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| 2. |
- Backman, Erik, et al.
(författare)
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The Changing Landscape of Sport Facilities : Consequences for Practitioners and the Environment
- 2023
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Ingår i: Sport, Performance and Sustainability. - London : Routledge. - 9781003283324 - 9781032254630 ; , s. 50-65
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Bokkapitel (refereegranskat)abstract
- The environmental impact of sports facilities has received increasing attention over the last decades. However, studies within this area primarily deal with how the actual construction of sports facilities affects the environment. We know far less about how an active presence in sports facilities influences sporting practitioners’ thoughts about their own environmental impact. Therefore, this chapter critically discusses environmental issues connected to sports facilities generally and more specifically in relation to artificial sports facilities. We use several theoretical concepts to discuss the current research with examples taken from the artificial landscapes of cross-country skiing, canoe slalom, and turf-based sports. What makes artificial sports facilities especially interesting from an environmental perspective is the ambiguity they involve. On one hand, the actual constructions involve direct interventions in nature. On the other hand, there is a lack of knowledge about the impact these facilities have on health, environmental awareness, and travel. We argue that future sports facilities will need to stimulate more logic than competition if sport and outdoor recreation is to be environmentally sustainable. The process of sportification, which has prioritised the growth of sport economies and encouraged ever higher performance levels, would need to shift its focus to incorporate environmental concerns.
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| 3. |
- Danielski, Itai, 1973-, et al.
(författare)
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Design för energieffektiv vardag : Slutrapport projekt DEVA-skolor
- 2021
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Dålig inomhusmiljö i grundskolor i Sverige verkar vara ett problem i många kommuner. I det här projektet har man tittat på om en installation av en stor mängd växter i ett klassrum skulle kunna ändra på det. Det finns nämligen forskning om visar att vi mår, både fysiskt och psykiskt, bättre om vi är omgivna av växter. Fysiskt för att de kan rena luften och omvandla koldioxiden till syre. Dessutom ökar de luftfuktigheten och reglerar temperaturen. Psykiskt kanske för att vi är en del av naturen och har levt i den största delen av mänsklighetens historia. Växter kan också skapa bättre akustik i rummet genom att absorbera ljudvågor. Dessutom finns det tidigare studier som visar att växterna kan öka både koncentrationsförmågan och minnet.Projektet hade tre olika perspektiv; design, miljö och hälsa. Platsen för projektet var en grundskola belägen i ett mindre landsbygdssamhälle i norra delarna av Sverige. Totalt installerades 350 gröna växter i fyra växtställningar, dessa fördelades sedan på två olika klassrum med ca 25 elever ur årskurs 8 vardera. Ett liknande klassrum (åk9) bredvid dessa användes som referensobjekt. Växtställningarna designades av industridesignstudenter på Mittuniversitetet och skulle resultera i fungerande prototyper med automatisk bevattning. Projektet pågick under två terminer, höstterminen 2019 och vårterminen 2020.Mätningar av inomhustemperaturen visade att de gröna växterna bidrar till en mer stabil temperatur och till och med kan öka temperaturen något, vilket kan användas för att minska värmebehovet. Effekterna på luftfuktighet var endast högre i klassrummen med växter under natten när ventilationsflödet var lågt. Koldioxidnivåerna i klassrummen med växterna var 10 % lägre under undervisningstiden jämfört med kontrollklassrummet vilket indikerar att gröna växter skulle kunna användas för att minska ventilationsluftflödet och därigenom minska värmeenergiförluster. Energiberäkningen visade upp till 18% minskning på uppvärmningsbehovet. Mängden luftburna partiklar var redan låg och man kunde inte se någon förändring efter installationen av växterna.I början uppskattade både lärare och elever att de hade fått ett “grönt klassrum”. Minnet och koncentrationsförmågan hos eleverna blev bättre. I mätningen ett halvår senare hade dock effekten avtagit. Det är svårt att säga om detta berodde på hemmablindhet, Covid 19-pandemin (som hade brutit ut en månad tidigare) eller för att det var problem med några av bevattningssystemen som gjorde att vissa växter vissnade. Kanske en kombination.Resultaten av det här projektet kan ge kunskap och inspiration till kommuner och skolor om hur de kan förbättra inomhusklimatet med växter som ett kostnadseffektivt komplement till befintliga ventilationssystem som också kan förbättra elevernas och lärarnas prestationer och välbefinnande. Det är värt att notera att den här studien genomfördes på landsbygden där det redan är en bra luftkvalitet. Därför vore intressant att genomföra en liknande studie i ett storstadsområde men sämre luftkvalitet och även i andra med typer av byggnader med lägre ventilationsflöde.Det är också värt att notera att när projektet befanns sig i halvtid inträffade en pandemi, covid-19, som gav en betydande påverkan på både många samhällsfunktioner och för många människor. Detta kan ha påverkat resultatet av effekterna i mätningarna av hälsa och koncentration.
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| 4. |
- Danielski, Itai, et al.
(författare)
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Effects of Green Plants on the Indoor Environment and Wellbeing in Classrooms : A Case Study in a Swedish School
- 2022
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Ingår i: Sustainability. - : MDPI. - 2071-1050. ; 14:7
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Tidskriftsartikel (refereegranskat)abstract
- Many schools in Sweden lack a proper indoor environment due to, e.g., poor thermal-envelope properties, overcrowded classes, poor visual appearance and insufficient ventilation. This study aims to explore the integration of a large number of indoor green plants into classrooms’ environments. This case study consists of three parts: measurements of the indoor environment including a final energy model, a questionnaire to the pupils with questions about their well-being and qualitative interviews with teachers. The case was two classrooms in a secondary education facility in central Sweden with an average annual temperature of 3 °C and a long and dark winter period with snow. The results showed 10% lower CO2 and slightly higher and more stable temperatures due to the green plants. Worries about climate change and war among the pupils decreased after several months with the plants and worry about infectious disease increased. The teachers experienced fresher air from the plants and used the plant stands for a flexible classroom design. The conclusion is that indoor plants have the potential to contribute to a better indoor environment, but due to the high number of uncontrolled variables (including the effect of COVID-19) in measurements of real-life conditions, more studies are needed.
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| 5. |
- Danielski, Itai, 1973-
(författare)
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Improving indoor comfort in elementary school environment in North of Sweden with green plants ‐ experimental study
- 2021
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Ingår i: Accelerating the progress towards the 2030 SDGs in times of crisis. - Östersund : Mid Sweden University. - 9789189341173 ; , s. 1214-1214
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Konferensbidrag (refereegranskat)abstract
- Poor indoor environment in primary schools in Sweden seems to be a problem in many municipalities in Sweden. In a report from the Swedish Public Health Agency, it is estimated that 40 percent of schools have complaints about air quality. The causes of the problems are poor ventilation, high humidity, changes that where made to the buildings, and high density of pupils in the classrooms. Improving indoor air by improvement of ventilation systems can be too costly for municipalities. In this project, we have looked at whether an installation of a large number of green plants in classrooms could change that, and even reduce energy use. There is research that shows that we feel both physically and mentally better if we are surrounded by green plants. Physically, because they can purify the air and convert carbon dioxide to oxygen. In addition, they increase the humidity and regulate the temperature. Mentally, perhaps because we are part of nature and have lived in it most of human history. The case study in this project was an elementary school located in a small rural community in the northern part of Sweden. A total of 350 green plants were installed in four plant‐stands distributed in 2 different eighth grade classrooms with about 25 students in each. A similar adjacent classroom (ninth grade) was used as a reference object without green plants. The plant‐stands were designed by industrial design students at Mid Sweden University and would result in functional prototypes with automatic irrigation. The project lasted for two semesters, the autumn semester 2019 and the spring semester 2020. Measurements of the indoor temperature showed that the green plants contribute to a more stable temperature and can even increase the temperature slightly, which can be used to reduce the need for heat. The effects on humidity were only higher in the classrooms with plants during the night when the ventilation flow was low. The carbon dioxide levels in the classrooms with the plants were 10% lower during education time compared to the control classroom, which indicates that green plants could be used to reduce the ventilation air flow and thereby reduce heat losses from exhaust air flow. The amount of airborne particles was already low and no change could be observed after the installation of the plants.
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| 7. |
- Fogelström, Frej, et al.
(författare)
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A review of possibilities and challenges of pit thermal energy storages in Swedish district heating networks
- 2024
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Ingår i: ISEC 2024. - : AEE – Institute for Sustainable Technologies.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The use of pit thermal energy storages (PTES) enables higher solar fraction in district heating networks by counteracting the mismatch between heat demand and production in solar district heating (SDH) installations. Capital costs linked to land areas with site-specific geological conditions are the deciding factors for PTES constructions. This study investigates non-technical and technical factors for the implementation of PTES in Swedish district heating networks. Having several SDH and PTES installations in operation the country of Denmark is used as a reference. This study, based on literature review, discusses the drivers and challenges for the use of PTES in district heating networks.
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| 8. |
- Forsström, Stefan, 1984-, et al.
(författare)
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Collecting Indoor Environmental Sensor Values for Machine Learning Based Smart Building Control
- 2021
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Ingår i: IoTaIS 2020 - Proceedings. - : Institute of Electrical and Electronics Engineers Inc.. - 9781728194486 ; , s. 37-43
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Konferensbidrag (refereegranskat)abstract
- This research presents a solution for collecting indoor environmental sensor values and how the gathered sensor values then could be used for green building certification and in turn also machine learning based smart building control. We have created and implemented a proof of concept system consisting of a sensor collecting device using off the shelf hardware to complement the existing sensor information from buildings, as well as a cloud system for persistently storing this data for later usage. We have measured and evaluated our implemented system for our envisioned scenarios. In which we could observe that our proof-of-concept could scale to handle almost four sensor value updates per second at maximum stress, as well as having a latency for uploading a sensor value from our sensor of about 130 ms. Finally, we present our future and ongoing work based on these results which outlines our work for smart building control, green building certification, and the energy signature of buildings.
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| 9. |
- Haller, Henrik, 1977-, et al.
(författare)
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Towards a Resilient and Resource-Efficient Local Food System Based on Industrial Symbiosis in Härnösand : A Swedish Case Study
- 2022
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Ingår i: Sustainability. - : MDPI. - 2071-1050. ; 14:4
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Tidskriftsartikel (refereegranskat)abstract
- The endeavour to align the goals of the Swedish food strategy with the national environmental quality objectives and the 17 global SDGs, presents an extraordinary challenge that calls forsystemic innovation. Industrial symbiosis can potentially provide the means for increasing sustainable food production, using locally subexploited resources that can reduce the need for land, agro-chemicals, transport and energy. This case study of the municipality of Härnösand, aims to assess opportunities and challenges for using waste flows and by-products for local food production, facilitated by industrial symbiosis. A potential symbiotic network was developed during three workshops with the main stakeholders in Härnösand. The potential of the COVID-19 pandemic to instigate policy changes, behavioural changes and formation of new alliances that may catalyse the transition towards food systems based on industrial symbiosis is discussed. The material flow inventory revealed that many under exploited resource flows were present in quantities that rendered them commercially interesting. Resources that can be used for innovative food production include, e.g., lignocellulosic residues, rock dust, and food processing waste. The internalised drive among local companies interested in industrial symbiosis and the emerging symbiotic relations, provide a fertile ground for the establishment of a local network that can process the subexploited material flows. Although there are multiple challenges for an industrial symbiosis network to form in Härnösand, this study shows that there is a significant potential to create added value from the region’s many resources while at the same time making the food system more sustainable and resilient, by expanding industrial symbiosis practices.
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| 10. |
- Mikaelsson, Lars-Åke, et al.
(författare)
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Sustainable building engineering by blended learning
- 2020
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Ingår i: IOP Conference Series. - : Institute of Physics Publishing (IOPP).
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Konferensbidrag (refereegranskat)abstract
- The sustainable building engineering education at Mid Sweden University has since it started 1994 a strong focus on sustainable building. It is also committed to be a pilot case for blended learning. All courses in the building engineering program were from the autumn 2012 adapted to a blended learning concept. That means that all courses are available in an integrated mix of ordinary campus and online distance education in real time. Blended learning is a way of taking in account different needs concerning student study situation. Adult students, bound with house and families, often prefer more distance education while younger students need more campus education. The results of the case study show that blended learning attracts more students, and allows students with different backgrounds to study and gives a more solid base of students for the program. It also allows a more flexible way of allocating resources by integrating two previous modes of delivery for the same program. This provides an education with a well thought through quality assurance. Another strength of blended learning is the possibility to connect individual students to a larger collective of students, making it possible for them to relate to and learn with and from others by social interactions that are difficult to achieve in solely online education. The pilot case is so far limited to the sustainable building engineering program but in a next stage the concept is planned to be spread to other engineering programs and other education programs at Mid Sweden University.
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