Essays about: "Sound insulation"

Showing result 6 - 10 of 17 essays containing the words Sound insulation.

1. 6. Attenuation of fan noise with passive methods : An experimental study in the implementation of a ducted fan inside the body of a blended wing body UAV

   University essay from KTH/Skolan för teknikvetenskap (SCI)

   Author : Mustafa Kulbay; [2021]
   Keywords : ;

   Abstract : This report is about a novel approach to attenuation of fan noise in aerial vehicles, by way of implementing a ducted fan in the chassis of a four meter blended wing body plane. Three different one meter PVC pipes were used and their performances as silencers were tested by measuring the sound power level and calculating the insulation loss compared to a fan by itself. READ MORE

3. 7. Är det möjligt att uppnå kraven för FEBY Guld oavsett en byggnads placering i Sverige? : Is it possible to meet the requirements for FEBY Gold regardless of location in Sweden?

   University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

   Author : Josefin Andersson; Ebba Lindmark; [2020]
   Keywords : FEBY; heat transfer coefficient; insulation; heat loss figure; certification.; FEBY; värmegenomgångskoefficient; isolering; värmeförlusttal; certifiering.;

   Abstract : I dag sätts flera åtgärder in för att bromsa klimatförändringarna, både inom Sverige och på internationell nivå. ‘Forum för energieffektivt byggande’, FEBY, är en organisation som arbetar med att driva utvecklingen av lågenergibyggnader framåt. READ MORE

4. 8. Acoustic performance of timber volume elements

   University essay from Lunds universitet/Teknisk akustik

   Author : Oliver Olsson; [2020]
   Keywords : Impact sound insulation; Air-borne sound insulation; Cross laminated timber; CLT; Timber Volume Element; Vibration Insulation.; Technology and Engineering;

   Abstract : The thesis investigates the acoustic performance of light weight timber constructions known as timber volume elements and vibration insulation methods employed in these. Common materials used in light weight timber floor constructions and different floor configurations consisting of these materials were also studied. READ MORE

5. 9. FEM modelling of sound reduction index in partition CLT wall

   University essay from Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Teknisk akustik

   Author : Adam Hultin; Erik Hörström; [2020]
   Keywords : Technology and Engineering;

   Abstract : Constructing buildings with wood brings many advantages, especially regarding environmental aspects, which has brought an up-rise in these types of structures. However, one of the main issues regarding wooden structures is its tendency to perform poorly acoustically in lower frequencies compared to heavier structures. READ MORE

6. 10. SuperAcoustics - Development of Android application to measure sound reduction index

   University essay from Lunds universitet/Teknisk akustik; Lunds universitet/Institutionen för byggvetenskaper

   Author : Karl Bengtsson; Elliot Sandefeldt; [2019]
   Keywords : Sound reduction index; Android; Application; Acoustic measurements; Sound insulation; Technology and Engineering;

   Abstract : Urban bosättning är vanligt i dagens samhälle och en övervägande andel av befolkningen bor i lägenheter, där ljudisolering är en viktig aspekt rörande trivseln i bostaden. Användning av smartmobiler för akustiska mätningar blir allt vanligare, men inget enkelt verktyg finns idag för att mäta och räkna ut reduktionstalet. READ MORE