A5088334014- Building Energy and Comfort Optimization
- Wind and Air Flow Studies
- Energy Efficiency and Management
- Smart Grid Energy Management
- Infection Control and Ventilation
- Urban Heat Island Mitigation
- Hygrothermal properties of building materials
- Integrated Energy Systems Optimization
- Geothermal Energy Systems and Applications
- Sustainable Building Design and Assessment
- Indoor Air Quality and Microbial Exposure
- Research in Social Sciences
- Renewable Energy and Sustainability
- Environmental Impact and Sustainability
- Facilities and Workplace Management
- CO2 Sequestration and Geologic Interactions
- Adsorption and Cooling Systems
- Building energy efficiency and sustainability
- Thermoregulation and physiological responses
- Textile materials and evaluations
- Energy and Environmental Systems
- Hybrid Renewable Energy Systems
- Climate Change and Health Impacts
- Ranque-Hilsch vortex tube
- Refrigeration and Air Conditioning Technologies
Aalto University
2016-2025
Tallinn University of Technology
2020-2024
Office of Energy Efficiency and Renewable Energy
2018-2021
Espoo Music Institute
2018
University of Helsinki
2003-2008
The expected extensive production of hydrogen through water electrolysis will generate a substantial quantity industrial waste heat. Waste heat recovery from electrolyzer facilities would provide significant potential for renewable generation into district heating (DH) networks. This paper investigates the techno-economic recovering an off-grid alkaline (AWE) plant and using in DH network under Nordic conditions. A system that includes pumps, pit thermal energy storage (PTES) electric boiler...
Member countries of the European Union have released targets to reduce carbon dioxide emissions by 80% year 2050. Energy use in buildings is a major source these emissions, which why this study focused on cost-optimal renovation Finnish apartment buildings. Apartment from four different construction years (pre-1976, 1976–2002, 2003–2009 and post-2010) were modelled, using three heating systems: district heating, ground-source heat pump exhaust air pump. Multi-objective optimisation was...
Finland and the European Union aim to reduce CO2 emissions by 80–100 % before 2050. This requires drastic changes in all emissions-generating sectors. In building sector, new buildings are required be nearly zero energy buildings. However, 79 of were built 2000, meaning that they lack heat recovery suffer from badly insulated facades. study presents four large-scale retrofit scenarios, showing emission reduction potential whole Finnish stock. Six basic types with several age categories...
The global average air temperature is increasing as a manifestation of climate change and more intense frequent heatwaves are expected to be associated with this rise worldwide, including northern Europe. Summertime indoor conditions in residential buildings the health occupants influenced by change, particularly if no mechanical cooling used. energy use contributes through greenhouse gas emissions. It is, therefore, necessary analyze effects on overheating risk demand assess efficiency...
Amidst rising ambient temperatures and frequent heatwaves, assessing summer indoor overheating is crucial. This study examined in over 6000 apartments to show the temporal aspects of during hot 2021 compared average 2020 Helsinki region Finland, with additional consideration apartments' design year, size, number rooms. Data analysis was conducted employing ANOVA post hoc tests assess impact apartment characteristics on overheating. Finnish building codes health-related regulations defined...
As the incidence of extended hot summers in Nordic climate increases due to change, non-mechanically cooled apartments face high risks overheating. Hence, this study aimed investigate temporal effects heatwaves on indoor temperatures and examine correlation between outdoor weather conditions temperature levels. A comprehensive field was conducted across over 6000 Helsinki region during summer 2021 its heatwaves. Results indicated that nearly half experienced above 27 °C for 7 consecutive...
To mitigate the effects of climate change, European Union calls for major carbon emission reductions in building sector through a deep renovation existing stock. This study examines cost-effective energy retrofit measures Finnish detached houses. The house stock was divided into four age classes according to code effect at time their construction. Multi-objective optimization with genetic algorithm used minimize life cycle cost and CO2 emissions each type five different main heating systems...
This paper presents a validated simulation model for heat pump-based energy recycling systems, with focus on recovery applications in grocery stores. Heat is recovered through pumps from subcritical CO2-based refrigeration system, exhaust air used demand according to the heating demand. The case study Finnish hypermarket-sized store, where pump system has been operational since 2020. Multi-objective optimization validate by estimating critical decision variable values and providing error...