Avancerad sökning

Hittade 5 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Micro-grids supplied by renewable energy : Improving technical and social feasibility

   Författare :Caroline Bastholm; Ewa Wäckelgård; Annette Henning; Frank Fiedler; Kirsten Ulsrud; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rural electrification; Electricity access; Decentralized; Off-grid; Photovoltacs; PV-hybrid; Micro-grid; Multi-disciplinary; Sociotechnical; Engineering Science; Teknisk fysik; Energy and Built Environments;

   Sammanfattning : Universal access to electricity stands high on the global agenda and is regarded as essential for positive development in sectors such as health care, education, poverty reduction, food production and climate change. Decentralized, off-grid electrification is deemed an important complement to centralized grid extension. LÄS MER

3. 2. Low-temperature based thermal micro-grids: operation and performance assessments

   Författare :José Fiacro Castro Flores; Viktoria Martin; Bruno Lacarrière; Justin NingWei Chiu; Vittorio Verda; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low-temperature district heating; active thermal micro-grid; substation operation; performance assessment; distributed heat resources; chauffage urbain basse température; micro-réseaux de chaleur urbains actifs; fonctionnement de la sous-station; évaluation de la performance; sources de chaleur distribuées; lågtemperatur fjärrvärme; aktiv fjärrvärmemikronät; fjärrvärmecentral operation; prestationsbedömning; distribuerada värmekällor; Energy Technology; Energiteknik;

   Sammanfattning : Energy use in the urban environment is vital for the proper functioning of our society, and in particular, comfort heating –or cooling– is a central element of our energy system often taken for granted. Within this context, district energy systems and especially, district heating (DH) systems must evolve to adapt to the upcoming decades-long transition towards a sustainable energy system. LÄS MER

4. 3. Developing a Security-Enhanced Internet-of-Things Based Communication System for Smart Microgrids

   Författare :Aron Kondoro; Hannu Tenhunen; Anders Hallén; Nerey Mvungi; Masoumeh Ebrahimi; Giovanni Spagnuolo; KTH; []
   Nyckelord :Informations- och kommunikationsteknik; Information and Communication Technology;

   Sammanfattning : Access to clean and reliable electric power is still a challenge for many local communities in developing countries. Smart micro-grids are one of the new practical solutions that can take advantage of locally available resources to satisfy the energy demands of these communities. LÄS MER

5. 4. Walking along the lines of power. A systems approach to understanding co-emergence of society, technology and nature in processes of rural electrification

   Författare :Helene Ahlborg; Chalmers tekniska högskola; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

   Sammanfattning : Many African governments, international and local organizations involved in development policy and practice consider rural electrification (RE) to be a priority. In the absence of electric grid infrastructure, rural populations rely on, for example, diesel generators, batteries and solar panels for their electricity supply and on kerosene, wood and charcoal for lighting and heating purposes. LÄS MER

7. 5. Buildings' Transition to Active Nodes: Assessing the Viability of DC Distribution, PV and Battery Storage

   Författare :Patrik Ollas; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Buildings; Battery storage; Energy management; Solar photovoltaic; Direct current;

   Sammanfattning : Historically, buildings have been passive nodes in the electric grid system with one-way power flows. However, with the recent market development of solar photovoltaic (PV) and stationary behind-the-meter battery storage systems, buildings are now transitioning to active nodes, offering bi-directional power flows. LÄS MER