Doctoral Dissertations

Keywords and Phrases

Energy Storage Materials; Nuclear Safety; PCM Heat Exchanger; PCMs; Phase Change Materials; Thermal Energy Storage


"The dissertation is intended to study the fundamental physical behavior of phase change materials (PCMs) and provide a comprehensive overview of the state of the art in their design and applications for thermal energy storage. Standard, predictive and thermodynamic models were presented to develop new PCM eutectic mixtures in a more scientific design approach. As new eutectic PCMs were developed, further research efforts were initiated to develop functionalized PCMs with enhanced thermal and physical properties to create the next generation of PCMs. Further efforts have been expanded to review several high-temperature PCM candidates with phase transition temperatures in the range of 70 ⁰C to 90 ⁰C for enhancing the passive safety and heat removal capabilities of the reactor containment during Loss of Coolant Accidents (LOCA). An optimum PCM candidate was selected and the temperature-dependent properties of the selected PCM were studied in detail. The study has also reviewed very high-temperature PCMs in the range of 300 ⁰C to 900 ⁰C which provide a unique opportunity to meet the variation in the power plant demand profiles. This review discussed various design and technical aspects on the concept of a coupled nuclear reactor thermal energy storage unit for several reactor types and identified numerous very high-temperature PCMs for potential improvements to Generation IV reactor designs and load shifting purposes. Finally, as a first step on experimentally studying a real PCM thermal energy storage system, a PCM heat exchanger in the form of parallel-plate heat exchanger was built and experimentally characterized for load shifting purposes"--Abstract, page iii.


Schlegel, Joshua P.

Committee Member(s)

Castano Giraldo, Carlos Henry
Alajo, Ayodeji Babatunde
Lee, Hyoung-Koo
Dogan, Fatih


Nuclear Engineering and Radiation Science

Degree Name

Ph. D. in Nuclear Engineering


Missouri University of Science and Technology

Publication Date

Spring 2018


xiv, 205 pages

Note about bibliography

Includes bibliographic references (pages 186-204).


© 2018 Rami Mohammad Reda Saeed, All rights reserved.

Document Type

Dissertation - Open Access

File Type




Thesis Number

T 11313

Electronic OCLC #