Department of Mechanical Engineering

Energy Efficiency and Systems

Energy efficiency plays a key role in solving challenges related to developing a sustainable future for human societies, highlighting the need to optimise energy systems of all sizes.
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In the Energy Efficiency and Systems research group, research is focused on energy generation and energy consumption systems. The scale of these systems ranges from single buildings to industrial energy systems and continental energy networks.

Despite the variety of application areas, common research methods provide opportunities for close cooperation between the group's researchers, thus providing the base of knowledge needed for top-level research. This knowledge base also provides possibilities for international research cooperation.

Efficient energy use and indoor climate in buildings, energy- and material-efficient technologies, process concepts and process integration in industry, and optimal energy systems of communities are the key research knowledge in the group. The basis of the research is in the increasing complexity of energy systems and the need to reduce their environmental impact.

The main research tools are different types of analysis, simulation and optimisation methods used in computer software and programs. These computer programs include both leading commercial software and programs created by the group. Experimental methods are also used, focusing on efficient integration of renewable energy in buildings, on drying technology and on measuring the indoor-air quality and performance of energy systems in buildings.

The societal and economic impact of energy technologies is studied by applying system analysis tools to search for ways to integrate renewable energy and to reduce greenhouse gas emissions in energy systems of both industrialised countries like Finland and developing countries. The tools that are utilised include life-cycle approaches, carbon footprint calculation, (primary) energy efficiency analysis, exergy analysis, production simulation and multi-objective optimisation, GIS analysis, investment analysis as well tools for multicriteria decision making. Research is done within national Finnish research programs, the EU’s Horizon programme and in other international research programmes.

The group also studies large transformations of energy systems to reach carbon-neutrality. Medium- and long-term energy system transformations are studied with energy system models, such as EnergyPLAN and EnergyPRO as well as in-house models of electricity markets and demand-side management. The focus of research is on modelling and exploring future developments of national energy systems, city-level heating systems and international electricity markets.

Latest publications

Indoor environmental quality improvement of student dormitories in Tehran, Iran

Nastaran Abdollahzadeh, Azin Velashjerdi Farahani, Kamyar Soleimani, Zahra Sadat Zomorodian 2023 International journal of building pathology and adaptation

Risk of Microbial Growth in Ventilation Ductwork Located in the Humid and Cold Conditions

Ilia Kravchenko, Pertti Pasanen, Sami Lestinen, Simo Kilpeläinen, Risto Kosonen 2023 Buildings

Effect of biomass-based carbon capture on the sustainability and economics of pulp and paper production in the Nordic mills

Katja Kuparinen, Satu Lipiäinen, Esa Vakkilainen, Timo Laukkanen 2023 Environment, Development and Sustainability

Surrogate modeling for long-term and high-resolution prediction of building thermal load with a metric-optimized KNN algorithm

Yumin Liang, Yiqun Pan, Xiaolei Yuan, Wenqi Jia, Zhizhong Huang 2023 Energy and Built Environment

Effect of active chilled beam layouts on ventilation performance and thermal comfort under variable heat gain conditions

Ru Ming, Panu Mustakallio, Risto Kosonen, Tuomas Kaukola, Simo Kilpeläinen, Baizhan Li, Yuxin Wu, Runming Yao 2023 Building and Environment

Methods for infection prevention in the built environment—a mini-review

Noora Salonen, Merja Ahonen, Kai Sirén, Riika Mäkinen, Veli Jukka Anttila, Meija Kivisaari, Kalle Salonen, Aino Pelto-Huikko, Martti Latva 2023 Frontiers in Built Environment

Energy, cost and emission saving potential of demand response and peak power limiting in the German district heating system

Janne Suhonen, Joakim Lindholm, Moritz Verbeck, Yuchen Ju, Juha Jokisalo, Risto Kosonen, Philipp Janßen, Hans Schäfers 2023 International Journal of Sustainable Energy
More information on our research in the Aalto research portal.
Research portal

Research group members

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