Sökning: "air pass"

Visar resultat 11 - 15 av 38 avhandlingar innehållade orden air pass.

1. 11. Moisture permeability of mature concrete, cement mortar and cement paste

   Författare :Göran Hedenblad; Avdelningen för Byggnadsmaterial; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; moisture transport; cement paste; moisture permeability; concrete; moisture flow; cement mortar;

   Sammanfattning : Moisture permeability tests were performed on specimens of concrete, cement mortar and cement paste with the bottom side in water or in moist air and the upper side in a relative humidity of 33 %. The distribution of the relative humidity within the specimen was measured, at stationary conditions, as well as the amount of water which pass through the specimen. LÄS MER

3. 12. Design of Internal Cooling Passages: Investigation of Thermal Performance of Serpentine Passages

   Författare :Waseem Siddique; Torsten Fransson; Bengt Sundén; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gas turbine; heat transfer; CFD; Serpentine passages; SRA - Energy; SRA - Energi;

   Sammanfattning : Gas turbines are used to convert thermal energy into mechanical energy. The thermal efficiency of the gas turbine is directly related to the turbine inlet temperature. LÄS MER

4. 13. Moisture Safety in Wood Frame Buildings - Blind evaluation of the hygrothermal calculation tool WUFI using field measurements and determination of factors affecting the moisture safety

   Författare :Solof Mundt Petersen; Avdelningen för Byggnadsfysik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Blind Validation; Moisture Safety; Hygrothermal Calcualtion Tool WUFI; Wood Frame Buildings;

   Sammanfattning : Due to increased awareness of climate change and higher energy costs, well-insulated buildings have become more common. Furthermore, interest in the use of wood in building to produce more carbon dioxide-efficient buildings has increased. LÄS MER

5. 14. Large Eddy Simulation of Turbulent Combustion in PPC and Diesel Engines

   Författare :Rickard Solsjö; Strömningsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; large eddy simulation LES ; turbulent spray combustion; Lagrangian particle tracking LPT ; diesel engines; partially premixed combustion PPC engines.;

   Sammanfattning : This thesis deals with large eddy simulations (LES) of turbulent combustion processes in direct injection internal combustion (IC) engines. Modeling of direct injection IC engine combustion involves modeling of turbulent spray/gas two-phase flow, modeling of chemical reactions of large hydrocarbon fuels and coupling of chemistry with turbulent flows. LÄS MER

7. 15. Travel demand and environmental policy

   Författare :Jonathan Stråle; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

   Sammanfattning : In a simple theoretical set-up, the “regulator” is only interested in the social cost of carbon, but in a second best world when carbon pricing may be problematic in some sectors (such as international travel) the effects of alternative instruments will depend on the income and price elasticities of the demand for the good, tax effects, potential behavioral effects, and other determinants of demand. Understanding how these factors affect travel demand is therefore of great interest for policy. LÄS MER