Sökning: "FDS"

Visar resultat 11 - 15 av 165 uppsatser innehållade ordet FDS.

1. 11. The Heat reducing Effects of Reflective Clothing in Firefighting : A study on the efficiency of reflective textiles in personal protective equipment

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

   Författare :Albin Henning; [2022]
   Nyckelord :Firefighter; Reflective textiles; Radiant heat; Protective equipment;

   Sammanfattning : Modern firefighter protective equipment is excellent at protecting firefighters from surrounding heat, but how effective is at deflecting incoming radiant heat, and would the use of more reflective textiles, be able to further increase the equipment’s protective properties? This study aims to understand the different properties that reflective materials, compared to standard firefighter outer layers, have against radiative heat flux. The textiles of firefighter turnout gear and the reflective textiles used in the smelting industry have been examined when exposed to varying levels of radiant heat in a cone calorimeter. LÄS MER

3. 12. Visibility in Smoke With Different Extinction Coefficients

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Lea Elhokayem; [2022]
   Nyckelord :Visibility; smoke; exit sign; extinction coefficient; visibility constant; evacuation; Technology and Engineering;

   Sammanfattning : Visibility in smoke has since the 1970s gained some attention, mostly after Tadahisa Jin ran the experiments which helped him develop todays widely used visibility equation. By showing that visibility can be assumed to be inversely proportional to the extinction coefficient by a visibility constant (equal to 8 for light emitting sign and 3 for light reflecting), Jin opened up new doors for researchers who were testing out his theory by going around experimenting in different ways and also by showing that there is way for more research to be done. LÄS MER

4. 13. Simulating cable fires in Fire Dynamics Simulator : Based on small scale testing in cone calorimeter

   Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Byggkonstruktion och brand

   Författare :Hugo Zacharoff; [2021]
   Nyckelord :Cable fires; FDS; cone calorimeter;

   Sammanfattning : In a society increasingly more influenced by technology and electricity, electrical and computer cables will play a more vital role in humans’ everyday life. With an increasing number of cables being introduced into society, the risk of fires caused by or involving cables will increase and become a more common danger to property and human lives. LÄS MER

5. 14. A COMPARATIVE STUDY OF TRAVELLING FIRE IN LARGE SPACES WITH MULTI-ZONE FIRE MODEL AND FDS

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Paolo Bertoli; [2021]
   Nyckelord :Multi-Zone fire model; FDS; Large enclosures; Travelling fire.; Technology and Engineering;

   Sammanfattning : A knowledge of far field temperatures is valuable for Performance Based Design structural analysis and life safety analysis, where a parametric study is needed. A fire model using multiple zones called a multi zone (MZ) fire model has in previous studies shown good potential as an analytical tool for predicting far field temperatures in large compartments. LÄS MER

7. 15. Modellering och simulering av den isolerande förmågan i installationsschakt

   Kandidat-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Christian Rosqvist; [2021]
   Nyckelord :Installationsschakt; FDS; Comsol; Schaktvägg; Brandteknisk Klass; Brandcell; Isolering; Technology and Engineering;

   Sammanfattning : Inom större byggnader används ofta installationsschakt, vilket är en brandteknisk avskild vertikal förbindelse mellan våningsplan för kanaler av olika media. Genom att använda ett sådant schakt går det att undvika isolering, brand-/brandgasspjäll och liknande åtgärder när rör- och kanalgenomföringar går igenom brandceller. LÄS MER