Organization profile

Organisation profile

Head of Research Group: Alireza Afshari.

Need for new knowledge

The research group is providing energy efficient solutions for improving atmospheric climate and thermal conditions in buildings.

Research efforts

The solutions are based on development of new technologies for ventilation, heating, cooling and air cleaning including control of the systems. Buildings included are office buildings, institutions and schools as well as residential buildings comprising both existing and new buildings.

Energy efficiency is considered not only in terms of reduced energy use, but also in terms of management and optimization of energy use in time, e.g. through the use of Smart Grids and bidirectional district low-temperature-heating/high-temperature-cooling systems. On building level energy efficient solutions comprise room based control of demand controlled systems combining ventilation, heating and cooling together with systems combining ventilation, phase change materials and renewable energy sources. The air cleaning solutions provided comprise technologies for reducing the concentration of both particles and gases considering indoor air quality and protection of the ventilation system.

Cooperation

Energy efficient solutions are developed through simulations, laboratory investigations, pilot projects, provision of prototypes and demonstrations in real buildings and typically in collaboration with e.g. the building sector, municipalities and relevant state agencies. Target groups for the proposed solutions are building installation engineers, building owners, HVAC-companies, municipalities and the occupants in the office buildings, schools, residential buildings etc.

Application

The research group contribute to providing research based knowledge to the authorities e.g. in relation to the Danish Building Regulations, collaborate in EU-projects and contribute to the exchange and the transfer of knowledge within various IEA Annexes. The research group includes PhD-students and post docs, and contribute to the teaching at various courses at AAU.

 

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Ventilation Engineering & Materials Science
Office buildings Engineering & Materials Science
Air Engineering & Materials Science
Heating Engineering & Materials Science
Cooling Engineering & Materials Science
Thermal comfort Engineering & Materials Science
Pressure control Engineering & Materials Science
Temperature Engineering & Materials Science

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Projects 2014 2021

Research Output 2004 2019

A PCM based cooling system for office buildings: a state of the art review

Paroutoglou, E., Afshari, A., Bergsøe, N. C., Fojan, P. & Hultmark, G., 2019, E3S Web of Conferences.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Phase change materials
Office buildings
Cooling systems
Energy storage
Thermal comfort

Evaluating the cooling capacity of diffuse ceiling ventilation system – Full-scale experimental study

Rahnama, S., Nielsen, P. V., Afshari, A., Bergsøe, N. C., Johra, H. & Jensen, R. L., 2019, (Submitted) CLIMA 2019.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Ceilings
Ventilation
Cooling
Air
Diffusers (fluid)

Full-scale operation of a novel two-pipe active beam system for simultaneous heating and cooling of office buildings

Maccarini, A., Hultmark, G., Bergsøe, N. C. & Afshari, A., 2019, CLIMA2019.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Activities 2016 2019

Airborne bacteria inactivation in an operating room environment using negative ions

Alireza Afshari (Lecturer)
13 Apr 2017

Activity: Talks and presentationsGuest lecturers

Airborne bacteria inactivation in an operating room environment using negative ions

Alireza Afshari (Lecturer)
7 Apr 2017

Activity: Talks and presentationsGuest lecturers

Characterization of indoor sources of fine and ultrafine particles

Alireza Afshari (Lecturer)
19 Mar 2017

Activity: Talks and presentationsGuest lecturers

Press / Media

Ny lærebog om opdriftsventilation

Karl Terpager Andersen

29/05/2019

1 item of media coverage

Press/Media: Press / Media

Vinteren er højsæson for dårligt indeklima

Göran Hultmark

06/03/2019

2 items of media coverage

Press/Media: Press / Media

Vinteren er højsæson for dårligt indeklima

Göran Hultmark

12/02/2019

1 item of media coverage

Press/Media: Press / Media