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Hittade 5 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Parametric Study of Separation in Outlet Diffuser of Rocket Nozzle Cooling Channel Rig : The Effect of Heat Flux and Angle of Outlet Diffuser for Rectangular-to-Circular Cross Section Transitions

    Master-uppsats, KTH/Farkostteknik och Solidmekanik; KTH/Kraft- och värmeteknologi

    Författare :Hector Älfvåg; [2021]
    Nyckelord :;

    Sammanfattning : The use of natural gas with high methane content as rocket fuel has gained substantial industrial attention over the past number of years. Several actors including SpaceX and Blue Origin are developing natural gas powered rocket engines. LÄS MER

  3. 2. Magnetitinblandad gjutasfalt : Uppvärmning och avsvalning

    Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Ludvig Berg; Johannes Wanselius; [2021]
    Nyckelord :magnetit; asfalt; gjutasfalt; uppvärmning; avsvalning; SMMART; FEM; COMSOL Multiphysics; Nordreälvbron;

    Sammanfattning : Uppvärmningen av gjutasfalt har traditionellt sett skett med fossila bränslen. Projektet SMMART undersöker möjligheterna att med inblandning av magnetit i asfaltsmassan kunna nyttja mikrovågsteknik för uppvärmning. Detta examensarbete är uppdelat i två delar. LÄS MER

  4. 3. Cooling Potential of Methane in Rocket Nozzle Cooling Channels : A Conjugate Heat Transfer Analysis

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

    Författare :Marcus Pettersson; [2019]
    Nyckelord :;

    Sammanfattning : The use of hydrocarbons as fuel in rocket propulsion has been of great interest to the aerospace industry in recent years. Specifically, natural gas with a high content of methane has taken the interest of several actors, among them Sweden-based GKN Aerospace who in collaboration with KTH Royal Institute of Technology have started the MERiT project. LÄS MER

  5. 4. Coke characterization on HZSM-5, Fe/ZSM-5, Ni/ZSM-5, and Fe-Ni/ZSM-5 from Catalytic Fast Pyrolysis of Biomass

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Isa Duman; [2018]
    Nyckelord :Biomass; Bio-Oil; Catalytic Fast Pyrolysis; Coke; ZSM-5; Biomassa; Bio-Olja; Katalytisk Pyrolys; Koks; ZSM-5;

    Sammanfattning : The combustion of fossil fuels has for a long time been a problem from an environmental and sustainability point of view, especially when it comes to the emissions of atmospheric carbon dioxide. The environmental concern has for instance shifted the attention towards finding new sustainable alternatives for producing chemicals and fuels, as a substitute to today’s dependence on fossil based crude oil. LÄS MER

  7. 5. Application of sorption-enhanced catalysis to ethanol reforming

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Jacky Ho; [2016]
    Nyckelord :Catalysis; adsorption; Li4SiO4; CaO; Ethanol reforming;

    Sammanfattning : Lithium orthosilicate (Li4SiO4) is known to be a high temperature CO2 capture material. This work was focused on comparing Li4SiO4 to the extensively studied CaO as an adsorbent in sorption enhanced catalysis. Thermogravimetric analysis was used to study the effects of sorption temperature and compaction on Li4SiO4 using 15vol% CO2 in N2. LÄS MER