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Academic literature on the topic 'Energibehov'
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Journal articles on the topic "Energibehov"
Hvidt, Martin. "Kinas nye energisamarbejde." Udenrigs, no. 2 (June 1, 2005): 23–26. http://dx.doi.org/10.7146/udenrigs.v0i2.119628.
Full textErsgard, Karen Bagger, and Preben Ulrich Pedersen. "Energibehovet hos patienter med kronisk obstruktiv lungelidelse — et litteraturstudie." Nordic Journal of Nursing Research 31, no. 1 (March 2011): 21–24. http://dx.doi.org/10.1177/010740831103100105.
Full textDissertations / Theses on the topic "Energibehov"
Bergkvist, Adam. "Mobil bergkrossning : Energibehov och emissioner." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-64268.
Full textGustavsson, Amanda, and Denise Tell. "Understenshöjden – En undersökning av områdets energibehov." Thesis, KTH, Energiteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170885.
Full textUnderstenshöjden is an eco-village that has the vision to be environmentally friendly and ecological. The village uses environment-friendly energy sources such as pellets and solar heating with district heating as complement if the others are not enough. The houses are, compared to today’s standard not very energy efficient. Energy has become a major part of the ecological question, and therefore it is desired to decrease the total energy demand and, if possible, to find better energy solutions. This Bachelor of Science thesis discusses a study of the building envelope and solar panels in Understenshöjden and the option geothermal heating as an energy source. The aim of the study was to develop suggestions of how the total energy demand could be reduced by decreased heat loss through the building envelope. The aim was also to examine how well the existing solar energy is used today and how geothermal heating could be a complement to the energy sources available today, from both energy and economic point of view. Currently the apartments in Understenshöjden have a solar panel on each rooftop, mounted with a slope of 27 degrees from ground level and PV-cells on the roof of the community house. These have been examined whether they are optimally used and the result shows that it is possible to extract more energy if they are mounted with a slope of about 40 degrees from ground level facing south. Geothermal is a renewable energy source and works in a way that heat is retrieved from the ground and used for heating of the house and its hot water. Calculations have been made on whether it is possible to install geothermal heat pumps in Understenshöjden. These calculations show that a geothermal heat pump can be installed to cover the need for four apartments. In that case the investment would be repaid within 10 years thanks to that the energy price of geothermal heating is cheaper than the energy price for pellets and district heating in combination. A study has been made of the building envelope with a Blower Door, which measures the apartment’s infiltration at a negative pressure of 50 Pa, and an infrared camera that measures temperature differences on surfaces by means of infrared radiation. By using the results of the Blower Door measurements and the IR images, models of two standard apartments in Understenshöjden have been developed in the program DesignBuilder. These reality models have been adjusted to represent the apartments in reality through a simulation in Design Builder that takes in account a variety of data such as geography, number of residents, living habits and many other aspects. After the reality models where developed the IR images was examined to locate thermal bridges in the building envelope. Through this, new models where developed to explore possible improvements to reduce the thermal bridges, to achieve a reduction in energy demand. These improvements are sealing of windows and front doors, exchange of windows, filling of insulation and additional insulation in exterior walls.
Hammarqvist, Sofia, and Jesper Andersson. "Kontroll av Energibehov och val avVentilationssystem för Radhusmoduler." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Byggnadsteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-28032.
Full textSyfte: Då nya lagar och skarpare regler tillträder är det inte alltid lätt att uppnå målenför energianvändning. Energieffektiva byggnader är det som gäller för framtiden ochvi har valt att granska de faktorer som kan tänkas påverka radhusbyggnadersenergianvändning. Vidare ställs det krav på vad man använder för ventilationssystemför en byggnad och viktigt att ha i åtanke vid val av ett sådant system då är attbyggnaden klarar kraven. Målet med studien är finna samverkande faktorer förhushåll i radhus gällande energi samt välja välfungerat ventilationssystem för dessa.Metod: För att nå våra mål har vi utfört dokumentinsamlingar, dokumentanalyser,intervjuer, litteraturstudier och beräkningar.Resultat: Formfaktorn är något som påverkar en byggnads specifikaenergianvändning. Vi fick svar på att bland annat upp till max fem radhusmoduler ivårt fall kunde byggas ihop och efter det kommer formen inte påverka specifikaenergianvändningen relativt mycket.Effekten av att ha ett gemensamt ventilationssystem är fördelaktigt jämfört med att haett enskilt system. Det enskilda systemet har nästan samma outnyttjade kapacitet ochskillnaden är endast 0,001kW men fördelen ligger i att specifika energianvändningenminskar med 0,04 kWh/m2 år vilket visar på att gemensamma systemet ändå är merfördelaktigt i jämförelse mellan de energimässiga effekterna. Även gällande kostnadför de olika ventilationssystemen så är det gemensamma mer fördelaktigt.För olika jämförelse mellan det enskillda och gemensamma ventilationssystemetgällande kostnad, specifik energianvändning när fastighetselen är medräknad och attde klarar kraven för kapacitet för eftervärmaren samt luftflödet så väger resultatet inmot att välja gemensamma FTX-systemet.Konsekvenser: Det är inte lätt att upprätthålla de regler och lagar som finns dåkraven blir skarpare och hårdare för nyproduktion av husbyggnader. För att kunnaupprätthålla ett bra arbete när energianvändning av en byggnad granskas är det viktigtatt därför ha koll på vad som gäller via att studera lagar, normer och de krav somfinns. Flera faktorer granskas såsom formen av byggnaden som påverkarenergianvändningen. Vidare är det viktigt att välja ett ventilationssystem eller andrainstallationer som verkligen klarar de krav som finns och inte väljer ett för enkeltsystem.Begränsningar: Vi har inte valt ett värmesystem för byggnaden och inte hellerberäknat punktköldbryggor. Dessutom har material som valts för byggnaden inteförändrats och inte heller formen av byggnaden. Verkliga värden på hur den specifikaenergianvändningen blev i verkligheten kommer inte samlas in för en jämförelse medteoretiskavärden.Nyckelord: ventilationssystem, specifik energianvändning, effektbehov, formfaktor,FTX, radhusmodul, radhus, energibehov.
Bodö, Linn. "En skogsträdgårds potential att täcka en människas närings- och energibehov." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-30507.
Full textHållbar livsmedelsproduktion i Sverige – att odla och äta från perenna system
Wigermo, Mikael, and Lucas Norlander. "En lokals energibehov : Jämförelse och modellering av olika typer av klimatsystem." Thesis, Linnéuniversitetet, Institutionen för bygg- och energiteknik (BE), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-26250.
Full textThe thesis focused on compiling a calculation model suitable for calculating an indoor climate system energy demand and life cycle cost, LCC. The model was created in Excell and uses given input data to calculate the results. The model was used to compare four different premises located in buildings owned by VIDEUM AB in Växjö. Two offices and two lecture halls was compared. The calculated differences in energy demand could be derived to longer operating times during weekends for one system. One office had a large constant air flow even during absence which also led to a greater energy demand. Whether the system was regulated by using carbon dioxide concentrations or temperature as indicators on air quality didn’t seem to affect the energy demand significantly. Unnecessary high flow rates and operating times affects the premises energy demand the more.
Li, Thomas, and Malin Flyman. "Energibehov från varmvattenarmatur i bostäder : En studie om effektivisering i användarperspektiv." Thesis, KTH, Industriell ekologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-139343.
Full textThe real estate company Svenska bostäder has planned to build new student housings at Albano, just north of Royal Institute of Technology in Stockholm. These buildings have to meet demands set by the city of Stockholm, with a maximum energy consumption of 55 kWh per year and heated square meter. To establish the behavior regarding the power consumption, a survey was conducted. Using this survey the authors found areas that had a potential of decreasing the energy demand. Hot water usage and the focus areas of shower heads, time reducing measures and wash basins was chosen. The study resulted in that even if a product has the lowest energy demand it is not certain that it is the most sustainable. There are other environmental, social and economic aspects that need to be considered before deciding which product is the best from a sustainable perspective.
Andersson, Daniel. "Energiuppföljning av verkligt energibehov kontra beräknat för Hälleborgsäldreboende : Sveriges modernaste äldreboende." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-32261.
Full textIn order to reach the 20/20 goals (meaning 20% lower energy consumption until 2020) the energy requirements on buildings must get tougher and tougher. The city of Västerås has from year 2011 set its own energy requirements on all sold estates to 60 kWh/(m2,year). When the city needed to build the new Hälleborgs elderly care center, their aim was to reach this limited energy consumption. Soon, during the planning stage, they changed this requirement to 70 kWh/(m2,year) weighted energy. The reason for this was because they were using two heating systems, one was a electric heat pump and the second was district heating. Because of higher average age in the society, the need for more elderly care centers arise even in Västerås. In the spring 2015 Hälleborgs elderly care center was completed and occupied. 2 year after the building was complete, the contractor has to do an energy monitoring and see if the goal 70 kWh/m2 is reached. In this bachelor thesis all information will be tested and the aim is to try to make a energy monitoring and figure out what needs to be done to be able to performe the energy monitoring 2017. During the work the biggest problem has been to get the right information. The system that should keep all the measured data (Momentum) was found not to have the connection to the building. When we try to pick the data by hand from the building it was not complete. So the conclusion is that the building is not ready to energy monitoring jet. This is because the building needs more time to be stable and adjust the technical systems. It also needs more points of energy measurments and flowmeters in order to get the heating water consumption. In the electric system first the net owners energy meter is installed, then the building has own meters at each electric central to separate customers consumption from building consumption. When groups of energy is summarized, it is just half of the net owners consumption. This is because some of the energy in the building is not registered. One of the electric energy’s that not is registered is the commercial kitchen, but the difference is to big that it need to be evaluated what’s missed.
Åström, Ylivainio Frida. "En byggnads energibehov : En studie om energieffektivisering av en befintlig byggnad i södra Sverige." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-88243.
Full textHenning, Anton. "Jämförelse mellan vattenburet och luftburet kylsystem i kontorslokaler : Med hänsyn till energibehov och komfort." Thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-45449.
Full textÖstin, Ronny, Erik Eklund, and Christer Johansson. "Energieffektivt byggande i kallt klimat." Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-68737.
Full textThe project Energy efficient construction in cold climate is a study of six newly produced low energy buildings in the region of Umeå. Four buildings are houses and two residential buildings which are located from Sikeå up north to Nordmaling down south. The buildings have been equipped with wireless logger system for collecting data of energy performance for the entire building and for individual components of the energy system. Loggers for relative humidity and temperature have been placed in ventilation and the buildings construction shell. The later of the position of loggers have been placed in different depths of the constructions isolating shell. The purpose of this study is to investigate these buildings energy performance and what risks constructing energy efficient buildings in cold climate due to humidity. The relative humidity and temperature sensors located in the construction shell show no signs of risk for rotting and mold. Moisture migration is a slow process and to be certain longer measurements are required. With the method called energy signature the measured energy usage have been normal corrected by year and the average U-value calculated. Expected energy usage and average U-value is compared to our measured data in this report. Two buildings in the study are equipped with a buried pipe for supply air which is 36m and 10 m long. The longest (36m) shows a big increase of air temperature (from -25°C outside to +°2 at the inlet connecting to the heat exchanger). This by means no extra heat is required for the inlet air to reach comfortable temperature. The measurement of energy displays that constructing buildings with lower energy use then the Swedish Boverkets requirements are confirmed. The houses shows a specific energy usage as Boverkets definition (energy for heating and for domestic hot water per heated surface area) from 59.7 to 91.8 kWh/m2, year and the residential buildings from 68 to 75.5 kWh/m2, year which are lower than today regulations at 130 kWh/m2, year and 95 kWh/m2, year for electric heated.