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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.

Latest publications

Energy Efficiency and Systems, Department of Mechanical Engineering

Numerical analysis of magnetic field effects on the heat transfer enhancement in ferrofluids for a parabolic trough solar collector

Publishing year: 2019 Renewable Energy
Department of Mathematics and Systems Analysis, Energy Efficiency and Systems, Department of Mechanical Engineering

Parametric optimization of long-term multi-area heat and power production with power storage

Publishing year: 2019 Applied Energy
Energy Efficiency and Systems, Department of Mechanical Engineering

Thermodynamic and Economic Analysis of a Hybrid Ocean Thermal Energy Conversion/Photovoltaic System with Hydrogen-Based Energy Storage System

Publishing year: 2019 Energy
Energy Efficiency and Systems, Department of Mechanical Engineering

Evaluation of design objectives in district heating system design

Publishing year: 2019 Energy
Energy Efficiency and Systems, Department of Mechanical Engineering

Direct quantification of multiple-source energy flexibility in a residential building using a new model predictive high-level controller

Publishing year: 2019 Energy Conversion and Management
Department of Mechanical Engineering, Energy Efficiency and Systems

The Influence of Magnetic Field on Heat Transfer of Magnetic Nanofluid in a Double Pipe Heat Exchanger Proposed in a Small-Scale CAES System

Publishing year: 2019 Applied Thermal Engineering
Department of Built Environment, Real Estate Economics, Department of Mechanical Engineering, Energy Efficiency and Systems

Introducing modern heat pumps to existing district heating systems – Global lessons from viable decarbonizing of district heating in Finland

Publishing year: 2019 Energy
Department of Communications and Networking, Energy Efficiency and Systems, Department of Mechanical Engineering

Waste heat from data centers

Publishing year: 2019 Sustainable Cities and Society
Department of Mechanical Engineering, Energy Efficiency and Systems

Actimetry for Estimating Occupant Activity Levels in Buildings

Publishing year: 2019 IEEE Consumer Electronics Magazine
Energy Efficiency and Systems, Department of Mechanical Engineering

Effect of Magnetic Field on Heat Transfer Coefficient of Fe3O4-Water Ferrofluid Using Artificial Intelligence and CFD simulation

Publishing year: 2018 EUROPEAN PHYSICAL JOURNAL PLUS
More information on our research in the Research database.
Research database

Research group members

Elnaz Abdollahi

Department of Mechanical Engineering
Doctoral Candidate
Kari Alanne

Kari Alanne

Department of Mechanical Engineering
Senior University Lecturer

Aira Hast

Department of Mechanical Engineering
Postdoctoral Researcher
Kristo Helin

Kristo Helin

Department of Mechanical Engineering
Doctoral Candidate

Janne Hirvonen

Department of Mechanical Engineering
Postdoctoral Researcher
Henrik Holmberg

Henrik Holmberg

Department of Mechanical Engineering
Senior University Lecturer
Juha Jokisalo

Juha Jokisalo

Department of Mechanical Engineering
Senior Scientist

Jaakko Jääskeläinen

Department of Mechanical Engineering
Doctoral Candidate

Genku Kayo

Department of Mechanical Engineering
Doctoral Candidate
Ali Khosravi

Ali Khosravi

Department of Mechanical Engineering
Postdoctoral Researcher
Risto Kosonen

Risto Kosonen

Department of Mechanical Engineering
Professor (Associate Professor)
Risto Lahdelma

Risto Lahdelma

Department of Mechanical Engineering
Professor

Natalia Lastovets

Department of Mechanical Engineering
Doctoral Candidate
Timo Laukkanen

Timo Laukkanen

Department of Mechanical Engineering
Staff Scientist
Sami Lestinen

Sami Lestinen

Department of Mechanical Engineering
Doctoral Candidate

Tiina Myllymaa

Department of Mechanical Engineering
Doctoral Candidate

Ville Olkkonen

Department of Mechanical Engineering
Doctoral Candidate
Jukka Paatero

Jukka Paatero

Department of Mechanical Engineering
Senior University Lecturer
Hassam Rehman

Hassam Rehman

Department of Mechanical Engineering
Doctoral Candidate
Elina Rikkas

Elina Rikkas

Department of Mechanical Engineering
Doctoral Candidate
Kai Siren

Kai Siren

Department of Mechanical Engineering
Senior Advisor
Sanna Syri

Sanna Syri

Department of Mechanical Engineering
Professor

Markku Virtanen

Department of Mechanical Engineering
Professor of Practice

Haichao Wang

Department of Mechanical Engineering
Academy Postdoctoral Researcher

Weixin Zhao

Department of Mechanical Engineering
Doctoral Candidate