Sökning: "Cooling load"

Visar resultat 1 - 5 av 178 uppsatser innehållade orden Cooling load.

  1. 1. Commissioning of ITER heat rejection system for low load

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad kärnfysik

    Författare :Elizaveta Yakovleva; [2023]
    Nyckelord :commissioning; ITER; fusion; control logic; cooling system; I C;

    Sammanfattning : This project has commissioned the control logic of the Heat Rejection System (HRS) at ITER, the international fusion project. The HRS is a large system, including 10 cooling towers, 13 pumps, and pipes large enough for a water flow of several thousand kg/s. All of this will becontrolled with automatic control logic. LÄS MER

  3. 2. Optimizing the Performance and Efficiency of District Heating Substations : A Study of the Cooling Process and Overall System Improvements in Ludvika

    Kandidat-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Marwan Ali; Eema Sheykhi Narani; [2023]
    Nyckelord :Energy efficiency in multi-family buildings; District heating efficiency; Sustainability; District heating control; Cooling process;

    Sammanfattning : The concept of future sustainability is driving efforts toward the efficient improvement of energy systems. District heating systems play a key role in balancing the energy system by improving performance and flexibility. LÄS MER

  4. 3. Design of cooling-air permeable coil support

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Rozbeh Ghassemi; [2023]
    Nyckelord :Topology optimization; FEM-simulations; CFD-simulations; Material selection; Topologioptimering; FEM-simuleringar; CFD-simuleringar; Materialval;

    Sammanfattning : Coil supports are integral load-bearing components employed in generators andmotors. They serve the purpose of preventing excessive deformation and maintaininga stable position of the coils responsible for generating power and magnetic fieldswhen rotating. LÄS MER

  5. 4. Investigation of Key Performance Indicators for Multi-Functional Arenas : A Case Study on Avicii Arena and Annexet

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

    Författare :Kevin Lai; [2023]
    Nyckelord :Stockholm Globe Arena Fastigheter AB SGAF ; Avicii Arena; Annexet; Key Performance Indicators KPI ; events; visitors; electricity consumption; heating consumption; cooling consumption; Data reduction; energy consumption; fluctuations; energy systems; Correlation Analysis; outdoor temperature; event types; Stockholm Globe Arena Fastigheter AB SGAF ; Avicii Arena; Annexet; Nyckeltal; evenemang; besökare; elektricitetsförbrukning; värmeförbrukning; kylförbrukning; Data reduktion; energiförbrukning; fluktuationer; energisystem; korrelationsanalys; utomhus temperatur; evenemangstyper;

    Sammanfattning : This thesis is a collaboration with Stockholm Globe Arena Fastigher AB (SGAF) and focuses on a case study involving the multi-functional arenas Avicii Arena and Annexet in Stockholm, Sweden. The objective of this study is to investigate Key Performance Indicators (KPI) that can sufficiently measure and evaluate monthly and yearly electricity, heating and cooling consumption while considering events and visitors. LÄS MER

  7. 5. Analysis of high-voltage low-current DC/DC converters for electrohydrodynamic pumps

    Kandidat-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Sigge Axelsson; Jonas Gartner; Axel Stafström; [2023]
    Nyckelord :high-voltage; low-current; low-power; DC DC; DC-DC; high-gain; converter; electrohydrodynamic pump; EHD; transformerless converter; Royer-based converter; resonant Royer oscillator; Cockroft-Walton voltage multiplier; CWVM; voltage multiplier; series-connected positive-negative voltage multiplier; SPNVM; planar air-core transformer; planar transformer; high-freqency Royer-based converter; overcurrent protection; LT8331; gallium nitride; GaN; planar PCB-integrated transformers;

    Sammanfattning : Moving parts cause vibrations and tend to wear out. In applications where maintenance is complicated, solutions without moving parts are therefore advantageous. Electrohydrodynamic pumps are such a solution. Instead of mechanical propulsion, they use strong electric fields to induce movement in a dielectric cooling liquid. LÄS MER