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- Dovic, D., et al.
(författare)
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Visualtization of one-phase flow in chevron-plate heat exchangers end their performance
- 2000
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Ingår i: Strojniski vestnik. - 0039-2480. ; 46:7, s. 429-435
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Tidskriftsartikel (refereegranskat)abstract
- Modern plate heat exchangers with chevron corrugation patterns are spread across a range of applications both in one- and two-phase flow regimes due to their compactness and superior thermal-hydraulic performance when compared to the other types of heat exchangers. Recently a limited number of experimental studies have been undertaken to understand the influence of corrugation angles and the ratio of corrugation depth to,wave length (b/l) On the flow pattern and in turn on the heat transfer and pressure drop. In order to clarify this complex issue, visualization tests have been performed on a model of a Plate heat exchanger (PHE) having only a single channel composed of one metal and one plastic transparent plate with identical corrugation.
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- Erixon Arreman, Inger, 1954-, et al.
(författare)
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Izobrazevanje uciteljev in raziskovanje : sodobne svedske perspektive v mednarodnem konteksturecent
- 2007
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Ingår i: Prispevki k posodobitvi pedagoskih studisjskih programov II. - Ljubljana : Pedagoška fakulteta. - 9789612530198 ; , s. 91-115
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- This article deals with the emergence and development of new research structures for Swedish teacher education in the beginning of the new millennium. From 2001 onwards, it has been possible to undertake research and post-graduate studies within teacher education which prior to the 2001 reform was not possible. As a result of the reform a new research discipline, Educational Work, was established in teacher education in various Swedish universities and colleges. Moreover, a national post-graduate school in Educational Work was founded, for which Umeå University, one of the larger Swedish teacher education institutions, was appointed Host University. For the article policy documents relating to teacher education and research into national, regional and local perspectives were used to explore institutional history, structures and research development in teacher education from 1946 to the present time. A micro-level perspective was further offered based on two interview studies involving teacher educators, senior managers, doctoral students and supervisors at Umeå University, including a key national representative of the major Swedish teacher union. The article draws on a variety of frameworks to explore relationships between various parts of teacher education and also more widely in the university. These include relations of power and gender based on the theoretical perspectives of Bourdieu, Foucault, Connell and Sarfatti Larson, among others. The article shows that the emergence of new research areas in teacher education in Sweden was a multilayered process involving a variety of actors at different levels at Umeå University and elsewhere. The aims of the article are to present the new research structures in teacher education in Sweden, and thereby point to the implications of the structural reform, and also to contribute to current cross-national discourses on the need to establish a research base for teacher education.
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