Essays about: "termisk konduktivitet"

Showing result 1 - 5 of 11 essays containing the words termisk konduktivitet.

  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. Theoretical Considerations and Experimental Observations on Heat Transfer in Hydrogen Direct Reduced Iron

    University essay from KTH/Materialvetenskap

    Author : Felix Göttfert; [2023]
    Keywords : Hydrogen Direct Reduced Iron H-DRI ; Hydrogen Hot Briquetted Iron H-HBI ; Heat Transfer; Thermal Conductivity; Thermophysical Properties; Hydrogen Direct Reduced Iron H-DRI ; Hydrogen Hot Briquetted Iron H-HBI ; Värmeöverföring; Termisk konduktivitet; Termofysiska egenskaper;

    Abstract : Steel has played an indispensable role in shaping our contemporary world  and will persist to play that role for the foreseeable future. However, the steel industry currently is responsible for 7% of the global CO2-emissions, primarily due to the conventional carbon-based reduction process of iron ore. READ MORE

  4. 3. Construction and Validation of a Lab-scaleBorehole Thermal Energy Storage Model

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

    Author : Haoyang Dong; [2022]
    Keywords : borehole heat exchanger; lab-scale model; experimental construction; experiment test; validation; borrhålsvärmeväxlare; labbmodell; experimentell konstruktion; experimenttest; validering;

    Abstract : Borehole heat exchangers are widely used in heat pumps of residential buildings and industrialsystems. It is known as one of the most energy ecient technologies which provides heatingand cooling by using sustainable geothermal energy. The life time of borehole heat exchangerslasts more than 50 years which is longer than combustion boilers. READ MORE

  5. 4. Determination of thermal conductivity for mastic asphalt by combining previously performed laboratory work and TASEF

    University essay from Luleå tekniska universitet/Byggkonstruktion och brand

    Author : Martin Kruse Lindgren; [2021]
    Keywords : Mastic asphalt; BPGJA-11; thermal conductivity; TASEF; FEM; Timber; Gjutasfalt; BPGJA-11; termisk konduktivitet; TASEF; FEM; Trä;

    Abstract : Mastic asphalt is a material which in Sweden mainly is used as coating for bridges, parking decks, courtyards and terraces. Mastic asphalt is a material built-up by a combination of bitumen (a type of binder), well-graded aggregate (consists of both coarse and fine ballast), filler, sand and sometimes also fine graded macadam. READ MORE

  6. 5. Structural Battery Electrolytes

    University essay from KTH/Fiber- och polymerteknologi

    Author : Pernilla Öberg; Amanda Halvarsson; Julia Rune; Max Bjerkensjö; [2021]
    Keywords : structural battery electrolytes; polymerization-induced phase separation; bicontinuous morphology; lithium-ion conductivity; thiol-ene chemistry; Strukturella batteri-elektrolyter; polymerisations-inducerad fasseparation; bikontinuerlig morfologi; litium-jon konduktivitet; tiol-en kemi;

    Abstract : Strukturella batterier är multifunktionella; de tillhandahåller lagring av elektrokemisk energi samtidigt som de bidrar med en lastbärande funktion. Tillsammans möjliggör detta att batteriet kan integreras i karossen hos ett elektriskt fordon eller apparat. READ MORE