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21644 Uppsatser om Building information model - Sida 11 av 1443
Demonstrationsprojektets roll i framväxten av ny teknik: Fallstudier av två vindkraftprojekt
This report describes a synchronous machine model with magnetic saturation in d-axis, neutralconnection and electrical exciter interface for the transient simulator PSCAD/EMTDC. It hasbeen designed and verified in comparison to the regular machine model in EMTDC.The performance of the model is very good when incorporating a linear as well as a saturatedmagnetising inductance. The dynamic deviation is only thousandths to ten thousandths perunit. By using a cubic interpolation of the saturation curve, the model gives a good representationof the saturation effect. The open source code implementation of the synchronousmachine model gives the possibility to easily adapt the model to specific requirements.The derived model makes it possible to simulate a synchronous machine with its excitationsystems, e.g.
3D PDF
This report is about Adobe Acrobat 3D and their new PDF format witch can contain 3 dimensional models that are interactive. The purpose is to find out if the program and the format work in a level that is suitable for the market. To create this PDF you need Acrobat 3D installed on your computer but it only needs Acrobat Reader 7 or 8 to open it, and the Reader is free to download on the internet.The examination is focusing on four formats: U3D, 3DS, DWG and DXF because they are the most common in the building industry seen from the architects? way. From a 3D model exported to these four formats they where converted to PDF in different settings to be compared in different points as information and size of the files.
Allas bibliotek? En fallstudie om tillgänglighet utifrån exemplet Sundsvalls stadsbibliotek
The aim of this master?s thesis is to examine the accessibility for persons with disabilities to service, materials, and the library building in one Swedish public library, and also to see what guides the development of accessibility at this library. In order to do this we have studied guidelines and political documents to se how this library responds to them. To our case study, data have also been collected by qualitative interviews, and observation of what this library offers impaired persons at the library?s web site, in special materials, facilities, and the functionality of the library building.
Modellering av en panna med rörlig rost :
The aim of this master thesis was to create a dynamic model for the processes in a solid fuel boiler of the moving grate type. Another aim with the model was to keep it as simple as possible but still able to catch the dynamics of the processes in the bedplate of the boiler. The creation of the model had its origin from drying and combustion equations used in earlier modeling work of boilers. The represented model has been used to simulate different kinds of disturbances in a boiler and different ways to control the boiler. These tests show that controlling a number of parameters in the bed of the boiler is an effective way to keep the grate stable during disturbances.
Leveranslogistik på byggarbetsplatsen
Problem: How do delivery logistics work in practice at the building site?
Where are the big problems? How to make building logistics more
effective? Do the site management and the haulers agree about
questions concerning both parties? What is possible to gain by
using better logistics? Is it possible to gain time with better
logistics and by that reducing the costs?
Purpose and aim: The purpose is to discover if there are any disagreements between
the site management and the haulers. If disagreements occur they
will be examined and probable measures based on the problems
will be suggested. Another intention is to bring key ratios
concerning time spent for deliveries forward. One aim is to update
a similar report made in 1972.
Bosnien en studie av OHR statsbyggande
This essay examines the international communitys intervention in Bosnia. The purpuse i to give the reader a deaper understanding of the problems appeared in re-building the bosnianstate. Office of the higher representive (OHR), was to become the koordinator of therecontruction of the institutions and governance. The theory used fore the examination isstate-building, whith an alingnment of state-building trough the international community.The second part of the essay examine the ideas of the High representive (HR) trough threedifferent dimensions. The idea-analysies search to present the core of ideas of OHR, nationalparties and the reconstuction of media.
Inventering av processvattenbalans : fastställande av fjärrvärmedistributionens läckage inom Vattenfall Värme Uppsala AB
Heat is distributed to the district heating customers through pipes with water as a heat carrier. The district heating system is complex. To decide what is leakages from the district heating net versus what is the water consumption of the plant, is difficult.
Therefore, the purpose of this master thesis is to establish a model where the district heating net?s leakages but also the water consumption of the plant can be followed
daily. The project is performed at Vattenfall´s district heating power plant in Uppsala.
Information is gathered through discussions, drawings of the plant and guided tours of the plant.
Adaptiv katalysatormodell för reglering
This master?s thesis describes the development of a model of the catalystsystem aiming at control by an MPC. A well functioning model, which is suitable in control purpose, is important while emission legislation become more and more hard to fulfill for the car manufacturers. Much research has been done in the field of physical modeling of the system, but in this work a linear adaptive time discrete ARX-model is developed and validated.The systems tendency to change its dynamic during usage implies that the model must be adaptive. The developed model proved to be well functioning and shows promising conditions for the MPC design.
Framtidens kongresshus : Stadsbyggnadsvisionen i Jönköping
Since a couple of decades the community of Jönköping has worked out an urban vision of how the city should be appropriated expanded. The prospect extends to around year 2040 and deals with the area south of lake Munksjön in Jönköping, Sweden. Today there is a proposal of how this would look like and what main public functions that should be located there. One issue in the so-called urban vision 2.0 indicates a congressional building. This report describes how such an object can be designed according to the urban vision conditions.The work is focused on three main themes;* Architectural concept and a modern form of expression.* A functional attractive congress building in a new planned town centre.* General concept of a realistic structure system that meet the spatial and architectural possibilities.Various concepts in the meeting industry and in the architecture field are identified in order to understand the concepts and ideas with today´s congress buildings.
Framtiden för gamla Habo ullspinneri
This report presents an investigation and a new design of Habo Ullspinneris old industrial premises. It is based on the owners visions and wishes, two questionnaires and also considering of the historical value.Habo Ullspinneri was founded in 1882 by Frans August Johansson and was moved to the location it has today, near Hökån in Habo, three years later. The electricity that the machines in the industry needed was extracted from the small river that is placed under the building. In 1960 there was a fire and the result became the end of the industrial activity that had taken place in the building.There is no steady activity in the building at the moment. It is nowadays temporarily used as an agriculture museum and as a store room.
Energieffektiviserande åtgärder i samband med renovering av flerbostadshus
In Sweden, a big part of the energy use is used in the housing sector. Political goals and targets are set up which the housing sector needs to work towards. Apartment buildings are a major part of the housing sector in Sweden and therefore reduction of energy use in these kinds of buildings are key to lower the energy use in Sweden. But there are not only political incentives to reduce the energy use. Some energy?saving measures are directly profitable and should thus be performed.
Konstruktion av current conveyors via makromodellering
A current conveyor is an active building block that can be used to implement most active and passive components. It differs from the operation amplifier in that it uses current instead of voltage. The current conveyor also has significantly higher voltage gain over a broader frequency range. To simplify the construction of analogue circuits and increase the construction efficiency it is desirable to use a top-down methodology. This means that the whole system is partitioned into a hierarchy of subsystems.
Modell för dimensionering av AGV-system inom tung industri
Interest in the implementation of AGV-systems (Automated Guided Vehicle) has in recent decades increased. The reason is that it allows companies to perform reliably and secure internal transport while reducing the need of personnel. It is one of todays most advanced and complex material handling system that can independently make their own decisions regarding flow paths and traffic control. An AGV-system consists of transport units carrying cargo from point A to point B, and communicates using a computer.The purpose of this study is to develop a model on how to proceed in order to design an AGV system in heavy industry. The model is tested by a case study of a company in the metal industry to determine if the model works and gives the correct result.
Renovering av flerbostadshus - en studie om energieffektivisering och lönsamhet
In today?s society a large focus is put on energy systems and how our energy systems are built up. In order to make sure that we in the future still can enjoy the living standards that we are used to today, Sweden and EU have made a number of decisions on making our energy system more energy efficient and consequently reduce the usage of energy resources. By 2020 the European Union should have reduced its energy consumption by 20 % compared to 1990?s level, and by 2050, 50%.
Go Down Arts Centre : Nairobi, Kenya
The Go Down Arts Centre is a proposal for a new building to an existing organisation in Nairobi, Kenya. The proposal relates to the scale of the city by making a statement on a future urban path, and by welcoming the city in to the building. The proposal houses both activities affiliated to Go Down, such as studios and rehersal rooms, as well as opportunities for the visitor to meet and interact with the culture produced at Go Down, both in formal and informal settings. The building is closed to its surroundings, apart from a grand entrance towards the urban path. There, the city passes through the building to an inner courtyard, where the communication to all the rooms and activities takes place.