Sökning: "vattenfall modell"

Visar resultat 1 - 5 av 27 uppsatser innehållade orden vattenfall modell.

1. 1. Potential benefits of implementing demand response into Vattenfall’s district cooling grid in Uppsala, Sweden

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Magdalena Guerrero Wretljung; [2023]
   Nyckelord :;

   Sammanfattning : Lately, there has been an increased cooling demand in Vattenfall’s district cooling (DC) network in Uppsala, Sweden. This especially occurs on warmer summer days, during so-called peak demand periods, where there is limited cooling capacity combined with limited distribution capacity in the network. LÄS MER

3. 2. System impact of micro-production

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

   Författare :Annie Haraldsson; [2023]
   Nyckelord :Fault ride through; LVRT; micro-production; solar production; photovoltaics; fault simulation; network modeling; power system disturbances; PMU-registrations; fault analysis; Technology and Engineering;

   Sammanfattning : The focus in this thesis has been active power from small scale solar production and what possible impacts an increased proportion of small scale production can have, in a larger context, during short circuit (SC) faults in the grid. The main research question prompting this work was whether active power from small scale solar pro- duction can help support voltages during SC faults, and meet LVRT-requirements in the RfG. LÄS MER

4. 3. Life Cycle Perspective on School Buildings’ Energy Retrofitting

   Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

   Författare :Maryam Kafashtehrani; [2022]
   Nyckelord :School; building; LCA; IDA-ICE; energy retrofitting; insulation; ventilation; photovoltaic; PV; GHG;

   Sammanfattning : The building sector contributes substantial energy consumption and greenhouse gas (GHG) emissions. Energy efficiency is the main driver for the mitigation of climate change. Schools are placed with high energy consumption and GHG emitting. LÄS MER

5. 4. Kartläggning av Cytivas koldioxidutsläpp till följd av inomhustemperaturreglering

   Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

   Författare :Oscar Green; Sixten Pettersson; Isabell Stenberg; Daniel Fält; Sofie Sköld; Nicklas Lagerqvist; [2022]
   Nyckelord :energy; temperature regulation; carbon dioxide emissions; future climate; climate modeling; RCP4.5; RCP8.5; Cytiva; Vattenfall; district heating; district cooling; comfort temperature; Uppsala; STUNS; Mapping; efficiency; environmental impact; global warming; energi; temperaturreglering; koldioxidutsläpp; framtida klimat; klimat modellering; RCP4.5; RCP8.5; Cytiva; Vattenfall; fjärrvärme; fjärrkyla; komforttemperatur; Uppsala; STUNS; Kartläggning; effektivisering; miljöpåverkan; global uppvärmning;

   Sammanfattning : This is a study conducted on behalf of the pharmaceutical company Cytiva in Uppsala via STUNS Energi by students at Uppsala university. The goal for Cytiva is to reduce their carbon dioxide footprint and the purpose of this study is to evaluate the possibilities of reducing their carbon dioxide emissions from the heating and cooling of their facilities, mainly office buildings. LÄS MER

7. 5. Experimental study of the temperature profile in an iron ore pellet during reduction using hydrogen gas

   Master-uppsats, KTH/Materialvetenskap

   Författare :Julia Brännberg Fogelström; [2020]
   Nyckelord :Iron ore; Iron oxide; Hematite pellet; Hydrogen reduction; Reduction; Intraparticle temperature; Temperature effect; Temperature profile; Järnmalm; Järnoxid; Hematitpellet; Vätgasreduktion; Reduktion; Invändig temperatur; Temperatureffekt; Temperaturprofil;

   Sammanfattning : We are facing an important challenge, to reduce the greenhouse gas emissions to make sure that we limit global warming to 2 °C, preferably 1.5 °C. Drastic changes and developing new methods may be our only chance to keep global warming under 1.5 °C. LÄS MER