Essays about: "heat conductivity"

Showing result 1 - 5 of 108 essays containing the words heat conductivity.

1. 1. Feasibility Study on Additive Manufacturing of Copper Windings using Electron Beam Melting

   University essay from KTH/Produktionsutveckling

   Author : Marilena Wiele; Murad Abulawi; [2023]
   Keywords : Electron beam melting; Additive manufacturing; Electric motor windings; Hairpin windings; Winding design; Copper; Parameter optimization; Electrical conductivity; Elektronstrålesmältning; Additiv tillverkning; Elmotorlindningar; Hårnålslindningar; Lindningsdesign; Koppar; Parameteroptimering; Elektrisk ledningsförmåga;

   Abstract : Within the framework of this thesis, the electron beam melting of pure copper for the purpose of producing electrical windings was examined. The conventional manufacturing process of copper windings was investigated, and the potential advantages offered by the design freedom inherent in the electron beam melting process were explored. READ MORE

3. 2. Flash Pulse Thermography Measurements of Coat Thickness

   University essay from Umeå universitet/Institutionen för fysik

   Author : Alexander Häggkvist; [2023]
   Keywords : Flash Pulse Thermography; Power Function; Dynamical Thermal Tomography;

   Abstract : The application of varnish, metal coats, and paint is a common practice for modifying or enhancing material properties. Metal coats are frequently used as protective layers against corrosion, heat, and wear, while also influencing characteristics like conductivity, weight, and production costs. READ MORE

4. 3. Homogenization of a higher gradient heat equation: Numerical solution of the cell problem using quadratic B--spline based finite elements

   University essay from Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013)

   Author : Samba Dumbuya; [2023]
   Keywords : Homogenization of a higher gradient heat equation; Two-scale expansion; fourth-order cell problem; temperature distribution; quadratic B-spline; finite element methods; effective conductivity vs volume fraction;

   Abstract : This study focuses on the numerical solution of a fourth-order cell problem obtained through a two- scale expansion approach applied to a higher gradient heat equation microscopic problem involving temperature distributions. The main objective is to investigate the temperature field within the macroscale domain and compute the effective conductivity using finite element methods. READ MORE

5. 4. 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

6. 5. Fouling modelling in a UHT unit based on plant data.

   University essay from Lunds universitet/Livsmedelsteknik och nutrition (master)

   Author : Thai Lam; [2023]
   Keywords : UHT; dairy; tubular heat exchanger; fouling development; fouling removal; food engineering; Technology and Engineering; Agriculture and Food Sciences;

   Abstract : Heat treatment of dairy products is essential for food safety, one way to perform this is ultra-high temperature (UHT) processing. During the process, macronutrients and minerals form fouling deposits which impairs heat transfer. Eventually the fouling needs to be removed chemically by alkaline and acidic detergents. READ MORE