Sökning: "ORC"

Visar resultat 11 - 15 av 46 uppsatser innehållade ordet ORC.

1. 11. Energitekniska alternativ vid ansträngd eleffekt

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Jennifer Karlsson; [2020]
   Nyckelord :Effektbrist; energi; energiteknik;

   Sammanfattning : I Sverige pågår det idag en omställning av energisystemet och denna omställning har lett till att det finns effektbrist under vissa perioder av året. Denna effektbrist beror på att det i Sveriges elnät finns vissa kapacitetsbegränsningar, att mycket av elproduktionen sker i norr men att fler bor i söder, nedstängningen av kärnkraftreaktorer samt den elektrifiering som sker av samhället. LÄS MER

3. 12. Potential till energiutvinning från deponigas på Tagenedeponin norr om Göteborg

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Erik Johansson; [2020]
   Nyckelord :Deponigas; Diffusa Utsläpp; Energiutvinning; Avfallshantering; Nedbrytningsmodellering; Kemiteknik; Chemical engineering; Technology and Engineering;

   Sammanfattning : When organic material is deposited at a landfill it is decomposed over time by microorganisms to form a gas mixture consisting of mainly methane, carbon dioxide and nitrogen called landfill gas. To limit the environmental impact from this gas there is a requirement in Sweden today that all landfills which have accepted or are accepting organic material to be equipped with a gas collection system and at least a flare to combust the methane. LÄS MER

4. 13. Economic and Environmental Benefits of the ORC and the Willingness to Invest : A case study from a wastewater treatment plant and a small-scale combined heat and power plant

   Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

   Författare :Måns Linde; [2019]
   Nyckelord :ORC; Operation strategy; emissions; profitability; wastewater treatment; CHP;

   Sammanfattning : In Sweden, as many other European countries, centralized large-scale electricity production has traditionally been used to meet the electricity and heat demand. During recent years however, small-scale producers have gained more ground and contributes more to the total electricity generation. LÄS MER

5. 14. Column-based storage for analysis of high-frequency stock trading data

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Abdallah Hassan; [2019]
   Nyckelord :;

   Sammanfattning : This study investigated the efficiency of the available open-source columnbased storage formats with support for semi-flexible data in combination with query engines that support querying these formats. Two different formats were identified, Parquet and ORC, and both were tested in two different modes, uncompressed and compressed with the compression algorithm Snappy. LÄS MER

7. 15. Techno-Economic Analysis of Organic Rankine Cycles for a Boiler Station : Energy system modeling and simulation optimization

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för fysik och astronomi

   Författare :Jamel Hudson; [2019]
   Nyckelord :Organic Rankine cycle; ORC; Working fluids; Boiler station; District heating system; Simulation model;

   Sammanfattning : The Organic Rankine Cycle (ORC) may be the superior cycle for power generation using low temperature and low power heat sources due to the utilization of high molecular mass fluids with low boiling points. They are flexible, simple, easy to operate and maintain, and offer many possible areas of applications including waste heat recovery and power generation from biomass, geothermal and even solar energy. LÄS MER