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3339 Uppsatser om District Heating Production - Sida 28 av 223
Kaninen som produktionsdjur
The purpose of this report was to obtain an overview of rabbit meat production in the world, in terms of breeding and feeding. It examines how different feed components contribute to the health of the rabbit as well as the quality of the carcass, and the breeding strategies that are most common in the major producing countries. The production of rabbit meat in Sweden is at present not very large, but it is gaining ground, and that is why this paper mainly deals with the rabbit production abroad. This report also examines the disease Rabbit Viral Haermorrhagic Disease (RVHD) in Sweden, where this disease can cause big problems.
The rabbit (Oryctolagus cuniculus) is very special, both in its reproduction and digestion. There is no specific mating season and the digestive tract is designed to digest forage efficiently.
Utvecklingsalternativ för grisbesättning :
The purpose of this report was to compare two different options for expanding of an
existing pig farm. For the time being there are low prices within the agricultural market
of pig production, and it is interesting to see if it is worth expanding or not.
The two different options this report is based on are: expanding from a herd with 50
sows in breeding gilt production to a herd with 100 sows in breeding gilt production
(option 1), or expanding to a herd with 140 sows in breeding gilt production (option 2).
The number of pregnant gilts produced per year will stay the same for both alternatives;
about 300 pregnant gilts per year. The rest of the breeding gilts will be sold at a weight
of 25 kg. The pigs that are not sold as breeding gilts (e.g. castrates, and female pigs that
are too small or that have disorders) will be kept on the farm as growing-finishing pigs
until 120 kg of live weight, and then sold to the slaughter house.
By using the existing buildings, even after the expanding, the investment costs, and
thereby costs for housing, were kept as low as possible.
Ekonomin under omläggningsåren vid övergång till kravgodkänd produktion :
The purpose of these theses is to show the financial economical situation during the change from conventional dairy production to ecological production. The thesis is accomplished by collecting information from literature and interviews where needed.
The target group of these theses is dairy producers who will transform their production from conventional dairy production to certified ecological dairy production. The theses emphasise on the economic situation during the adjustment years. For this I have studied a presently producing dairy farm.
Röst och hörselnedsättning : Akustisk analys av röst hos sju hörapparatsanvändare
A number of studies have been made to examine several aspects of voice production in individuals with different types of hearing impairments. Most of the studies were made to explore the impact that hearing aids have for people with severe or congenital hearing impairment. So far it has been confirmed that there are changes regarding voice production in these individuals. A group that has not been investigated regarding voice production to a larger extent are hearing aid users with an acquired hearing impairment. In the present study the voice production of seven individuals, four men and three women, with a moderate acquired hearing impairment is examined.
Kvällens sista beställning: från Kungsgatan till akuten : En studie om effekten av Ansvarsfull alkoholservering på krogvåldet i centrala Karlstad
This thesis represents my individual final research in Societal Risk Management. The aim of the study is to research whether the method called Responsible Beverage Serving has had the desired effect of diminished alcohol-related violence in Karlstad City, after its implementation into the ordinary operational agenda for Karlstad district in the county of Wermland. According to the method, the alcohol-related damages as well as alcohol-related violence in a society can be reduced by refusing to serve minors and clients who are excessively intoxicated.In order to be able to reach the aim of the thesis, the subsequent questions must be answered;Has excessive drinking reduced in the bars and clubs in Karlstad City?Has it become more difficult for minors to be served alcohol in the bars and clubs in Karlstad City?Has the police reported amount of assaults outdoors diminished regarding the alcohol-related violence in Karlstad City?This research is an intervention study and uses a quasi-experimental design. The intervention itself is the method called Responsible Beverage Serving.
En jämförelse ur energisynpunkt mellan roterande värmeväxlare och frånluftsvärmepump i universitetsbyggnad
För att tillgodose den studerande KTH byggnadens framtida krav kommer det befintliga ventilationssystemet att bytas ut. Två olika möjliga värmeåtervinningssystem har jämförts ur fjärrvärmebehovssynpunkt. Det befintliga systemet med vattenburen batterivärmeväxlare har en låg värmeåtervinningsgrad och Akademiska Hus önskar system med högre värmeåtervinning. I byggnaden har roterande värmeväxlare och frånluftsvärmepump för uppvärmning av tilluften jämförts. Då värmeåtervinning från dessa system inte är tillräckligt kommer fjärrvärme att används.I beräkningarna jämförs fem roterande värmeväxlare mot varierande antal frånluftsvärmepumpen.
Torrefaction of biomass : a comparative and kinetic study of thermal decomposition for Norway spruce stump, poplar and fuel tree chips
Stump biomass is energy rich and stump harvesting for use as fuel become more and more
interesting in Sweden. Swedish Forest Agency (2009) has estimated that stump harvesting in
Sweden would respond to an annual energy supply of 57 TWh/year. However, stump has not
been recognized as a bioenergy resource in Sweden. Suitable methods for pre-treatment of
stump are probably of great importance to make it accepted as fuel. It is therefore rewarding
to carry out an investigation in this area for stump.
This report represents results from a diploma project, which was aimed to develop a fixed bed
reactor for experimental study of biomass torrefaction, followed by TG analysis and kinetic
modelling employing Ozawa method and different kinetic models including one-step and
three-pseudo-component models.
Vilka statsfinansiella effekter erhålls vid ökad produktion av förnybar energi?
BackgroundThis paper is based on an issue raised by the organization Energigas Sverige, which together with the Ministry of Finance has posed the question about the fiscal impact of an increase in biogas production. Since the fiscal effects of an increased biogas production are both positive and negative, due to reduced use of fossil fuels, we want to investigate this further.PurposeThe purpose is to describe and explain the obtained fiscal impacts of an increased biogas production and based on our problem: ?What are the obtained fiscal effects caused by an increase in biogas production?? we could see the following fiscal effects: positive impact on employment, increased revenues of social security contributions and income taxes, reduced unemployment costs and reduced tax revenues on fossil fuels. These effects are summarized in a negative tax revenue of 2,6 billion SEK. Along the summarized negative effect we also accepted one of the two prepared hypotheses, which stated that an increase in biogas production leads to a negative fiscal impact. Design/Methodology/ApproachWe have chosen to work from an Anglo-Saxon scientific tradition and furthermore, we have a positivistic approach when we want to explain the relationship between cause and effect of an increase in biogas production and the following fiscal impacts.
Analys av verkstadsplaneringen : på Fläkt Woods i Jönköping
This paper is finishing part of the two-year master programme in Industrial Engineering and Management.Initially there was an inquiry of studying the queue-times that Fläkt Woods uses when they break down internal working orders. These times were assumed to be too generalised and does not apply to the actual value of the queue-times which generates incorrect data and delivery delays. During the work of this paper it has been established that it is not the queue-times that is the biggest problem. The problem is the shop floor control and the lack of manufacturing the right products at the right time. Therefore an analysis of the production planning process was made to bring forward the real problems.
Barns idrottande ur ett socioekonomiskt perspektiv
In the society there is different kind of people that belongs to different groups. The different groups that people belong to are depending on where you live, grow up, ethnic group, level of education and which economic standard you have. The subject of our composition is about children and teenager growth environment and about what society they belong to and how it affects their possibility to exercise. Our composition is built from the question:
Are there any differences connected to exercise in an association compared to spontaneous exercise based on economic standard and what district of the city you live?
To be able to find an answer to our question we have chosen to concentrate on three districts in the city of Helsingborg.
Att ta vara på solens fulla uppvärmningskapacitet
The purpose of this bachelor´s report is to expand the knowledge about heat supply of a small house in Malmö. The heat supply will be provided from solar panels in combination to two accumulator tanks which will storage the up heated water and a pellet boiler.The technique used here is warmth storage in water over seasons, which will provide the total need of heating for the house. Accumulator tanks in combination to solar panels gets more and more common in Sweden but this far it´s unusual to use it for storage over seasons. This report will highlight many of the difficulties associated whit heat storage and give information about a system's possible design and function.The design of this system is decided early on. An accumulator tank is placed 2 meters down in the earth on the backside of the house.
Utvärdering av möjligheten att tillvarata energi ur processvatten : En undersökning gjort vid Olofsfors AB på uppdrag av UMIA AB.
The company Olofsfors AB manufactures drive belts for forest machinery, known as ECO-Tracks, and abrasion-resistant steel and cutting edges for graders, excavators and tractors, known as Bruxite and SharqEdges. Manufacturing these products requires the steel to be heated and molded, then submerged in water and hardened. The water used in the hardening of steel is pumped to the process from pits below the floor and then pumped back to the pit after it?s been used. Since the temperature of this water rises after being used to harden the steel the temperature of the pumping pit needs to be adjusted to maintain its setpoint of 21°C.
Spillvärmeåtervinning ur kylvattensystemet ismältverket på Sapa Profiler AB i Sjunnen
The smelting process at Sapa Profiler AB in Sjunnen generates large quantities of waste heat which is absorbed by the cooling water when the aluminum is cooled down. This paper is the result of a Master?s Degree Project aiming to present the conditions for recycling the waste heat. The cooling water absorbs the heat from the aluminum at an average rate of 600 kW and the paper shows that it can be used to replace electrical power consumption for heating the production plant?s facilities.
Specialpedagogens funktion - andra yrkesgruppers perspektiv
The purpose of this study is to achieve a greater understanding of the perception of the use of Special Educational Needs Coordinators? (SENCOs?) competence in school. The informants of this study are the director of the school district, two principals and six teachers in two schools in a municipality in Sweden. The method used for this study is qualitative interviews, and the results have been analyzed using perspectives on special education. The results show that the director of the school district has one ideal view of SENCOs working close to the principals with supervision of teachers, school development, administrative tasks etc.
10 kamp i fjärrvärme : Hur ett befintligt fjärrvärmesystem kan bli mer effektivt
Fjärrvärmen utgör idag ungefär 12 % (48 TWh) av Sveriges totala energianvändning. Starka argument att använda fjärrvärme för att tillgodose bostäders och lokalers värmebehov är möjligheten att använda olika bränslen av skiftande pris och kvalitet, den goda verkningsgraden en centraliserad värmeanläggning erhåller samt fördelen med att kombinera produktionen av el och värme.Halmstad energi och miljö (HEM), förser Halmstad och närområdet med fjärrvärme och total mängd producerad energi uppgick 2009 till 596 GWh. Avfall och biobränsle utgör den största produktionsandelen men även industriell spillvärme samt mindre mängder olja och naturgas används för att framställa värme.Konkurrenssituationen för fjärrvärme är på många orter i det närmsta monopolistisk där en stor aktör äger hela marknaden. Det är viktigt att förbättra fjärrvärmesystemet för att i framtiden behålla dess konkurrenskraft. Följande rapport utreder och beskriver åtgärder för att göra ett redan befintligt fjärrvärmesystem mer effektivt.Utifrån möten med personal på HEM har tio punkter presenterats, vilka utvärderar olika delmoment i Halmstads fjärrvärmesystem.