Sökresultat:
712 Uppsatser om Exhaust air heat pump - Sida 32 av 48
Isolerande och skyddande dubbelväv - Produktutveckling av ett kylande fodral
Denna rapport beskriver en produktutvecklingsprocess som behandlar utvecklandet av ett textilt material som isolerar och skyddar. Det textila materialet ska fungera till ett kylande fodral utan att förstöra dess funktion och behöver därför uppfylla en speciell kravspecifikation. Materialet ska isolera mot kroppsvärme, vara stabilt, skyddande och slitstarkt. Dubbelväv valdes tidigt i arbetet då det är ett enkelt sätt att kunna påverka det textila materialets egenskaper i form av material- och konstruktionsval, i en betydligt större utsträckning än i en enkelsidig väv. För att utveckla ett material med de efterfrågade egenskaperna har tester utförs och den metod som har använts är hypotesprövning.
Virtuell design av en testrigg för ett vindkraftverks drivlina - Analys av vibrationsdynamik
This bachelor thesis has the purpose to visualize and document the air movementsprovided by different ventilation principles in an operating theatre. The visualizationwill be made as simple as possible in a physical model. The model and thedocumentation should be able to use in educational purposes.The study is based on the two most common systems for airflow, currently used inoperating theatres. The first principle is displacement ventilation in which the air issupplied at low velocity along the floor. The second principle is vertical parallel laminarairflow in which the air is compressed like a piston from ceiling to the floor.A review of literature resulted in the choice of size, design, and scale factor for themodel, as well as choices of ventilation principles and airflows.
När livets pump förlorar kraft : en litteraturstudie om hjärtsviktssjukas upplevelser i det palliativa skedet
Bakgrund: När hjärtat förlorar pumpkraft eller förmågan att fylla kamrarna tillräckligt med blod uppstår hjärtsvikt. Tillståndet är allvarligt och frekvensen av insjuknanden förväntas öka. I många fall är prognosen sämre än vid flera cancersjukdomar. Den palliativa vården är idag främst koncentrerad på avancerad cancer. Forskning visar på att patienter med svår hjärtsvikt har jämförbara upplevelser med de som insjuknat i avancerad cancer, men erhåller inte den vård som svårt cancersjuka får i ett palliativt skede.Syfte: Syftet var att belysa hjärtsviktssjuka patienters upplevelser av att vara sjuk i det palliativa skedet, för att med detta som grund utveckla god vårdkvalitet för denna patientgrupp.Metod: Systematisk litteraturstudie med kvalitativ ansats.
Automatisk tändning till modern vedpanna
If you have access to wood, a wood burning boiler is a cheap way to heat your home, but it is certainly not the most convenient option. Wood requires many operations and management, which takes time. One way to reduce this workload is to have a modern boiler with automatic ignition. Enertech/CTC has a desire to create an accessory with automatic ignition to a modern wood burning boiler. Today there is no boiler on the market that can ignite firewood automatically without the introduction of paper and sticks.
Energianvändning i badhus : Simulering och jämförelse av gamla och nya system
Every year new premises are built in Sweden, and even if they are made as energy efficient as possible, this will not reduce the energy demands, but the rate of the increase of the energy use will be reduced. One type of facility in Sweden that is a major energy user is public baths, and this makes public baths an interesting facility to study more closely. There are around 500 public baths in Sweden and about 75 % of those can be seen as older baths with large need of renovation, and they all require a high level of energy efficiency measures. To show how the energy demand increase or decrease depending on the changes chosen to be made, the simulation application IDA Indoor Climate and Energy was used. Simulations were made and compared for several cases, with two extreme cases as starting points.
Mjölkraskvigors tillväxt på naturbete :
To turn the dairy heifers out on pasture is the most natural way for the cattle to get feed.
At the same time it is cheap and if it is right treated a feed of high nutritive value. The
problem today is to get dairy heifers to grow enough when they are grazing at natural
pasture for the entire summer. Therefore, the opinions differ whether pasture is a
resource or a problem.
The increasing interest of pasture production is due to the fact that you can receive
grants for preserving valuable natural assets and cultural landscape elements in the
pasture land.
A high grazing pressure is necessary to preserve an open landscape and a great variety
of species. In the same time the heifers have to supply their nutritive needs in order to
grow and be large enough to show heat and be pregnant in right time to calve with a
sufficient body size and at an economically right age.
This paper includes a literature review on natural pasture, pasture production, and
growth of dairy heifers together with own interviews with dairy farmers about their
point of view to the pasture husbandry on the farms, how they plan for pasture, look
after natural pasture, treatment areas and take care of the calves and heifers. The results
indicate that the time it takes and the demanded work are the biggest factors to how and
why the farmers do as they do..
Primärenergianvändning av passivhus i Sverige : Med fokus på Kvarteret Trettondagen
The building sector accounted for around a fourth of the total energy usage in Sweden in year 2010 (Energimyndigheten, 2012). Therefore it has become very interesting to achieve a lower energy usage in residential buildings. One way to achieve that is to build so called passive houses. By being very well insulated and have low leakage through the walls, they can reduce the energy usage for heating with a substantial amount. The first passive house was built during the 90?s in Germany; and in Sweden the first passive house was built in Gothenburg 2001.
Skador hos betongöverbyggnader för spårväg
This bachelor thesis has the purpose to visualize and document the air movementsprovided by different ventilation principles in an operating theatre. The visualizationwill be made as simple as possible in a physical model. The model and thedocumentation should be able to use in educational purposes.The study is based on the two most common systems for airflow, currently used inoperating theatres. The first principle is displacement ventilation in which the air issupplied at low velocity along the floor. The second principle is vertical parallel laminarairflow in which the air is compressed like a piston from ceiling to the floor.A review of literature resulted in the choice of size, design, and scale factor for themodel, as well as choices of ventilation principles and airflows.
Smärtlindring hos kalv efter avhorning. En beteendestudie där effekten av meloxikam som postoperativ analgesi utvärderas :
In this study, 29 calves were dehorned by heat cauterisation at the age of 1 to 8 weeks. Before the procedure, the calves were given local anaesthetic but were not sedated. In connection with the dehorning, 14 calves were given the non-steroidal anti-inflammatory drug (NSAID) meloxicam and 15 calves were given placebo. During the following three days behavioural studies were performed to investigate if the different treatments had any effect on the calves´ postoperative behaviour.
Head shakes, head rubs, kicks and ear flicks were studied, as earlier studies have shown that an increase in these behavioural patterns suggests postoperative pain.
Ångsterilisering av morötter. Infekterade med Lactobacillus plantarum.
The purpose of the project was to exam steams ability to sterilize carrots infected withLactobacillus plantarum. The project was a cowork with Brämhults Juice AB. They hadobserved an increase of Lactobacillus in the production of carrot juice during the summer. Tokeep the flavour of fresh fruits, the juice is treated carefully with heat. This means that thejuice only stays fresh for a few days, around two weeks for an unopened package and threedays for an opened package.In an attempt to remove the remaining Lactobacillus of the carrots, steam is tested as an extrastep in the production of juice.
Jämförelse mellan traditionell mängdavtagning, mängdavtagning med BIM och det verkliga utfallet på arbetsplatsen
This bachelor thesis has the purpose to visualize and document the air movementsprovided by different ventilation principles in an operating theatre. The visualizationwill be made as simple as possible in a physical model. The model and thedocumentation should be able to use in educational purposes.The study is based on the two most common systems for airflow, currently used inoperating theatres. The first principle is displacement ventilation in which the air issupplied at low velocity along the floor. The second principle is vertical parallel laminarairflow in which the air is compressed like a piston from ceiling to the floor.A review of literature resulted in the choice of size, design, and scale factor for themodel, as well as choices of ventilation principles and airflows.
Självkompakterande betong vid platsgjutning av anläggningskonstruktioner
By using modern methods of casting concrete, cast in place can get more effective and industrialized. A modern method is self compacting concrete. By using this type of concrete, advantages like improved working environment and rationalized construction can be reached. Because the concrete doesn?t need to be vibrated, the amount of staff on site and the noise can be reduced.
Kvinnors upplevelser av smärta och blödning samt möjlighet att upptäcka fostret i samband med hemabort : En enkätstudie vid två kliniker i Sverige
The purpose of this study was to investigate women's experiences of pain, bleeding,to discover the fetus, hospitalization associated with medical abortion at home and toexplore differences in experiences between different groups of women, as age orprevious childbirth. The study was conducted at two gynecological clinics in Uppsalaand in Stockholm. A questionnaire was distributed and analyzed using a quantitativeanalysis method. The response rate was 30 %. Most women were satisfied with thepain relief given to them from the hospital.
Ultraljud vid tidig dräktighetsdiagnostik på nötkreatur : en fältstudie för att bestämma lämplig undersökningsdag och frekvens på ultraljudsproben
The use of transrectal ultrasonography of the uterus is a fairly new method for early pregnancy diagnosis. In the present study 40 cows and 10 heifers were examined 16, 19, 22 and 25 days after artificial insemination to decide on what day an accurate pregnancy diagnosis could be made under field conditions. A 5 and 7,5 MHz transducer were used in all examinations in order to determine wheter one of them was better for the present purpose. The animals were also examined for clinical signs of oestrus. The results shows that an accurate pregnancy diagnosis "not pregnant" was easier to make on day 22 than on day 25 since most of the not pregnant cows then were in heat.
Metodik för optisk mätning av sprickbildning i dragen betong på mesonivå
This bachelor thesis has the purpose to visualize and document the air movementsprovided by different ventilation principles in an operating theatre. The visualizationwill be made as simple as possible in a physical model. The model and thedocumentation should be able to use in educational purposes.The study is based on the two most common systems for airflow, currently used inoperating theatres. The first principle is displacement ventilation in which the air issupplied at low velocity along the floor. The second principle is vertical parallel laminarairflow in which the air is compressed like a piston from ceiling to the floor.A review of literature resulted in the choice of size, design, and scale factor for themodel, as well as choices of ventilation principles and airflows.