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Showing result 1 - 5 of 40 essays matching the above criteria.

1. 1. Isocyanates formation from thermal degradation of polyurethane foam during welding of district heating pipes

   University essay from KTH/Ergonomi

   Author : Muhammad Akram; [2023]
   Keywords : Polyurethane; Isocyanates; District Heating Pipes; Oxy-fuel Welding; Manual Metal Arc Welding;

   Abstract : Polyurethane insulation foam, which is used as insulation on district heating steel and copper pipes, is made from polymerisation of polyol and diisocyanates monomers. Installation of new district heating pipes or replacement of old pipes involves masses of welding activities. READ MORE

3. 2. Design and investigation of a pulsating heat pipe for electronic cooling

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Sulafa Hammad; [2023]
   Keywords : Pulsating heat pipes PHP ; Electronic cooling; two phase flow heat transfer; Technology and Engineering;

   Abstract : The purpose of this study is to design and investigate a pulsating heat pipe device (PHP). A PHP is a two-phase flow heat transfer device which can handle high heat fluxes with passive internal flow. It is made of a continuous loop serpentine, partially filled with a working fluid that can cool systems, such as electronic devices. READ MORE

4. 3. A Method of CFD-based System Identification for Standardized Co-Simulation

   University essay from Linköpings universitet/Fluida och mekatroniska system

   Author : Olle Lindqvist; [2022]
   Keywords : CFD; system identification; FMI; SSP; co-simulation; steady-state;

   Abstract : System simulations are a useful tool when analyzing complex systems. For example, simulations can be cheaper than physical testing of the actual system. Models canalso be created for systems that do not exist yet, that would be impossible to analyze experimentally. READ MORE

5. 4. 5th Generation District Heating and Cooling : A High-Level Simulation Model of a Novel District Energy Network

   University essay from Umeå universitet/Institutionen för tillämpad fysik och elektronik

   Author : Viktor Olofsson; [2022]
   Keywords : 5GDHC; district heating; district cooling; district energy; energy systems; renewable energy;

   Abstract : 5th generation district heating and cooling is a novel approach to district heating and cooling networks. Instead of a centralized energy supply, the technology relies on multiple building-level energy centers, equipped with heat pumps and chillers. READ MORE

6. 5. LCA of Low-temperature District Heating Network Components

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Nils Olsson; [2021]
   Keywords : District Heating; LCA; Life Cycle Assessment; Pipes; Environment; Technology and Engineering;

   Abstract : Following the development of new materials and the continuous technical progress made in the construction and energy industries, district heating as a concept finds itself on the brink of a generational shift. One of the pioneering projects leading the way is the creation of Brunnshög, an modern and sustainable district under construction in the north-eastern end of the city of Lund, Sweden. READ MORE