Sökning: "cold surface layer"

Visar resultat 1 - 5 av 26 uppsatser innehållade orden cold surface layer.

  1. 1. Development of HVAC simulations for truck cabins using OpenFOAM

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Junaid Haider; [2023]
    Nyckelord :Computational Fluid Dynamics; OpenFOAM; Conjugate Heat Transfer; chtMultiRegionFoam;

    Sammanfattning : In regions with cold climates, a layer of ice often forms on vehicle windshields, whichobstructs the driver’s view. To address this issue, vehicles are equipped with internal defrosters. However, at Scania, the evaluation of defroster design performancecurrently relies on time-consuming and costly physical testing. LÄS MER

  3. 2. Energieffektivisering av en oisolerad torpargrund : En jämförelse mellan en Hasopor/skumglasgrund och två uteluftsventilerade grundkonstruktioner

    M1-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Karolina Eriksson; [2023]
    Nyckelord :Hasopor; Hasoporgrund; skumglas; skumglasgrund; torpargrund; krypgrund; energieffektivisering; crawlspace; crawl-space; foam glass foundation; foam-glass;

    Sammanfattning : Majoriteten av de ca 400 000 småhus i Sverige som är byggda innan 1931 har en mullbänk eller torpargrund som grundkonstruktion, ofta helt eller delvis oisolerad med låg energiprestanda som följd. I detta arbete utreds genom en fallstudie vilka best-practice lösningar det finns att energieffektivisera en äldre torpargrund på och hur en Hasopor/skumglasgrund står sig mot dessa lösningar. LÄS MER

  4. 3. Fibre volume fractions’ and printing directions’ effects on tribological and mechanical properties in FDM printed carbon fibre reinforced PEEK : Suitability assessment of FDM printed PEEK-CF to act in a steam engine’s ball joint, by analysis of compressive properties, impact strength, friction and wear

    Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Författare :William Tönnberg; [2022]
    Nyckelord :Ranotor; steam engine; PEEK; polyether-ether-ketone; carbon fibre reinforced PEEK; impact strength; compressive strength; compressive modulus; friction; wear; tribology; FFF; FDM; 3D-printing; printing parameters;

    Sammanfattning : The purpose with this study was to investigate FDM/FFF manufactured carbon fibre reinforced PEEK and assess its suitability to act as a sealing- and bearing material in a modern steam engine’s ball joint. The steam engine is totally free from oil due to the risk of water- and steam contamination. LÄS MER

  5. 4. Monitoring of heat exchanges in thesnowpack of Foxfonna glacier, Spitzbergen,Svalbard.

    Kandidat-uppsats, Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

    Författare :Thibault Desjonquères; [2022]
    Nyckelord :Glaciers; Glaciology; Svalbard; Geophysics; Superimposed Ice; Foxfonna; Geology.; Physics and Astronomy;

    Sammanfattning : The processes of meltwater storage in firn and the impact of refreezing on firn-coveredglaciers have been investigated on the Greenland ice-sheet. On Svalbard, climate changepromotes the disappearance of firn on glaciers. LÄS MER

  7. 5. Evaluation of pollutant removal performance of stormwater biofilters in a Swedish climate : Comparison of three different filter media designs

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Anna Träff; [2022]
    Nyckelord :Stormwater biofilter; stormwater treatment; cold climate; filter media design; low impact development;

    Sammanfattning : In the recent century, a process of urbanization has increased globally. Previously rural or natural land have been converted into impervious surfaces to make way for housing, industries, and roads. This anthropogenic process has resulted in an increased amount of surface runoff from precipitation, so-called stormwater. LÄS MER