Search for dissertations about: "Phase change"

Showing result 16 - 20 of 892 swedish dissertations containing the words Phase change.

2. 16. Insights from combining Action Research and System Dynamics when facilitating change and improvement processes in healthcare

   Author : Paul Holmström; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; healthcare; improvement; change; implementation; action research; system dynamics; simulation;

   Abstract : BACKGROUND Healthcare is a complex system with multi-professional staff and multiple patient care pathways. Time pressure and minimal margins for error makes it challenging to implement new policies or procedures, no matter how desirable. Changes in healthcare also requires the participation of the multi-professional staff. READ MORE

4. 17. Design of Thermal Energy Storage with Phase Change Materials - Investigations within Material, Device and System Scale

   Author : Pepe Tan; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; T-History; Phase Change Materials; Thermal Energy Storage; Experimentation;

   Abstract : The addition of a thermal energy storage (TES) into a process allows the operator to store and release thermal energy on demand. This increased process flexibility leads to potential benefits such as shifting energy demand from peak to off-peak hours. READ MORE

5. 18. On the Design Considerations for Thermal Energy Storage with Phase Change Materials: Material Characterization and Modelling

   Author : Pepe Tan; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Phase Change Materials; Simulation; T-History; Thermal Energy Storage;

   Abstract : Integrating thermal energy storage (TES) technologies to a process enables storing and releasing thermal energy on demand. Depending on the implementation, this may lead to economic and ecological improvements, e.g. by shifting the peak demand to off-peak hours or by increasing the share of utilized renewable energy. READ MORE

6. 19. Numerical study of interface dynamics and phase change

   Author : Armin Shahmardi; Luca Brandt; Srdjan Sasic; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk mekanik; Engineering Mechanics;

   Abstract : Multi-phase fluid flows are ubiquitous in natural phenomena and different industrial applications such as in food industry, the medical sector, heat exchangers, power generation systems, to name a few.  Understanding the underlining  physics of multi-phase flows  proved to be a challenging task due to presence of sophisticated dynamics, including the evolution of the interface between any pair of phases, thermodynamics and possibility of phase change, interactions between the fluid phases and a solid phase, etc. READ MORE

7. 20. Phase-field modeling of stress-induced precipitation and kinetics in engineering metals

   Author : Claudio F. Nigro; Christina Bjerkén; Ylva Mellbin; Pär A T Olsson; Reinhart Pippan; Malmö universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phase-field theory; finite element method; corrosion; finite volume method; phase transformation; hydride; hydrogen embrittlement; linear elastic fracture mechanics;

   Abstract : The formation of brittle compounds in metals operating in corrosive environments can be a tremendous source of embrittlement for industrial structures and such phenomenon is commonly enhanced in presence of stresses. To study this type of microstructural change modeling is preferred to experiment to reduce costs and prevent undesirable environmental impacts. READ MORE