A Selection and Optimization Experimental Study of Additives to Thermal Energy Storage Material Sodium Acetate Trihydrate

Author

Mao, Jinfeng ; Li, Jintian ; Peng, Guanzhong ; Jintian Li

Author_Institution

Eng. Inst. of Corps of Eng., PLA Univ. of Sci. & Tech., Nanjing, China

Volume

1

fYear

2009

fDate

16-18 Oct. 2009

Firstpage

14

Lastpage

17

Abstract

In order to solve the problem of supercooling and phase segregation of sodium acetate trihydrate during solidification, it is necessary to add appropriate nucleating agent and thickeners. Five commonly used nucleating agents, i.e. Na₂HPO₄-12H₂O, Na₃PO₄-12H₂O, Na₂CO₃-10H₂O, Na₂SiO₃-9H₂O and Na₂B₄O₇-10H₂O, three thickeners, including carboxymethyl cellulose and gelatin, and polyacrylamide were selected as additives to improve the phase-change energy storage property after the research and comparison. Sodium acetate trihydrate as an energy storage medium, nucleating agent and thickeners were assorted randomly to configure sample. The heat storage-release experiment was conducted. Finally several effective additives are developed, and the mass ratio of these formulas were studied experimentally. The best two dosage formulations were found.

Keywords

additives; phase change materials; sodium compounds; solidification; supercooling; thermal energy storage; additives; dosage formulations; energy storage medium; heat storage-release; nucleating agent; phase segregation; phase-change energy storage property; sodium acetate trihydrate; solidification; supercooling; thermal energy storage material; thickeners; Additives; Boilers; Cooling; Energy storage; Mortar; Ocean temperature; Phase change materials; Power engineering and energy; Programmable logic arrays; Water storage; nucleating agent; sodium acetate trihydrate; supercooling; thickener;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy and Environment Technology, 2009. ICEET '09. International Conference on

Conference_Location

Guilin, Guangxi

Print_ISBN

978-0-7695-3819-8

Type

conf

DOI

10.1109/ICEET.2009.11

Filename

5363025