|SUBJECT:||M.S. Thesis Presentation|
|TIME:||Friday, September 18, 2015, 2:00 p.m.|
|PLACE:||MRDC Building, 4211|
|TITLE:||Stable Paraffin Composites for Latent Heat Thermal Storage Systems|
|COMMITTEE:||Dr. Samuel Graham, Chair (ME)
Dr. Kyriaki Kalaitzidou (ME)
Dr. Baratunde A. Cola (ME)
Phase change materials (PCMs) have the ability to store thermal energy as latent heat over a nearly isothermal temperature range. Compared to sensible heat storage, properly chosen PCMs can store an order of magnitude more energy when undergoing phase change. Organic PCMs present several advantages including their non-corrosive behavior and ability to melt congruently, which result in safe and reliable performance. Because of these qualities, organic PCMs have been proposed for use in latent heat thermal storage systems to increase the energy efficiency or performance of various systems such as cooling and heating in buildings, hot water heating, electronics cooling, and thermal comfort in vehicles. Current performance is hindered by the low thermal conductivity, which significantly limits the rate of charging and discharging. Solutions to this challenge include the insertion of high conductivity nanoparticles and foams to increase thermal transport. However, performance validation remains tied to thermal conductivity and latent heat measurements, instead of more practical metrics of thermal charging performance, stability of the composite, and energy storage cost.