Sökning: "tubes"

Visar resultat 1 - 5 av 257 avhandlingar innehållade ordet tubes.

  1. 1. Preheating of ambient air by a system of earth tubes as a heat source for buildings

    Författare :Carl-Eric Nilsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; earth tubes; preheating of air; corrugated plastic pipes; natural heating; heat extraction by air; fictitious temperature; earth heating; thermal pulses; earth heat exchanger; Heat convection coefficient; heat tubes;

    Sammanfattning : .... LÄS MER

  3. 2. Hydrodynamics, Erosion and Heat Transfer in Pressurized Fluidized Beds

    Författare :Jan Wiman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; hydrodynamics erosion; heat transfer; tubes; fluidized bed; gas flow; pressurized fluidized bed; bubble;

    Sammanfattning : Measurements of hydrodynamics, local tube erosion and local instantaneous bed-to-tube heat transfer were carried out in a cold, pressurized, fluidized bed with different horizontal tube banks. The influence of pressure, fluidization velocity, particle size and tube-bank geometry was studied. LÄS MER

  4. 3. Fluid dynamics and heat transfer in fluidized beds - with applications to boilers

    Författare :Filip Johnsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; particle concentration; bed expansion; fluidized beds; non-slugging; fluidized bed boilers; tubes; fluid dynamics; fluidization regimes; bottom bed; internals; heat transfer; modelling;

    Sammanfattning : .... LÄS MER

  5. 4. Hydrodynamics of a fluidized bed : influence of pressure and fluidization velocity

    Författare :Per Olowson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fluidized bed; tubes; bubble; particle drag force; through-flow velocity; minimum fluidization velocity; pressure probe; capacitance probe; pressurized fluidized bed; internals; gas flow distribution;

    Sammanfattning : .... LÄS MER

  7. 5. Synthesis and applications of analogues of Tröger's base as molecular tubes, receptor and ligands

    Författare :Anna Hansson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organisk kemi; Organic chemistry; bis-crown ether analogue; molecular recognition; molecular tubes; Tröger s base; dihalo-analogues;

    Sammanfattning : Tröger’s base was synthesized for the first time in 1887. The molecule is rigid, C2-symmetric and has a 90° angle, forming a chiral hydrophobic pocket. In this thesis, the synthesis of new analogues of Tröger’s base is described. 2- and 3-halo-substituted anilines have for the first time been condensed to Tröger’s base analogues. LÄS MER