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2385 Uppsatser om IDA Indoor Climate and Energy - Sida 58 av 159
Simulator för el- och värmeproduktion : påverkan på ekonomi och miljö
In this project a simulator has been developed (in C++) with the purpose of illustrating how changes in environmental regulations, tax levels and other policy measures affect the composition of an energy system. The aim of the project was to investigate how energy companies? investment strategies are affected when changes in economic and environmental conditions occur. A standard scenario has been created based on current Swedish conditions, but the user can create new scenarios and set parameters freely.
The user is tasked with building power plants to supply the city/region with district heating and electricity during a pre-set number of years. When the simulation is finished
the result is graded in the following categories: economy, environment and quality.
To evaluate the simulator three scenarios were created (?early 20th century?, ?reduced environmental control? and ?future?) in addition to the standard scenario and these were compared with each other by examining how a select group of power plants perform under the given conditions.
Styrning av värmesystem i kontorsbyggnader : Jämförelse mellan prognosstyrning, styrning som utnyttjar byggnadens värmetröghet, samt traditionell styrning
En stor del av Sveriges energianvändning går till bostäder och lokaler. Ur en nationell synvinkel är energieffektiviseringar i befintliga byggnader därför en potentiellt viktig del för att kunna nå de satta klimatmålen till år 2020.I ett traditionellt styr- och reglersystem styrs framledningstemperaturen i ett vätskeburet värmesystem efter en kurva som beror på utomhustemperaturen. En del nya styr- och reglersystem tar även hänsyn till andra parametrar, såsom byggnaders värmetröghet och lokala väderprognoser. Ett exempel på ett sådant system är Ecopilot, utvecklat av Kabona. Nuvarande kunskap angående hur stor energibesparing som styr- och reglersystem med prognosstyrning och styrning som utnyttjar byggnadens värmetröghet ger upphov till består till största del av referensfall som jämför byggnaders energianvändning före och efter installationen.I detta examensarbete undersöktes hur energianvändning och inomhusklimat påverkades av prognosstyrning och styrning som utnyttjar byggnaders värmetröghet.
Varför är Bivarödsånsvatten så brunt?
The river Bivaröd is one of the river Helgeån tributaries which has the highest and the fastest increase in water colour. The reason behind this increase is unclear but several factors have been suggested to affect this pattern. In this work, I studied the role of land use, iron and precipitation for water colour increase in river Bivaröd for the period 1976 -2011. Data from a field study along with data from SRK for river Helgeån were used for the analyses. The results showed that both water colour and iron concentration increase and that there is a strong correlation between these two variables.
Implementation of renewable energy in the Republic of Moldova : society and landscape in transition
The Republic of Moldova, situated in eastern Europe and a former part of the Soviet Union, is now experiencing
a phase of transition in both society and landscape. They have hardly any fossil depots and
are currently dependent on Russian gas, with 97% of their energy needs imported. The new elected
government wants to move towards the EU and this is generally seen as the way to grow and reduce
poverty. Security in the energy sector is important and one tool is to increase the use of renewable
energy sources.
Through interviews, texts, and visits I have studied the implementation of renewable energies (RE) in
Moldova through a society development perspective. The study has aimed to investigate the sociotechnical
complexity of this subject and to discuss the potentials and way of dealing with the subject in
the specific cultural context of Moldova.
Solenergi i Norrra Djurgårdsstaden
This report will examine various solar energy technologies in order to decide if they could be applied in the Royal Seaport. The Royal Seaport is a Swedish urban district under development in Stockholm, with the goal of becoming a sustainable district. Two main techniques, solar collectors and solar cells, including sub-categories, are addressed in this report. Another sub-category, a hybrid system, will also be mentioned. The main difference between solar collectors and solar cells is the type of energy produced by the system.
Hållbarhetsredovisningens budskap : en komparativ studie av Vattenfall och E.ON
Companies today are expected to communicate their responsibility to the world around them. Society?s expectations differ and stakeholders are demanding that companies act responsibly on matters related to climate, work environment and human rights. The purpose of sustainability reports is that companies should measure, present and take responsibility in relation to their internal and external stakeholders. It is intended that a reasonable picture of the company's sustainability performance should be communicated, containing both positive and negative effects.Companies efforts with sustainability issues is industry-dependent and industries with significant environmental problems perform the most advanced environmental statement.
Bygglovsbefriad vindkraft till småhuset : -Ur ett tekniskt och ekonomiskt perspektiv
In connection with the property crises in many countries, caused by the financial crises, people are now more aware of the risks involved in poor property-investments. The unusually cold winters along with extreme prices of electricity in Sweden in recent years has also contributed to increased interest in energy-efficient buildings.The process of developing a modern family home in Kiruna, Sweden is presented the first part of this paper. The house has been designed to withstand very high stresses from snow, low energy consumption as well as a high standard of living comfort. Aspects of the house covered here involves everything from construction, heating and ventilation to sanitation. Each of these areas is presented based on their underlying, scientific methods or theories.
NEDKYLNING HOS VANLIG B?NA, PHASEOLUS VULGARIS
Beans are a global source of plant-based protein, and in some countries, they constitute a primary source of protein intake. With ongoing climate change, including rising temperatures, it is necessary to adapt beans to ensure a reliable food supply. An important mechanism that many plants have, to cope with high temperatures, is cooling through transpiration. During transpiration, stomata open and release water vapor. Water molecules use heat energy from the leaf to convert into gas, thereby cooling the leaf.
Miljöcertifierade kommersiella byggnader : Undersökning av ekonomisk ansvarsfördelning mellan hyresgäst och fastighetsägare
The Swedish commercial real estate market is in the current situation globally affected and is actively interacting with the rental and capital markets through international tenants and investors who are setting new demands on the property owners. The European Union has set new requirements as well in purpose of reducing humanity?s negative effect on the climate and therefore the international real estate market has introduced Green Building-certificates in order to decrease the real estate industry?s environmental impact.Certificated buildings with low energy consumption are a more common sight in Sweden these days. The development, however, could go even faster if there was not certain difficulties between property owners and tenants. Previous research has revealed that tenants do not always have knowledge about, or may have access to the economic benefits that a green building can provide.
Översyn av uppvärmning
The heating of companies premises is today functional with electrical heating and heating offossil fuel. The energy cost for these kinds of heating in buildings has heavily increased duringthe last years and the influence on the environment has become more visual. This leads to thatenterprises today become more anxious to render energy more effective and find alternativesolutions to their ancient heating systems. This is something that Skandinaviska kraftprodukterAB in Halmstad has become aware of.The purpose with this examination is to find the most cost-efficient and environmental measuresfor the office and workshop premises of SKP AB. Where one of the bigger things is to find agood alternative for their current oil furnace, which was heating the workshop.
Effektivare elanvändning på avfallskraftvärmeverk : Förslag till handlingsplan för minskad elanvändning på Renovas anläggning i Göteborg
This thesis has identified and studied measures to allow for reduced use of electricity in a waste incineration plant in western Sweden. The energy extracted from the waste at the powerplant is utilized and sold in form of electricity and heat. Technical and environmentally the combined heat and power plant is by today's standards among the leading waste incineration plants in the world. The owners are constantly striving to improve the efficiency of the waste incineration plant. They have seen the opportunities for savings in reducing internal usage of electricity.
Bergerosion i utskovskanaler
Today?s climate changes will probably give rise to precipitation in Sweden, which will cause more floods in Swedish rivers. Many of the Swedish rivers are regulated and have lots of hydro-electro power plants. Higher floods in the rivers will give greater water loads on the dams, which mean that a higher discharge through the sluice gates and in the spillway channels is needed. High discharge of water in a spillway channel can create scour of the material in the channel.
Utomhuspedagogisk inlärning : För elever med koncentrationssvårigheter
The overall aim with this study is to elucidate outdoor education as an education method and on the basis of that illustration to examine active educators vision on it as a way to motivate students' learning. This study is based on a literature component and a qualitative study through interviews five teachers.The results of the interviews show how to interpret the motivation and how to work with students' motivation. As well as outdoor education as part of the activity. The interviews show the importance of outdoor education can be to increase students'motivation for learning. They also show the importance of outdoor education is for student learning and test scores have shown the effectiveness of student learning through outdoor education.
Fönster mot naturen : den landskapliga infattningen av Bruno Mathssons glashus i Kosta
The main purpose with this thesis has been to study the design philosophy of Bruno Mathsson, how he worked with his houses and the landscape surrounding them and which kind of inspiration sources he had. My work started when I during the autumn 2004 got involved in an existing project related to one of his glass houses. The glass house is situated in Kosta and has during the last fifteen years suffered from so much vandalism and decay that it has become a problem for the municipality of Lessebo. The intentions are to restore the house and to transform it to a center for Swedish design, also containing a store and a café as well as hosting one apartment for scholarship students. My task in this project was to form and develop the outdoor environment in connection to the house.
Förbättrad kommunikation kan ge bättre resultat på medarbetarenkäter
En chef använder olika färdigheter i sin vardag t ex kommunikation,relationsskapande och beslutsfattande. Likväl som chefen agerar med olikaledarstilar utifrån kontexten och medarbetarna. Kvaliteten på chefensfärdigheter och agerande kan bedömas i en medarbetarenkät därmedarbetaren även bedömer sitt och gruppens välbefinnande. Enmedarbetarenkät ska vara ett stöd för chefen att utveckla sitt ledarskap ochsin verksamhet. Denna uppsats analyserar de tio bästa och de tio sämstaenheterna från en medarbetarenkät i ett landsting.