Sök:

Sökresultat:

1042 Uppsatser om District heat - Sida 35 av 70

Undersökning av samband mellan MCV och geotekniska parametrar. Analys utifrån fält- och laboratorieförsök på finkornig jord

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Intern hantering som orsak till defekter: ett Sex sigma
projekt för analys och åtgärdsförslag på Sapa Heat Transfer AB

Detta examensarbete har utförts på Sapa Heat Transfer i Finspång och har tagit upp frågan med hur den interna hanteringen av produkterna kan orsaka defekter. I arbetet har en typ av defekt undersökts särskilt och denna defekt kan ses som ett exempel. Företaget tillverkar aluminiumband till värmeväxlare, främst till fordonsindustrin. Banden levereras på rullar med en diameter upp till 1700 mm, och en bredd mellan 12 mm och 1440 mm. Syftet med detta examensarbete är undersöka en defekt som är orsakad av den interna hanteringen, det vill säga det som sker mellan produktionsstegen.

Miljödiplomering: En jämförande implementeringsstudie av skolor i Norra Hisingens stadsdel

This thesis is a product of research about how implementation issues occur due to the relationbetween bureaucrats and politicians. Our study treats the democratic dilemma that occurs whenschools are to implement environmental certifications. Through a comparative study we comparetwo schools in Norra Hisingen, a district in Gothenburg municipal where one of the schools iscertificated and one is not. By using theories from top down and bottom up approaches toimplementation we develop key factors that will lead us to answer our research questions.Through text analysis of policy documents and through interviews with bureaucrats we analyzewhat may be the causes for only one of the two schools to be certificated though Gothenburgmunicipal wish all schools to be. Through our analytical tool we can establish that the policydocuments are well formed according to our top down-theory and that these documents does nothave a major impact on the fact that one school is certificated and one is not.

Cross-sectional study of bovine anaplamosis in South-western Uganda : the impact of wildlife-livestock interface

The tick-borne disease bovine anaplasmosis is primarily caused by Anaplasma marginale. A variety of wild animals act as reservoirs for A. marginale, but the understanding of their role in the epidemiology of A. marginale is yet poor. This cross-sectional study was conducted to establish if proximity of wildlife affect the prevalence of bovine anaplasmosis in cattle.

Distriktsköterskans erfarenheter av den palliativa vården i hemmet

Ett ökande antal palliativa patienter med cancerdiagnos väljer att vårdas hemma den sista tiden i livet. Den palliativa vården ställer speciella krav på distriktsköterskan som ska vara professionell i en annan persons hem. Syftet var att beskriva distriktsköterskans erfarenheter av den palliativa vården i hemmet. Litteraturstudie baserad på 11 kvalitativa artiklar. Distriktsköterskan anser att det viktigaste är att skapa trygghet och en god relation med patienten och dess familj för att den palliativa vården ska fungera. Distriktsköterskan känner att de fyller en stor funktion och det positiva med arbetet är att de är självständiga. För att bibehålla kompetensen behövs det utbildning inom den palliativa vården. Distriktsköterskans huvuduppgift med den palliativa vården är att se till att patienten får så god livskvalité som det är möjligt den sista tiden i livet. Vid vården i hemmet blir även familjen involverad.

Lärk eller Impregnerat ? en kvalitativt jämförande livscykelanalys av sibirisk lärk och svensk tryckimpregnerad furu

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Kvalitetskontroll av trafikmätningssystem ? En studie om noggrannheten hos induktiv slinga, slang, KomFram, video och radar i olika trafikmiljöer

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

En kommunikations hemlighet : En studie om externkommunikation inom en ideell organisation

My essey concern the non-profitable organization Ung företagsamhet and their extenal communication with collaborators. I have done three intervjues with three of Ung företagsamhets 24 district in Sweden, and these are Kalmar, Jönköping and Skåne. My qustions conserns their rethoric and strategic communications channales, and the focus lies in their external communications with collaborators. I have also made a secondary data analysis about their media coverage and seen how they consciously works with it.Ung Företagsamhet is a non-profit organization that need good partnerships in order to survive financially. My analysis shows that the three different regions works variously with their external communication.

Framtagning av ett nytt recept för clear-coat batter av pommes frites : En teknisk och sensorisk utvärdering

The requirements of good quality and appetizing fast food increases continuously as a consequence of a community where food is always available. The crispiness of French fries is an issue that must be considered in this context, since it tends to decrease and give the fries a soft surface not appreciated by the consumer. To prolong the crispiness, the fries can be coated by a batter, a mix of starches. The batters used often consists of modified starches, e.g. cross-linked, acetylated and dextrinizated to increase and prolong crispiness, flour to stabilize the batter and sodium bicarbonate to make the batter ?rise?.The cross-linked starch keeps the granules in a swelled state and prevents them from breaking when exposed to heat or processing: therefore, it delays the gelatinization and decreases the stickiness of the batter.

DATORSTÖD FÖR ARBETE - KONSEKVENSER FÖR VAL AV AFFÄRSSYSTEM En studie av en service- och supportavdelning

This report is focusing on problems with introducing standard enterprise resource planning systems (ERP) in businesses. A study has been carried out on a service and support department at a Swedish heat metering company, SVM North Node. The study aims to help the company become a better customer in choice and customization of a new ERP system. We make a description of the department studied and the work carried out there, on the basis of learning, knowledge and cooperation. As a final point we present some ideas on how computer systems could support their work, hoping that this will result in them making adequate demands on a new ERP system.

Sömn hos små barn och deras föräldrar

Background: How small children sleep influence the whole family. Sleeping problems, could influence children physical, mental, emotionally, cognitive and socially. When parents get waked by the children, who wake by themselves in the middle of the night, the parents do not always now what to do. Aim: The aim of this study was how children sleep and how it influence their parents sleep habit. The question formulation was threefold: Firstly.

Design and evaluation of an AGV-system for Tetra Pack in Lund using simulation

This examination work is the final work in our education to become a Bachelor of Science inMechanical Engineering by the University of Lund.The main purpose with this work has been to develop a new effective material handling system for TPPM AB in Lund since the existing system starts to become out of date. The future system that is going to be installed shall have the capacity to support all machines with unit-, semi- and finished goods during full production. The work has also included studying the possibilities to change the material flow in a positive way between the storage and the production when one is using existing buildings.During our work we have been used a simulation program called AutoMod, performing company visits, interviews and reviewed internal and external information to create a picture of what the best conclusion can be. During the work we have contacted five suppliers to receive system solutions and quotatioris. The suppliers, which have been contacted, are Swisslog, Moving, Rocia, Christensen & Hansen and ABB.

Lagring av kyla i bergrum : Undersökning av ett nedlagt oljebergrum

This thesis considers the use of an oldrock cavern as thermal energy storage.With a large system of differentchillers a model was created to find anappropriate future system. There aremainly two trajectories to take. Eitheran installation of chillers needs to bemade or the rock cavern can be used tomeet the future demand of districtcooling in Solna, Sweden. Additionallythis thesis investigates the possibleuse of different techniques to utilizethe phase change energy of water.Simulation shows that it?s possible toutilize the phase-change energy of afluid; however it?s not economicallyfeasible due to the thermodynamiceffects on the Carnot cycle.

Varde ljus!... tyvärr stod det ett hus i vägen. : En studie om dagsljus och vilken plats det har i Stockholms planering

The importance of daylight for humans has been known for a rather long time. Applying this knowledge in the science of urban planning is not very common, at least not in Stockholm, Sweden. Living in a country far from the equator with great differences between daylight and darkness during the year, daylight gets even more important for our wellbeing. This study aims to highlight the subject of daylight planning and contribute to the discussion about how to include daylight in the process of urban planning. By critically observing a new built district in Stockholm and applying guidelines of how to use daylight planning, this paper shows how important it is to include daylight planning early in the process.

GIS-program för ruttplanering. En studie av nyttjandet av GIS-program för ruttplanering inom tekniska förvaltningar bland kommunder i västra Sverige

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

<- Föregående sida 35 Nästa sida ->