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4449 Uppsatser om Energy survey - Sida 51 av 297
Jobbiga biljetter
This bachelor?s thesis report aims to investigate the problems that exist with the ticketing systems ofthe various regional public transportation authorities, specifically with regards to inexperiencedtravellers and cross-county travel.This is done in part through a comprehensive survey for all of Sweden where both the regional publictransportation authorities and passengers were asked about their opinions, as well as a throughin-depth survey focused on the counties of Stockholm and Uppsala. The results of these surveys arethen compiled and analyzed to identify the biggest common problems.The tree biggest problems prove to be a complicated implementation, lack of availability and lack ofinformation. In order to improve the ticketing system it is therefore proposed to implement asimplified ticketing system, as well as improved accessibility and information. .
Småskalig elproduktion i Arvika
Arvika Fjärrvärme AB, a district heating company from Arvika, today cover 74 % of their total energy production with biofuel wich runs a 16 MW bioler giving process water at saturated liquid state.In recent years Vaporel AB has introduced a new tecnique that gives an external generation of steam after boilers. The concept is built on an adiabatic pressure drop of the saturated liquid in a so called Flashbox which makes a small part of the liquid to evaporate. The generated steam is lead into a turbine where electricity is in a conventional manner.The purpose with this rapport was to do a basic study for the specific system at Arvika where it?s possible to see the potential production of electricity that follows an installation of a flasbox.The final goal was to introduce an economic analysis of a flashox installation at given conditions.To reach our goals we have created a model in Excel where we used the given conditions at Arvika Fjärrvärme to do our calculations. The model has been tested at three different states, of process water returning to potboiler, to be able to decide the optimal operation for the system at present.The studies have resulted in a pressure of the processwater at 14,5 bar (at) and a pressuredrop to 9,5 bar (at) in the flashbox.
Bibliotekariestudenter - informationsnissar eller kultursnubbar: vem söker till bibliotekarieutbildningarna i Lund och Umeå, och varför?
This thesig will portray the different types of students at the programs of library studiesin Lund &d Umeå.The study is based upon quantitative information gathered from a survey, which wasdistributed to first-year students in Lund and Umeå. The survey was followed by qualitativeinterviews with four students, and with the director of studies from each school.The study shows that the programs, as we11 as the students, are very similar, althoughthere are some minor diferences. It seemed that the students at Umeå were moreinterested4n culture than those at Lund.A certain connection between the aim at information and the ownership of a computercould be detected. The sex of the students played a major part in their choice of education.The attractors and facilitators, used by Lortie in his study, could also be appliedto the students at the program of library studies in our thesis..
Energieffektivisering på Vista
Sweden has distinct seasons with cold winter and temperatures down to minus 25 ?C andpleasant summers with temperatures above 20 ?C. During spring and autumn there could becomechallenges with precipitation. The diverse climate in Sweden affects many homeowners. For thepeople living in leisure boats and permanent housing boats the seasonal changes are clearlyimpacting their economy and the indoor climate.
Utvärdering av en väggkonstruktion utan PE-folie : Med en undersökning av hårdvaxolja som diffusions-/konvektionsspärr
District heating covers around 80 % of the heating demand in apartment buildings and 10 % in single-family homes in Sweden. In the year 2010 the total input of energy to the Swedish district heating grids was about 70 TWh, which corresponds to 11 % of the total energy input to the whole energy system in the country. Through the combined production of heat and power the CHP-plants often reaches an efficiency of 90 % from energy in the fuel to produced heat and power. In order to keep the efficiency high it is important for the owners of the plant to have good knowledge about the plants performance at different operation points. Strängnäs Energi AB initiated this diploma work together with FVB Sverige ab in order to come up with a program for short term planning of the production of heat and power at the company´s CHP-plant.The work consists of three main parts.
Internetanvändning på Ronneby stadsbibliotek och Läsesalongen/Café Access, Stockholm
The paper aims to find out how staff and users at two public libraries and one Internetcafeuse Internet. The purpose has been to find out what they find and how they use the information they retrieve. The studies are based on eight longer interviews with the staff and 33 shorter with the users, who also were observed for a week. The paper includes a background chapter about Internet, search tools and the studied places. The following chapters are about previous research, our survey and a discussion with the results, literature and our opinion.We have found out that Internet is usually used for information retrieval.
Nätmobbning : om pressens bild av na?tmobbning i relation till ho?gstadie- och gymnasieungdomars erfarenheter
This paper is about cyber-bullying, the youth?s experience and how the papers image of cyber- bullying looks. The relevance of this essay be to be found in the aim of the research of the cyber bullying today. By examining how the youth?s usage and experience?s - and the papers image of cyber-bullying in the social media, it will be possible to create an understanding for how the social media is represented today.
Utveckling av ergonomiskt hjälpmedel för personer med uppresningsbesvär
This report is the final result of the master thesis that have been done at Sharpman Engineering. Sharpman Engineering is a small development and manufacturing company that produces and make drawings for everything from heavy duty log raft to aids for disabled people. The purpose have been to make one concept that make it easy for elderly and people having problem with knee- and back problem to stand up from a sitting position. The final result will the company have for further investigations and use for a pre-serial production with the goal to produce a new working product.To get an overview of what is on the market have a comprehensive survey has been done, followed by a survey on patent. This patent survey are for no intrusion on existing patents should occur and give new ideas.
Solvärme för en skola i Lerum. Studier av olika systemalternativ.
Two elementary schools are now being built in Gråbo (in the municipality of Lerum),Röselidsskolan and Ljungviksskolan, which are both designed with solar thermalcollectors for the schools domestic water heating. During the summer while thelargest amount of solar heat can be generated, the activity hence the domestic wateruse in the schools are heavily reduced. Both schools are connected to the local districtheating system which makes it possible to use the solar collectors to deliver heat tothe district heating.The purpose of this thesis is to evaluate the two systems mentioned above and todetermine which system is more suitable to apply on a school. The building whichconditions were used for this evaluation is Röselidsskolan.A solar heating plant of each system type was dimensioned from the expected andknown conditions of the building. The purpose with the dimensioning was to makethe solar plants replace the ordinary energy source as much as possible.
Fysikattityder hos gymnasieelever? : Trender bland intresse för fysik och fysikattityder bland svenska gymnasieelever
Empirisk forskning har visat att det finns tydliga kopplingar mellan intresse, attityder ochstudieframgångar. Enkätundersökningen som föreligger denna rapport ämnade att mäta hur intressetför fysik och attityder till fysik och fysikundervisningen skiljer sig åt mellan de olika årskurserna pågymnasiet. För att kunna mäta attityderna har enkätverktyget Maryland Physics Expectations(MPEX) Survey använts. Enkäten har besvarats av 605 respondenter från teknik- ochnaturvetenskapsprogrammet på två gymnasiumskolor i Mellansverige. Intresset för fysik är lågt påde undersökta skolorna och det tenderar att bli lägre med åren.
IT-kompetens - utveckling av ett mätinstrument
Problem: In society of today corporate competence is an important factor for
survivor and development. IT is developing rapidly and can not be ignored by
companies. Then need for people with IT-competence is conquent increasing. A
survey of corporate IT-competence is therefore of interest for companies as
well as for local authorities.
To determine the IT competence within an organisation, this competence has to
be measurable.
EU-information : Studenters behov och sökning, EU:s informationsresurser
The aim of this master thesis was to examine the European Commission's information resources from a user perspective in order to clarify the needs and circumstances of the search of EU-information among students at Örebro University. 41 students participated in a survey, and four of them was interviewed. On the basis of Pendelton- and Chatmans theories of information behaviour in small worlds, it were assumed that the students' education and citizenship in the European Union affected their needs and the search of EU information.The study showed that the students needs for EU-related information has increased, with the current education, but also been linked to earlier educations. The students Citizens need were mainly associated with elections such as the EMU-election, but also in some cases to a need of the general knowledge.A review of the European Commission's information resources were made with an emphasis on European Documentation Centre, EDC. The survey showed that most students used the EDC and the EU-databases that was made available by the European Commission through the EDC and the university library but were not aware that they used EDC.The survey also showed that students made use of familiar sources and resources when they searched the EU-information, such as the library's regular database list, the library catalogue and search engine on the internet are not requested of other resources.
Läsinlärningsmetoder : En kvalitativ studie om pedagogers val av metod för läsinlärning
The purpose of this study is to investigate the reading methods that pedagogues, active in classes 1-3, use in the first stage of learning to read and how they consider their own choices of methods. In the theoretical background I sort out the basic differences between synthetic and analytic methods of acquiring the skills of reading. The analytic reading method means that the skills of reading starts with the complete text in order to later analyze the parts of the text. The synthetic method approach is based on a reading method where the parts are linked as a whole. The two methods are considered antipodes but can also be looked upon as complements in the current governing documents.
Metoder att förhindra nedisning av vindkraftverksblad
ABSTRACTMany wind turbines have problems with icing and there is still no effective method to de-ice without stoppage of production and power loss. Here I therefore consider other methods than those available today, and particularly, I consider how these methods could be applied to wind turbines of the company Oxel. A surface where the water droplets do not attach might be the basis for a useful method. If no water attaches, no ice could form. To accomplish this a hydrophobic surface is nessesary, for example wax.
Termisk Vattenpump
This degree project aims at developing a concept for how to use solar energy to pump up water. The target audience is people living in areas where the functioning of the electricity and water network is absent. In these areas, the hand-powered water pump is the most common technology. The degree project's goal is to find an economically viable alternative to the time consuming hand-powered water pumps. The power comes from solar energy.