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Hybrid energy systems have become a promising strategy for enhancing power utilization efficiency while preserving ecology. Previous research has predominantly focused on developing models with fixed ecological constraints. However, the fixed ecological constraints overlook dynamic ecological uncertainty and its interaction with operation decisions. This study proposes adaptive operating rules for
Handling gas cylinders in the laboratoryGas cylinders containing flammable gases must not be stored in the laboratory. However, there is an exception for gas cylinders with a maximum capacity of 10 liters, which can be used temporarily during a specific day but never to be left overnight or weekends.Pay attention to the EX-zone: Ensure that no electrical devices are present in the EX-zone, except
https://www.kc.lu.se/en/employee/general-safety-regulations/5-general-rules-work-chemicals/53-flammable-gases - 2026-06-05
Hydrogen fueled and electrical powertrains are seen as the primary pathways for future sustainable road transport. In our research we focus on hydrogen internal combustion engines. Hydrogen engines offer high efficiency, and the use of hydrogen as fuel means that emissions associated with carbon atoms do not occur. This means that hydrogen engines do not produce carbon monoxide, carbon dioxide, hy
https://www.energy.lth.se/research/hydrogen-engines - 2026-06-05
Organic semiconducting polymers exhibited promising photocatalytic behavior for hydrogen (H2) evolution, especially when prepared in the form of polymer dots (Pdots). However, the Pdot structures were formed using common nonconjugated amphiphilic polymers, which have a negative effect on charge transfer between photocatalysts and reactants and are unable to participate in the photocatalytic reacti
Key research area Negative emission technologies, or large scale carbon dioxide removal, are by many assessments, policy makers, industries and companies, seen as key to slow or halt climate change. Researchers at LUCSUS studies the narratives, implementation and impacts of these technologies from political, economical and justice perspectives. The research takes a critical perspective, and studie
As continuous access to energy is necessary for survival, the level of energy stores has a strong effect on fitness and survival. Behaviors by which energy stores are acquired and built up are known as foraging, and this is a very common topic in animal behavior studies. It is especially important for flying organisms to finely tune the level of energy reserves they carry. While most animals will
As the phase change material (PCM), pure paraffin wax is mixed with CuO (high heat conduction) and Span-80 (as a dispersant) in this research. The CuO/paraffin nanocomposite PCMs is synthesized with mass fractions of 0.3%, 0.6%, 0.9% and 1.2% by a two-step method. Dispersion stability and nanoparticle morphology of CuO/paraffin nanocomposite PCMs are analyzed by using a spectrophotometer and a sca
We report on a hybrid bioelectrochemical system that integrates an energy converting part, viz. a glucose/oxygen enzymatic fuel cell, with a charge-storing component, in which the redox features of the immobilized redox protein cytochrome c (cyt c) were utilized. Bilirubin oxidase and pyrroloquinoline quinone-dependent glucose dehydrogenase (PQQ-GDH) were employed as the biocatalysts for dioxygen
The continuous increase in global energy consumption has led to a greater focus on the energy required for heating buildings. This thesis presents a techno-economic model for analysing low-temperature district heating networks coupled with a geothermal heat source. The model was used to analyse an existing system in Denmark with 15 connected single-family detached houses. Each of the houses has a
Machining-based deformation processing is used to produce metal foil and flat wire (strip) with suitable properties and quality for electrical power and renewable energy applications. In contrast to conventional multistage rolling, the strip is produced in a single-step and with much less process energy. Examples are presented from metal systems of varied workability, and strip product scale in te
High efficiency, low total harmonic distortion (THD), and near-unity power factor are essential for low voltage battery charging systems to satisfy modern power quality requirements. In this study, an isolated totem-pole power factor correction (PFC) integrated buck converter has been designed and analyzed for low-voltage battery charging applications. The proposed topology combines a bridgeless t
In the future, buildings need to be energy resilient to tackle the energy crisis. This article introduces a concept for classifying the energy resilience of buildings in extreme cold and warm weather in Finland during blackouts. It presents a techno-economic comparison between an old and a new single-family building integrated with photovoltaic (PV) systems and batteries, analyzing their resilienc
Microsoft Word - 0 Front.docx Research Co-ordinators: Thomas Lindhqvist & Mikael Backman Energy Futures Øresund Bridging the Gaps to a Greener Tomorrow Veronica Andronache, Lea Baumbach, Sarah Czunyi, Tom Figel, Filipe Firpo, Jordan Hayes, Peter Kiryushin, Mauricio Lopez, Adrian Mill, Ian Ross, Stefan Sipka, Charlotte Luka, Mary Ellen Smith, Logan Strenchock, Meiling Su, Allison Witter & Ouyang Xi
Hydrogen migration is a ubiquitous phenomenon upon dissociation of organic molecules. Here we investigate the formation of a H3O+ fragment after core-level photoionization and Auger decay in aminobenzoic acid molecules - a process that requires the migration of at least two hydrogen atoms. Using photoelectron-photoion coincidence spectroscopy, the formation of a H3O+ fragment is observed to be mor
