Sökning: "Air gap"

Visar resultat 1 - 5 av 136 uppsatser innehållade orden Air gap.

1. 1. Elite Athletes’ Travel Behaviour to/from Sport Events : A Case Study of Biathlon

   Master-uppsats, Mittuniversitetet/Institutionen för ekonomi, geografi, juridik och turism

   Författare :Marie Lerho; [2024]
   Nyckelord :transportation; sport tourism; elite athletes; environmental sustainability; travel behaviour; public transportation; environmental concern; value-action gap; high-cost situation;

   Sammanfattning : This thesis analyses how elite athletes travel to/from sport events and which barriers prevent them from engaging in a more sustainable travel behaviour. For this purpose, unstructured interviews with elite athletes were conducted to gain an in-depth understanding about travel experiences and decision-making from elite athletes’ perspective. LÄS MER

3. 2. JÄMFÖRELSE MELLAN TRÄREGELVÄGG OCH LÅGENERGI LÄTTBETONGVÄGG : Byggteknik, värmeförmåga och byggekonomi.

   Uppsats för yrkesexamina på grundnivå, Mälardalens universitet/Akademin för ekonomi, samhälle och teknik

   Författare :Marwan Kahachi; [2024]
   Nyckelord :Low energy concrete; Light concrete; Wooden stud wall; U-value; Moisture;

   Sammanfattning : Commencing with a foundational understanding of the vital role energy modeling plays in optimizing building performance, this study meticulously compares a lowenergy lightweight concrete wall with a wooden stud wall featuring an air gap. The objective is to determine the most advantageous wall type for the construction phase, considering factors such as energy efficiency and cost-effectiveness. LÄS MER

4. 3. An Evaluation Study of Leak Testing Technologies for Watertight Plate Heat Exchangers : Fast and sustainable leak testing technology for high energy efficiency products

   Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för matematik och naturvetenskap

   Författare :Fritjof Nilsson; Yanjun Peng; [2023]
   Nyckelord :Leak rate; Optimization; Pressure Decay; Vacuum Technology; Volume; Läckhastighet; Optimering; Tryckfall; Vakuum Teknologi; Volym;

   Sammanfattning : Background: One part of manufacturing a Plate Heat Exchanger (PHE) is to leak test them before delivery. Today, helium is used extensively in leak testing. How-ever, it is unsustainable to use helium in leak testing, because of its non-renewability and therefore becoming more and more expensive. Also, this technology is relatively complex. LÄS MER

5. 4. ... och benen är fulla med spring! Barns bristande rätt till en god utemiljö i förskolan

   Kandidat-uppsats, Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

   Författare :Emelie Rosqvist Ljungbäck; [2023]
   Nyckelord :Förskola; utemiljö: utevistelse; miljölagstiftning; miljöförvaltning; hälsoskydd; tillsynsmyndighet; tillsynsansvar; Earth and Environmental Sciences;

   Sammanfattning : Today, 86% of children between the age of 1 and 5 are enrolled in preschools in Sweden. The outdoor environment is important to support children’s development, health, and wellbeing. Children’s perception of what an appropriate outdoor environment is often differs from what adults consider to be a god and healthy outdoor environment. LÄS MER

7. 5. Status Mapping of tank to grave management of Low-GWP refrigerants.

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Sandra Parra Gimeno; [2023]
   Nyckelord :Refrigerant; Blends; Synthetic low-GWP refrigerant; Natural refrigerant; Global Warming Potential GWP ; Tank-to-grave; Interviews.; Köldmedier; Blandning; Globalt uppvärmningspotential GWP ; Låg-GWP köldmedier; Naturligt köldmedier; installation till destruktion; Intervjuer.;

   Sammanfattning : Refrigeration plays a vital role today in various residential, commercial, and industrial processes, requiring refrigerants to facilitate the cooling or heating processes. Over time, refrigerants have undergone significant changes to meet technological, social, environmental, and economic needs. LÄS MER