Sökning: "fans in parallel"

Hittade 4 avhandlingar innehållade orden fans in parallel.

  1. 1. Aerodynamic Design and Installation Effects of Automotive Electric Cooling Fans

    Författare :Debarshee Ghosh; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Blade Element Momentum BEM ; low-pressure axial fans; electric cooling fans; automotive thermal management; CFD simulations; upstream blockage; fans in parallel;

    Sammanfattning : Electric cooling fans play a crucial role in automotive thermal management. They generate the airflow required for heat rejection from the expended coolant circulating within the heat exchanger. This thesis focuses on the aerodynamic design and installation effects of electric cooling fans or "E-fans". LÄS MER

  3. 2. Experimental Studies on the Aeroacoustics of Low-Speed Axial Fans

    Författare :Michail Vourakis; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; low-speed axial fans; electric fans; experimental; laser Doppler anemometry; low-pressure axial fans; cooling fan; aeroacoustics; rotating ring;

    Sammanfattning : Low-speed axial fans are used in thermal management systems of internal combustion and electric vehicles. These systems are compact, cost-effective, all while addressing safety concerns. On the downside, fan operation leads to flow induced noise. LÄS MER

  4. 3. Noise from Train Cooling Fans

    Författare :Yan Jiang; Mats Åbom; Thomas Carolus; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Acoustics; Akustik;

    Sammanfattning : This thesis concerns a study undertaken on a railway vehicle cooling fan system. Several design modifications were proposed and tested in the laboratory in order to evaluate different noise control measures. The most effective noise control measure involving combining lots of different measures gave 7 dB(A) noise reduction. LÄS MER

  5. 4. Från träningsoverall till trenchcoat : Tränarpositionens förändring inom svensk herrelitfotboll mellan 1960- och 2010-talet

    Författare :Robert Svensson; Mikael Quennerstedt; Björn Horgby; Christer Ericsson; Johan Norberg; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Coach; soccer; Sweden; sports; history; governmentality; IFK Norrköping; SvFF;

    Sammanfattning : The position of the coach in elite sports has changed radically over the last 50 years. Using the Swedish male elite soccer coach as an example, the aim of this thesis is to acquire a deeper understanding of this change. LÄS MER