Energiteknik

Energy Technology and Indoor Climate - Research Platform

Description of the Research Platform

 


The research platform treats the indoor environment created by different principles for ventilation, heating, cooling and the properties and the status of limited surfaces. The subject of research contains both inhabited and uninhabited ventilated enclosures with considerable demands on cooling, heating and climatization. For inhabited enclosures the research covers the whole range from technology to man.

The purpose of the research is to obtain persistent basic knowledge and methods for energy efficient solutions to create proper indoor environment. The research will cover basic research in chemistry, fluid mechanics, heat transfer and experimental psychology that is the basis for indoor environment and technology development. Research within the area of technology development covers for instance the following areas: development of technology for good indoor environment and development of methods for evaluation of the indoor climate.  

The main research areas within the platform are:

Energy Technology and Indoor Climate - Research Platform

   


Research Staff

NamePositionTelephoneE-mail
Bahram MoshfeghProfessor in Heat Transfer, Head of Division026-648804bmh@hig.se
Peter HanssonLicentiate of Engineering, Ph.D. Candidate in the field of Indoor Climate   
Ulf LarssonLicentiate of Engineering Ph.D. Candidate in the field of Indoor Climate 026-648791ulf@hig.se
Niclas BjörsellLicentiate of Engineering Control Systems 026-648795nbl@hig.se
Hans JonssonM. Sc. Ph.D. Candidate in the field of Heat Transfer and Cooling Technology 08-7907426hansj@egi.kth.se
Shahnaz AmiriM. Sc. Ph.D. Student in the field of Indoor Climate  asz@hig.se
Elisabeth Nord-ÅgrenM. Sc. Ph.D. Student in the field of Energy Systems  
Kaisu SammalistoM. Sc. and MBA Ph.D. Student in the field of Environment 026-648794kso@hig.se
Mathias CehlinB. Sc. Ph.D. Student in the field of Indoor Climate   
Tobias ThörnströmB. Sc. Ph.D. Student in the field of Heat Transfer  
Jan FredrikssonResearch Engineer  
Veronica EadeResearch Engineer  

   


Research Activities


The Research Platform Energy Technology and Indoor Climate
  • Flow and Heat Transfer behind Photovoltaic Panels
  • Control of Heating Systems in Buildings
  • Parametrization Study of the Room Equipped by Cooling Ceiling Panel (Radiation Type)
  • Design of Heat Sinks for Cooling of Electronic Components
  • Measurement of the Air Temperatures in a Relatively Large Area Based on Using the Infrared Camera
  • Numerical Simulation of Industrial Ventilation Systems
  • To Render Electricity More Efficient at the Electrolux Factories in Motala in Sweden, Fredericia in Denmark and Spennymoor in England
  • SOLVENT - Ventilated Solar-Screen Window
  • Mapping of Energy Systems at AstraZeneca AB, Södertälje, Sweden
  • Analysis of Heating, Cooling and Ventilation Systems at Volvo Torslanda, Göteborg, Sweden
  • Cooling of Electronic Components Using Impinging Jet in a Cross-flow in the Presence of Pin Fin Heat Sinks. Project Presentation in English / Swedish.
  • Comfort and indoor environment consequences of requirement-adjusted ventilation for industrial premises. Project Presentation in English / Swedish.
  • A new energy efficient ventilation concept. Project Presentation in English / Swedish.

Publications

Journal and conference papers under review
    

  • H. Jonsson and B. Moshfegh. Modelling and Characterization of Plate Fin Heat Sinks under Bypass Flow Conditions Using Computational Fluid Dynamics. Accepted for publication in ASME Journal of Electronic Packaging.
  • M. Cehlin and M. Sandberg (2002). Monitoring of a Low Velocity Air Jet Using Computed Tomography, Accepted for presentation in RoomVent 2002, Danmark (2002).

2002

  • U. Larsson and B. Moshfegh. Experimental Investigation of Downdraught from Well-Insulated Windows. Building and Environment, 37, pp. 1073-1082 (2002).
  • M. Cehlin, B. Moshfegh and M. Sandberg. Measurements of Air Temperatures Close to a Low-Velocity Diffuser in Displacement Ventilation Using Infrared Camera: Parameter and Error Analysis. Energy and Buildings, 34, pp. 687-698 (2002).
  • Hansson P., Stymne H. VOC Sorption of Activity Related Contaminants - Influence of Boundary Layer Diffusion. Proceedings of the 9th International Conference on Indoor Air Quality and Climate, Indoor Air 2002, June 30 - July 5, Monterey -California, vol. 3, pp 546 - 551 (2002).
  • H. Jonsson and B. Moshfegh. Enhancement of the Cooling Performance of Circular Pin Fin Heat Sinks Under Flow Bypass Conditions. Proceedings of The Seventh Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems ITherm 2002, (2002).
  • F. Karlsson and B. Moshfegh. Investigation of Indoor Air and Energy Use in a Data Center. Proceedings of the ScandTherm, the First Scandinavian Conference on Thermal Management of Electronics, Stockholm (2002).
  • M. Cehlin and B. Moshfegh. Numerical and experimental investigation of air flows and temperature patterns of a low velocity diffuser. Proceedings of the 9th International Conference on the Air Quality and Climate, IndoorAir 2002, Monterey, USA (2002).
  • M. Sandberg and B. Moshfegh. Buoyancy induced air flow in photovoltaic facades (Effect of location of geometry of the air gap and location of solar cell modules). International Journal of Building and Environment 37, pp. 211-218 (2002).
  • Bahram Moshfegh and Robert Nyiredy. Comparing Different RANS Models for Thermal Analysis of Heat Sinks Under Bypass Conditions. Proceedings of the ScandTherm, the First Scandinavian Conference on Thermal Management of Electronics, Stockholm (2002).
  • Hans Jonsson and Bahram Moshfegh. Modeling and Enhancement of the Cooling Performance of Pin Fin Heat Sinks in Bypass Flow Using CFD. Proceedings of the ScandTherm, the First Scandinavian Conference on Thermal Management of Electronics, Stockholm (2002).

2001

  • T. Törnström, S. Amiri and B. Moshfegh. Flow and Thermal Characteristics of Warm Plane Air Jets (measurements and predictions using different k-e models). Proceedings of the Computational Methods and Experimental Measurements CMEM, (2001).
  • Jonsson, H., Moshfegh, B. Modeling of the Thermal and Hydraulic Performance of Plate Fin, Strip Fin, and Pin Fin Heat Sinks - Influence of Flow Bypass. IEEE Transactions on Components and Packaging Technologies, Vol 24, No 2 pp. 142-149 (2001).
  • J. Fredriksson, M. Sandberg and B. Moshfegh. Experimental Investigation of the Velocity Field and Air Flow pattern Generated by Cooling Ceiling Beams. International Journal of Building and Environment, 36, pp. 891-899 (2001).
  • H. Jonsson and B. Moshfegh. CFD Modelling of the Cooling Performance of Pin Fin Heat Sinks Under Flow Bypass Conditions. Proceedings of The Pacific Rim/International, Intersociety, electronic Packaging Technical/Business Conference Intersociety Conference, InterPACK 2001, (2001).

2000

  • H. Jonsson, B. Moshfegh, Influence of Fin Spacing, Fin Thickness, and Inlet Velocity on the Performance of Plate Fin Heat Sinks Under Varying Bypass Conditions Using Computational Fluid Dynamics. International Journal of Heat Exchangers (IJHEX), Vol I, No 2, pp. 177-196 (2000).
  • M. Céhlin, B. Moshfegh and M. Sandberg. Visualization and Measuring of Air Temperatures Based on Infrared Thermography. Proceedings of The 7th International Conference on Air Distribution in Rooms, ROOMVENT 2000, (2000).
  • U. Larsson and B. Moshfegh. Effect of Window Bay on the Downdraught from a Well-Insulated Window. Proceedings of The 7th International Conference on Air Distribution in Rooms, ROOMVENT 2000, (2000).
  • H. Jonsson and B. Moshfegh. Cooling Performance of Pin Heat Sinks under Varying Bypass Flow Conditions (Experimental and Numerical Investigations). . Proceedings of The Seventh Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems ITherm 2000, (2000).
  • J. Fredriksson, M. Sandberg and B. Moshfegh. Experimental Investigation of the Velocity Field and Air Flow pattern Generated by Cooling Ceiling Beams. Proceedings of The 7th International Conference on Air Distribution in Rooms, ROOMVENT 2000, (2000).
  • E. Linden, M. Céhlin and M. Sandberg. Temperature and Velocity Measurements on a Diffuser for Displacement Ventilation with Whole-Field Methods. Proceedings of The 7th International Conference on Air Distribution in Rooms, ROOMVENT 2000, (2000).
  • M. Cehlin, B. Moshfegh and H. Stymne. Mapping of Indoor Climate parameters in Volvo, Eskilstuna. Working Paper No 10, University of Gävle. (In Swedish), (2000).

1999

  • U. Larsson, B. Moshfegh and M. Sandberg. Thermal Analysis of Super-Insulated Windows, (Numerical and Experimental Investigations). International Journal of Energy and Buildings, 29:121-128 (1999).
  • N. Björsell. IDA Indoor Climate and Energy" Proceedings of BUILDING SIMULATION '99. (1999).
  • P. Hansson and H. Stymne. On the sink effect of VOCs on indoor materials consequences of repeated adsorption. Proceedings of the 8th International Conference on Indoor Air Quality and Climate, Indoor Air ´99, vol 5, pp 223-228 (1999).
  • B. Moshfegh and M. Sandberg. Flow and Heat Transfer in the Air Gap Behind Photovoltaic Panels. International Journal of Renewable & Sustainable Energy Reviews, 2:287-301 (1999).
  • B. Moshfegh. Introduktion till Matematisk Modellering av Turbulent Strömning. (In Swedish), (1999).

1998

  • U. Larsson, B. Moshfegh and M. Sandberg. Numerical and Experimental Analysis of the Thermal Performance of Well Insulated Windows. Proceedings of The CIB World Building Congress, (1998).
  • S. Amiri, M. Sandberg and B. Moshfegh. Spectral Analysis of a Turbulent Warm Plane Air Jet (Using hot-wire anemometry). Proceedings of The 6th International Conference on Air Distribution in Rooms, ROOMVENT '98, (1998).
  • P. Hansson and H. Stymne. Determination of material parameters for sorption of gaseous contaminants on indoor surfaces. Proceedings of the 6th International Conference on Air Distribution in Rooms, Roomvent ´98, vol 1, pp 513-520 (1998).
  • P. Hansson and H. Stymne. Adsorption and desorption of air contaminants on indoor surfaces. Proceedings of the CIB World Building Congress, pp 1255-1263 (1998).
  • M. Sandberg and B. Moshfegh (invited paper). Ventilated-Solar Roof Air Flow and Heat Transfer Investigation. Proceedings of The Renewable Energy 15:287-292, (1998).
  • N. Björsell. An automatically tuned feedforward compensation for heating systems with correlated disturbances. Proceedings of IASTED Control and Applications'98. (1998).
  • N. Björsell. On control strategies for heating systems: A model based estimate of optimal preheat time. Proceedings of EPIC '98, (1998).
  • B. Moshfegh, 1998. Computational Fluid Dynamics, CFD (Möjligheter och begränsningar). Elkyl-98, Seminarium om kylning av elektronik KTH, Stockholm, (in Swedish), (1998).

1996

  • B. Moshfegh and M. Sandberg (invited paper). The Investigation of Fluid Flow and Heat Transfer in a Vertical Channel Heated from one Side by PV Elements, Part I - Numerical Study. Proceedings of The Fourth Renewable Energy Congress, (1996).
  • M. Sandberg and B. Moshfegh (invited paper).The Investigation of Fluid Flow and Heat Transfer in a Vertical Channel Heated from one Side by PV Elements, Part II - Experimental Study. Proceedings of The Fourth Renewable Energy Congress, , (1996).
  • S. Amiri, M. Sandberg and B. Moshfegh. Effect of Cooling Loads on Warm Plane Air Jet. Proceedings of The 5th International Conference on Air Distribution in Rooms, ROOMVENT '96, (1996).
  • Björsell N., Reglerstrategier för uppvärmning av bostäder. Proceedings of REGLERMÖTE '96, pp. 174-175 (1996).
  • Björsell N., Control strategies for demand controlled ventilating systems. Proceedings of ROOMVENT '96. vol. 1, pp. 273-278, (1996).
  • Hansson P. and Stymne H. A technique to improve the performance of displacement ventilation during cold climate conditions. Proceedings of the 17th AIVC conference, vol 1, pp 521 - 528, (1996).
  • B. Moshfegh and M. Sandberg. Influence from Surface Area of Radiant Cooling Ceiling Panel on Air Movement, (Numerical Study). Proceedings of The 5th International Conference on Air Distribution in Rooms, ROOMVENT '96, (1996).

Theses


Jonsson, H. Turbulent Forced Convection Air Cooling of Electronics with Heat Sinks Under Flow Bypass Conditions. Doctoral Thesis, Royal Institute of Technology, Department of Energy Technology, Stockholm, Sweden, Trita REFR Report No 01/28, ISSN 1102-0245, ISRN KTH/REFR/R-01/28-SE. (2001).
Björsell, N., Control of Heating Systems in Buildings, Licentiate Thesis, Teknikum Institute of Technology, Uppsala University, (1998).
Hansson, P., The interaction of gaseous contaminants with indoor materials-modelling and development of an experimental technique, Department of Built Environment, Royal Institute of Technology, KTH, Sweden, ISBN 91-7170-432-9, (1999)
Larsson, U., Thermal Analysis of Well-Insulated Windows. Licentiate Thesis, Division of Indoor Climate and Ventilation Technology, Department of Built Environment, Royal Institute of Technology, KTH, Sweden,(1999).
Publicerad av: Liselotte Laurila Sidansvarig: Gunilla Mårtensson Sidan uppdaterades: 2015-02-03
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