Performance investigation of various cold thermal energy storages

This study deals with solidification and melting of some typical encapsulated ice thermal energy storage geometries. Using ANSYS GAMBIT and FLUENT 6.0 software, HTF fluid motion past encapsulated water (ice) geometries, varying HTF flow rates and inlet temperatures are analyzed. The main source of irreversibility was from entropy generation accompanying phase change, although viscous dissipation losses were included. Energy efficiencies were well over 99% for all cases, while exergy efficiencies ranged from 70% to 92%. By far, the most influential variable was the inlet HTF temperature; higher efficiencies resulted from inlet HTF temperatures closer to the solidification temperature of water.

Name thesis:degree_name

Master of Applied Science (MASc)

Discipline thesis:degree_discipline

Mechanical Engineering

Grantor

University of Ontario Institute of Technology

Year dc:date.issued

2008

Author dc:creator

• MacPhee, David

Advisor dc:contributor.advisor

• Dincer, Ibrahim

• Thermal energy storage
• Heat transfer
• Energy
• Exergy
• Encapsulated ice

Language dc:language.iso

en

Handle dc:identifier.uri

https://hdl.handle.net/10155/10

OAI identifier oai:identifier

oai:ontariotechu.scholaris.ca:10155/10