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Academic literature on the topic 'Termisk komfort'
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Dissertations / Theses on the topic "Termisk komfort"
DENMAN, JERNBERG FANNY. "Termisk komfort hos sågskyddsutrustning : Om sågskyddstextilens inverkan på komforten i sågskyddsplagg." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-18016.
Full textProgram: Textilingenjörsutbildningen
Boåsen, Filip, and Stiven Khaled. "Termisk komfort med golvvärme eller luftvärme." Thesis, KTH, Byggteknik och design, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231582.
Full textWhen most people spend a larger part of the day indoors, it is important to have a good thermal comfort, as the thermal comfort affects the experience that you perceive when you are at work, at home or at school. This may then affect the health if the thermal comfort does not meet the requirements. The purpose of the survey is to investigate low temperature system performance in terms of thermal comfort and if it meets the requirements. The survey uses calculation data from previously performed surveys, as the calculations are validated by comparison with other surveys. In this survey we explore the differences between floor heating and air heating, where we look at how the different systems are compared to each other under controlled conditions regarding thermal comfort. The different systems under investigation are air heating placed on the wall, air heating placed under a window, floor heating evenly distributed over the floor and floor heating that has extra loops under windows. The study will carry out a literature study that will be based on the topic of low temperature and how the different systems work and how they can be used at low temperatures. In this survey, the operating temperature PMV, PPD and DR-index are considered to get a good idea of how thermal comfort is experienced regarding floor heating or air heating. The survey has given good results, since the difference in thermal comfort between the different systems has been minimal and fulfilled all BBR requirements. The results have been compared to previous studies of low temperature technology, as the results coincide well with minor deviations. To choose one of the four systems that have been shown superior in terms of thermal comfort, floor heating with extra loops under windows has been proven to be the better option, as PMV and PPD as well as values are below the recommendation for thermal comfort.
Sehic, Sanel. "Termisk komfort : Jämförelse mellan trä- och betongkonstruktioner." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177966.
Full textThermal comfort has a decisive role for the well-being and overall comfort for humans in indoor environments. Too often, the importance of materials is underestimated for thermal comfort and ventilation systems are overestimated, but the fact is that basic conditions for thermal comfort are mostly affected by material related factors. For example, as soon as we walk into a room, we begin to lose and gain heat to and from different material in our environment because of the radiation properties of the material. When we place a warm foot on a cooler floor, heat will flow from our foot to the material due to the thermal conductivity of the material and when fluctuations occur in the outdoor temperature, it is primarily the thermal effusivity of thematerial that determines the smoothness of the indoor temperature. The purpose of this report is to identify the properties that affect thermal comfort in wood and concrete structures, as well as to investigate to which extent these properties affecting the rmalcomfort differ between the materials. Although there is enough knowledge related to building materials to answer my purpose, there is no study that analyses and compares which characteristics distinguish between wood and concrete structures and to what extent in terms of thermal comfort. For this reason, this report will be a research and literature review, but it is unique in that it binds together building materials characteristics and thermal comfort. The building material whose properties created the best conditions for recommended thermal comfort proved to be concrete. The biggest reason is the high thermal effusivity of concrete, in other words, the ability to store heat during the day when it is warmer and release it at night when it is colder, which results in a relatively even internal temperature.
Johannesson, Fredrik. "Zakrisdals vårdboende : Termisk komfort och dess påverkan på energianvändningen." Thesis, Karlstads universitet, Avdelningen för energi-, miljö- och byggteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-28268.
Full textOlsson-Höök, Fredrik. "Utvärdering av inneklimatet på Alsters förskola : Termisk komfort och luftkvalitet." Thesis, Karlstads universitet, Avdelningen för energi-, miljö- och byggteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-33268.
Full textAlsters preschool opened its operation in October 2013. Since it is so newly built, there has been no evaluation of the indoor climate. Therefore Karlstads municipality wants to carry out this study. The study focuses on thermal comfort and air quality. Alsters preschool is built to fulfill the Forum for Energy Efficient Buildings (FEBYs) requirements for passive houses from the year 2009. If the requirements are fulfilled, then Alsters preschool will be the first preschool in Sweden to do so. Building according to the requirements for passive houses is a relatively new method of constructing a building. Passive houses seek a well-insulated, dense and energy-efficient building. Based on this study it should be possible to determine if the energy-efficient execution is affecting the indoor climate. The results will be used to determine whether preschools can be built as a passive house in similar climates and still attain the best indoor climate classes for thermal comfort and air quality. To investigate the indoor climate, measurements were made over several operation days in selected climatic factors. The air temperature, relative humidity, carbon dioxide concentration and the floor temperature was monitored throughout the operation day and the measurements were logged every five minutes. In addition to these measurements the operative temperature and air movements was examined in the premises. A survey was done with the staff as a supplement to the measurements and to get the users' opinion of the indoor climate. The results from the completed questionnaires were processed by the Department of Occupational and Environmental Medicine at Örebro University Hospital. Three suggested operating cases were developed based on the results from the measurements and the survey to improve the thermal comfort and air quality. The energy calculation program VIP-Energy where used to simulate these operating cases. The energy calculation that was made for the contract documents was a big help when the VIP-model was developed. The energy calculation from the contract documents was also compared with the measured electricity at Alsters preschool in order to determine the credibility of simulation results. The measurements and the survey show that there is good thermal comfort and air quality in Alsters preschool. However, there are some factors that can be improved. Dry air and high indoor temperatures, are those factors that get the worst results. The simulations show that the adjustments that may be implemented to achieve better thermal comfort and air quality will not increase energy usage so that FEBYs requirements for passive houses are not fulfilled. This confirms that it is possible to build preschools as passive houses in similar climates and still achieve the highest indoor climate classes for thermal comfort and air quality.
Saidzadeh, Millad. "Energimodellering av ett flerbostadshus - en parameterstudie : Granskning av energianvändning och termisk komfort." Thesis, KTH, Byggvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-123997.
Full textBuilding 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.
Wetterbrandt, Erik. "Luftburen värme, termisk komfort och energianvändning. Jämförelse av värmesystem för ett flerbostadshus." Thesis, KTH, Installations- och energisystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202584.
Full textOur society today is demanding more and more energy efficient construction of buildings. The lower the energy consumption of a build is, the less environmental impact it has. Because of this it is getting increasingly common to design buildings to meet the standard of environmental classification systems and low-energy requirements. Unfortunately it is still expensive to construct low-energy buildings. To save money, many designers are combining the heating- and ventilationsystem through so called ventilation heating systems. It is believed by many that these systems can maintain a good indoor climate for the users and still be cheap to construct and run. The goal of this study is to evaluate how well ventilation heating systems can perform with respect to energy use and indoor climate, compared to other systems. A good indoor climate consists of many things were some of the foremost are air quality and thermal comfort. To compare the different systems an apartment building in Stockholm has been modeled and simulated in the software IDA ICE. More than the simulations, a screening has been put together with the aim to evaluate how the industry views low-energy buildings and ventilation heating systems today. This study shows that it is getting more and more common to construct low-energy buildings in Sweden. That being said, it is not always the best solution. Although ventilation heating systems can perform well in theory, reality shows that's not usually the case due to exceeding maintenance and insight from all parties. After evaluating the simulations, the results indicate that the energy consumption of the ventilation heating system and the HVAC-system with radiators is almost equally good. At the same time the exhaust ventilation system with radiators and the exhaust ventilation system with floor heating has considerably worse energy consumption. We can also see that the HVAC-system with radiators and the exhaust ventilation system with floor heating provides a good indoor climate. Unfortunately the results show that the exhaust ventilation system with radiators and mainly the ventilation heating system provides worse indoor climate than the other systems. Even though the ventilation heating system can lower the installation costs during construction, these results indicate that the system provides a low energy use at the expense of the indoor climate. In addition to the four simulated heating systems, the ventilation heating system was simulated for a building designed to pass the low-energy building requirements according to FEBY. These results show that the energy consumption can be reduced even further while it has no significant improvement on the indoor climate. To summarize, this study has shown that ventilation heating systems can reduce the energy consumption in comparison with other heating systems. Unfortunately is this done at the expense of the indoor climate. This should be highlighted further while choosing heating system in low-energy buildings.
Larek, Adrian, and Jimmy Tran. "Inverkan av värmesystem på termisk komfort i ett flerbostadshus med hänsyn till energianvändning." Thesis, KTH, Installations- och energisystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170439.
Full textThe indoor climate plays a crucial role in human health and well-being when people are indoors for nearly half their life. There are several aspects to how one should achieve good indoor climate, but the more significant aspects are both good air quality and thermal comfort. Simultaneously one must regard that the reduction of energy has an important role in today’s development. While trying to reduce energy consumption in order to facilitate the environmental load, it raises the questions whether the thermal comfort is affected by this. The purpose of the report will lie in the identification of a heating system for a given apartment building in the Stockholm area, with a focus on thermal comfort and energy use. The evaluation is based on various types of impacts from various systems that have been computed in IDA ICE. A reference case for an apartment building was used as a basis and was modeled according to architectural and constructional drawings while input data was used according to Sveby. It will also include the environmental certifications used in Sweden and specify their requirements regarding the thermal comfort, and each focus area as various environmental certifications have different assessment criteria’s. During this study it was found that we rarely take into account the thermal comfort in the same way we do with the energy consumption. It has also been found that in cases where the requirements for the thermal comfort exist, it is often insufficiently defined to provide one with a good perception of comfort. The requirements do, in other words, not take into account how well a building performs during a whole year but instead focuses on one instantaneous value. For the simulation a sensitivity analysis was made that revealed the importance and necessity of a clear standard for undefined variables to express the people’s assessment of thermal comfort. After the simulation part, the energy calculations were examined according to a review template from WSP Systems. This provided a basis for fair consideration. From the obtained results it was shown that floor heating and increasing the setpoint to 22 °C gave an increased thermal comfort but at the same time an increase in energy use. An HVAC system with a heat exchanger and radiators resulted in reduced energy use by about a third from the reference case and a slight increase in current thermal comfort. It also proved that the choice of an HVAC system with heat exchanger produced the highest annual energy savings. However one must take into account installation costs for different types of systems as opposed to when the setpoint is increased to 22 °C. Thus it becomes a cost issue and a critical parameter for selecting among these three types of solutions.
Rosendahl, Karl-Magnus, and Marcus Vedin. "Varsam solavskärmning med fönsterfolie : En fallstudie som simuleras i IDA ICE avseende termisk komfort." Thesis, Högskolan i Gävle, Avdelningen för byggnadsteknik, energisystem och miljövetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-32470.
Full textChristopher, Magnusson. "Förbättrat inomhusklimat med lägre energiförbrukning i öppet kontorslandskap : Ventilationens påverkan på inomhusklimatet och termisk komfort." Thesis, Högskolan i Gävle, Avdelningen för byggnadsteknik, energisystem och miljövetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-30414.
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