Essays about: "thermal expansion"

Showing result 11 - 15 of 92 essays containing the words thermal expansion.

  1. 11. Micro-architectured materials for thermal management : Porous graphite/graphene boiling enhancement structures

    University essay from Uppsala universitet/Tillämpad mekanik

    Author : Melody Ghaderidosst; [2022]
    Keywords : Microarchitecture; TPMS; Gyroid; thermo-mechanical; computational homogenization; graphite; graphene;

    Abstract : The convergence of the digital and physical world encourages advances in high-speed telecommunication and fifth generation technology. Two-phase heat transfer systems are common engineering solutions. However, due to the large frequency spectra in 5G, the systematic heat generation increases requiring more efficient thermal management. READ MORE

  3. 12. Material analysis for a rotating inlet valve : Sliding contact in an oil-free super-critical steam environment

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Author : Johan Samuelsson; [2022]
    Keywords : Mechanical carbon; graphite; carbon graphite; zirconia; steam engine; steam; tribology; friction; wear; stellite; nitronic 60; antimony; carbon; Ni-resist cast iron; waste heat recovery; rotating inlet valve; valve; Mekaniskt kol; gafit; ångmotor; ånga; tribologi; friktion; nötning; gjutjärn; roterande inloppsventil; ventil;

    Abstract : In this thesis, the aim is to study possible tribo-materials for a rotating inlet valve and to find a suitable material combination for the contact. The valve is part of a modern oil-free and high temperature steam engine. Systematic material selection together with tribological tests and wear analyses are performed. READ MORE

  4. 13. A Quality Assurance of NKT’s Temperature Measuring : Evaluation and Uncertainty Analysis of the Temperature Measuring Chain on High Voltage Cables

    University essay from Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Author : Hannes Olausson; [2022]
    Keywords : Temperature; Uncertainty; Logger system; Thermocouple;

    Abstract : An overall increase of interest and need for high voltage cable have been acknowledge overthe last years. This is mainly due to the effect of the rapid expansion and transition fromfossil-energy sources to a future with non fossil-energy. READ MORE

  5. 14. Assessment of ice loads on piled structures based on local conditions

    University essay from KTH/Betongbyggnad

    Author : Astrid Lindblom; Elin Ånger; [2022]
    Keywords : Ice loads; Local conditions; Structural design; Piled structures; Islaster; Lokala förhållanden; Dimensionering; Pålade konstruktioner;

    Abstract : This master report studies structural design methods for ice loads and the impact of local conditions. Ice loads occur due to ice movements or expansion of the ice sheet. Specifically, this study analyses ice loads on piled structures and ten different design methods and handbooks to calculate the ice load. READ MORE

  6. 15. Spinning Correlators at Finite Temperature

    University essay from Uppsala universitet/Teoretisk fysik

    Author : Oscar Arandes Tejerina; [2022]
    Keywords : Conformal Field Theory; Finite Temperature; Thermal Conformal Blocks; AdS CFT; Mean Field Theory;

    Abstract : This master thesis is framed in the striking correspondence between gravity theories in Anti-de Sitter spacetime (AdS) and Conformal Field Theories (CFT). This is usually known as AdS/CFT duality and relates gravity theories in the bulk with CFTs that live in their conformal boundary. READ MORE