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1226 Uppsatser om Heat loss - Sida 49 av 82

Kylfläns till förbränningsmotor hos radiostyrda tävlingsbilar

Inom Radiostyrd Bilsport tävlas det med ett antal olika klasser som drivs av 2-taktsförbränningsmotorer. Dessa blir mycket varma och måste kylas av. Det sker med hjälp av enkylfläns som är monterad ovanpå förbränningsrummet, och som kyls av fartvinden.HP Hobbyprodukter har frågat oss om vi kan hjälpa dem att ta fram en egen kylfläns åt dem.Eftersom det ofta förekommer ovarsam behandling i tävlingssammanhang, är det ett krav attkylflänsens ska tåla detta. Den måste även avleda värme från förbränningsrummet, motorblocketoch övriga motorkomponenter effektivt. Ett önskemål är att kylflänsen ska ha ett unikt utseende,så att den är lätt att känna igen ute på banan.Arbetet har inriktat sig på prototypnivå.

Ensamhetsupplevelsen hos äldre personer - en begreppsanalys

Background: Loneliness is an ordinary but complex concept which exist of several dimensions. Loneliness can mean and create suffering for the individual but there is sometimes a need to be alone and some individuals who live alone can experience a communion with the existence itself.Aim: To clarify the concept loneliness and its complexity with focus on the experience of loneliness in elderly individuals.Method: Walker and Avants (2005) model for concept analysisResults: The defining attributes the analysis resulted in that the experience of loneliness in elderly individual's is: a subjective and unique experience; positive or negative and ranges in intensity; strongly connected to communion and social relationships with other individuals; connected to loss and miss of one or several elements as meaningful interactions, communion, physical abilities, work, respect, health and quality of life. The attributes were also closely connected to their antecedents and consequences. To clarify the concept further was a model case, a borderline case and a contrary case created. The empirical referents are presented in the discussion.Conclusion: Through clarifying the core of the concept with focus on elderly individual's experience of loneliness is the hope that this concept analysis can support nursing staff to search for understanding for the elderly individual's experience of loneliness and pay attention to its complexity..

Micro plastics in the oceans and their effect on the marine fauna

Small pieces of plastic, termed ?micro plastic? in the oceans derive mainly from degradation of big plastics such as beach littering, but also from sources of direct emission from e.g. beauty scrubbers and synthetic sand-blasting. These micro plastics are ingested by marine animals ? mistaking them for plankton ? or via prey.

När de flygande tefaten landade i folkhemmet : en studie av ufo-mytens förändring i en svensk kontext

Narratives about UFO:s and extraterrestrials can be regarded as part of an everyday religiosity, yet the issue has been poorly studied outside an American context, within the discipline of Religious Studies. In this paper, I therefore seek knowledge about the further development of these narratives within the Swedish UFO-movement from the 1960?s until today. Influenced by social anthropologist Claude Lévi-Strauss´ discussion about mythems as the smallest components of a myth, I argue that the stories which emerge within the Swedish context differ from the American ones. This difference consists of both loss of certain mythemes and the addition of others to this mythic complex.

Dämplindningens inverkan på spänningens kurvform i en vattenkraftsgenerator

Harmonics are a well-known problem that has to be dealt with in the design of thegenerator. Internationally accepted standards limits the amount of harmonics allowedin the no-load voltage. These limits can be difficult to fulfill with integral slot winding,where the number of slots per pole and phase is an integer. The presence of thedamper winding often makes the problem with harmonics even worse and harmonicswith frequencies of order 6q±1 arise with significant amplitude. How the damperwinding is designed affect the content of harmonics in the no-load voltage and the aimwith these ? has been to investigate in which extent design of the damper windingaffects the contents of harmonics.Simulations with the 2-D finite element method have showed that if the damper barsis centered in the pole shoe, the amplitude of the harmonics of order 6q±1dependsboth on the ratio between the stator slot pitch and damper bars slot pitch and if thedamper bars are connected between the poles or not.If the damper bars is displaced with ¼ stator slot pitch alternately, the amplitude ofthe harmonics of order 6q±1 is reduced and the influence of the ratio between thestator slot pitch and the damper bars slot pitch will vanish.

Bygga hus i traditionell härjedalsstil

The purpose of this degree-project was to investigate the possibilities for primary air preheating into the two smallest waste incineration boilers of Halmstad Energy and Environment. The investigation is a pre-study which has the primary goal to evaluate technical and financial offers from companies that manufacture primary air preheater, and investigate if it is technically and financially profitable to do a purchase on primary air preheaters in the future.In the pre-study it is proposed that it is most efficient to have individual primary air preheater, one for each incineration boiler and the primary air are also proposed to be preheated by hot water in the pre-study. Further in the pre-study it is proposed that the heat-exchanger should have plain tubes instead of finned tubes, to avoid getting dirty fast. The space in the boiler-room is limited, and therefore the major problem was to fit in the primary air preheaters into the boiler-room. By comparing the different offers from the companies, the result in the pre-study shows that the offer from the company C.A.

Energideklarationer - Marknad och Kundkytta

The purpose of this degree-project was to investigate the possibilities for primary air preheating into the two smallest waste incineration boilers of Halmstad Energy and Environment. The investigation is a pre-study which has the primary goal to evaluate technical and financial offers from companies that manufacture primary air preheater, and investigate if it is technically and financially profitable to do a purchase on primary air preheaters in the future.In the pre-study it is proposed that it is most efficient to have individual primary air preheater, one for each incineration boiler and the primary air are also proposed to be preheated by hot water in the pre-study. Further in the pre-study it is proposed that the heat-exchanger should have plain tubes instead of finned tubes, to avoid getting dirty fast. The space in the boiler-room is limited, and therefore the major problem was to fit in the primary air preheaters into the boiler-room. By comparing the different offers from the companies, the result in the pre-study shows that the offer from the company C.A.

Informationsutbyte från BIM-modeller : Från BIM-modell till format hanterbara av förvaltning- och GIS-system

BIM has been a trend in recent years when it comes to design and construction ofnew buildings. However, there has been less talk about what happens to BIM modelsafter the construction phase.This issue has been raised at the Forsmark construction documentation department.This thesis aims to look at how the information in a BIM model can be transferred tofacility management and GIS systems and thus add value, even after the constructionphase.Questions raises how such an exchange might look like and whether it is reliable.How should a claim be brought to planners for such an exchange to work.This thesis tested some of the most common methods for this kind of exchange ofinformation from BIM models to facility management and GIS. It was formats like IFC,Fi2xml and a database connectivity that was analyzed by a computer simulation of amodel provided by Forsmark. The model consisted of an existing office building atForsmark, modeled in Autodesk Revit.The results indicate that the formats tested require a precise plotting of the models.The loss of information that came to light in the simulation could be attributed tofailure modeling in Revit. Even such things as naming of areas must be consistent.

Folkomröstningen som korrektiv : - en jämförande studie av riksdagens val av beslutsmetod i frågorna om EMU och EU-konstitutionen

Sweden has been a member of the European Union since 1995 and the power of the organisation to make decisions has increased over the years in a rate which hasn?t been followed by an equally increase in democratization. This is partly due to the lack of participation in the decision making process and at the national level the citizens don?t possess enough channels to compensate the loss of influence. To solve this democratic dilemma, more and more countries are turning to the referendum.

Städer och planetära gränser : En utvärdering av Stockholms ochNorra Djurgårdsstadens påverkan påde planetära processerna

The concept of planetary boundaries was introduced in the year 2009 by a group ofresearchers led by Johan Rockström and Will Steffen. The group presented a draft of thelimits of the planet regarding nine Earth System processes concerning climate change, oceanacidification, stratospheric ozone depletion, atmospheric aerosol loading, interference with Pand N cycles, global freshwater use, land-system change, rate of biodiversity loss andchemical pollution. The starting point for the study presented in this report was that asustainable development only can be achieved if humankind stays within the boundaries. It istherefore, based on the ongoing urbanization, relevant to evaluate how cities affect the EarthSystem processes. The aim of the study was to investigate if Stockholm Royal Seaport (NorraDjurgårdsstaden), a district in the northeast of Stockholm with a clear environmental profile,affects the Earth System processes less than Stockholm in general does.

Sjuksköterskans dokumentation av smärtskattning och smärtlindring avseende bröstsmärtor i den prehospitala sjukvården

The object with the study of this literature was to describe differente programs of care and patients and relatives experience and opinion about the caring for patients with Anorexia Nervosa. The method the author used was a descriptive literature study based on imperial studies. The studies were based on 15 scientific articles within the chosen field. The results shows that these patients hade special needs to be seen and heard as individuals, involved in their own treatment, and have good contact with the caring staff. The study also shows which methods were mostly appreciated involving nurses, patients and relatives.

Vet alla vart vi är på väg? : -Studie av internkommunikation i en komplex organisation

Internal communication exists in all organizations and is ongoing. It is of great importanceto communicate effectively when deficiencies can have serious consequences. The tsunamithat swept over South East Asia's coast in 2004 is indicative of this. At that time the consequenceswere loss of efficiency and productivity of businesses, health care, police and themilitary. All because of the lack of information.Employees in an organization take many decisions that affect the entire organization.

Bakgrundskontroller i svenskt näringsliv - En studie av kontrollförfarandet vid rekrytering till ledningsgrupper

Changes in the labour market combined with an increased media coverage of managers, have resulted in the rise of a new human due diligence industry. The use of background checks has lately become increasingly popular on the Swedish market and many companies use it as an evaluation tool when recruiting. This study investigates differences in the background screening procedure for recruitment to executive management positions and lower level positions. It also aims to answer why background checks are conducted, using a cultural and a functional perspective. The report takes an abductive approach and data has primarily been gathered through a survey directed to large Swedish companies.

Utredning av primärluftförvärmning till två avfallseldade pannor

The purpose of this degree-project was to investigate the possibilities for primary air preheating into the two smallest waste incineration boilers of Halmstad Energy and Environment. The investigation is a pre-study which has the primary goal to evaluate technical and financial offers from companies that manufacture primary air preheater, and investigate if it is technically and financially profitable to do a purchase on primary air preheaters in the future.In the pre-study it is proposed that it is most efficient to have individual primary air preheater, one for each incineration boiler and the primary air are also proposed to be preheated by hot water in the pre-study. Further in the pre-study it is proposed that the heat-exchanger should have plain tubes instead of finned tubes, to avoid getting dirty fast. The space in the boiler-room is limited, and therefore the major problem was to fit in the primary air preheaters into the boiler-room. By comparing the different offers from the companies, the result in the pre-study shows that the offer from the company C.A.

Salutogent förhållningssätt och ett värdigt liv inom äldreomsorgen

Our study aims to examine whether managers in elderly care are working from a salutogenic approach to create a dignified life for the residents. By this we are trying to find out how you look at life in dignity and what meaning it has, what similarities and what differences there are. We also want to explore what they want to achieve with their work and what they do to enable it. The questions we asked ourselves what the salutogenic approach is for managers working in nursing homes. How do they look at a decent life and we ask ourselves the question of the salutogenic approach is just a "buzzword" in a working man always had or there are real differences? The method we have chosen to use is a web-based questionnaire that we sent to our sample.

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