Essays about: "semi-empirical approach"

Found 5 essays containing the words semi-empirical approach.

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

   University essay from KTH/Kraft- och värmeteknologi

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

   Abstract : 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. READ MORE

3. 2. Study of semi-empirical methods for ship resistance calculations

   University essay from Uppsala universitet/Tillämpad mekanik

   Author : Emil Petersson; [2020]
   Keywords : ;

   Abstract : In the early ship design process a quick overview of which shipdesign that could be the optimal choice for the intended usage needsto be investigated. Therefore the feasibility and accuracy ofinterpolating between measurement data from model resistance serieswhen estimating unknown hulls were conducted. READ MORE

4. 3. Optimization analysis of secondlifebatteries integration in fastchargersfor electric vehicles inSpain

   University essay from KTH/Energi och klimatstudier, ECS

   Author : Pasquale de Maio; [2017]
   Keywords : fast-charging station; electric vehicle; energy storage system; second-life batteries; electricity tariff; Spain;

   Abstract : This project investigates the viability of using reconditioned batteries, which have lost part of their original capacity while powering electric vehicles (EVs), to minimize the expenses of fast-charging infrastructures under the three charging scenarios where fast-charging mode is likely to be needed the most. The analysis is conducted for the Spanish scenario and considers the retail electricity tariff that best suits the requirements of a FCS. READ MORE

5. 4. Experimental Setup for Validating Simulated Local Structure Responses for High-speed Craft in Waves

   University essay from KTH/Marina system

   Author : Xiangyu Lei; Jonas Persson; [2017]
   Keywords : high-speed craft; slamming events; experiments; validation; structural responses; Master;

   Abstract : Using scantling codes such as DNV or ISO for designing high speed craft has been a routine for many constructors. However, the validity of these design methods are to be questioned, especially when dealing with modern material concepts and structural layouts, since they are based on data from ships designed in the 1960ies and 1970ies using semi-empirical methods containing substantial uncertainties and limitations. READ MORE

6. 5. Development of a non-linear hydrodynamic maneuvereing model of a diver delivery vehicle

   University essay from KTH/Marina system

   Author : Johan Pettersson; [2017]
   Keywords : ;

   Abstract : The SEAL Carrier is a marine hybrid craft with capacity to travel both on the surface and completely submerged with main objective to transport a group of divers. The craft is developed for transporting a unit of combat divers in and out the of area of operation where the high speed at surface and low signature when submerged are key features. READ MORE