Sökning: "leakage detection"

Visar resultat 1 - 5 av 55 uppsatser innehållade orden leakage detection.

1. 1. 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

3. 2. 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

4. 3. Undersökning och täthetsmätning av små mekaniska komponenter.Leakage testing and analysis on small mechanical devices

   Uppsats för yrkesexamina på grundnivå, Örebro universitet/Institutionen för naturvetenskap och teknik

   Författare :Ludvig Domfors; Alexander Andersson; [2023]
   Nyckelord :Leak detection; small mechanical components; Electro-Explosive Devices; Fuzes; Läckagesökning; små mekaniska komponenter; elsprängkapslar; tändrör;

   Sammanfattning : The work was conducted at Saab Dynamics AB in Karlskoga, and the focus was to investigate and evaluate available methods for leak detection of small mechanical components, such as Electro-Explosive Devices (EEDs) and fuzes in warheads and using these methods to investigate whether they work for this purpose. At the start of the project, the problem was that these mechanical components were exposed to contamination, such as moisture and dust but also TNT exudate, plasticizers, gunpowder residues, etc. LÄS MER

5. 4. Characterisation of the LYCCA Double-Sided Silicon Strip Detectors

   Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Partikel- och kärnfysik

   Författare :Marwan Mohamed; [2023]
   Nyckelord :DSSD LYCCA HISPEC FAIR Characterisation; Physics and Astronomy;

   Sammanfattning : The goal of this thesis work is to describe the methods used and perform comprehensive testing of the Double-Sided Silicon-Strip Detectors (DSSD) prior to their implementation in the Lund-York-Cologne CAlorimeter (LYCCA) detector. In the framework of this project, the DSSD characterisation was carried out to ensure specification compliance prior to their "in-kind contribution" delivery to the HISPEC experiment at the NUSTAR collaboration. LÄS MER

7. 5. Riskreducerande åtgärder för vätgasläckage

   Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

   Författare :Jacob Kuhs; Oskar Zubac; [2022]
   Nyckelord :Hydrogen; Risk reduction measures; Risk mitigation; Gas leak detection; Leakage sound; Ultrasonic; Ultrasound; Gas leak detector; USGD; UGLD; Fire detection; Flame detector; Flame spectroscopy; Spectrum; Technology and Engineering;

   Sammanfattning : Hydrogen use increase and so does the knowledge about its risks, but not necessarily about how to handle these risks. Limited literature is available about risk mitigation for hydrogen use, the objective of this thesis is to increase this knowledge. LÄS MER