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476 Uppsatser om Cooling head - Sida 6 av 32
Energianvändning i restauranger i Umeå kommun
Efficient energy use in restaurantsUmeå Municipality wishes to combine energy issues with food control, and thus help restaurants to become more energy efficient. During March and April 2010, I visited seven restaurants and interviewed restaurant personnel about current state and application of kitchen appliances, using a checklist to make sure that the same questions were asked at all restaurants. The restaurants were all different sizes and offered different kinds of food. The study mostly focuses on energy efficiency by behaviour and not on location or technology. Almost every restaurant that was visited had the potential to improve in one or more areas, such as kitchen appliances, lamps and lighting fixtures, heating, cooling and ventilation.
Transport av häst på land :
The aim of this review is to evaluate the best way to transport the horse. When it comes to transporting horses there are a number of different types of trailers and trucks that you can choose from today. The most common type of trailer is designed for two horses and the horses are transported facing the direction of travel. Studies has been performed to determine if that is the most advantageous direction for the horse to travel in, in terms of balance and levels of stress. Stress is a widely discussed subject and the definition is not fully developed.
Elektromagnetisk och mekanisk design av en 20MW turbogenerator
At the Division of Electricity at UppsalaUniversitythere are ongoing researches, including a research concerning turbo generators.Turbo generators produce a large share of electricity in the world; however they are costly mainly due to the fact that the cooling and ventilation that are needed to eliminate the excess heat from the generators are expensive. Turbo generators work with high efficiency and in this project, the main task is to simulate a generator while taking into account that the generator must be designed against self-oscillation, centrifugal force, exhaustion and heat. The turbo generator must be simulated without being too expensive and complicated.In this project, the dimensions of the turbo generator depend on the efficiency of it, and where the losses are in the generator. Furthermore, the optimum values need to be chosen with the help of the ACE simulation program. The report begins with an introduction describing the project followed by a task description that is dealing with the project.
Läggning och resning hos ungtjurar i liggbås : inverkan av båsfrontsutförande
Cattle have a species specific movement pattern when lying down and getting up. They need sufficient space for their heads to perform these movements normally. The aim of this study was to investigate the lying down and getting up behaviour of beef bulls at a Swedish farm operation. The hypothesis was that bulls older than 10 months (over approximately 400 kg) were disturbed by a horizontal front rail and that the time to lie down and get up differed from what can be regarded as normal based on earlier scientific studies. The bulls were Swedish Red and White (SRB), Swedish Friesian (SLB) or crossbreeds of these two, and were kept in a cubicle system with a stall front design where there was a horizontal rail 40 cm above the stall floor.
Energieffektivisering av modern tillbyggnad till äldre skola : fallstudie från Österbyskolan i Österbybruk
The Swedish government has introduced a goal to reduce the energy intensity by 20% to the year 2020. To reach this goal actions need to be taken throughout the energy sector which includes residential and commercial buildings. This thesis considers the possibility to reduce the energy usage in a building located close to Uppsala. The analyzed building is a combined office, cafeteria and entrance and was completed about half a year before this project started. Therefore the measures presented for a more energy efficient building are presented as measures for future constructions.Simulations have been made in VIP-Energy, a dynamic energy calculation program.
Energikartläggning och driftoptimering genom behovsstyrning i befintlig fastighet
Energy supply in Sweden year 2011 amounted to 577 TWh. The final energy consumption for industrial, residential and service was 379 TWh. Sweden has energy policy goals to reduce energy use in buildings. One of these goals is to reduce the energy use by 20 % in 2020 compared to the year 1995. An important step to achieve this goal is to target energy efficiency measures in existing buildings.
Nominalfrasers inverkan på återvinningseffektiviteten i ett probabilistiskt IR-system
The purpose of this study is to examine the difference between three query strategies with respect to retrieval effectiveness. The thesis aims at examining how two types of noun phrases containing a modifier to the head word, which is a noun affect the retrieval performance with regard to recall and precision. The noun phrases in the thesis are of two types: 1) noun phrases containing a modifier to the head word (which is a noun) and which are not dictionary phrases (NF) and 2) dictionary phrases. Both types of noun phrases in this thesis contain at least two words. The queries were executed in Query Performance Analyser, QPA, containing the InQuery system and a sub collection of TREC-Uta documents with its topics.
Automatic registration of dairy cows grazing behaviour on pasture
Information regarding cows grazing behaviour and time spent grazing can be of great interest to dairy farmers, since this information can indicate how well suited the pasture is to the cows. Feed intake at pasture is however challenging to measure. Automated systems for monitoring the behaviour of cows within dairy production have become increasingly important and relatively common. The aim of this study was to validate an activity measuring device (HOBO® G Logger Pendant Data Logger, USA), a triaxial accelerometer that registers the cow?s head positions during grazing, in order to see if cows? grazing behaviour on pasture could be distinguished from their non grazing behaviour.
Analys av hur byggnadens höjd påverkar energiförbrukningen i flerbostads- och kontorshus
This diploma work has been carried out in collaboration with the building contractor Sh Bygg Fastighetsutveckling AB in Uppsala with the intention to investigate how the height of a building affects various energy aspects such as transmission losses, infiltration, and the specific energy usage. Three different reference objects have been studied. The reference objects have been simulated for four different heights in the calculation program VIP-Energy.The results show that an increase in floor number can lead to both advantages and disadvantages. As the number of floors increases, transmission losses per square meter floor area decreases. However, as the height of the building increases, the reduction rate decreases.
Det obetydliga : om fiskhuvudformiga hängen, sociala praktiker och förändring, 600-1200 e. Kr.
Fish-head pendants are one of the characteristic Gotlandic Late Iron Age artefacts. This object has been rather neglected and mainly considered as an insignificant embellishment, normally worn as a neck-collar and seen as an artefact include in the typical Gotlandic set of female jewellery.The fact that the fish-head pendant has a very long life span, which stretches from grave-finds in the Early Vendel Age to hoards in Viking Age as well as secondary usage as brooches in the Early Middle Ages, makes the artefact an excellent starting point for discussions on social practices and change through material culture. It's shown in this study that, contrary to previous beliefs, the normal usages for fish-head pendants is as solitary pendants and not as neck-collars. Neck-collars is shown to have an intricate relation to inhumations for young individuals, whereas solitary pendants are found in cremation deposits for adult individuals, something that relates to a fixed social practice mainly in the period 700-900 AD and that develops from the cremation funeral practice. This particular social practice relates to aspects of attraction and protection and continues in to the 10th century outside of funeral structures, which is shown by the composition of hoard-finds from the 10th century, but is totally absent when the pendants is given a secondary usage as brooches in the end of the 11th and beginning of the 12th century.
Interaktionens betydelse mellan varuma?rken och konsumenter : En instrumentell fallstudie av varuma?rket Head and Shoulders och dess reklamfilm
In today?s society, people do not solely purchase a product for its promised use. Instead, a brand is purchased and along with that brand comes a variety of associations. The associations of a product?s brand are what contributes to the added value that, according to this study, is what distinguishes a brand?s power.
Att erbjuda största möjliga lycka: en kvalitativ studie av ett parledarskap på en somatisk vårdavdelning
The aim of this study was to investigate leadership in public health care. The methods used were shadowing and semi-structured interviews. The shadowing involved observing the shared leadership of two head nurses in an administrative management position of a ward in their daily work during two weeks. The observation was supplemented by ten semi-structured interviews. A thematic analysis of the data was carried out and the result indicated that shared leadership is a form of leadership well suited for an organisation as big and complex as the clinic where the study took place.
I Gripdjurets grepp : om skandinavisk djurornamentik, bildtolknings metodik och djurhuvudformiga spännen
Animal art is one of the more mystical aspects of Scandinavian Iron Age culture. It has foremost been regarded in the light of art and style history. Interpretation has also ? mainly from the 1990s and onwards ? been made through iconographic analysis. But the problem here is that iconography requires textual analogy, something that the Scandinavian Iron Age lacks.The purpose of this paper is to lift some of the ?mystical fog? that engulfs the scandinavian animal art, by developing a method for interpretation of pre-historic images that evades the flaws in the iconographic method.
Chefskap och styrning: en studie om ledarskap på en socialförvaltning
The purpose of this essay was to analyze the management and steering of the social welfare service. The objective was specifically to examine how the leaders approach their position as managers of the social welfare service, and also how they approach their way of steering. The social welfare service acts under political decisions, but the management interpret and transform these decisions into actions. The managers of the social welfare service are therefore important from a democratic perspective. The study was based on five qualitative interviews with two managers of the unity, two departmental managers and the head manager of the social welfare service.
Utredning av solenergi för drivning av sorptiv kylprocess för inomhusluften på Stockholmsarenan
Cooling down the indoor air can be done in several ways. One way is desiccantcooling which will be used at the Stockholm Arena. This method is used in airhandling units that use temperature changes and moisture fluctuations in the air. Oneof the steps is to add heat during the cooling process in order to reduce the relativehumidity of the exhaust air. The air passes thru an adsorptions rotor which thenabsorbs moisture from the supply air.