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Sökning: LAR1:cth > Högskolan i Gävle > Linköpings universitet

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1.
  • Arghand, Taha, et al. (författare)
  • An experimental investigation of the flow and comfort parameters for under-floor, confluent jets and mixing ventilation systems in an open-plan office
  • 2015
  • Ingår i: Building and Environment. - : Elsevier BV. - 0360-1323 .- 1873-684X. ; 92, s. 48-60
  • Tidskriftsartikel (refereegranskat)abstract
    • There is a new trend to convert the workplaces from individual office rooms to open offices for motivating money saving and better communication. With such a shift the ability of existing ventilation systems in meeting the new requirements is a challenging question for researchers. The available options could have an impact on workers' health in terms of providing acceptable levels of thermalcomfort and indoor air quality. Thus, this experimental investigation focuses on the performances of three different air distribution systems in an open-plan office space. The investigated systems were: mixing ventilation with ceiling-mounted inlets, confluent jets ventilation and underfloor air distribution with straight and curved vanes. Although this represents a small part of our more extensiveexperimental investigation, the results show that all the purposed stratified ventilation systems (CJV and UFAD) were more or less behaving as mixing systems with some tendency for displacement effects. Nevertheless, it is known that the mixing systems have a stable flow pattern but has the disadvantage of mixing contaminated air with the fresh supplied air which may produce lower performance and in worst cases occupants' illness. For the open-plan office we studied here, it will be shown that the new systems are capable of performing better than the conventional mixing systems. As expected, the higher air exchange efficiency in combination with lower local mean age of air for corner-mounted CJV and floor-mounted UFAD grills systems indicates that these systems are suitable for open-plan offices and are to be favored over conventional mixing systems.
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2.
  • Hillman, Karl, et al. (författare)
  • Fostering sustainable technologies : A framework for analysing the governance of innovation systems
  • 2011
  • Ingår i: Science and Public Policy. - : Beech Tree Publishing. - 0302-3427 .- 1471-5430. ; 38:5, s. 403-415
  • Tidskriftsartikel (refereegranskat)abstract
    • The development and diffusion of technological innovations need governing in order to contribute to societal goals related to sustainability. Yet, there are few systematic studies mapping out what types of governance are deployed and how they influence the development and diffusion of sustainable technological innovations. This paper develops a framework for analysing the role of governance in innovation systems aimed towards sustainability. The framework is based on the literatures on governance, technological innovation systems and socio-technical transitions. We foresee empirical studies based on the framework that may serve as a needed input into governance processes. © Beech Tree Publishing 2011.
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  • Resultat 1-2 av 2

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