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Dissertations / Theses on the topic 'Deaeration'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Haapala, A. (Antti). "Paper machine white water treatment in channel flow:integration of passive deaeration and selective flotation." Doctoral thesis, Oulun yliopisto, 2010. http://urn.fi/urn:isbn:9789514263682.

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Abstract Gas removal from the papermaking process is currently a standard practice, whereas purification of the internal water circulation has become common only recently. Both unit processes have progressed greatly during recent decades and new concepts are constantly being developed. The aim of this thesis was to analyse the efficiency and applicability of a channel flow design introduced by Metso for passive white water deaeration and to study the dynamics of passive bubbly gas removal. In addition, separation of the detrimental process water components by selective flotation during deaerat

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2

Vaidya, Kapil, and Palau Xavier Navarro. "Coolant Filling Simulation Model in 1D with GT-Suite : A Study on Scania's Electric Truck's Battery Cooling Circuit." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300372.

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Driven by the goal of decreasing emissions and pollutants towards a more sustainable future, the automotive industry is undergoing a rapid transition towards battery-powered electric vehicles. This shift to sustainable transport is fast-paced, and new technical solutions are being offered on a regular basis to fulfil the future needs for electric vehicles, including battery-electric trucks. This continuously necessitates a fast development of the battery-electric truck, along with the cooling system. To validate the cooling system, Scania's preferred approaches are testing and 3D simulations.

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3

Jokinen, H. (Hanna). "Screening and cleaning of pulp—a study to the parameters affecting separation." Doctoral thesis, University of Oulu, 2007. http://urn.fi/urn:isbn:9789514284526.

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Abstract The objective of this thesis was to determine the effects of design, operational and furnish quality parameters on pressure screen and hydrocyclone performance. The general contradictory interrelationships between capacity and selectivity in pressure screening and cleaning are commonly recognized, but deep understanding of the effects of design, operational and furnish quality parameters on the state of operation is missing. As separation selectivity is closely dependent on thickening and pulp passage, an operation curve for separation was applied and its application further develo

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4

Wartlick, Karl, Matthias Baumann, Andras Veres, and Roman Weidemann. "CFD-aided optimization of customer-specific tank systems using an innovative labyrinth deaerator." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71199.

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This paper introduces the comprehensive approach of ARGO-HYTOS in developing and optimizing hydraulic tanks. Starting with a detailed analysis of the application, the tank design was optimized and an innovative deaerator was developed. In a first step, various Computational Fluid Dynamics (CFD) -based analyzing methods are presented, which are used to support the optimization process of tank development with regard to complex flow conditions and unexpected influences. The main topic of this paper is the introduction of an innovative labyrinth deaerator, causing coalescence of air bubbles, slow

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5

Stoor, T. (Tuomas). "Air in pulp and papermaking processes." Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514280784.

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Abstract A pulp suspension consists of water, fibres, fines, fillers and chemicals, but air or other gases are also present in practically all pulping processes either in dissolved form or as bubbles. Dissolved gases seldom disturb the processes, but they are readily converted to gaseous form when conditions change. The gas bubbles affect the properties of the pulp suspension, reduce the accuracy of certain measurements, interfere with the runability of the papermachine and detract from the quality of the end-product. Gases are removed from the process by either mechanical or chemical means, r

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6

Vollmer, Thees, and Ludger Frerichs. "Development of hydraulic tanks by multi-phase CFD simulation." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199968.

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Hydraulic tanks have a variety of different tasks. The have to store the volume of oil needed for asymmetric actors in the system as well as to supply the system with preconditioned oil. This includes the deaeration as air contamination is affecting the overall system performance. The separation of the air in the tank is being realized mainly by passive methods, improving the guidance of the air and oil flow. The use of CFD models to improve the design of hydraulic tank is recently often discussed. In this paper, a design method for hydraulic tanks using CFD is presented and discussed. First t

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7

Bonariol, Francesco. "Sizing of a packed stripping tower for seawater injection process and H2S abatement on an FPSO." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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The purpose of this working thesis is to study and analyze in depth the sea water injection unit found upon an FPSO. In particular, attention is focused on the vacuum deaeration column used for the degasification of the seawater stream in two stages: the first, with a lower vacuum degree and the second with a higher vacuum degree. Moreover, this thesis studies the mass transfer operation, carrying out a profound dissertation of the mass transport phenomena, introducing the mass transfer equations and coefficients. This study has been developed because it is desired to size another stripp

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8

Banda, Richard Bobby. "Modelling of the deaerator system in Flownex." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/24319.

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The study of the steady-state and dynamic behaviour of thermal power plants is of interest and significant benefit in different engineering fields ranging from research and design, to the assistance of operator training, plant optimization, fault finding and failure analysis. In light of the these benefits, and the increasing electrical energy demand in South Africa, the Eskom Power Plant Engineering Institute Centre for Energy Efficiency intends to build a transient simulation model of a coal fired power plant. The software identified for this task is Flownex SE. Flownex is a one-dimensional

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9

Wedgbury, Melanie Kim. "Environmentally-assisted crack growth in deaerator storage vessel steels." Thesis, Open University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.258960.

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10

Fegan, J. J. H. "Environment assisted cracking of deaerator steels in high temperature water." Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260856.

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11

Le, Grange Willie. "Component development for a high fidelity transient simulation of a coal-fired power plant using Flownex SE." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29863.

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Large coal-fired power stations are designed to be run predominantly at full load and optimum conditions. The behaviour of plants, operating at low load and varying conditions, is getting more and more attention due to the introduction of variable renewable generation on the grid. Consequently, the need for a fully transient high-fidelity system based model has grown, as this will enable one to study the behaviour of plants under such non-ideal conditions. This report details the development of a feedwater heater, deaerator and turbine component for such a high-fidelity transient system model

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12

Денека, Володимир Іванович, та Volodymyr Deneka. "Інформаційно-вимірювальна система забезпечення процесу автоматизації процесу регулювання температури перегрітої пари барабанного котла типу БКЗ-420-140-6". Master's thesis, ТНТУ ім. І. Пулюя, 2020. http://elartu.tntu.edu.ua/handle/lib/33762.

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Здійснено розробку та дослідження системи для автоматизації процесу регулювання температури. Приведено опис конструкції та принципу роботи вимірювального приладу, описані основні принципи автоматичного регулювання парових котлів, зроблено розрахунки системи регулювання, теплових навантажень по режимах теплової схеми. Проведено розрахунок динамічних параметрів налагодження автоматичних регуляторів, описано розрахунок надійності і якості процесу регулювання температури перегрітої пари.<br>The development and research of the automated control system for the automation of the process of temperatur

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13

Ni, Sheng Wen, and 倪聖文. "Study of the effect of deaeration on lethality in low viscisity juices using a simulated aseptic processing system." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/67389415008501405044.

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14

YOU, YU-WEN, and 游玉文. "Effect of oxygen on quality of aseptically packaged guava puree and studies on deaeration conditions in guava juice processing." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/82121426301220658244.

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15

Li, De Ping, and 李德屏. "Effect of deaeration on achieved lethality and residence time distribution of viscous juice in a simulated tublar heat exchanger system." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/12323941164215564842.

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16

Книш, Надія Олександрівна. "Удосконалення роботи системи автоматизації деаератора турбінного відділення атомного енергоблоку в умовах ВП «Запорізька АЕС»". Магістерська робота, 2020. https://dspace.znu.edu.ua/jspui/handle/12345/1633.

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Книш Н. О. Удосконалення роботи системи автоматизації деаератора турбінного відділення атомного енергоблоку в умовах ВП «Запорізька АЕС» : кваліфікаційна робота магістра спеціальності 151 "Автоматизація та компьютерно-інтегровані технологіі" / наук. керівник А. М. Ніколаєнко. Запоріжжя : ЗНУ, 2020. 106 с.<br>UA : Книш Н.О. Удосконалення роботи системи автоматизації деаератора турбінного відділення атомного енергоблоку в умовах ВП «Запорізька АЕС». Кваліфікаційна випускна робота для здобуття ступеня вищої освіти магістра за спеціальністю 151 - Автоматизація та компьютерно-інтегровані технологі

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17

Su, Kuanming, and 蘇冠銘. "The Study of the Deaerating Device on the Engine Cooling System." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/82091115561069330054.

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碩士<br>大葉大學<br>車輛工程研究所<br>90<br>Since the advancement of engine technology, new engines can have much higher power and thermal efficiency, and also much higher combustion temperature and pressure inside the cylinder than before. The higher combustion temperature makes coolant temperature higher, while the higher combustion pressure possibly forces more gas seep into the coolant. High combustion temperature also requires more radiator performance, however, modern vehicle packaging only leaves very limited space for radiator installation. These limitations on radiator make the engine cooling s

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18

Ніколенко, Олексій Євгенович. "Підвищення енергетичної ефективності системи теплопостачання ПАТ «Укрграфіт»". Магістерська робота, 2020. https://dspace.znu.edu.ua/jspui/handle/12345/2195.

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Ніколенко О. Є. Підвищення енергетичної ефективності системи теплопостачання ПАТ «Укрграфіт» : кваліфікаційна робота магістра спеціальності 144 "Теплоенергетика" / наук. керівник І. А. Назаренко. Запоріжжя : ЗНУ, 2020. 69 с.<br>UA : Робота викладена на 69 сторінках друкованого тексту, містить 14 таблиці, 0 рисунків. Перелік посилань включає 49 джерел з них на іноземній мові 0. У роботі розглянуто та проаналізовано проблему використання вторинних енергоресурсів. Запропоновано побудову утилізаційної котельні для забезпечення ПАТ «Укрграфіт» парою та гарячою водою.<br>EN : The work is presented

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