Essays about: "värmestrålning"

Showing result 1 - 5 of 8 essays containing the word värmestrålning.

1. 1. Numerical Modelling of a Packed Bed Thermal Energy Storage for Applications in a Carnot Battery : KTH Thesis Report

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

   Author : Gabriel Juul; [2023]
   Keywords : Thermal energy storage; Carnot battery; sand; packed bed; granular medium; porous medium; effective medium technique; effective thermal conductivity; paramedic study; 3D model; COMSOL; numerical modelling; Lagring av värmeenergi; Carnot-batteri; sand; packad bädd; granulärt medium; poröst medium; effektiv mediumteknik; effektiv värmeledningsförmåga; parametrisk studie; 3D-modell; COMSOL; numerisk modellering;

   Abstract : This thesis explores the heat transfer characteristics of a packed bed thermal energy storage device through the development of a 3D model in COMSOL Multiphysics. The model is based on a laboratory-scale device consisting of an aluminum box filled with sand, which acts as the thermal storage medium. READ MORE

3. 2. Magnificent beasts of the Milky Way: Hunting down stars with unusual infrared properties using supervised machine learning

   University essay from Uppsala universitet/Observationell astrofysik

   Author : Julia Ahlvind; [2021]
   Keywords : machine learning; supervised machine learning; support vector machine; photometry; stars; stellar physics; astronomical archives;

   Abstract : The significant increase of astronomical data necessitates new strategies and developments to analyse a large amount of information, which no longer is efficient if done by hand. Supervised machine learning is an example of one such modern strategy. READ MORE

4. 3. Simulations of Pre-arcing Times in Diazed Fuses by an Electrothermal Dynamic Model

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

   Author : Amadeus Andersson Jonsson; [2020]
   Keywords : Diazed fuses; Pre-arcing time; The finite differ-ence method; thermoelectrical fuse model;

   Abstract : The determination of the pre-arcing time of a fuse given a specific current is crucial during the selection process if the fuse is to be effective for the given application. Often the data supplied by the manufacturer is enough to determine this time, however this is not always the case. READ MORE

5. 4. Counting Black Hole Microstates in String Theory

   University essay from Uppsala universitet/Teoretisk fysik

   Author : Jorge Laraña Aragón; [2017]
   Keywords : ;

   Abstract : In this project, we explore the area of black holes in String Theory. String Theory has had several successes in describing properties of black holes. READ MORE

6. 5. Experimental Fire Study of Expanded Polystyrene Insulation in Concrete and Lightweight Concrete Wall Constructions

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

   Author : Jacob Nellgård; [2017]
   Keywords : EPS; Expanded Polystyrene; Concrete; Lightweight Concrete; Vertical Firespread;

   Abstract : In today’s building industry creating and finding a cheaper and more efficient way of construction with the same standards is the primary goal. The necessity in testing the constructions in different scenarios is of highest interest, primarily in saving future lives but also in the residual value for the insurance point of view. READ MORE