Sökning: "forced convection"

Visar resultat 31 - 35 av 36 avhandlingar innehållade orden forced convection.

  1. 31. Equilibrium and Kinetic Considerations in Refining of Silicon

    Författare :Jesse Franklin White; Sichen Du; Kenneth Coley; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The purity requirements for photovoltaic-grade (PV) silicon are very stringent. In PV applications, purified silicon is either doped with boron or phosphorous, so the levels of these particular elements have to be tightly controlled. LÄS MER

  3. 32. Melt-water interactions in a reactor containment : from integrated assesment to phenomenological studies

    Författare :Timo Okkonen; KTH; []
    Nyckelord :;

    Sammanfattning : This thesis examines melt-water interactions for theex-vessel phase of a severe reactor accident. The studies startfrom the development of an assessment methodology that tiestogether the vessel melt release scenarios and the mainprocesses affecting the melt-water interaction effects in thereactor containment. LÄS MER

  4. 33. Investigations of Flow Patterns in Ventilated Rooms Using Particle Image Velocimetry : Applications in a Scaled Room with Rapidly Varying Inflow and over a Wall-Mounted Radiator

    Författare :Amir Sattari; Ivo Martinac; Mats Sandberg; Dirk Müller; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Particle Image Velocimetry PIV ; experimental study; structured light 3D scanning system; ventilation; varying flow rate; room model; wall-mounted radiator; air; water; flow; Particle Image Velocimetry PIV ; experimentell studie; scanningsystem för strukturerat 3D-ljus; ventilation; varierande tilluftsflöde; rumsmodell; väggmonterad radiator; Engineering Mechanics; Teknisk mekanik; Byggvetenskap; Civil and Architectural Engineering; Energy Technology; Energiteknik;

    Sammanfattning : This thesis introduces and describes a new experimental setup for examining the effects of pulsating inflow to a ventilated enclosure. The study aimed to test the hypothesis that a pulsating inflow has potential to improve ventilation quality by reducing the stagnation zones through enhanced mixing. LÄS MER

  5. 34. In-situ analysis of process characteristics in Directed Energy Deposition

    Författare :Tobias Hauser; Alexander Kaplan; Joerg Volpp; Barbara Previtali; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Produktionsutveckling; Manufacturing Systems Engineering;

    Sammanfattning : In recent years, the interest in Additive Manufacturing on an industrial scale has risen due to the various new processes and the increase in potential use cases. In this thesis, the two Additive Manufacturing processes, Wire Arc Additive Manufacturing and Laser Metal Deposition were investigated. LÄS MER

  7. 35. A Study on the Influence of Steel, Slag or Gas on Refractory Reactions

    Författare :Sune Jansson; Pär Jönsson; Lauri Holappa; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Metallurgical process engineering; Metallurgisk processteknik;

    Sammanfattning : During the production of steel the oxide inclusion content partly depends on the reaction of the melt with the furnace lining, the ladle lining and the pouring system. The refractory material may be eroded by the molten steel and slag as well as corroded through chemical reactions with the slag and molten steel and the deoxidation products. LÄS MER