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  • 1.
    Akrawi, Kahi
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Sharif, Vina
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Tätningsmetoder av tunnlar för skydd av installationer: En studie baserad på litteratur, intervjuer och tidigare arbeten.2016Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
  • 2.
    Azar, Marc
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    The influence of energy use visualization on the energy consumption in municipal multi-apartment buildings: The case of Nynäshamnbostäder2012Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis investigates the influence of energy visualization on hot water consumption, as well as

    builds up the framework for the analysis of electricity consumption, of multi-apartment buildings

    in Sweden, . 115 apartments in Nynäshamn have been scheduled to be equipped with feedback visualization,

    through the use of television sets, allowing the monitoring of electricity and hot water

    consumption on a monthly basis. One year of consumption data prior to this feedback introduction

    was acquired for statistical analysis. The results were then displayed and analysed, allowing

    for the composition of a generalized conclusion whilst revealing the need for further investigation

    and future work.

    To achieve this end, clustering was performed on the 115 apartments according to the following

    characteristics: Number of tenants per apartment, Area of the apartment, Location of the

    apartment, and age of the tenants. Principal Component Analysis was used to select dominant

    characteristics, through eliminating highly correlated components, after which trend analysis was

    performed on each of the separate clusters revealing a seasonal change model.

    Finally, a Multivariate Analysis of Variance utilized on the paired clusters to identify any significant

    change, along with post-analysis tests to specify the groups in which significant change was

    detected, is presented to be applied in future work.

    The preliminary results clearly show that the characteristic data can be grouped into three distinct

    clusters of which the consumption trend of hot water consumption is distinct. Moreover the

    data reveals a correlation between the apartment’s characteristics and its hot water consumption.

    However further monitoring and data collection will be required before any strong trend can be

    identified, as well as power analysis will have to be applied to conclude any significant change.

    Nonetheless the initial results demonstrate promising signs that ought to be further investigated in

    the future.

    2

  • 3.
    Azrak, Munira
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Leakage Through Outside Walls2004Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 4.
    Berglund, Anna
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Langels, Bengt
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Solar energy as electricity supply at primary health centres - Case studies of primary health centres in Sudan - A Minor Field Study2007Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 5.
    Brorsson, Martin
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Danielsson, Erik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Vätskekopplade värme- och kylåtervinningssystem Utveckling av ett verktyg för energiberäkningar2013Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    According to a decision of the European Commission, measures are to be taken to reduce the use of energy in the EU. The goal is to reduce it by 20 % compared to the current use. This shall be done to the year 2020 (European Commission, 2011). One industry that use large amounts of energy is the construction of buildings which account for almost a third of the energy use (Brogren, 2012). The major part of the energy that is used in the construction industry is not used when the buildings are built, but rather during the rest of their subsequent lifetime. There is a great potential to save energy by reducing the energy that is used to maintain a satisfactory indoor climate. Recovery of excess heat and excess cold is a solution that the European Commission think has the biggest potential to reduce the total energy consumption.

    The most common system used for energy recovery is air to air heat exchangers connected with the supply air and the exhaust air. For different reasons it is not possible to use this kind of system in several buildings. If that is the case there is a possibility to use a liquid coupled recovery system instead. If an additional source of excess heat or excess cooling exist within the building, or nearby, it is also possible to connect this to the system which would increase the ability to save energy even more.

    The purpose of this thesis has been to develop a tool for energy calculations in liquid-coupled recovery systems. This tool has been developed in the program IDA ICE (used for energy calculations) and has made it possible to perform dynamic simulations in this kind of system over the timeframe of a whole year and with a very short calculation time. The tool is flexible in terms of its components and system design so it can be used for several different types of projects. Everything from simple systems with fixed brine flow with only one supply air and exhaust air unit to systems with several units, various types of control possibilities and an addition of excess heat from, for example, a room containing computer servers.

    The tool that has been developed has been verified and used to calculate the potential to save energy in a system that is installed at the Ångström laboratory in Uppsala. The tool has shown that with the kind of control and the conditions that currently exist at the laboratory the energy consumption could be reduced by 444 MWh which in this case almost is 50 % of the current energy consumption. Besides the recovery system in Ångström two more systems have been investigated, a server room for The Royal Institute of Technology and the server halls that Facebook is building near Luleå town. The investigation shows that there exist very large amounts of heat that is possible to recover in buildings that include server rooms and that the installed recovery systems, if there are any, in many cases could be improved.

    Besides constructing recovery systems that recover heat or cold in buildings it is also possible to build this kind of system that recover heat or cold between buildings in the same area. The tool can also be used to investigate how such a system should work in order to minimize the use of energy as much as possible. A solution where heat and cold is recovered between multiple buildings is a solution that probably will be very interesting in the future, which means that this tool could come in handy.

  • 6.
    Brorsson, Martin
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Danielsson, Erik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Vätskekopplade värme- och kylåtervinningssystem: Utveckling av ett verktyg för energiberäkningar2013Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    1          

    According to a decision of the European Commission, measures are to be taken to reduce the use of energy in the EU. The goal is to reduce it by 20 % compared to the current use. This shall be done to the year 2020 (European Commission, 2011). One industry that use large amounts of energy is the construction of buildings which account for almost a third of the energy use (Brogren, 2012). The major part of the energy that is used in the construction industry is not used when the buildings are built, but rather during the rest of their subsequent lifetime. There is a great potential to save energy by reducing the energy that is used to maintain a satisfactory indoor climate. Recovery of excess heat and excess cold is a solution that the European Commission think has the biggest potential to reduce the total energy consumption.

    The most common system used for energy recovery is air to air heat exchangers connected with the supply air and the exhaust air. For different reasons it is not possible to use this kind of system in several buildings. If that is the case there is a possibility to use a liquid coupled recovery system instead. If an additional source of excess heat or excess cooling exist within the building, or nearby, it is also possible to connect this to the system which would increase the ability to save energy even more.

    The purpose of this thesis has been to develop a tool for energy calculations in liquid-coupled recovery systems. This tool has been developed in the program IDA ICE (used for energy calculations) and has made it possible to perform dynamic simulations in this kind of system over the timeframe of a whole year and with a very short calculation time. The tool is flexible in terms of its components and system design so it can be used for several different types of projects. Everything from simple systems with fixed brine flow with only one supply air and exhaust air unit to systems with several units, various types of control possibilities and an addition of excess heat from, for example, a room containing computer servers.

    The tool that has been developed has been verified and used to calculate the potential to save energy in a system that is installed at the Ångström laboratory in Uppsala. The tool has shown that with the kind of control and the conditions that currently exist at the laboratory the energy consumption could be reduced by 444 MWh which in this case almost is 50 % of the current energy consumption. Besides the recovery system in Ångström two more systems have been investigated, a server room for The Royal Institute of Technology and the server halls that Facebook is building near Luleå town. The investigation shows that there exist very large amounts of heat that is possible to recover in buildings that include server rooms and that the installed recovery systems, if there are any, in many cases could be improved.

    Besides constructing recovery systems that recover heat or cold in buildings it is also possible to build this kind of system that recover heat or cold between buildings in the same area. The tool can also be used to investigate how such a system should work in order to minimize the use of energy as much as possible. A solution where heat and cold is recovered between multiple buildings is a solution that probably will be very interesting in the future, which means that this

  • 7.
    Chaneac, Jean
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Integrated analysis of bioclimatic building design in three climate zones in France2012Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    ABSTRACT

    At a time where the planet is facing one of its major global crises, re-thinking of systems in every sector is needed. In the field of energy at its global meaning, various ways of action are considered. In this context, housing sector represents a key point of new conception of our society. Nowadays buildings are no longer considered only as designed housing "objects". Comfort, consumption, environmental impacts are part of the words which appear utterly linked to every single building. Thermal behaviour tends to be as much important as architectural and structural concerns. Indeed, energy savings have become one of the most talked about parameters of a building. Through this paper, key parameters of a building will be compared in order to obtain the most effective houses depending on their location. Nevertheless, comfort will be studied too because of its increasing importance in modern society. The results will be obtained according various aspects: technical ones, environmental ones and financial ones. For all those houses meeting the French standards, similar comparison will be made. Thus the approach will not be organised one house after another but through the impact of one parameter after another to draw the final comparison between the three houses according to the same parameters.

    Keywords: energy consumption, CO2 emissions, sustainable systems, bioclimatic buildings

  • 8.
    Clément, Paul Francois
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Building energy retrofitting: from energy audit to renovation proposals: The case of an office building in France2012Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Abstract

    The built environment is responsible for 40% of the global energy demand (1). To reduce building energy consumption, regulations are enhancing the appeal of sustainable constructions. Nevertheless, the rate of construction is low in most of developed countries. Efforts are to be made in existing buildings, namely in office buildings, which are statistically more energy-consuming than residential buildings (3). To conduct an adapted energy retrofitting, an energy audit can be realized as a pre-study. The first step is to realize an inventory of fixture of the building equipment. From that analysis, the building behavior and consumption are modeled with the help of dynamic simulation software. A comparison with the real life energy consumption guides the study to obtain a model close to reality. Energy retrofitting plans can then be created, based on this model and on the inventory of fixture phase. If technically adapted, each retrofitting solution is evaluated in terms of investment cost and energy savings. Building energy audits and recommendation phases are not unique and normalized procedures. More advanced and complex calculations and measurements can improve the result accuracy. Nevertheless, the introduced approach gives a first understanding of a building, by analyzing its strengths and its weaknesses. As a result, the proposed retrofitting solutions are suited to each specific building. This renovation plan can then be used as a first-decision making tool for the various stakeholders included in the retrofitting project.

    Abstract

    The built environment is responsible for 40% of the global energy demand (1). To reduce building energy consumption, regulations are enhancing the appeal of sustainable constructions. Nevertheless, the rate of construction is low in most of developed countries. Efforts are to be made in existing buildings, namely in office buildings, which are statistically more energy-consuming than residential buildings (3). To conduct an adapted energy retrofitting, an energy audit can be realized as a pre-study. The first step is to realize an inventory of fixture of the building equipment. From that analysis, the building behavior and consumption are modeled with the help of dynamic simulation software. A comparison with the real life energy consumption guides the study to obtain a model close to reality. Energy retrofitting plans can then be created, based on this model and on the inventory of fixture phase. If technically adapted, each retrofitting solution is evaluated in terms of investment cost and energy savings. Building energy audits and recommendation phases are not unique and normalized procedures. More advanced and complex calculations and measurements can improve the result accuracy. Nevertheless, the introduced approach gives a first understanding of a building, by analyzing its strengths and its weaknesses. As a result, the proposed retrofitting solutions are suited to each specific building. This renovation plan can then be used as a first-decision making tool for the various stakeholders included in the retrofitting project.

    Abstract

    The built environment is responsible for 40% of the global energy demand (1). To reduce building energy consumption, regulations are enhancing the appeal of sustainable constructions. Nevertheless, the rate of construction is low in most of developed countries. Efforts are to be made in existing buildings, namely in office buildings, which are statistically more energy-consuming than residential buildings (3). To conduct an adapted energy retrofitting, an energy audit can be realized as a pre-study. The first step is to realize an inventory of fixture of the building equipment. From that analysis, the building behavior and consumption are modeled with the help of dynamic simulation software. A comparison with the real life energy consumption guides the study to obtain a model close to reality. Energy retrofitting plans can then be created, based on this model and on the inventory of fixture phase. If technically adapted, each retrofitting solution is evaluated in terms of investment cost and energy savings. Building energy audits and recommendation phases are not unique and normalized procedures. More advanced and complex calculations and measurements can improve the result accuracy. Nevertheless, the introduced approach gives a first understanding of a building, by analyzing its strengths and its weaknesses. As a result, the proposed retrofitting solutions are suited to each specific building. This renovation plan can then be used as a first-decision making tool for the various stakeholders included in the retrofitting project.

  • 9.
    Ehlers, Patrik
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Tello Machaca, Tania
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Luftföroreningen trikloramin i badanläggningar: En fallstudie av Äventyrsbadet i Oskarshamn2007Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 10.
    Hallberg-Borgqvist, Jonas
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Något om inverkan av operationsrumskläder på halten luftburna bakteriebärande partiklar under pågående operation2009Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 11.
    Hillblom, Karin
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Ombyggnad av ventilationen i kulturbyggnader2010Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 12.
    Jakobsson, Mikael
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Avkylning i fjärrvärmecentraler på Södra Systemet, Stockholm2006Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 13.
    Jansson, Gustav
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Lundberg, Tobias
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Driftstrategier för Vasamuseets klimatanläggning: Analys av möjligheter till energibesparing samt en beskrivning av funktionen2005Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 14.
    Jia, Natalie
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Juntheikki, Andreas
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Energieffektivisering av lokaler.: Hur ser energieffektiviseringen ut idag?2016Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
  • 15.
    Johansson, Henrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Genomströmningstalets storlek för transportöppningar mellan renrum i farmaceutisk industri2004Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 16.
    Jönsson, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Kartläggning och utvärdering av alternativa former för uppvärmning i AP Fastigheters fastighetsbestånd i Stockholm2006Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 17.
    Lausevic, David
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering (name changed to Building Service and Energy Systems 2012-03-01).
    Klimatsmarta Hyresgäster: Potential hos hyresgästen för minskning av energianvändning i en kontorsbyggnad på ett klimatsmart sätt2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The starting point for this master thesis was the product of the company "Humlegården", which allows its tenants in office buildings to follow their electricity consumption in real time, through their Smartphone's. The idea that resulted from that application is to investigate if it is possible to direct the tenants in office buildings to reduce their energy consumptions, but also to be satisfied with the indoor environment. This work addresses the factors which are the main energy consumers in office buildings. It addresses legal requirements and standards which are important to follow in order to achieve good thermal comfort in buildings. Some of them are physical climate factors like thermal environment, air quality and lightning. Investigation has also been made on psychological, physiological and social factors which are important for human’s thermal perception. Even monitoring methods for energy and comfort have been discussed as well as methods that are used to ensure the thermal perception of human beings. Through literature studies that have been carried out in the past, especially those who determine the connection between physical and psycho-social elements, a simple suggestion has been made. The suggestion is based on indoor and outdoor temperature, that should direct the tenant to allow in some cases lower indoor temperature which will lead to minimized energy consumption.

  • 18.
    Liotsios, Kyriakos
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    3D-Modeling and Energy Simulation of a Single Family House in Southern Greece2012Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Energy usage deriving from human activities is increasing day by day acting against the quality of the environment and the sustainable use of natural resources. The major impact of these actions is reflected on the quality of daily life. In order to face the challenge of preserving an acceptable balance between human needs and environmental status, the combination of proper design and energy simulation of buildings is the key towards smarter and more sustainable solutions. Solutions that covers a respectable percentage of the current domestic energy needs without further environmental foot printing. In the scope of this project, an existing single-family house in Southern Greece (Heraklion, Crete) is modeled using Revit

    ® Architecture software and then is simulated with IES® VE (plug-in) in order to give the level of energy intensity. The energy model used is fully harmonized with the new rules set by the "National Regulation for Energy Performance of Buildings - (K.En.A.K)" as it was put in force from October 2010 and onwards, and fully complies with the European Standards (EN ISO) published for the various tasks of building`s thermal performance. The structure and contents presented in this report are in full compliance with the technical directives [31, 32, 33] published by the Technical Chamber of Greece, in favour of the complex task of "Energy Certification of Buildings". The most significant capabilities of sophisticated software tools, like Revit® Architecture, IES® VE, Polysun® and PVsyst®, in favour of sustainable building design and simulation are shown throughout the whole report. Moreover, their valuable contribution is highly acknowledged by the engineers encountered with the task of studying the energy performance of existing or newly constructed buildings in Greece and issuing, the mandatory by law, "Energy Performance Certificates".

     

  • 19.
    Marmoux, Pierre-Benoît
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Energy services for high performance buildings and building clusters - towards better energy quality management in the urban built environment2012Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    With an increasing awareness of energy consumption and CO

    2emission in the population, several initiatives to reduce CO2emissions have been presented all around the world. The main part of these initiatives is a reduction of the energy consumption for existing buildings, while the others concern the building of eco-districts with low-energy infrastructures and even zero-energy infrastructures. In this idea of reducing the energy consumption and of developing new clean areas, this master thesis will deal with the high energy quality services for new urban districts.

    In the scope of this master thesis project, the new concept of sustainable cities and of clusters of buildings will be approached in order to clearly understand the future challenges that the world’s population is going to face during this century. Indeed, due to the current alarming environmental crisis, the need to reduce human impacts on the environment is growing more and more and is becoming inescapable. We will present a way to react to the current situation and to counteract it thanks to new clean technologies and to new analysis approaches, like the exergy concept.

    Through this report, we are going to analyze the concepts of sustainable cities and clusters of buildings as systems, and focus on their energy aspects in order to set indoor climate parameters and energy supply parameters to ensure high energy quality services supplies to high performance buildings. Thanks to the approach of the exergy concept, passive and active systems such as nocturnal ventilation or floor heating and cooling systems have been highlighted in order to realize the ‘energy saving’ opportunities that our close environment offers. This work will be summarized in a methodology that will present a way to optimize the energy use of all services aspects in a building and the environmental friendly characteristics of the energy resources mix, which will supply the buildings’ low energy demands.

  • 20.
    Nilsson, Johan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Service and Energy Systems.
    Energirelevanta aspekter inom miljöklassificeringssystemen LEED och BREEAM2011Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Sammanfattning

    Syftet med denna rapport är att granska skillnaden mellan energikategorierna i miljöcertifieringssystemen LEED och BREEAM. Eftersom amerikanska LEED bygger på det brittiska BREEAM finns det många aspekter som liknar varandra. BREEAM utgår ifrån de nationella standarderna i första hand. Om sådana inte finns är det de europeiska som används. Klassningen av byggnaden visar hur bra byggnaden är jämfört med de krav som finns nationellt. Dessa är i sin tur anpassade till förutsättningarna som finns i landet.

    LEED grundar sig istället på kraven som beskrivs utifrån den amerikanska standarden ASHRAE. Dessa krav är inte anpassade till svenska eller europeiska standarder vilket gör det svårt att jämföra rakt av. Detta innebär att kraven som ställs i ASHRAE och LEED är olika svåra att uppfylla då förutsättningarna i länderna är olika. Till exempel tillhör Sverige klimatzon 6, tillsammans med Chile, Ryssland, Kanada och de nordliga delarna i USA. Detta ger olika utgångspunkter för att klara kriterierna då de naturliga förutsättningarna skiljer sig i olika länder.

    För att bedöma om en byggnad är energieffektiv behövs någon typ av verktyg för att verifiera byggnaden. För svenska företag som vill visa att de är miljömedvetna och vill ha låga energikostnader behövs någon typ av märkning av byggnaden. Även utländska företag på svenska marknaden letar efter byggnader med bra energieffektivitet som har ett intyg på att byggnaden följer hårda miljö- och byggnationskrav. Det är då en stor fördel att använda stora internationella system som exempelvis LEED och BREEAM som intygar att byggnaden uppfyller de hårda kraven som finns i systemen. Det indikeras med olika certifieringsnivåer beroende på hur väl byggnaden uppfyller kraven.

    Dessa miljöcertifieringssystem används för att påvisa att byggnaden uppfyller höga krav, men även för att öka eller behålla värdet på byggnaden jämfört med andra likvärdiga byggnader som inte är certifierade. Detta är påtagligt för byggnader med hyresgäster som har som företagspolicy att hyra byggnader med en viss nivå av ett miljöcertifieringssystem eller bara är intresserade att hyra byggnader med låga energikostnader. Om byggnaden inte skulle vara certifierad minskar andelen potentiella hyresgäster och priserna pressas och byggnaden riskerar att stå outhyrd en tid vilket kostar stora summor i stora byggnader.

    Respektive systems energikategori anses viktigast i båda systemen och det är framförallt reduceringen av energianvändningen som spelar en avgörande roll, även användandet av förnyelsebar energi är en viktig del. Generellt i båda systemen sker liknande ställningstaganden i de flesta frågorna för att reducera byggnaders påverkan av miljön, genom olika förbättringsåtgärder. Sporren för att göra byggnaden bättre är att minska miljöpåverkan, sänka driftkostnaden, öka trivseln, förbättra driften och att uppnå en hög certifieringsnivå.

    Generellt fås en uppfattning av att BREEAM är enklare att använda än LEED, eftersom den utgår från kraven i BBR. Båda systemen räknar ut en procentuell förbättring eller anger att uppställda värden uppfyllts. Exempelvis räknas reduceringen av koldioxid och energieffektivisering ut procentuellt. I LEED ska även ASHRAE användas utöver BBR och beräknar energieffektivisering utifrån reducering av kostnaden i dollar jämfört med referensbyggnaden.

  • 21.
    Nyberg, Thomas
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Funktionskontroll av installationssystem via DHC med hjälp av Pia2004Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 22.
    Nykvist, Anders
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Värmeåtervinning ur spillvatten i befintliga flerbostadshus2012Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Drain water heat recovery is an uncommon measure in multi-unit residential buildings. There is

    technology available for the purpose but the knowing and experience of the heat recovery systems is

    little. The purpose of this thesis is to evaluate the future potential of drain water heat recovery in

    multi-unit residential buildings.

    A major part of the multi-unit residential buildings in Sweden were built during modernismen and

    rekordåren (1940

    1975). Many of the buildings have worn out drain and water supply systems and

    many are in need of a general refurbishment. If drain water heat recovery is considered for a building

    it is suitable to install the recovery system at the same time as the refurbishment to minimize the

    installation cost.

    Existing heat recovery systems consist of heat exchangers, heat pumps or a combination of both.

    There are passive heat exchangers that are placed close to the shower, on the vertical drain pipe and

    on the horizontal drain pipe. Recovery systems comprising heat pumps are more complicated and

    space demanding. They are rarely suited for multi-unit residential buildings but have the potential of

    recovering more heat from the drain water.

    In some buildings, where heat recovery systems have been installed, the performance of the systems

    has been measured. The measurements show that passive heat exchangers can recover about 10

    15 % of the hot water energy consumption, not including standstill losses and hot water circulation.

    Calculations indicate that the energy savings for passive heat exchangers could be 20-25 %. If several

    kinds of heat exchangers are combined the energy savings could be almost 40 %. Recovery systems

    with heat pumps could generate even larger energy savings, between 50

    70 %. However, with heat

    pumps the electricity consumption increases and that has to be considered in profitability

    calculations. When developing new heat recovery systems the emphasis should be on energy storage

    and reactivity since most taps are short and unpredictable.

    In a technology procurement there should be demands on energy effectiveness. Based on experience

    from installed heat recovery systems and calculations the following is suggested:

    The buildings heating and hot water energy consumption must decrease with at least 15 %

    of

    the current hot water energy consumption.

    The buildings heating and hot water energy consumption should decrease with at least

    20 %

    of the current hot water energy consumption.

    Furthermore there should be demands on profitability. The present value of future energy savings

    ought to exceed the investment cost and the present value of future costs of the system within a

    period of time. The following is suggested:

    The condition must be fulfilled within

    20 years

    The condition should be fulfilled within

    15 years

    iii

  • 23.
    Palmquist, Erik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Jämförelse mellan uppmätta och stimulerade temperaturer i tre bostäder sommartid2009Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 24.
    Perslow, Johan
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Skogberg, Peter
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Jämförelse av beräkningsmetodiker för komfortkyleanvändning2008Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 25.
    Petersson Blomberg, Tomas
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Partikeltransporter i konvektionsströmmar2006Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 26.
    Romano, Francesco
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Theoretical aspects on environmental monitoring in pharmaceutical cleanrooms2006Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 27.
    Said, Aras
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Energianvändningesskillnader - identiska hus2008Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 28.
    Saidzadeh, Millad
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Energimodellering av ett flerbostadshus  - en parameterstudie: Granskning av energianvändning och termisk komfort2013Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Building stock consumes 40 % of total energy usage in Sweden, dwellings contribute almost

    30% of the proportion. With an interest on the parametric analysis and its corresponding energy

    saving potentials, the investigation on the sensitivity of selected building parameters in

    a typical Swedish slab house is performed in the study. Based on the identification to the

    behavior of target sensitive parameters, the upgrading potential of thermal comforts is

    comparably analyzed with respect to approach the optimization design of further retrofitting

    scenario and uncertainty guidelines. A slab house built after 1970 is selected as the represented

    case building with a detailed typology introduction. In the study, IDA ICE 4.5 is applied to

    perform both the energy simulation and thermal comfort estimation. Based on the local screening

    analysis and the setting of criterion system, the ranking of the target parameters is rated

    systematically. The study is meant to be useful for the presentation of energy saving potentials

    and consideration of input parameters on energy calculations, and increase understanding of how

    thermal comfort is affected by various parameters.

    The results show that accomplished with the transformation of F-system to FTX-system, the

    applicable ventilation system efficiency shows the largest energy saving potential and improved

    thermal comfort, and the indoor temperature shows the largest sensitivity to the total energy

    profile. Comparably, along with the indoor temperature, the performance of glazing system in

    terms of the g-value is recognized as the parameters with the highest consideration. Based on the

    sensitivity analysis, the correlation between the energy savings and thermal comfort upgrading is

    verified, which indicate the possibility of providing optimal design scenario

    for both architectural error guidelines and further building retrofitting.

  • 29.
    Schramm, Fredrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Erfarenhetsbaserad uppskattning av energiprestanda - ett komplement till energimodellering i kontorsbyggnader2012Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Detta examensarbete behandlar en utredning om möjligheterna att genom syntetiska erfarenhetsvärden från ett energisimuleringsprogram kunna uppskatta energiprestandan i en kontorsbyggnad. Energisimuleringsprogrammet som använts är Integrated Environmental Solution Virtual Environment.

     

    En känslighetsanalys har genomförts för att undersöka vilka parametrar som har störst påverkan på energianvändningen. Uppvärmningstemperatur, kylningstemperatur, värmeväxlareffektivitet, WWR (fönsterandel sett till total väggarea) samt uteluftsflöde gav störst utslag och de har därför undersökts vidare. Dessa parametrar har i grupper om tre kombinerats på ett bestämt vis och vidare analyserats med fyra olika regressionsmodeller. De två mest intressanta regressionsmodellerna har genomgått flertalet kontroller för att säkerställa deras giltighet. Undersökningen visar att polynomiska regressionsmodeller ger den bästa beskrivningen av energianvändningen i en kontorsbyggnad. För att skapa en mer allmängiltig modell beträffande olika byggnadstyper krävs någon form av geometrisk parameter. Vid användandet av ett fåtal rörliga parametrar kan en väldigt exakt uppskattning av energianvändningen åstadkommas, men vid införandet av fler parametrar försämras uppskattning.

     

    Utifrån de tidigare nämnda undersökningarna har erfarenhetsvärden beräknats för att uppskatta vad en viss förändring av en parameter ger för förändring av energianvändningen. Undersökningen visar att det finns möjlighet att ta fram erfarenhetsvärden, men att de varierar beroende på valet av andra ingångsparametrar, omkringliggande byggnader och byggnadens geometri. De parametrar som gav bäst resultat var uppvärmningstemperatur som vid en grads förändring förändrar energianvändningen med 11 ± 5 procent och WWR som vid en förändring på 1 procent ger en förändring av energianvändningen med 1,0 ± 0,5 procent.

     

  • 30.
    Sipilä, Davy
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Något om luftrörelser och partikelspridning i parallellströmning med tillämpning på operationsrum2006Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 31.
    Stellnert, Henrik
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Utvärdering av Frånluftsgardin2008Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 32.
    Sundström, Stefan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Luftburna partiklar i BFS-fyllningsrum2005Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 33.
    Svensson, Anna
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Inneklimat vid luftburen värme: Utvärdering av en kontorsbyggnad2010Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
  • 34.
    Thorstenson, Johan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Services Engineering.
    Hybridventilationssystem i Synergihuset2008Independent thesis Basic level (professional degree), 20 credits / 30 HE creditsStudent thesis
1 - 34 of 34
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