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research-article

Enhanced specific heat of sodium acetate trihydrate by in-situ nanostructure synthesis

[+] Author and Article Information
Amirhossein Mostafavi

Mechanical and Aerospace Engineering, the University of Texas at Arlington, Arlington, TX, USA, 76019
amirhossein.mostafavi@mavs.uta.edu

Shunkei Suzuki

Advanced Technology R&D Center, Mitsubishi Electric Corporation, Amagasaki City, Hyogo, Japan, 661-8661
suzuki.shunkei@dn.mitsubishielectric.co.jp

Sumeet Changla

Mechanical and Aerospace Engineering, the University of Texas at Arlington, Arlington, TX, USA, 76019
sumeet.x.changla@daimler.com

Aditya Pinto

Mechanical and Aerospace Engineering, the University of Texas at Arlington, Arlington, TX, USA, 76019
aditya.pinto@mavs.uta.edu

Shigetoshi Ipposhi

Advanced Technology R&D Center, Mitsubishi Electric Corporation, Amagasaki City, Hyogo, Japan, 661-8661
ipposhi.shigetoshi@aj.mitsubishielectric.co.jp

Donghyun Shin

School of Engineering & Technology, Central Michigan University, Mt Pleasant, MI, USA, 48859
shin1d@cmich.edu

1Corresponding author.

ASME doi:10.1115/1.4041241 History: Received September 26, 2017; Revised August 08, 2018

Abstract

Recent studies have shown that doping nanoparticles into a molten salt eutectic can induce salt molecules to form a stelliform nanostructure that can enhance the effective heat capacity of the mixture. This phenomenon can result from a unique characteristic of a eutectic molten salt system, which can self-form a nanostructure on a nanoscale solid surface. Hence, such an enhancement was only observed in a molten salt eutectic. Similarly, a stelliform nanostructure can be artificially synthesized and dispersed in other liquids. Mixing polar-ended molecules with a nanoparticle in a medium can induce the polar-ended molecules ionically bonded to a nanoparticle to form a stelliform nanostructure. Hence, this may enhance the effective heat capacity of the mixture. In this study, we disperse various nanoparticles and polar-ended materials into a sodium acetate trihydrate at different ratios to explore the effect of nanoparticle type and concentration as well as polar-ended materials and their concentrations on the resultant heat capacity of sodium acetate trihydrate. The result shows the specific heat capacity was the highest with silica nanoparticle at 1 % concentration of weight and polar-ended material at 4 % concentration.

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