Sök:

Sökresultat:

281 Uppsatser om Charge Air Cooler - Sida 3 av 19

Förbättrad planeringspolicy mot lågfrekventa beläggningsprocesser : - I en av Sandviks produktionsenheter

Att ha en god planeringspolicy för samtliga produktionsavsnitt i en produktionsanläggning är en viktig del i en organisation. Inom en industri med många produktvariationer och artiklar är det lämpligt att anpassa flera planeringsmetoder för effektiv planering mot samtliga operationer. I en av Sandviks produktionsenheter för skärtillverkning i Gimo var fokus riktat till att förbättra planeringspolicyn mot lågfrekventa beläggningsprocesser. I denna studie presenterar och optimeras planeringen mot två beläggningstyper vardera inom Physical Vapor Deposition (PVD) och Chemical Vapor Deposition (CVD). I grund för detta examensarbete finns en teoretisk studie, simulering samt fallstudier på Sandvik Coromant AB.

Jämförelse av solhybrider

Research in solar energy is taking big steps in both solar heating and solar electricity. It´s not only the technologies alone, but also the combination of both solar electricity and solar heating which is what is called a solar hybrid. The idea of a solar hybrid is that a solar cells efficiency decrease with increased temperature and can with help from a solar collector be cooled and the heat can be utilized. This thesis report compares heat production and electricity production with respect of, in first hand, a solar hybrids geometry in the cooler. The theory chapter describes solar heating and how different solar cell technologies work and their environmental impact at the production and how compatible these technologies are for the solar hybrid.

Konceptstudie av Waste Heat Recovery System på Tunga Fordon

In today?s fast growing and closely connected society, a reliable and energy efficient transportation system is more than ever desirable. Nowadays the significant part of the transportation sector?s energy demand is supplied by fossil fuels.Improving energy efficiency in combustion engines will result in reduction of fuel consumption and CO2 emissions. A modern internal combustion engine has an efficiency of 30-45 %, where the most energy loss occurs as result of heat losses in the exhaust and cooling systems.

Skattetillägget och rättssäkerheten : Har Europadomstolens dom i målet Janosevic mot Sverige 2002 lett till förbättrad rättssäkerhet på skatteområdet?

In 1972 the regulations on tax surcharge were introduced. In the new system the sur-charge are imposed by the Tax Authority (skatteverket) and not the Court. Since 1995 the European Convention on Human Rights constitute law in Sweden, which means that Sweden is forced to guarantee its citizens the human rights in the Convention. Article 6 in the Convention states that everyone, in the determination of his civil rights and obligations or of any criminal charge against him, is entitled to a fair hea-ring within reasonable time. The Article also expresses the right for anyone charged with a criminal offence to be presumed innocent until proved guilty according to law (the presumtion of innocence).

Spridning av släckvattenpartiklar : En studie på spridning av partiklar genererade från brand

During a fire large amounts of particles and unhealthy agents occur.  Polyaromatic hydrocarbons (PAH) and toxic metals are examples among many others. These agents have a capacity to bond to particles and when the fire is extinguished, the particles can be transferred with the extinguish water into the soil and to the groundwater.Recent studies in particles have been conducted. A study by Ulrika Iverfelt (2014) reviled that the particles from a fire contained large amounts of both PAH and metals, which is consistent with earlier analyses. Her column experiments with particles in the size ? 11 microns and ?100 microns in silica sand, reviled that the larger particles was immobilized because the transportation was influenced by sieving or physiochemical particle and surface interactions.The transport of the particles in soil and groundwater is regulated by two main mechanisms: physiochemical surface interactions and straining.

Direct-EGR tillämpat på HCCI

The Homogeneous Charge Compression Ignition (HCCI) engine is promising in terms of lowNOx, low particulates and high efficiency. Due to its homogeneous charge, where thecombustion starts almost simultaneously from a number of points in the combustion chamber,only lean mixtures are possible to burn because of the resulting rapid combustion, which is muchfaster than the combustion in an SI-engine or a diesel engine. When richer mixtures are used thecombustion will start earlier and also be more violent.To phase the combustion later and lower the combustion speed, external cooled EGR can beused. The EGR-system used in this thesis uses a divided exhaust channel where one channel andits corresponding valve are used only for transporting EGR back to the intake system.Consequently the EGR-valve is connected to the intake pressure. This system is called Direct-EGR (D-EGR).Engine tests verified that the CA50 indeed is phased later when cooled EGR is used.

Siffror istället för bokstäver : Övergången från SAB till DDK i Sigtuna kommuns folkbibliotek

The purpose of this thesis is to examine the transition from SAB to DDC in the public libraries of Sigtuna.More specifically, it aims at investigating why the decision was made to adopt the DDC and how the system has been implemented. Particular attention is drawn to the difficulties and problems that have arisen while organising the libraries open shelves with DDC and to the ways in which the difficulties have been handled. These questions are examined through a pragmatic perspective on Knowledge Organization that focuses on the contexts and domains in which the classification system is used. The empirical material is drawn from qualitative interviews with the former director of Sigtuna public libraries and with the in-charge of the catalogue department.                                                                   .

Alternativ för värme- och kylaförsörjning i planerade kontorsbyggnader på Arlanda

This thesis consider alternatives for heating and cooling planned office buildings at Arlanda airport. The thesis is divided into three parts where the third part is a shorter synthesis of the two first. In the first part the energy demands of the buildings are modelled in a computer program. Two different building models are created, one more conventional and one with good energy properties. The results shows that with proper construction and ventilation systems etc.

Minskad trädtillväxt under Lilla sitiden? : En dendroklimatologisk jämförelse mellan nutid och 1600-talet invid trädgränsen i norra Skandinavien

During the period called Little Ice Age (1400 ~ 1900) the climate of northern Europe was in an annual year-basis overall colder than it was before and after that period. The numbers of short, cold and rainy summers and long, bitter-cold winters where often repetitive under the approximately 500-years the period lasted. In Scandinavia, the coldest time during this period is estimated to have started around the end of the 16th century and lasted to the beginning of the 18th century. Trees growing at the tree-line are limited by temperature for their annual growth and hence showing differences of growth during changes in the climate,  a method called dendroclimatology. The variations of growth can be read in the tree-rings either by analyze the width of the ring or by look into the density of the wood and is used to reconstruct past climates.

Koranundervisning i en svensk moské : Turkisk ideologi som religionspedagogik

The present thesis deals with Qur'anic Studies among Turkish immigrants inSweden. The aim is to investigate the significance of Qur'anic Studies forMuslims in a country like Sweden. This thesis also highlights the role ofthe Turkish state in encouraging and funding Qur'anic Studies in Sweden.I have carried out a case study on a Mosque outside Stockholm, where anImam, sent by the Turkish government, is in charge of the Qur'anic Studies.It is found that Qur'anic Studies is important for Muslims in Sweden in theirefforts to preserve their religious identity. The results also indicate thatQur'anic Studies also has an ideological dimension insofar as it is a meansfor Islamic governments, groups and individuals to further the interests of political Islam..

Från översättning till undersökning : om att överbrygga klyftan mellan innehåll och form i utställningsprocessen

The making of a cultural historical exhibition usually involves the collaboration of two categories of professionals: the curator, in charge of the exhibition content, and the designer. From these positions, representing content and form, the team is in charge of cooperating towards a shared goal ? the exhibition ? which is the spatial expression of ideas.This MA thesis is based on my work experience as a designer of cultural historical exhibitions. By means of situations where my perspective collided with that of the museum curators?, I examine our different concepts on a number of issues: the meaning of an exhibition; the process; and the perception of what our respective roles are.

Samarbete mellan lantbruksföretag : möjligheter och problem

Nowadays, cooperation is necessary and this study tries to illuminate the possibilities and problems about cooperation in fiction between 7 small/midsize farms in Skåne. Conventional Farming is done with grain and sugarbeets as specialization. Calculation of machine costs have been done and compared in the study, both for the farms in thorough and the fictitious operation companies. Business ratios as depreciation/ha, interest/ha and maintenance/ha have been calculated. In this essay we present a proposal about how a practical implementation can be done. In the proposal there is an example how the distribution of work can be done.

Värdering av onoterade bolag : En studie om värderingsprocessen vid bolags köp

Business valuation is something that is carried out on a daily basis and relevant to both small and large businesses. Valuations are often long and complex processes that may be difficult to understand, even for those who have received an education in the field. In this thesis, we try to create a better understanding of how this process works.   Since we are aware of many aspects of the theory behind business valuation, but very little insight into the practical activities, we have chosen a deductive approach, i.e. to go from theory to empirical data.   The conclusion is that the methods presented in the theory is largely used in practice, and that the process of valuation mighty seldom differ between valuations. For the seller to be able to charge a higher value for their companies, it is important to have knowledge of, and review the value-creating factors in the company.

Fanan, förrädarna och friheten : Musiktexter med ideologiska teman från Tredje Riket till Vit Makt-rörelsen ? en komparativ textanalys

The making of a cultural historical exhibition usually involves the collaboration of two categories of professionals: the curator, in charge of the exhibition content, and the designer. From these positions, representing content and form, the team is in charge of cooperating towards a shared goal ? the exhibition ? which is the spatial expression of ideas.This MA thesis is based on my work experience as a designer of cultural historical exhibitions. By means of situations where my perspective collided with that of the museum curators?, I examine our different concepts on a number of issues: the meaning of an exhibition; the process; and the perception of what our respective roles are.

Modellering av dagvettenavrinning - Mousetrap

This paper deals with the use of Internet at Swedish public libraries. The author asks whether public libraries should or should not limit access to information available on the Internet. Starting from the American discussion, concerning Internet at public libraries, the author shows the Swedish attitudes. The paper demonstrates that many Swedish public libraries have adopted rules forbidding retrieval of certain kinds of information, such as hard-core pornography and racist propaganda. The persons in charge of such actions claim that public libraries should provide high-quality educational literature and should not spread mass-produced, provocative information.

<- Föregående sida 3 Nästa sida ->