Sökning: "Ventilated cavity"

Hittade 5 avhandlingar innehållade orden Ventilated cavity.

  1. 1. Ventilerad luftspalt i yttervägg : luftomsättningar och konvektiv fukttransport

    Författare :Jörgen Falk; Avdelningen för Byggnadsmaterial; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Moisture transport; Drying time; Strapping; Ventilation drying rate; Air change rate; Thermal balance; Ventilated cavity; Moisture balance; EIFS;

    Sammanfattning : Allvarliga fuktproblem i ytterväggar med regelstomme av trä och fasadskikt av puts på isolering har under senare delen av 2000-talet konstaterats i Sverige. Ett alternativ byggsätt för den putsade fasaden är att putsa mot ett skivunderlag som sitter monterat mot läkt så att en luftspalt bildas. LÄS MER

  3. 2. Fires in Narrow Construction Cavities : Fire Dynamics and Material Fire Performance

    Författare :Karlis Livkiss; Avdelningen för Brandteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fire; Ventilated façade; flame height; Stone wool; expanded polystyrene; Fire Dynamics Simulator FDS ;

    Sammanfattning : There have recently been devastating fire incidents related to fire spread over ventilated façades. These incidents indicate gaps in our understanding of the fire behaviour of façades. This thesis takes a bottom-up approach to investigating fire behaviour in materials and elements associated with narrow cavities in modern constructions. LÄS MER

  4. 3. Rendered rainscreen walls - cavity ventilation, ventilation drying and moisture-induced cladding deformation

    Författare :Jörgen Falk; Avdelningen för Byggnadsmaterial; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Over the past five years, moisture damages in external walls of wood frame structure and rendering on insulation as a cladding has been a widely debated subject which has received a lot of attention. In the light of this, the interest in an alternative construction method where rendering is applied on boards instead of insulation has increased. LÄS MER

  5. 4. Development of Numerical Methods for Turbulent Flow in Complex Rotating Systems

    Författare :Peter Hedberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; fluid mechanics; computer code; rotating geometries; turbomachinery;

    Sammanfattning : A computer code has been developed to predict three-dimensional incompressible turbulent flow in complex rotating geometries. The application in mind is turbomachinery in general. However such a code is able to treat a large number of problems in fluid mechanics. LÄS MER

  7. 5. The Effect of CO2-Pneumoperitoneum on Ventilation Perfusion Distribution of the Lung

    Författare :Christof Strang; Göran Hedenstierna; Suzanne Odeberg-Wernerman; Uppsala universitet; []
    Nyckelord :lung; atelectasis; computed tomography; multiple inert gas elimination technique; model; pig; Pa–ECO2 ratio; surgery; laparoscopy; lung; blood flow; single photon emission computed tomography; ventilation perfusion distribution; gas exchange; hypoxic pulmonary vasoconstriction; MEDICINE; MEDICIN;

    Sammanfattning : Laparoscopic operations are a common and popular way for abdominal procedures. They are usually performed by insufflation of carbon dioxide (CO2) into the abdominal cavity. However, insufflation of CO2 may interfere with cardiac and circulatory as well as respiratory functions. The CO2-pneumoperitoneum (PP) may cause hypercarbia and acidosis. LÄS MER