| 1. |
- Almusaed, Amjad, 1967-, et al.
(författare)
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CDIO Initiative on Student Engagement by Effective Syncretic (Lectures – seminars)
- 2022. - 1
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Ingår i: Proceedings of IHSES 2022, International Conference on Humanities, Social and Education Sciences, Los Angeles, USA. - USA : ISTES Organization. - 9781952092336 ; , s. 249-261
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Konferensbidrag (refereegranskat)abstract
- New trends such as globalization, the knowledge economy, and the information technology revolution have become essential factors affecting the development of universities in the new era. These trends have profoundly impacted the survival and growth of universities. First, universities need to shoulder the knowledge creation work in many fields related to human survival and development in the era of the knowledge economy. Secondly, they must adapt to the influence of the technological revolution on human knowledge acquisition methods and change traditions. I will further explore the new requirements for talents in the new era and adjust our talent training concepts, values and models. How universities respond to challenges through operational changes and explore new models of higher education in line with social development in the new era is a topic that universities worldwide need to consider. The study aims to create an effective model to improve the interaction between the lectures and seminars objectives and activities based on CDIO standards 3 and 8. The integrated curriculum and active learning are crucial for improving future students' engineers' skills.Consequently, students will participate efficiently in the learning process. The study will focus on the concept of a "student-centered" learning environment based on the active learning model by using the research to create effective student engagement in the learning process. The work's positioning, goals, and learning model promotes the improvement of the student's engagement and learning mode in this context, pay attention to the course-student interaction in the process, stimulates students' learning initiative, and promote the teaching reform of participating colleges. The study aims to Increase the students' work and outcome towards creative results.
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| 2. |
- Brunzell, Lena, 1979-
(författare)
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Energy Efficient Textile Drying
- 2006
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Traditionally, textiles were dried outdoors with the wind and the sun enhancing the drying process. Tumble dryers offer a fast and convenient way of drying textiles independent of weather conditions. Tumble dryers, however, consume large amounts of electrical energy. Over 4 million tumble dryers are sold each year in Europe and a considerable amount of energy is used for drying of clothes. Increasing energy costs and the awareness about environmental problems related to a large energy use has increased the demand for dryers with better energy efficiency. The aim with this thesis is to show how to improve the energy efficiency of domestic tumble dryers.Two types of tumble dryers are available on the market today: the open cycle dryer and the closed cycle dryer. In the open cycle dryer room air is heated and led into the drying drum. The exhaust air leaves the dryer and is often evacuated outside the building. In the closed cycle dryer an internal airflow is recirculated inside the dryer. When the hot air has passed through the drying drum it is led through a heat exchanger where the water vapour is condensed before the air is heated again and led to the drum. The heat exchanger is cooled with room air.Drying at low temperature has been shown to reduce the specific energy use for an open cycle tumble dryer. In Paper I a correlation between the specific energy use, the drying time and the heat supply was established for a specific load by using the exhaust air temperature. It was shown that the total drying time and specific energy use could be predicted from data during the first hour of the process. This result indicated a possibility to create a control system that makes it possible for the user to choose between low energy use or short drying time.The focus of Paper II is to reduce the energy use for a closed cycle tumble dryer. Energy and mass balances were established in order to determine feasible improvements. Energy and mass flows in the dryer indicated that reducing leakage from the internal system of the dryer gave the largest reduction of specific energy use. Insulation of the back cover of the dryer and opening the internal system during the falling drying rate period also gave positive results on the energy use. In total a feasible reduction of the energy use of approximately 17% was calculated.
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| 3. |
- Brunzell, Lena, 1979-, et al.
(författare)
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Recommendations for revising the energy label system for dishwashers : Supporting sustainable development and usage through the interaction of energy labels, technical improvements and consumer behaviour
- 2019
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Ingår i: Energy Efficiency. - : Springer. - 1570-646X .- 1570-6478. ; 13:1, s. 145-155
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Tidskriftsartikel (refereegranskat)abstract
- Historically, domestic chores such as washing dishes were all done by hand. Today it is estimated that 44% of the households in the EU are equipped with a dishwasher. In this article, we discuss the connections between technical developments, consumer behaviour and the test standard for energy labels. The aim of this study is to provide recommendations for future work that would strengthen the role of the energy label in order to promote the more sustainable technical development of household appliances. Technical developments are compared with the consequences of different consumer behaviour. It was found that technical developments could reduce annual energy use, but depending on the implemented technology, this is often complex and requires additional components. On the other hand, a consumer can easily increase energy usage by 50% without being aware of doing so, when goods are pre-treated, appliances incorrectly loaded, or inappropriate programs selected. Our recommendation is first of all to encourage the use of dishwashers as they consume less energy and water compared with washing up manually. A holistic approach should be taken to updating the energy labelling system. Actual consumer behaviour must be taken into account and, perhaps most importantly, as dishwashers are becoming ever more energy efficient, consumers must be educated in using the machines in an environmentally friendly way. We conclude that the energy labelling system is outdated; it must be fundamentally revised and must take into account consumer behaviour.
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| 4. |
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| 5. |
- Brunzell, Lena, 1979-, et al.
(författare)
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Utformning av aktiva pedagogiska möten i en kurs med flippat lärande
- 2018
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Ingår i: Studentaktiva lärande- och examinationsformer. - Karlstad : Karlstads universitet. - 9789170638695 - 9789170639647 ; , s. 21-34
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Att använda flippat lärande i undervisningen har blivit mer och mer vanligt i högre utbildning. Studier pekar på att den formen av undervisning leder till ökad förståelse, ett ökat engagemang och motivation hos studenterna. Dock finns ett uttalat behov av ytterligare forskning inom området. I denna studie ligger fokus på hur de pedagogiska mötena i en typisk teknisk grundkurs kan utformas för att vara aktiva och främja lärandet i de högre kunskapsnivåerna. Den nya utformningen bygger på att traditionella möten med studenter såsom föreläsningar och lektioner har bytts ut mot diskussionstillfällen och laborationer. Räkneövningar finns i båda upplägg men fokus i det nya ligger i att arbeta med koncept och hur problem ställs upp. Den operativa räkningen lämnas alltid till studenterna. Resultaten blir att lärarna idag kan möta studenterna och agera som en coach i deras lärande, studenterna är mer aktiva och vi arbetar med kunskapsmål där vi analyserar, kritiskt utvärderar, utformar system och gör avvägda antaganden. Genomströmningen har ökat från mellan 40-50% till mellan 60-70% trots ett ökat krav på förståelsen i examinationen.
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| 6. |
- Renström, Roger, 1960-, et al.
(författare)
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En introduktion för att studenter ska utveckla egna strategier för skrivandet
- 2018
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Ingår i: Studentaktiva lärande- och examinationsformer. - Karlstad : Karlstads universitet. - 9789170638695 - 9789170639647 ; , s. 93-108
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- I högre utbildning är akademiskt skrivande något som studenter behöver stöd att utveckla genom hela sin utbildning. Handledningen är en central del i denna process men det finns en risk att handledaren i stället för att lyfta halvfärdiga texter i själva verket drar ner studenter eller lämnar otydliga synpunkter. Det finns även en risk att handledaren över skrivarbetet och gör det till sitt.Vi arbetar med en handledningsmodell som vi kallar ”Direkthandledning”. Modellen ger stor frihet för förändringar och stora delar avutbildningsmiljön arbetar med liknande modeller. Drivkraften är att göra handledningen effektivare, att öka studenternas respons för lärarnas synpunkter samt ge studenterna egna strategier för sitt skrivande. Direkthandledningsmodellen används i hela utbildningen och i denna artikel presenteras introduktionen. I handledningsmodellen separeras innehåll och form. I introduktionen handleds enbart formen, hur rapporten är formaliserad, strukturerad och skriven.I direkthandledningsmodellen får studenten alltid en tydlig process och kravspecifikation på vad som förväntas. I introduktionen genomförs en individuell studie och först när studenten skrivit en inledning, metod och resultat som är i läs- och kommentarbart skick, får studenten handledning. Texten skall då följa en utskickad och kommunicerad mall och struktur. Återkopplingen utgår från kravspecifikationen. När studenten kommer till handledningen har handledare och student en diskussion kring hur arbetet är presenterat, inget annat. Under handledningen får studenten tydlig information om hur denne ligger till i förhållande till kravspecifikationen.Modellen har lett till betydande förbättringar av responsen på synpunkter. Studenter uppger att de börjat utveckla egna strategier för sitt skrivande.
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| 7. |
- Renström, Roger, 1960-, et al.
(författare)
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Energy performance of an industrial superheated steam heat pump flash dryer for drying of bio-fuel
- 2018
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Ingår i: IDS'2018. - Valencia : University Politecnica Valencia. - 9788490486887 ; , s. 1495-1502
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Konferensbidrag (refereegranskat)abstract
- Drying is an energy demanding industrial process and methods for reducing the energy consumption of drying is of interest to industry as well as society. This article presents the drying system of a biofuel factory. Steam is used as the refrigerant. Superheated steam is used as drying gas in a flash dryer with 28.8 tons/h dewatering capacity. The system includes an energy recovering water heat pump that receives its heat from the excess drying steam and heats the dryer. The SMER of the drying process ranges between 3 and 4 and the COP of the heat pump process ranges between 4 and 5.5 during one production season of peat drying. Variations in performance can be explained by variations in inlet moisture content and production rate. The example of this drying system shows the feasibility of drying in superheated steam, heat pump drying and water as refrigerant in high-temperature heat pumps.
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