Sökning: "phase transfer"

Visar resultat 1 - 5 av 493 avhandlingar innehållade orden phase transfer.

  1. 1. Transfer of technical training know-how : a study of consultancy services in aid practice

    Författare :Sigurd Johansson; Umeå universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; transfer; training know-how; technology transfer; aid; consultancy services; participatory case study; hydro power;

    Sammanfattning : In this thesis an aid financed attempt to transfer technical training know- how in the form of consultancy support is described and analysed. Between 1992 and 1996 Swedish consultants acted as advisers during the establishment phase of the Aswan training centre. LÄS MER

  2. 2. Single Phase Convective Heat Transfer with Nanofluids : An Experimental Approach

    Författare :Ehsan Bitaraf Hgahighi; Björn E. Palm; Elena V. Timofeeva; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanofluid; convective heat transfer; thermal conductivity; viscosity; heat transfer coefficient; performance; pumping power; Reynolds number; shelf stability;

    Sammanfattning : Nanofluids (NFs) are engineered colloids of nanoparticles (NPs) dispersed homogenously within base fluids (BFs). Due to the presence of NPs, the thermophysical and transport properties of BFs are subject to change. LÄS MER

  3. 3. Experimental Heat Transfer, pressure drop, and Flow Visualization of R-134a in Vertical Mini/Micro Tubes

    Författare :Wahib Owhaib; Björn Palm; Tassos Karayiannis; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Minichannel; microchannel; heat transfer; pressure drop; single-phase; two-phase; flow boiling; flow visualization; dry out; bubble behavior; flow pattern.; Mechanical energy engineering; Mekanisk energiteknik;

    Sammanfattning : For the application of minichannel heat exchangers, it is necessary to have accurate design tools for predicting heat transfer and pressure drop. Until recently, this type of heat exchangers was not well studied, and in the scientific literature there were large discrepancies between results reported by different investigators. LÄS MER

  4. 4. On the mechanism of heat transfer with phase change during impulse pressing of paper

    Författare :Marco F. C. Lucisano; KTH; []
    Nyckelord :Paper; High-intensity; Presses; Impulse drying; Heat transfer; Phase transitions; Heat-pipe effect; Steam; Delamination; Flashing; Permeability; Z direction;

    Sammanfattning : .... LÄS MER

  5. 5. Engineering Nanofluids for Heat Transfer Applications

    Författare :Nader Nikkam; Toprak Muhammet; Mamoun Muhammed; Yulong Ding; KTH; []
    Nyckelord :nanofluid; thermal conductivity; viscosity; heat transfer; heat transfer coefficient; HTC; SiC nanoparticles; Cu nanoparticles; mesoporous silica; CNT; microwave synthesis; Kemi; Chemistry;

    Sammanfattning : Nanofluids (NFs) are nanotechnology-based colloidal dispersion prepared by dispersing nanoparticles (NPs) in conventional liquids, as the base liquid. These advanced fluids have displayed potential to enhance the performance of conventional heat transfer fluids. LÄS MER