Definitionen för vad som är ett NNE-hus får medlemsländerna göra själva. För att snart kunna bygga lågenergihus i stor skala behövs uppföljnings- och informationsinsatser från demonstrationsprojekt. Kvaliteten på energiberäkningar behöver också höjas nu när efterfrågan av energieffektiva byggnader är större som kräver uppföljningsunderlag från olika fastigheter.Syftet med denna studie är att bidra till kunskaperna om erfarenheter från demonstrationsprojekt inom lågenergibyggnader med fokus på flerbostadshus med solfångare.

Det här examensarbetet handlar om dagens och framtidens byggande av flerbostadshuskomplex. Syftet är att undersöka marknadens trender i Sverige, för att se vilken nisch byggföretagen bör välja vid byggande av nyproduktion för att bäst kunna locka till sig de åtråvärda kunderna på marknaden.Arbetet inleds med en grundlig genomgång av hur trender kommit till Sverige genom tiden från utlandet. Därefter följer en utvärdering av olika kommande trender som är aktuella i utlandet men ännu inte fått någon stor genomslagskraft i Sverige. De trender som utreds är Avskärmade stadsdelar, Höga hus, Trähus och Passivhus.Vidare gås passivhusen och därmed också miljötrenden igenom ännu grundligare och de olika aktörernas aktivitet inom området i dagsläget undersöks. Olika alternativ för att utveckla dagens miljökoncept föreslås också och även konkreta exempel nämns.Efter detta görs det en parallell med bilindustrin och deras miljöbilskoncept och hur den marknaden har utvecklat sig.

Passive houses are a relatively new concept in Sweden and by that it is meant a house without a traditional heating system. The most acknowledged passive house project is the terrace houses in Lindås, Gothenburg, which we have used as a reference. This project concerns a square apartment block. So far, no square apartment block has been built as a passive house in Sweden.The common opinion in the construction industry is that it is not economical to build extremely energy efficient houses. With Peab as commissioner our task was to investigate if that is true, if regarding the construction of a multi storey house as a passive houseMidroc, now owned by Peab, constructed in the block of Preussen in Jönköping during 2004-2005 four houses, with 132 apartments distributed on seven floors.

Hållbarhet har blivit ett ord i tiden och används idag flitigt inom de flesta arbetsområden, stora som små. Dock verkar hållarbetsarbetet vara mycket tomma ord och arbetet är inte lika omfattande som viljan att arbeta långsiktigt. Byggsektorn står för en stor del av energianvändningen i Sverige och där finns stora förbättringar att göra. På senare tid har ett intresse för miljöcertifiering av byggnader uppstått. Det finns vissa fördelar med att använda sig av dessa system vid byggprojekt, det finns även en del nackdelar.