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Implementation of circular economy in regional strategies
(Lappeenranta-Lahti University of Technology LUT, 2021-12-22)
One proposed solution to the sustainability crisis is to pursue a circular economy, which is a regenerative economic system that aims to design out waste while keeping products and materials in use for as long as possible. ...
Flexibility aggregation of local energy systems—interconnecting, forecasting, and scheduling
(Lappeenranta-Lahti University of Technology LUT, 2021-12-13)
The socio-technical transformation of the energy sector in pursuit of its decarbonization and innovations in digital and energy technologies are shifting the present electric power systems with a centralized governance to ...
Modelling of component dynamics and system integration in power-to-gas process
(Lappeenranta-Lahti University of Technology LUT, 2021-12-09)
Climate change mitigation requires reducing of greenhouse gas emissions, especially carbon dioxide (CO2). Reducing fossil fuel usage is the main method of combatting greenhouse gas emissions in the energy sector, together ...
Raw Material Supply and its Influence on Profitability and Life-Cycle Assessment of Torrefied Pellet Production in Finland – Experiences from Pilot-Scale Production
(Lappeenranta-Lahti University of Technology LUT, 2021-11-05)
The European climate policy aims to move toward an environmentally friendly world, and it has been awakened by a strong will to find replacement fuel alternatives to fossil fuels, especially for coal. Torrefied pellets ...
Submersible permanent-magnet synchronous machine with a stainless core and unequal teeth widths
(Lappeenranta-Lahti University of Technology LUT, 2021-06-30)
In recent years, permanent magnet synchronous machines (PMSM) have gained popularity owing to their excellent performance compared with other kinds of electrical machines in numerous applications. Furthermore, advances in ...
Development of learning methodology of additive manufacturing for mechanical engineering students in higher education
(Lappeenranta-Lahti University of Technology LUT, 2021-07-07)
The main aim of this thesis was to research the learning of additive manufacturing (AM) and the impact of using multiple AM technologies as a form of learning. The goal was to develop a new methodology for learning additive ...
Transition towards optimal renewable energy systems for sustainable development
(Lappeenranta-Lahti University of Technology LUT, 2021-11-04)
The world is in transition from current fossil fuel-based decoupled energy sectors, towards defossilised and integrated energy systems. Debates on such a transition, initially inspired by fossil fuel scarcity concerns, ...
Environmental sustainability of geopolymer composites
(Lappeenranta-Lahti University of Technology LUT, 2021-12-03)
Portland cement (PC) production is resource-intensive and contributes 4–8% of global CO2 emissions. The quest for reduced CO2 emissions from PC production has led to the development of geopolymer binders. Geopolymers are ...
Coupling multibody dynamics and hydraulic actuators for indirect Kalman filtering and real-time simulation
(Lappeenranta-Lahti University of Technology LUT, 2021-10-15)
The computer simulation of complex mechanical systems can be performed using multibody dynamics. Multibody models often include a description of hydraulic actuators, which can introduce numerical stiffness into the models. ...
Analysis of sorption-enhanced gasification for production of synthetic biofuels from solid biomass
(Lappeenranta-Lahti University of Technology LUT, 2021-12-01)
Anthrophonic greenhouse gas emissions have led to climate change. The transportation sector is one of the most significant greenhouse gas emitters. Mitigation of carbon dioxide (CO2) emissions from transportation is a great ...