Essays about: "water environment"

Showing result 1 - 5 of 574 essays containing the words water environment.

  1. 1. Thermal energy management and chemical reaction investigation of micro-proton exchange membrane fuel cell and fuel cell system using finite element modelling

    University essay from KTH/Kraft- och värmeteknologi

    Author : Seán McGee; [2015]
    Keywords : 0D model; 2D model; 3D model; chemical engineering; Comsol Multiphysics; energy; environment; FC; fluid dynamics; fuel cell systems; heat transfer; JAQ; laboratory experiments; mobile charging; modeling; modelling; myFC; PEM; polymer electrolyte membrane; PowerTrekk; process engineering; proton exchange membrane; sustainability; 0D-Modell; 2D-Modell; 3D-Modell; Chemieingenieurwesen; COMSOL Multiphysics; Energie; Umwelt; FC; Fluiddynamik; Brennstoffzellensysteme; Wärmeübertragung; JAQ; Laborexperimente; mobile Ladesysteme; Modellieren; myFC; PEM; Feststoffpolymer-Brennstoffzelle; PowerTrekk; Verfahrenstechnik; Protonenaustauschmembran-Brennstoffzelle; Nachhaltigkeit; 0D-modell; 2D-modell; 3D-modell; kemiteknik; Comsol Multiphysics; energi; miljö; FC; fluiddynamik; bränslecellssystem; värmeöverföring; JAQ; laboratorieförsök; mobil laddning; modellering; myFC; PEM; polymerelektrolytmembran; PowerTrekk; processteknik; protonväxlingsmembran; hållbarhet;

    Abstract : Fuel cell systems are becoming more commonplace as a power generation method and are being researched, developed, and explored for commercial use, including portable fuel cells that appear in laptops, phones, and of course, chargers. This thesis examines a model constructed on inspiration from the myFC PowerTrekk, a portable fuel cell charger, using COMSOL Multiphysics, a finite element analysis software. READ MORE

  2. 2. Inspection ROV for Nuclear Pressure Water Reactors

    University essay from KTH/Maskinkonstruktion (Inst.); KTH/Maskinkonstruktion (Inst.)

    Author : Johan Lindgren; Thomas Larsson; [2015]
    Keywords : ;

    Abstract : This thesis was carried out at KTH in cooperation with the company WesDyne. The aim was to evaluate the possibility of using quadcopter technology in conjunction with visual inspection of nuclear reactor vessels. WesDyne already develops equipment for this purpose. READ MORE

  3. 3. Investigating Urea Vaporization in a Controlled Environment Using Infrared Thermography

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Henrik Grimler; [2015]
    Keywords : AdBlue; Infrared; Film; Evaporation; Deposits;

    Abstract : As the emission legislation becomes more stringent, higher demands are put on the aftertreatment system in trucks. For dealing with nitrous oxides, AdBlue® (urea–water solution) is injected into the exhausts which evaporates and reduces nitrous oxides to nitrogen. READ MORE

  4. 4. Using Geographic Information Systems (GIS) to Analyze Possible Relations between School Choice and Segregation

    University essay from KTH/Geoinformatik

    Author : Carine Hals; [2015]
    Keywords : GIS; school choice; segregation; social index; socioeconomic background;

    Abstract : In 1992, the Swedish education system was reformed and by that, school choice was introduced. The intention of the reform was that competition between schools would improve the level of education; however, the results among Swedish pupils have deteriorated and the differences between schools have increased since the introduction. READ MORE

  5. 5. Isothermal Oxidation Study of Gd2Zr2O7/YSZ Multi-Layered Thermal Barrier Coatings

    University essay from Högskolan Väst/Avd för tillverkningsprocesser

    Author : Ran Li; [2015]
    Keywords : Multi-layered thermal barrier coating; isothermal oxidation; suspension plasma spray;

    Abstract : Conventional yttria stabilized zirconia (YSZ) are widely used in the gas turbine to protect the substrate material from high temperature. But the common YSZ top coatings have limitations at higher temperature (above 1200℃) due to significant phase transformation and intensified sintering effect. READ MORE