Title :
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
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;
Conference_Titel :
Energy and Environment Technology, 2009. ICEET '09. International Conference on
Conference_Location :
Guilin, Guangxi
Print_ISBN :
978-0-7695-3819-8
DOI :
10.1109/ICEET.2009.11
