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345 Uppsatser om Thermal comfort - Sida 14 av 23

CFD-simulering av kallras från fönster : Konvektorers och nischdjupets inverkan på lufthastigheter i rummet

During cold winter days it is likely that people in buildings with older windows or high glass facades experience thermal discomfort due to cold air down draughts. Earlier work has been aimed at finding analytical methods to predict the speed of the airflow in a room and in practice heating appliances are often placed beneath the windows to reduce the draught along the floor. In a study from 2012 Mohammad Parchami developed a method for estimating the required heating power to counteract the downdraught with such heating appliances. In this study, Computational Fluid Dynamics (CFD) was used to evaluate the usefulness of Parchami?s method and also to examine the potential of adapting the depth of the inward window sill as a means of decreasing the down draught.

Kvinnors upplevelser av att leva med utmattningssyndrom och deras upplevda stöd från omgivningen

Introduktion: HIV är en kronisk sjukdom vilken i Sverige uppskattas att 6 400människor lever med. Psykosociala symtom som rädsla och oro har visat sig vanligahos människor med HIV. Behandlingen för HIV är kostsam och har mångabiverkningar vilket leder till att den drabbade har ett livslångt behov av omvårdnad.Comfort theory assesment (CTA) är ett holistiskt förhållningssätt som hjälpersjuksköterskan att identifiera de omvårdnadsinterventioner som patienter är i behovav.Syfte: Litteraturstudiens syfte var var att belysa rädsla och dess ursprung hosmänniskor som lever med en HIVinfektion.Metod: En litteraturstudie har genomförts med hjälp av Polit och Becks (2012)niostegmetod. Databaserna PubMed och Cinahl har använts liksom frisökningar föratt finna de 11 artiklar som utgör resultatet av litteraturstudien. Artiklarna hargenomgått en urvalsprocess och granskats.Resultat: Två huvudkategorier har identifierats och redovisats: ?rädsla kopplad till detprivata och personliga? och ?rädsla kopplad till samhället? vilka redovisas medtillhörande underkategorier.Slutsats: Människor som lever med HIVinfektion upplever rädsla av olika ursprung.Rädsla upplevs i det egna hemmet såväl som i samhället.

Kloridutlakning från flygaska : möjligheten till en lokal hantering

In Sweden, there are limits to how much leachable substances waste must contain in order to be deposited as hazardous waste. Fly ash from waste incineration often end up over the limit, mainly due to the chloride content. Fly ash is therefore often deposited abroad. The purpose of this study was to investigate the possibility to handle fly ash locally. To clarify how the law is applied, environmental reports and permit documents from ten waste sites with permission to deposit fly ash were studied.

LIDESK : En materialstudie för Edsbyverken

Edsbyverken Office Furniture has over the past 100 years been producing delicate carpentry products, chairs and skiis, but more recently the focus has shifted to furniture for the modern office environment. With a wide selection of products and its characteristic neutral design, Edsbyverken has an extensive group of clients both in Sweden and internationally. The aim of my C level thesis project was to examine the materials Edsbyverken is currently using in order to develop new designs or product functions. Simultanesously, I also wanted to verify whether the method I developed for this project - to initially undertake a comprehensive study of the chosen materials and thereafter specialise on a certain product and target audience ? was effective and successful.

Hållbarhetsaspekter på tillvaratagande av spillvärme i borrhålslager- ur ett företags- och samhällsperspektiv

The objective of this study is to examine the sustainability of recovering industrial wasteheat from several heat sources in a foundry constructed in a plant belonging to ITT Waterand Wastewater in Emmaboda, Sweden. A triple bottom line perspective will be appliedto achieve this objective. The triple bottom line approach takes into account ecologicaland social performance in addition to financial performance. The technology forrecovering the waste heat is a Borehole Thermal Energy Storage (BTES) which is aconstruction consisting of 140 vertical boreholes, 150 meters deep with an internal spaceof four meters.The calculated amount of energy for storage is approximately 3800 MWh annually. Ofthis amount 2500 MWh are expected to be utilized, while storage losses accounts for theremaining part.

Trä- och stålreglars påverkan av värmeflödet i utfackningsväggar

Inom dagens byggande i Sverige ställs allt högre krav på den värmeisolerande förmågan hos klimatskärmen i de hus som byggs. Detta ställer i sin tur högre krav på konstruktionerna och medför även ny problematik. Standardlösningar som tidigare fungerat bra byts ut mot nya, ibland obeprövade, lösningar. De hårdare kraven på energi- och fuktdimensionering innebär alltså att vikten av val av stommaterial ökar vid en projektering.Vi har här försökt ge en realistisk bild av hur valet av reglar kan påverka energi och fukttillståndet hos en byggnad med utfackningsväggar, med fokus på reglar i fält. Till undersökningen användes referensobjekt i form av ritningar som tillhandahölls av handledaren på Clarus arkitekter.

Regionala och sociala skillnader i hälsotillstånd : En jämförelsestudie av Danderyd och Rinkeby

Sweden's population holds today one of the highest life expectancies in the world and an increasing number of Swedes believe that they have good health. However, the problem still remains that there exists significant differences in health between different population groups and neighborhoods. Two neighborhoods that demonstrate high inequality in health status are Rinkeby and Danderyd in Stockholm County.    The purpose of this study was to examine why health differs between different neighborhoods and how residents experience the area and their health. To answer this purpose a combination of statistical data and qualitative interviews with residents in Danderyd and Rinkeby has been used with an additional literature review.      The study showed that the causes of health inequalities between these neighborhoods was primarily concerned with the factors of education, economic conditions, ethnicity, conditions of comfort and companionship and the surrounding residential environment. The population in Danderyd, made up largely of people with high education, good economic conditions and few foreign-born, while the majority of Rinkeby?s population consists of individuals with low education, poor economic conditions and a high proportion of inhabitants of foreign origin, which are determining factors leading to poorer health status among the population.

Sjuksköterskestudenters uppfattningar av betydelsefulla omvårdnadsbeteenden för att ge patienter en god omvårdnad.

AbstractThe aim with the study was to describe and to compare nurse students' views about importantcaring behaviors in order to give good caring. An empirical comparative study wasimplemented on a college in the middle of Sweden. Nurse students in the beginning and at theend of their education sorted and prioritized 50 caring behaviors (CARE-Q). The result showedthat the students' description of important caring behaviors has many similarities. However, theresult also showed that there were significant differences between the student-groups where thestudents at the beginning of their education rated several caring behavior as significant moreimportant than the students in the end of their education.

Kan ät- och liggbås påverka kornas välbefinnande?

The purpose of this literature review was from dairy cows? behaviour and welfare point ofview describe how feed bunk and cubicles in a loose house system should be designed. Todaydairy cows in Sweden and in the world have high demands because of a high milk production,stress and higher risk of being afflicted with diseases. Through selection in breeding the bestquality can be performed, but high demands of the environment for the dairy cow is above allalso important for a good welfare and for a good milk production. Feed bunks and cubiclesare just some parts to be designed in the best way for a good animal welfare.

Tilla?mpning och simulering av naturlig ventilation : Potential fo?r utnyttjande i kontorsrum

Mechanical ventilation is the most common type ofventilation in newly constructed office buildings. Therehas been an interest to utilize natural ventilationinstead of mechanical ventilation among architects andHVAC consultants in recent years. This is due to thesize of mechanical ventilation systems, which arespace consuming. The mechanical ventilation system isalso complex and requires maintenance. Furthermore,the fan uses a considerable amount of energy.

Analys och kvantifiering av energieffektivisering inom fjärrvärmesektorn

The Swedish Government has set a target to reduce energy consumption through energy efficiency within the construction and real estate sector. The purpose of the study is to examine how energy efficiency within this sector could affect the district heating volume in the future, on basis of Vattenfalls district heating system in Uppsala.An Excel model has been created to study how energy effficiency measures affects district heating demand in buildings by 2045, based on technical and economicalconditions. Furthermore, an interview study has been conducted to examine incentives for district heating customers to invest in energy efficiency measures.Result of the Excel model shows that the district heating volume of Vattenfall in 2045 is expected to 931 GWh, which corresponds to a volume decrease of 10,6 %. Based on the study?s theoretical framework only 15 %, 1 024 GWh, of the technical-economical potential is assumed to be implemented.

Utveckling av Trailplate - En skyddande innersula

The project aimed to develop a protective and stabilizing insole called Trailplate for soft andlight shoes. The demand came primarily from off-road runners in France, Switzerland, andAustria. The project was carried out at Icebug, a company that develops shoes mainly forrough terrain. The main focus has been on the trailplate which is designed to fit severaldifferent shoes.Torsional stiffness and bending resistance were the main objectives. To improve the existinginsole, a material with the right features was required.

Undersökning av snöskoterstyrets inverkan på vibrationsemissioner för hand-arm vibrationer

I dagsläget finns det en rad olika eftermarknadsprodukter som påstår sig reducera vibrationer som förekommer vid skoterkörning. Denna rapport har på uppdrag av Center for Vibration Comfort AB (CVK) undersökt skoterstyrets inverkan på vibrationsemissioner för hand-arm vibrationer (HAV), samt vilken inverkan olika eftermarknadsprodukter har på emissionerna. Tidigare rapporter inom ämnet påvisar att skoterförare riskerar mer än tre gånger så hög chans för Raynaud?s fenomen (?Vita-fingrar syndromet?)(17% av förarna påvisade syndromet) gentemot kontrollgrupper (5% påvisade syndromet). De påvisar även att de farliga vibrationerna i styret kunde dämpas med 30-40% genom att använda isolatorer vid motorfäste, välja lämplig längd på styre samt använda gummiplattor vid stödytor.

Att opereras och vara vaken : Upplevelser utifrån patientperspektivet

Det är vanligt att patienter som genomgår kirurgi får antingen lokal eller regional anestesi istället för att bli helt sövda. Denna anestesiform kräver mycket av patienten avseende samarbete. Den perioperativa omvårdnaden anpassas under varje operation efter den enskilde patientens behov. Denna studie har utförts som en litteraturstudie med syftet att beskriva patienters upplevelser under vaken kirurgi. Resultatet kategoriserades utefter tre teman; Upplevelser av smärta och obekvämlighet, Upplevelser av oro och ångest och Upplevelser av utsatthet eller delaktighet.

DYNAMIKEN OCH EFFEKTEN AV MARINA V?RMEB?LJOR P? TROPISKA KORALLER (SCLERACTINIA)

Marine heatwaves (MHW) have become increasingly common in recent decades due to greenhouse gas emissions that have caused climate change. A marine heatwave is when the sea surface temperature rises, which damage many different ecosystems in the sea. One ecosystem that is sensitive to temperature changes is tropical coral reefs, which are at risk of bleaching during marine heatwaves. Coral bleaching is when its symbionts leave the coral and they lose their color, while also starving to death as they lose their food source. The purpose of this report was therefore to investigate what the connection between marine heatwaves and coral bleaching looks like, and to see if there are any geographical differences.

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