Sökning: "kylmetoder"

Visar resultat 1 - 5 av 11 uppsatser innehållade ordet kylmetoder.

1. 1. TEMPERATURE MODELLING OF GEAR MESH

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Ahsan Kadevalappil Ajilan; [2023]
   Nyckelord :Helical gear; Power loss; MATLAB; ANSYS; Spiralväxel; Strömförlust; MATLAB; ANSYS;

   Sammanfattning : Temperature control is an essential aspect of gear design. Continuous research is going on to improve the efficiency of gear systems. Power losses or energy losses in these systems typically manifest themselves as increased temperatures and thus reducing the lifetime and overall performance of the system. LÄS MER

3. 2. Air Cooling of Lithium Polymer Batteries : Experiments and Calculations on the KTH Formula Student 2022 Race Car Accumulator

   Kandidat-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :William Olsson; Linus Grinde; [2022]
   Nyckelord :;

   Sammanfattning : Lithium batteries work optimally at a temperature of around 15 to 35 °C, with a maximum temperature of around 60 °C. To get the most performance out of a formula student car the cooling needs to keep the battery cells within these temperatures during the competition. LÄS MER

4. 3. Simulation of Hardening of the MahanaKhon Tower Mat Foundation

   Master-uppsats, KTH/Betongbyggnad

   Författare :Zakaria Kazi-tani; [2019]
   Nyckelord :Hydration; MahanaKhon tower; mat foundation; young concrete; temperature development; thermal stresses; cracking; fly ash; finite element analysis; COMSOL Multiphysics; Hydratation; MahanaKhon tower; bottenplatta; ung betong; temperaturutveckling; termiska spänningar; sprickbildning; flygaska; finita elementanalys; COMSOL Multiphysics;

   Sammanfattning : Cement hydration is the result of a series of simultaneous chemical reactions occurring during the production of concrete. An excessive amount of heat is generated, which consequently may give rise to thermal stresses and cause early age cracks in concrete that may affect its structural integrity, and load bearing capacity. LÄS MER

5. 4. MQL versus Dry Machining - a Comparative Analysis in a Turning Process using LCA

   Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Författare :Shadi Shams; [2018]
   Nyckelord :Life cycle assessment; turning process; environmental impact; process-­based LCA; fast track LCA;

   Sammanfattning : During the last decades the challenge of sustainability has become more urgent and environmental impacts of different processes in manufacturing industry have received more attention. Life cycle assessment (LCA) has become an important and useful tool to evaluate the environmental impact of products and processes. LÄS MER

7. 5. Temperature reduction during concrete hydration in massive structures

   Master-uppsats, KTH/Betongbyggnad

   Författare :Sandra Lagundzija; Marie Thiam; [2017]
   Nyckelord :Massive concrete structures; hydration heat; temperature reduction; crack risk; mineral additions; concrete cooling; Massiva betongkonstruktioner; värmeutveckling; temperaturreducering; sprickbildning; mineraltillsatser; kylning av betong;

   Sammanfattning : Concrete is one of the most used building materials in the world because of its good properties. However, cement which is one of the main components in concrete, produces a high amount of heat during the hydration process. The generated heat leads to temperature rise inside the structure. LÄS MER