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3729 Uppsatser om Small scale hydropower - Sida 2 av 249

Avbördningskapacitet för Traryd kraftverk: en modellstudie vid dimensionerande flöde

Sydkraft Vattenkraft AB owns and operates the Traryd hydropower plant, located in the river Lagan in the southern part of Sweden. The gravity dam is classed according to RIDAS guidelines (Hydropower Industry Dam Safety Guidelines) as a class 1B dam. This means that the dam must discharge a class 1-flow which has a return period of 10 000 years. The inflow into the dam has been calculated in an earlier report to 495 m3/s, with a waterline at an elevation of 126, 3 meters above sea level. The gravity dam has a discharge system with two rectangular weirs, which results in a smaller discharge than the necessary 495 m3/s.

Environmental impact assessment of energy recovery from food waste in Singapore : comparing biogas production to incineration

As a small and land scarce country, effective waste management is ofoutmost importance in Singapore. In this study the production of biogasthrough anaerobic digestion from the organic fraction of municipal solidwaste (OFMSW) was compared to incineration of the waste. At the momentalmost all of the OFMSW in Singapore is incinerated. Three differentscenarios were compared to the reference scenario (incineration): one with alarge scale biogas plant that can treat half of all OFMSW in Singapore, onewith a medium scale biogas plant about 15 times smaller than the large oneand one with a small scale biogas plant that can treat waste from e.g. ashopping center or a food center.By using life cycle assessment (LCA) the different scenarios were comparedin terms of global warming potential (GWP), acidification, eutrophication,energy use and land use.

En enkätstudie av privata småskogsbrukares inställning till skogsbrukets certifiering

Moelven Skog AB is currently working actively to increase the number of certified forest owners in private small-scale forestry. This study was conducted in collaboration with Moelven Skog AB and seeks to learn why private small scale forest owners not yet have certified their forestry and what should be done to increase the number of certified forest owners. The study was conducted through a questionnaire study. The result of the study shows that information needs of forest certification to private small scale forest owners is great. Many non-certified forest owners have not even heard of either PEFC or FSC. The majority of respondents also have no education in forestry.

Kyckling från uppfödning till konsument : en fallstudie

The aiming with this project is to find out if a small scale chicken production can be profitable, from day-old chicks to a processed smoked product out to stores and consumers. The products will not be available in the stores all the time because we will give the customers quality rather than quantity, so when the product can?t be found in the stores the customers will ask for it. The conclusion I found out is that it might be hard to raise chickens in these scale from an economic point of view the costs for transport, logistics, slaughter and marketing are to high..

Flödesmätning i vattenkraftverk : Studie av alternativa mätmetoder

Flow measurement is one of the greatest challenges in order to calculate efficiency in hydropower. Most hydropower plants in Sweden use differential pressure methods for flow measurement. These methods are dependent on constant conditions in the waterways. A change in these conditions, like turbine improvements, prevents differential pressure methods to verify efficiency improvements. Since efficiency improvements can?t be verified by one measurement system, another method, which isn?t affected by changing conditions, can be used.

Design and performance of Small scale sensory consumer tests

Small scale internal consumer tests provide a company with a cheap way to get valuable information regarding their products advantages and flaws. Therefore the demand for possibilities to do this kind of test has increased. This report is part of a new sensory project at Unilever. It presents a method for sensory comparison of the company?s own products with the corresponding competitor products.

Flödeslogistik vid Laponia Hotel

The aim of this report is to analyse the logistics of a medium sized restaurant and give an overall solution for improvements on the restaurant's logistics. The restaurant of interest belongs to Laponia Hotel and is located in Arvidsjaur, Sweden. Investments for over 100.000 Euros are planned for the hotel, which includes a reconstruction of the restaurant. The details on how the restaurant will be reconstructed are not yet known. I therefore chose to analyse the problemin general terms and find a solution that is focused on the logistic system itself rather than its layout.

Uppgradering av biogas med aska från trädbränslen

The Swedish production of biogas was 1,5 TWh 2011. About half of the production was used as vehicle fuels. The cost for upgrading biogas depends on the size of the biogas plant and its gas production. If the gas flow is low the cost will be high. However, further development of existing upgrading technologies or development of new ones, have good potential to decrease the upgrading cost for small scale biogas plants.

Ekologisk och småskalig uppfödning av slaktkyckling och kalkon i Sverige :

In Sweden in January 2005, there is only one producer of organic broilers and none of organic turkeys. But there are, on the other hand, a few small-scale producers whose housing systems to some extent are similar to what is stipulated in the organic standards. The aims of this work are to investigate what housing systems are used by the Swedish small-scale producers of broilers and turkeys, what main challenges they are confronted with and if there is an interest and a possibility for a change-over to organic production. For the first part of this work a literature study was performed with the purpose of detecting the main health problems in conventional as well as smallscale production. A special focus was on coccidiosis and leg weakness as those were considered to be of particular importance. A study was made of Swedish small-scale poultry production units. In two groups of broilers from the same producer and in three flocks of turkeys the level of Eimeria oocysts in faeces and litter was investigated.

UML som stöd vid småskalig utveckling av ett inbyggt system

This project aims at investigating if the use of UML as a support to small-scale development ofan embedded system is relevant. The investigation is conducted by using UML during the initialphase of the development ofTelfafill, a filling machine by the company ?Telfafill AB?. The aimof the development of Telfafill is to separate the user interface from the control unit. In additionto this main objective, Telfafill AB would like possible changes to, and additions of,functionality of the filling machine to be investigated.Within the boundaries of this project, the development of Telfafill reached a full requirementspecification of the proposed system, and contact was made with potential external developers.No prototype construction had been started when the project ended.

Förutsättningar för småskalig solelproduktion i Australien

The study aims to investigate the feasibility of small-scale electricity production with solar electricity systems, also known as PV (photovoltaic) systems, in Australia. Due to the global warming, sustainable energy has in recent years become an increasingly important issue, both internationally and in Australia. With one of the largest dependencies on fossil energy sources in the world, the country's abundant solar radiation is a possible solution to this issue.Both the technical and the economic feasibility of small-scale PV systems were investigated. On the technological side, the electricity generation, distribution and consumption systems were studied. On the economical side, the parameters that drive the profitability of a PV investment were investigated.

Fruits of knowledge : a literature review of marketing strategies and mango production in Kenya

This report is a literature review that aims to describe marketing contexts for mango production in Kenya. The institutional conditions in the country are not well developed for marketing purposes, which causes many difficulties and problems for the society. In Kenya most mango producers are poor small-scale farmers with limited resources. Mango is a perishable commodity and to keep its value and quality it is essential to have the opportunity to sell the mangos in the right time. Inefficient and undeveloped infrastructure and marketing systems hinders the mangos to reach the market in time though, which causes large losses of produce.The Kenyan mango production has increased during the last decade but due to market losses for the producer, the small-scale farmers? profits have not improved.

Mikroproducenternas påverkan på Elinorr

The Swedish energy system will be influenced by many future changes, such as energy and climate policy objectives. The installation of more renewable electricity could increase by using solar energy. Over the recent years, grid-connected photovoltaic (PV) systems have increased dramatically in Sweden, partly due to various support systems and compensation models. These support systems have been designed to make it easy for individuals and businesses to invest in self-generated electricity and thus contribute to the transformation of the energy system.The introduction of a higher proportion of solar energy may in turn affect the Swedish electricity system. This could mean that the electricity companies will be facing a number of changes in the near future.

PLUG-IN : small scale design process

This degree project is a realization of a strategy for collaboration between an industrial designer and employed workmen of a producing company. The collaboration aims to engage everyone involved in the co-authorship of a products design and manufacturing history. The realization has taken place in an open dialogue where the designer no longer owns the design process by himself. The project has been carried out in cooperation with the company Iris Hantverk. The company is owned by the Swedish body for visually impaired and has their main production facility in Stockholm.

Informella sittplatser i det offentliga stadsrummet : applicerat på gråbrödersplatsen, en ny plats i Lund

This thesis is about informal seatings, those which are planned to merge into the city core environment and to supply a flexible public space. The thesis discusses how a diverse range of elements could result in different functions and social meanings. These are illustrated with visual examples and conceptual drawings. The position of the seating in a small public place is important, as well as its location in the city. Furthermore, the detail design of the seating, such as the form and dimensions have to be considered in order to create an informal seating appropriate for the user. This leads to the broad scope of this thesis which deals with the small scale - how the seatings can create a good environment in a small place; and the big scale - how a site can influence the city. This thesis suggests the physical design of some informal seatings and also investigates how these seatings can strengthen the place through their function and how they relate to their surroundings.

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