Sökning: "Leak rate"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden Leak rate.

  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. The trends in the offline password-guessing field : Offline guessing attack on Swedish real-life passwords

    Kandidat-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Yasser Zarzour; Mohamad Alchtiwi; [2023]
    Nyckelord :Password security; password-guessing tool; password-guessing method; password-guessing technique; offline attack; Swedish password leak; Lösenordssäkerhet; lösenordsgissningsverktyg; lösenordsgissningsmetoder; lösenordsgissningstekniker; offline attack; svenska lösenordsläckor;

    Sammanfattning : Password security is one of the most critical aspects of IT security, as password-based authentication is still the primary authentication method. Unfortunately, our passwords are subject to different types of weaknesses and various types of password-guessing attacks. LÄS MER

  5. 4. Accelerated Testing of the End-plate Assembly of a Redox Flow Battery

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

    Författare :Saksham Jindal; [2022]
    Nyckelord :Energy Storage; Flow Batteries; Accelerated Testing; Contact Resistance; Endplate Assembly; Leak Rate; Stack Design; Energilagring; flödesbatterier; accelererad provning; kontaktmotstånd; montering av ändplattor; läckagehastighet; utformning av staplar.;

    Sammanfattning : As the world transitions to intermittent renewable energy sources like solar and wind, the need for long-duration energy storage technologies is becoming more and more prominent. In this regard, flow batteries are seen as a promising solution, owing to their inherent advantages like decoupling of power and energy, extremely high cycle life and negligible self-discharge. LÄS MER

  7. 5. Development Model of a Gas Pressure Regulator for Spacecraft Propulsion : Design Enhancement and Testing

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

    Författare :FILIPPO POZZI; MARCUS SJÖBERG; [2021]
    Nyckelord :;

    Sammanfattning : This thesis treats the testing, analysis, and continued development of a mechanical pressure regulator prototype, intended for use in spacecraft propulsion systems. Herein referred to as the Adapted Mechanical Pressure Regulator (APR), the regulator is an adaptation made by the Swedish space system developer OHB Sweden AB (OSE) of an existing patented design originally intended for use outside of the space industry. LÄS MER