Sökning: "nozzle"

Visar resultat 1 - 5 av 181 uppsatser innehållade ordet nozzle.

1. 1. Jetbrandtester och vätgas : En litteratur- och intervjustudie om försök med vätgasjetflammor

   Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Författare :Nils Stridsberg; [2024]
   Nyckelord :Hydrogen; jet flames; rescue service; standards; jet fire testing; jet fires; Vätgas; jetflammor; räddningstjänst; standarder; jetbrandtester; jetbränder;

   Sammanfattning : Vätgas är en energibärare som kan vara en av pusselbitarna i omställningen till en mer klimatneutral värld. Infrastrukturen byggs ut, industrin växer och vätgasfordon blir vanligare. LÄS MER

3. 2. Calibration of the Measurement System for Methane Pyrolysis in Rocket Nozzle Cooling Channels

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

   Författare :Jennifer Ly; [2023]
   Nyckelord :Correlational method; gas analysis; real time measurements; speed of sound; thermal conductivity; methane pyrolysis; rocket nozzle cooling; Korrelationsmetod; gasanalys; mätningar i real tid; ljudhastighet; värmeledningsförmåga; metanpyrolys; kylning av raketmunstycken iv;

   Sammanfattning : Methane-based rocket propellant is gaining traction as a green technology with advantages in sustainability, cost-effectiveness, and performance. However, under high temperatures found in rocket nozzle cooling channels, methane can undergo thermal decomposition known as methane pyrolysis, resulting in the generation of hydrogen and solid carbon. LÄS MER

4. 3. Conceptualisation, Implementation and Commissioning of a Controlled Pyrolysis Rig : KTH Master Thesis Report

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

   Författare :Arjun Monga; [2023]
   Nyckelord :coke deposition; pyrolysis; catalysis; methane; sample; cooling channels; regenerative cooling; rocket engines; koksavsättning; pyrolys; katalys; metan; prov; kylkanaler; regenerativ kylning; raketmotorer;

   Sammanfattning : Liquid methane has seen popular interest from industry and academia as a next-generation rocket fuel due to its favorable performance characteristics and potential for extra-terrestrial in-situ resource utilisation. Since the rocket combustion chamber and nozzle are subject to high heat loads, regenerative cooling is a standard method to achieve lower temperatures. LÄS MER

5. 4. Preliminary Design of a 30 kN Methane-Oxygen-powered Electric-Pump-fed Liquid Rocket Propulsion System

   Master-uppsats, Luleå tekniska universitet/Rymdteknik

   Författare :Vikramjeet Das; [2023]
   Nyckelord :rocket engine; liquid rocket; methalox; electropump; LRPS; LPRE; liquid methane; electric pump feed system;

   Sammanfattning : The design of a liquid rocket propulsion system, unlike that of a standalone system, is intertwined with the overall development of a number of associated systems and is influenced by a multitude of conditions and considerations: from the requirements needed to accomplish the mission to the rationalizations involved behind the development of each rocket system and/or component. In my thesis, the preliminary design of a “new generation” 30 kN rocket engine driven by an electric pump feed system and running on liquid methane and liquid oxygen is performed. LÄS MER

7. 5. The effect of nozzle geometry on bubble formation : Physical modeling by air in a water tank

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

   Författare :Mhd Osman Bernieh; [2023]
   Nyckelord :Nozzle geometry; bubble formation; water tank model; bubble flow; Munstycksgeometri; bubbelbildning; vattentankmodell; bubbelflöde;

   Sammanfattning : The bubble flow is used for different application in steel production and refining processes. It plays in indispensable role in the ladle refining process such as for homogenization and inclusion removal. Hence, it is important to understand the effect of the nozzle outlet geometry on the bubble formation. LÄS MER