Masters Theses

Keywords and Phrases

Fatty Acids; PCM; Phase Change Material; Thermal Characterization; Thermal Energy Storage; Thermophysical Properties

Abstract

"The study provides a valuable and useful database for Phase Change Materials (PCMs) for Thermal Energy Storage (TES) applications. Only a few existing studies have provided an overall investigation of thermophysical properties of PCMs in this detailed manner. Several organic PCMs, namely Myristic acid, Capric Acid, Lauryl Alcohol, Palmitic acid and Lauric acid, have been characterized after being carefully selected to cover wide range of TES applications. Insights and information gained from this work will be applied toward the design and modelling of many low temperature thermal energy storage applications. The study experimentally investigated uncertainty of thermal characterization of PCMs by DSC analysis and the various thermal events and effects that occur when PCMs are tested in a DSC. The optimum measurement condition was found to be at a heating rate of 3⁰C/min and a sample mass of 7.5 mg. Furthermore, the study discovered a novel PCM eutectic mixture of 60% Methyl Palmitate (MP) and 40% Lauric Acid that can be readily adapted to large-scale industrial production to help improve the performance of energy systems, particularly in buildings. Further effort has been devoted to develop a final formulation of the PCM eutectic mixture characterized by a solid to gel phase transformation using Methyl hydroxyethyl cellulose as a gelling/thickening agent, and an enhanced thermal performance using Nano-graphene platelets (NGPs). The corresponding enhancement when 10% of NGPs was added was as follows: thermal conductivity was increased by about 97.7%, the specific heat capacity was increased by 52% for solid phase and 64% for liquid phase, the thermal diffusivity increased by 42% for solid phase and 54% for liquid phase"--Abstract, page iii.

Advisor(s)

Schlegel, Joshua P.

Committee Member(s)

Castano Giraldo, Carlos Henry
Dharani, Lokeswarappa R.

Department(s)

Nuclear Engineering and Radiation Science

Degree Name

M.S. in Nuclear Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Spring 2016

Pagination

xi, 109 pages

Note about bibliography

Includes bibliographical references (pages 99-108).

Rights

© 2016 Rami Mohammad Reda Saeed, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Fatty acids -- Testing
Materials -- Thermal properties
Change of state (Physics)

Thesis Number

T 10891

Electronic OCLC #

952599131

Download

Share

 
COinS