Essays about: "internal heat dissipation"

Found 4 essays containing the words internal heat dissipation.

  1. 1. Study of HfN as seed layer for next generation of BAW RF filters : synthesis, characterization, and investigation of piezoelectric performance

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Eduard Llorens Balada; [2020]
    Keywords : HfN; AlScN; AlN; sputtering; XRD; SEM; seed layer; epitaxial growth;

    Abstract : Micro-electro-mechanical systems (MEMS) have become an essential component of a wide range ofelectronic devices over the last decades such as accelerometers, microphones, gas sensors, and filters.During this new millennium, a new radio frequency (RF) technology has been developed to satisfy thetough demands that arose due to the implementation of 5G wireless communication: bulk acoustic wave(BAW) filters. READ MORE

  3. 2. Design of Resonant Filters for AC Current Magnification : Heating of Li-ion Batteries by Using AC Currents

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Nikolina Djekanovic; [2018]
    Keywords : Current control; injection of alternating current; internal heat dissipation; LCL filter; Lithium-ion batteries; power efficiency; resonance phenomenon;

    Abstract : Using alternating current in order to heat batteries at sub-zero temperatures is a method,which is investigated in-depth by an increasing number of study groups. The thesis considersthe resonance phenomenon with the intention to use alternating current amplificationand battery’s impedance in order to induce power dissipation inside the battery, and in thisway increase its temperature. READ MORE

  4. 3. CFD analyses of the gas flow inside the vessel of a hot isostatic press

    University essay from KTH/Kraft- och värmeteknologi

    Author : Andreas Åkerberg; [2012]
    Keywords : CFD; hot isostatic press; computational fluid dynamics; numerical methods; furnace; pressurized gas; vessel; rapid cooling;

    Abstract : Hot isostatic pressing (HIP) is a thermal treatment method that is used to consolidate, densify or bondcomponents and materials. Argon gas is commonly used as the pressure medium and is isostaticallyapplied to the material with an excess pressure of 500-2000 bar and a temperature of 500-2200oC. READ MORE

  5. 4. Experimental and CFD Evaluation of Humidity Management Methods of Ruggedizing a COTS Electronics System for a Severe Climatic Environment

    University essay from JTH, Data- och elektroteknik

    Author : YAFAN ZHANG; [2007]
    Keywords : humidity management; severe storage environment; electronics enclosure; environment test; comoputational fluid dynamics; enclosure heater;

    Abstract : This master thesis is about an investigation of anti-moisture methods for a nonhermeticelectronics enclosure containing a number of printed circuit boards(PCB) and placed in a severe climatic environment. The relevant theoretical background was provided first. READ MORE