Sökning: "nedbrytningsmekanism"

Hittade 2 uppsatser innehållade ordet nedbrytningsmekanism.

1. 1. Hydrogen Fuel Cell Lifetime Simulation in Marine Applications

   Master-uppsats, KTH/Kraft- och värmeteknologi

   Författare :Yifeng Zhong; [2022]
   Nyckelord :maritime transportation; FEMFC; lifetime simulation; degradation mechanism; empirical relationship; semi-empirical approach; sjötransport; PEM-bränsleceller; livslängdssimulering; nedbrytningsmekanism; empiriskt samband; semi-empiriskt tillvägagångssätt;

   Sammanfattning : Maritime transportation emits about 3% of global greenhouse gas, International Maritime Organization (IMO) aims to reduce shipping’s emissions by 50% with respect to 2008 levels. Proton exchange membrane fuel cells (PEMFCs) are considered among the most promising clean technologies for decarbonizing the maritime sector. LÄS MER

3. 2. Enhanced dielectric AC breakdown strength of polyethylene using voltage stabilizing additives

   Master-uppsats, Lunds universitet/Centrum för analys och syntes

   Författare :Klas Esbo; [2016]
   Nyckelord :cross-linked polyethylene; LDPE; low density polyethylene; polyethylene; voltage stabilizing additives; fast avalanche breakdown; dielectrical breakdown strength; High voltage cable; HVAC; XLPE; Weibull distribution; AC breakdown; materials chemistry; materialkemi; Technology and Engineering; Chemistry;

   Sammanfattning : There is currently a need to increase the voltage level in high voltage transmission and distribution systems in order to transmit power in a more efficient way. However, the insulation of the conductor in high voltage alternating current (HVAC) cables needs to be improved in order to withstand these high voltages. LÄS MER