Sökning: "Insulation condition assessment"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Insulation condition assessment.

1. 1. Konditionsbedömning av en grupp transformatorer på Forsmark kärnkraftverk : Modellbaserad åldringsanalys av transformatorer

   Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

   Författare :Samuel Sjöqvist; [2023]
   Nyckelord :Transformator; elkraft; energisystem; kärnkraft; åldrandehantering;

   Sammanfattning : This thesis used a model-based approach to assess the condition of a group of transformers at Forsmark nuclear plant. Since it’s problematic for practical and economic reasons to examine the paper insulation by inspection, this approach was chosen. LÄS MER

3. 2. Design changes to simplify maintenance and condition assessment on a tap changer

   Master-uppsats, Jönköping University/JTH, Industriell produktutveckling, produktion och design

   Författare :Arvid Fermér; Jakob Modling; [2023]
   Nyckelord :Power transformer; Chemical degradation; Electrical insulation; Tap changer; Insulation Electrical; Transformer insulation; Insulating oil; Insulation condition assessment; Transformer; Power grids; Power distribution; Oil filled transformer; Transformer oil;

   Sammanfattning : This master thesis investigates a redesign for a maintenance tube, used for both sampling and draining transformer oil from a tap changer compartment. With the current design, one can do one or the other of sampling and draining. LÄS MER

4. 3. Assessment of the environmental impacts, energy performance and economic aspects of various construction materials

   Master-uppsats, Lunds universitet/Avdelningen för Energi och byggnadsdesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

   Författare :Mohsen Bayat Pour; Mohammed Labib Elsayed; [2020]
   Nyckelord :Bio-based Materials; Fossil-based Materials; Building Performance Simulations; Energy analysis; Environmental impact categories; Life cycle assessment LCA ; Economic analysis; Life cycle costing LCC ; Global warming potential; Climate change; Future climate analysis; Timber structure; Concrete structure; Insulation; HVAC systems; Heating demand; Cooling demand; Energy use; Hygrothermal analysis; Moisture; Thermal envelope; Thermal comfort; Indoor environmental quality; Actual case studies; Iterative workflow; Weather files; Parametric study; Reliability; Single-point rate SPR .; Technology and Engineering;

   Sammanfattning : Increasing CO₂ emission is considered as the main reason for global warming in the world. One of the reasons for producing CO₂ is using of fossil-based materials in the construction projects. LÄS MER

5. 4. Heating Energy Performance & LCC Analysis on Renovation Proposals of a Multi-Family Apartment Cluster

   Master-uppsats, Lunds universitet/Avdelningen för Energi och byggnadsdesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

   Författare :Yinxin Liu; Stevson Sonny Widjaja; [2020]
   Nyckelord :Building energy consumption; building renovation; building envelop; heat pump; individual substation; life cycle cost; Technology and Engineering;

   Sammanfattning : The study was carried out to assess the energy performance of the buildings in a cluster located in Lund. The buildings were the projects of million homes program, built in the 1960s, and are in great need of renovation. Five retrofit techniques were proposed in the study. LÄS MER

7. 5. Improving Daylighting Utilization in LTH Study Center

   Master-uppsats, Lunds universitet/Avdelningen för Energi och byggnadsdesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

   Författare :Rifat Tabassoom Tumpa; Inez Eugenia; [2019]
   Nyckelord :Daylighting; energy demand; window to wall ratio; daylight factor; daylight autonomy; heating and cooling demand; electric lighting dependency; Technology and Engineering;

   Sammanfattning : Daylighting is a free source of light that fosters a direct connection to nature. It has a great potential to enhance the health and productivity of the building inhabitants, to improve thermal and visual comfort in indoor spaces, and to increase energy efficiency in buildings. LÄS MER