Essays about: "kallt flöde"

Found 5 essays containing the words kallt flöde.

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

    University essay from KTH/Kraft- och värmeteknologi

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

    Abstract : 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. READ MORE

  3. 2. EV battery temperature estimation : Designing a model for minimal temperature of high-voltage battery in a BEV

    University essay from Mittuniversitetet/Institutionen för data- och elektroteknik (2023-)

    Author : Björn Arvidsson; [2023]
    Keywords : BEV; temperature estimation; lowpass filter; BEV; lågpassfilter; temperaturestimering;

    Abstract : Fordonsindustrin är inne i ett skifte, där förbränningsmotorer (ICE) bör-jar fasas ut och det satsas mer på eldrift med hjälp av batterier (BEV).  I detta arbete, som efterfrågades av Volvo Cars, utvecklades en matema-tisk modell som uppskattar den lägsta temperaturen i en elbils högspän-ningsbatteri. READ MORE

  4. 3. State of the Art on Laminar Discharge through Perforated Pipes

    University essay from KTH/Energiteknik

    Author : Zinar Bilek; Martin Gustafsson; [2017]
    Keywords : ;

    Abstract : På senare år har efterfrågan på kylning ökat i takt med urbaniseringen i storstäder. 1992 introducerades fjärrkyla i Sverige, sedan dess har tekniken utvecklats och spridits till allt fler anläggningar över hela landet. READ MORE

  5. 4. Controls of seafloor depth on hydrothermal vent temperatures : prediction, observation & 2D finite element modeling

    University essay from Lunds universitet/Geologiska institutionen

    Author : Christine Andersen; [2010]
    Keywords : porous convection; compressible fluid flow; boiling; mixing; low heat supply; conductive heat flow; porös konvektion; kompressibelt flöde; kokning; blanding; lågtempererad värmekälla; konduktivt värmeflöde; Earth and Environmental Sciences;

    Abstract : Circulation of hot hydrothermal fluids in fractures and faults of the oceanic crust is driven by temperature and pressure gradients. Fluid discharge is focused to vertical structures, black or white smoker chimneys on the seafloor. Hydrothermal vent temperatures should hypothetically be directly related to water depth. READ MORE

  6. 5. Effects of Upwelling Events on the Atmosphere

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Susanna Hagelin; [2006]
    Keywords : upwelling; marine boundary layer; air-sea interaction; turbulent fluxes;

    Abstract : During an upwelling event the cold bottom-water is brought to the sea surface. This cools the atmosphere from below and the stratification becomes more stable. When the atmosphere is more stable the turbulence is reduced and, as a consequence, so are the turbulent fluxes. READ MORE