Sökning: "air leakage"

Visar resultat 1 - 5 av 43 avhandlingar innehållade orden air leakage.

  1. 1. Air flows in building components

    Detta är en avhandling från Byggnadsfysik LTH, Lunds Tekniska Högskola

    Författare :Johnny Kronvall; [1980]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; air flow; air movement; building component; fluctuating pressure; leakage; pressurization; permeability; porosity; surface roughness; entrance; bend; exit pressure loss; pressure drop; infiltration; convection;

    Sammanfattning : This work deals with different aspects of air movements in building components . The investigation shows to what degree the concept of fluid mechanics can be applied to problems concerning air flows in building Components. The applicable parts of fluid mechanics are presented as thoroughly as possible. LÄS MER

  2. 2. Air and Water Tightness in Building Envelopes - Evaluation of Methods for Quality Assurance

    Detta är en avhandling från Institutionen för byggnader och installationer

    Författare :Fredrik Gränne; KTH.; [2001]
    Nyckelord :Roofing; roof membrane; durability; waterproofing; leakage; wind-load; non-destructive testing; NDT; BSL4; BLS3; air leakage; building envelope;

    Sammanfattning : The purpose of this work is to contribute to a process formaking buildings with good function and to avoid prematurefaults.The design, construction and installation of low-slopedroofs are important parts of creating a durable building. LÄS MER

  3. 3. Studies on Building Air Leakage -a transient pressurisation method, measurements and modelling

    Detta är en avhandling från Institutionen för byggnader och installationer

    Författare :Björn Mattsson; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; air change rate; Airtightness; CFD-simulations; moisture transport; air leakage; mould growth; cold attics; transient pressurisation;

    Sammanfattning : Airtightness of the building envelope is a key factor for good performance of a building. The main part of this thesis deals with the exploration of a transient pressurisation method for air leakage measurements.In the transient method, an enclosure is pressurised to a desired pressure. The air flow into the enclosure is then stopped. LÄS MER

  4. 4. Safety and biological aspects of present techniques of haemodialysis

    Detta är en avhandling från Institutionen för byggnader och installationer

    Författare :Per Jonsson; Umeå universitet.; [2006]
    Nyckelord :haemodialysis; safety; leakage current; central dialysis catheter; microbubbles; microemboli; air contamination; transfusionsmedicin; transfusionsmedicin;

    Sammanfattning : Introduction: Haemodialysis (HD) is a treatment in which blood from the patient is lead through a tubing system into a dialysis device in a extracorporeal circuit. This circuit contains semipermeable membranes (dialyzer). Blood with uraemic toxins flows on one side, and a salt solution flows on the other side. LÄS MER

  5. 5. Investigation of AC electrical machine stators with fractional conductor windings

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Henrik Grop; KTH.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; windings; leakage; large machines; induction motor construction; TECHNOLOGY Electrical engineering; electronics and photonics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik;

    Sammanfattning : Industry always searches the least expensive solution for a machine design. Therefore, there is a need for integrating different customer ordered machines within the same frame, while keeping the foundation of the mechanical design constant. LÄS MER