Sökning: "absorber"

Visar resultat 11 - 15 av 140 uppsatser innehållade ordet absorber.

  1. 11. Robust TCO’s for CIGS solar cells based on indium tin oxide

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Julia Nilsson; [2022]
    Nyckelord :photovoltaics; solar cells; thin film photovoltaics; PV; TCO; transparent conductive oxide; indium tin oxide; ITO; CIGS; solar power; sputtering; RF sputtering; radio frequency sputtering;

    Sammanfattning : The increasing energy demand, combined with the use of harmful non-renewable energy sources calls for the search of alternative methods to cover our energy need.Renewable energy can be harvested in different ways, through the movement of wind and water, biomass, or directly from the rays of the sun, as in the case of photovoltaic (PV) devices. LÄS MER

  3. 12. Design of a small-scale wave energy converter

    Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Sumaya Farjana; [2022]
    Nyckelord :small-scale point absorber; scaling factors; damping coefficient;

    Sammanfattning : In this study, a small-scale point absorber wave energy converter has been designed contemplating a full-scaled point absorber in the Mediterranean Sea state. The scaling factor for the small-scaled version has been determined by the damping coefficient calculation of the power take-off in 1:10, 1:15, and 1:20 scaling factors. LÄS MER

  4. 13. Numerical study of a vibroacoustic wave trap for e-vehicles

    Master-uppsats, KTH/Teknisk akustik

    Författare :Antoine Curien; [2022]
    Nyckelord :wheel vibrations; passive vibration control; multiple tuned mass damper; bending mode; numerical optimisation; damping; resonance; robustness; reduction methods; Hjulvibrationer; passiv vibrationsreglering; multi tuned mass damper; böjningsläge; numerisk optimering; dämpning; resonans; robusthet; modale reduktionsmetoder;

    Sammanfattning : The transition from internal combustion engine to battery electric cars is accompanied by a shift on the NVH issues damaging the passenger comfort. The rolling noise generated by the wheels and tyres is in particular characterized by an increasing attention from OEMs and car manufacturers. LÄS MER

  5. 14. Framtagning av en A-klassificerad diskret utformad ljudväggabsorbent

    Master-uppsats, Mälardalens universitet/Akademin för innovation, design och teknik

    Författare :Philip Ragnarsson; [2022]
    Nyckelord :Wall absorber; porous absorber; resonance absorber; sound absorption calculator; discreet design; Väggabsorbent; porös absorbent; resonansabsorbent; ljudabsorptionskalkylator; diskret utformning;

    Sammanfattning : The following project has been carried out in collaboration with Abstracta AB (AAB), a company based in Lammhult with specialization in sound landscapes for indoor environments. The company manufactures different types of products with sound-absorbing properties where sustainability and design are in great focus. LÄS MER

  7. 15. Effektivisering av produktionen av en ljudabsorbent i kartong

    M1-uppsats, KTH/Hållbar produktionsutveckling (ML)

    Författare :Elias Panikian Aljunidi; Joakim Skoglund; [2022]
    Nyckelord :Cardboard; streamline; manufacturing; round blades; rotary cutter; honeycomb core; product development; sound absorbent.; Kartong; papp; effektivisering; tillverkning; rullknivsblad; runda blad; honeycombkärna; produktutveckling; ljudabsorbent;

    Sammanfattning : Sontech International AB är ett företag som är specialiserade på ljudabsorbenter i metall och skum. De har tagit fram en ljudabsorbent i kartong med slitsar som går längs arket med ett avstånd på max 5 mm mellan dem. LÄS MER