Essays about: "pressurization"

Showing result 1 - 5 of 10 essays containing the word pressurization.

  1. 1. Mathematical Modeling and Simulation of Cryogenic Liquid Hydrogen Storage

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Gusten Zandler Andersson; [2023]
    Keywords : Modeling; Simulation; Liquid Hydrogen; Storage tank; Modelica; Chemical engineering; Technology and Engineering;

    Abstract : Liquid hydrogen is an attractive alternative to fossil fuels in the aviation industry, but storing it both before and during flights introduces many challenges pertaining to the cryogenic liquid conditions required. Having reliable models to predict the dynamical behavior inside the storage tank is therefore of great interest. READ MORE

  3. 2. Analysis and optimization of a dissolved air flotation process for separation of suspended solids in wastewater

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Oskar Bäck; [2021]
    Keywords : Dissolved air flotation; Effluent recycle rate; Optimization; Recycle flow pressurization; Wastewater;

    Abstract : Margretelund wastewater treatment plant (WWTP) operated by the water utility Roslagsvatten AB, wasbuilt in 1956 and is located in Åkersberga town, Stockholm County, Sweden. Margretelund WWTP waslast renovated in 1999, and has been operated with the same physical, chemical, and biological processessince then. READ MORE

  4. 3. Optimization of the pressurization system of the Themis reusable rocket first stage demonstrator

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : ROMAIN MABBOUX; [2020]
    Keywords : Pressurization system; optimization; launcher; Themis 3; Trycksättningssystem; optimering; bärraketer; Themis 3;

    Abstract : The design of complex systems such as a launcher, or subsystems like its pressurization system, is known to be fastidious and expensive especially in the space domain. However, the recent emergence of new actors in this domain has been a game changer, binding these systems to fulfil more and more requirements (cheap, efficient, rapidly produced, aesthetic, environmentally friendly…) in order to compete with the market. READ MORE

  5. 4. Estimation of Relative Seismic Velocity Changes Around Katla Volcano, Using Coda in Ambient Seismic Noise

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Frida Jonsdottir; [2018]
    Keywords : Katla volcano; Iceland; ambient seismic noise; coda waves; relative velocity variations; Katla vulkan; Island; omgivande seismiskt brus; codavågor; relativa hastighetsvariationer;

    Abstract : Relative seismic velocity variations in the Earth’s crust can be estimated by using ambient seismic noise records from a pair of stations. Velocity variations can be caused by stress perturbations in the subsurface. Therefore, information on stress changes in the crust can possibly be retrieved from measured velocity variations in the medium. READ MORE

  6. 5. Probabilistic study of number of doors open simultaneously to fire-isolated stairs in basement carparks

    University essay from Lunds universitet/Avdelningen för Brandteknik

    Author : Josefin Nilsson; [2017]
    Keywords : Carpark; basement; evacuation; stair pressurization; CarParkEvac; fire-isolated stair; pre-evacuation time; movement time; travel speed; travel distance; conceptual model; probability; probabilistic method; distributions; calculation model; simulations; case study; sensitivity analysis; Technology and Engineering;

    Abstract : This thesis investigates occupant evacuation in basement carparks. The thesis aims to develop a calculation model to determine the probability of different number of doors to fire-isolated stairs being open simultaneously during an evacuation scenario. READ MORE