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4172 Uppsatser om Cooling methods - Sida 4 av 279

Energikartläggning av avfallsförbränningen i Uppsala

Vattenfall Heat Uppsala runs the waste incineration plant in Uppsala, which produces district heating, process steam, district cooling and electricity. Vattenfall Heat Uppsala has decided to introduce an energy management system with the aim to increase the energy efficiency of the plant. The basis in such a system is to make an energy mapping.In this thesis an energy mapping has been performed at the waste incineration plant with the aim to identify and determine the size of energy flows. The investigated energy flows are used fuel, produced and used steam, produced district heating and cooling. Also the use of electricity to run the processes has been investigated.

Rehabiliteringsmetoder för häst och hund :

Today, many veterinary hospitals offer rehabilitation as a service. We think that this is an interesting subject and therefore we want to find out what rehabilitation methods that are available in Sweden for dogs and horses. We want to give animal nurses and other persons who have animals as an occupation an survey that shortly describes how the methods are performed, what physical effect they have in the body and to give examples in what conditions they are used. To find out what rehabilitation methods that are available we sent out two different questionnaires, one to hospitals/clinics for small animals and one to hospitals/clinics for horses and other companies that works with rehabilitation of horses. The information about the methods described in our project we have found in literature and on the Internet.

Energismart modulhus med takintegrerade solceller

The purpose of this thesis is to examine how investments are justified in the Swedish data center industry, with a focus on cooling equipment. This is achieved through semi-structured interviews with 20 different interviewees. These interviewees represent different facets of the industry and facilitate an understanding of which factors, such as: investment costs, operating costs, reliability, environmental impact and the influence of external and internal actors, come into play and to which degree they impact the investment decision-making process. The results show that primarily low operating cost in the form of low energy consumption is the driving factor when it comes to the procurement of new equipment. A lower environmental impact is a positive side-effect of lower energy consumption.

Den kamoflerade värdegrunden : En undersökning om hur värdegrunden i Lpo 94 visar sig i fyra ungdomsromaner

Then the language learning process and the approach in a preparatory class differs itself from a general class. The methods conducted in a preparatory class are not just focused on teaching as in a more traditional method. Achieving the objectives in a preparatory class depends on the individual student and the cohesion in the group. Students have different backgrounds and knowledge level, therefore it is extremely important that the teachers use different work methods in order to achieve and to promote the students' language development. The aim with this survey is to get the knowledge about what education methods is being used by teachers in a preparatory class.

Vägledningsmetoder? Ja, tack! Nej, tack! : Om användninga av vägledningsmetoder av yrkesverksamma studie- och yrkesvägledare

The overall aim of this study is to achieve the increased knowledge of the use of the counselling methods in the student counsellors' work and to find the possibilities for development. Two questions are used as guidelines:Which counselling methods do student counsellors use in their work in schools?How can the current education for the student counsellors be supplemented?The analysis of the interviews with six counsellors in Stockholm's administrative province showed that even uneducated counsellors use the same counselling methods as the educated ones. All these methods which are used remind of the known counselling methods that are the part of the current education for the student counsellors.In general counsellors experienced that the education for the counsellors should be supplemented within the field children with special needs and that conversation's methodology is the essence of the counselling work..

Ett flervariabelt feldetekteringssystem för övervakning av bärlagertemperaturen i vattenkraftturbiner

The purpose of this thesis work was to develop an automatic fault detection system for surveillance of bearing temperature in hydropower turbines. The parameters used except the bearing temperature were cooling water temperature and cooling water flow. A simple static model based on data sampled every minute was developed to estimate the bearing temperature. Then a detector for detection of change in bearing temperature based on the CUSUM-algorithm was designed. Since the amount of data was very small the developed model was too uncertain to be used in a working system.The designed fault detection system showed to work well for the available data.

Marknadsundersökning inom datacenterbranschen : Undersökning av tekniska inköp, med fokuspå kyllösningar

The purpose of this thesis is to examine how investments are justified in the Swedish data center industry, with a focus on cooling equipment. This is achieved through semi-structured interviews with 20 different interviewees. These interviewees represent different facets of the industry and facilitate an understanding of which factors, such as: investment costs, operating costs, reliability, environmental impact and the influence of external and internal actors, come into play and to which degree they impact the investment decision-making process. The results show that primarily low operating cost in the form of low energy consumption is the driving factor when it comes to the procurement of new equipment. A lower environmental impact is a positive side-effect of lower energy consumption.

Tillämpning av lättrörliga systemutvecklingsmetoder - en studie av systemutvecklingsprocessen i en ad hoc-krati

Due to fast growing and rapid changes in markets today, most of the organizationsthat are trying keep up with these changes have a high demand for software that areof high quality and comes with a low price. To meet these goals software companieshave to implement new methods to develop software that are suited for rapidchanges. The concept of agile methods can fulfill this need. Our purpose with thisthesis was to investigate how well agile methods could be applied in organizationsthat could be identified as adhocracies. A case study was conducted in anorganization which we could identify as an adhocracy.

Restvärmeåteranvändning från absorptionsvärmepumpar : en kartläggning av möjligheter och begränsningar vid Vattenfall Värme Uppsala Block 5

Vattenfall district Heating power plant in Uppsala produces district cooling with absorption heat pumps which leads to a large amount of waste heat that has to be cooled with evaporative cooling towers. The Environmental Court has ordered Vattenfall to survey the possibilities to recover the heat, which is the focus of this thesis.The study begins with an overview of the system, and conditions and limitations for waste heat recovery is examined. In the next step alternatives to recycle the heat is evaluated, either by direct recovering or by upgrading.First, the technical possibility of each alternative is discussed, and then the operation time and the amount of recovered heat is calculated. Those alternatives which are possible are brought further to an economic analysis.The cost of investment for each alternative constitutes the basis for a present value analysis. The results are put together in a table where the total amount of recovered heat is compared with the present value for the different alternatives.

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.

Driva tulpaner i näringslösning eller i jord :

The aim with this thesis is to make a comparison between forcing tulips in a hydroponic system and the forcing off tulips that have been planted in soil. The results are mostly based on interviews with six Dutch and one Swedish tulip forcer and the managing director at the Horticultural Research Centre, Proeftuin Zwaagdijke, in the Netherlands. There are benefits and disadvantages with both methods. Tulip bulbs planted in soil seem to get a brighter colour after forcing, compared with those forced ?in water?.

Metoder för kommunikation som främjar välbefinnandet hos personer med demens

AbstractAbout 160 000 persons living inSwedensuffer from some form of dementia. Alzheimer disease is the most common form of dementia and affects mostly people in the age of 65 and older. People with some form of dementia have memory problems and may even have other problems as aphasia and behavioral disorders. This may lead to communication problems and difficulties for the people around them. The number of demented people is increasing; it is therefore important to study methods for communication in order to improve the wellbeing for people with dementia.

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.

Att datorisera ett bibliotek: datoriseringen av skolbiblioteket på Sunnerbogymnasiet i Ljungby

The purpose of this paper is to describe methods to computerize a library and to compare theory with a process in a school library. The case study is based on a school library called Sunnerbogymnasiet which is situated in Ljungby. My questions are;- Which methods are parts of the process to computerize a library?- Which methods are used in the process in Sunnerbogymnasiet?- What does the practical process look like compared to the methods described in theory?In the paper I present the methods in the process according to the studied literature and compare these with a process at Sunnerbogymnasiet. The most significant result is that cooperation between the school library and the community library was the most important reason for the choice of library computer system.

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.

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