Sökning: "Leak detection"

Visar resultat 1 - 5 av 32 uppsatser innehållade orden Leak 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. A socio-technical review of Natural Gas: Resources, environmental and political aspects

   Master-uppsats, Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskap

   Författare :Ravi Teja Gorugantu; Sridhar Babu Sanjeevi Rao; [2023]
   Nyckelord :;

   Sammanfattning : This report gives a general overview of the natural gas resources in the world, along with its importance as a source of producing energy, and technical uses. It also draws attention to the political issues raised by natural gas exploitation and the steps being taken to address them. LÄS MER

5. 4. Exposing memory accesses and branches in machine code to symbolic execution : Tracking instructions through binary raising

   Master-uppsats, Linköpings universitet/Programvara och system

   Författare :Isak Axelsson; [2023]
   Nyckelord :Binary lifting; Binary raising; Spectre;

   Sammanfattning : In 2018, a new security vulnerability was discovered that existed in billions of processors from different manufacturers, using various architectures. A so-called spectre attack can be launched to exploit the vulnerability and cause cryptographic information to leak through side-channels of the targeted system. LÄS MER

7. 5. 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