Sökning: "vacuum pumps"

Visar resultat 1 - 5 av 11 uppsatser innehållade orden vacuum pumps.

  1. 1. Evaluating the Performance of Propulsion System Elements in an Aerospace Company

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :David Fredouelle; [2023]
    Nyckelord :Turbomachinery; injector; test campaign; cryogenic; rocket engine; test bench; cold flow; Turbomaskin; injektor; testkampanj; kryogen; raketmotor; testbänk; kallt flöde;

    Sammanfattning : This paper examines two examples of testing activities of sub-components of a 300kN methalox first-stage rocket engine developed by Pangea Aerospace, namely, theinjectors and the cryogenic pumps. One of the difficulties of these test campaignsis to evaluate the performances of these sub-components without using cryogenicpropellants and in conditions differing from flight conditions. LÄS MER

  3. 2. Heat recovery from vacuum brazing furnaces

    Master-uppsats, Lunds universitet/Avdelningen för Installations- och klimatiseringslära

    Författare :Oliver Robertsson; Rasmus Wikman; [2023]
    Nyckelord :Waste heat; Vacuum furnace; Heat recovery; HVAC; Technology and Engineering;

    Sammanfattning : By partly replacing the use of primary energy sources with waste heat recovery, climate and environmental goals for the future will be closer at hand. This thesis investigates the waste heat potential of Alfa Laval's vacuum brazing furnaces in Ronneby and alternative ways of integrating the furnace's waste heat into the building's HVAC system. LÄS MER

  4. 3. Investigation of new refrigerants for a large-scale heat pump and evaluation of system performance

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Hanna Grahn; Matilda Eriksson; [2023]
    Nyckelord :Large-scale heat pump; refrigerant; COP;

    Sammanfattning : Heat production accounted in 2021 for 50 % of the energy end use globally, where a strongconnection to fossil sources still exists. Large-scale electrical heat pumps can therefore have akey role in the energy system to enable a decreased reliance on fossil fuels and at the same timecontribute to stable system when incorporating more intermittent renewable sources. LÄS MER

  5. 4. Seawater Heat Recovery by the Utilisation of Phase Change Heat of Freezing : Technical feasibility study of a system for District Heating in the city of Helsinki

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Rakesh Ramesh; [2022]
    Nyckelord :District heating; Seawater; Ice slurry; Aspen Plus; Pressure drop; Fjärrvärme; Havsvatten; Isslurry; Aspen Plus; Tryckfall;

    Sammanfattning : With the Paris agreement calling to limit global warming to 2°C below pre-industrial levels, with further efforts to ensure it stays below 1.5°C, the Finnish government passed the Lakihiilen energiakäytön kieltämisestä (416/2019), i.e. LÄS MER

  7. 5. Utveckling av ventilationssystem

    Kandidat-uppsats, Malmö universitet/Institutionen för materialvetenskap och tillämpad matematik (MTM)

    Författare :Simon Wessling; Filip Kellerman; [2022]
    Nyckelord :ventilation; examensarbete; Kellerman; Wessling; Razorback Engineering AB; Malmö universitet; ex-arbete; Produktutveckling och design;

    Sammanfattning : A company by the name Razorback has a room with two vacuum pumps. This room gets uncomfortably hot on work days, while another room does not have any heating system at all. The purpose of this project is to contain the excess heat and ventilate it to the cold room. LÄS MER