Sökning: "air distribution"

Visar resultat 16 - 20 av 408 avhandlingar innehållade orden air distribution.

  1. 16. On urban air pollution measurements : analysis for identification and classification of sources

    Författare :Peter Molnár; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Vertical gradients; sulphur; pm2.5; tsp; ultra fine particles; particle size distribution; air mass trajectories; traffic emissions; dmps; edxrf;

    Sammanfattning : .... LÄS MER

  3. 17. Impact of residential wood combustion on urban air quality

    Författare :Patricia Krecl; Christer Johansson; Johan Ström; Tami Bond; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; residential wood combustion; air quality; aerosols; black carbon; polycyclic aromatic hydrocarbons; particulate matter; particle size distributions; source apportionment; positive matrix factorization; compound-specific radiocarbon analysis; Earth sciences; Geovetenskap; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : Wood combustion is mainly used in cold regions as a primary or supplemental space heating source in residential areas. In several industrialized countries, there is a renewed interest in residential wood combustion (RWC) as an alternative to fossil fuel and nuclear power consumption. LÄS MER

  4. 18. Who is responsible? : Communication, coordination and collaboration in the future Air Traffic Management system

    Författare :Fredrik Barchéus; Lena Mårtensson; Don Harris; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Air Traffic Management; Aviation; CNS ATM; Controller-Pilot Communication; Responsibility; Future Air Navigation System; Vehicle engineering; Farkostteknik;

    Sammanfattning : nternational civil aviation has experienced a steady growth in the past decades that is foreseen to continue. To overcome capacity limits of the old Air Traffic Control systems, new technology is currently being developed and introduced. LÄS MER

  5. 19. Experimental study of an intermittent ventilation system in high occupancy spaces

    Författare :Alan Kabanshi; Patrik Sörqvist; Hans Wigö; Robert Ljung; Hazim Awbi; Högskolan i Gävle; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Intermittent airflow; Indoor air quality; Perceived air quality; Thermal sensation; thermal comfort; Air movement acceptability; Convective cooling; Cooling effect.; Intermittent luftflöde; Luftstrålar; Upplevd luftkvalitet; Termisk komfort; Acceptans av luftrörelser; Konvektiv kylning; Kyleffekt.; Hållbar stadsutveckling; Sustainable Urban Development;

    Sammanfattning : Spaces with high occupancy density like classrooms are challenging to ventilate and use a lot of energy to maintain comfort. Usually, a compromise is made between low energy use and good Indoor Environmental Quality (IEQ), of which poor IEQ has consequences for occupants’ health, productivity and comfort. LÄS MER

  7. 20. Fuel Cells and Biogas

    Författare :Lars Hedström; Per Alvfors; Peter Lund; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; air bleed; biogas; carbon dioxide; carbon monoxide; current distribution; dilution; efficiency; energy conversion; energy systems; experimental; fuel cell; fuel cell systems; PEFC; poisoning; reformate; SOFC; Chemical energy engineering; Kemisk energiteknik;

    Sammanfattning : This thesis concerns biogas-operated fuel cells. Fuel cell technology may contribute to more efficient energy use, reduce emissions and also perhaps revolutionize current energy systems. The technology is, however, still immature and has not yet been implemented as dominant in any application or niche market. LÄS MER