Adapting the MgO-CO2 Working Pair for Thermochemical Energy Storage by Doping with Salts: Effect of the (LiK)NO3 Content | Sciact - CRIS-система Института катализа

Adapting the MgO-CO2 Working Pair for Thermochemical Energy Storage by Doping with Salts: Effect of the (LiK)NO3 Content Научная публикация

Конференция

Heat Powered Cycles Conference
16-19 сент. 2018 , Bayreuth

Журнал

Energies
ISSN: 1996-1073

Вых. Данные

Год: 2019, Том: 12, Номер: 11, Номер статьи : 2262, Страниц : 13 DOI: 10.3390/en12122262

Ключевые слова

Eutectic mixture; Magnesium carbonate; Magnesium oxide; Salt modification; Thermochemical energy storage

Авторы

Kim Seon Tae ¹ , Miura Haruka ¹ , Takasu Hiroki ¹ , Kato Yukitaka ¹ , Shkatulov Alexandr ² , Aristov Yuri ^1,3

Организации

1	Tokyo Institute of Technology, 2-12-1-N1-22, Ōokayama, Meguro-ku, Tokyo, 152-8550, Japan
2	Department of Applied Physics, Eindhoven University of Technology, De Rondom 70, AP Eindhoven, 5612, Netherlands
3	Boreskov Institute of Catalysis, Ac. Lavrentiev av. 5, Novosibirsk, 630090, Russian Federation

Информация о финансировании (1)

Tōkyō Kōgyō Daigaku; Tokodai

The MgO-CO2 working pair has been regarded as prospective for thermochemical energy storage (TCES) due to its relatively high heat storage capacity, low cost, and wide availability. This study is aimed at the optimization of the molar salt content, α, for the MgO modified with the eutectic mixture of LiNO3 and KNO3 (Li0.42K0.58NO3) which was earlier shown to provide high conversion, ∆x, in heat-storage/release processes at 300–400 ◦C. The composites that have different salt content were prepared and carbonation kinetics was investigated under various conditions (carbonation temperature, Tcarb., is 290–360 ◦C and CO2 pressure, P(CO2), is 50–101 kPa). Significant accelerating effect was revealed at α ≥ 0.05, and the ∆x value was maximized at α = 0.10–0.20. The largest conversion of 0.70 was detected at α = 0.10 and Tcarb. = 350 ◦C that corresponds to the specific useful heat (Qcomp.) is 1.63 MJ/kg-composite. However, the salt content of 0.20 ensures the high conversion, ∆x = 0.63–0.67 and Qcomp. = 1.18–1.25 MJ/kg-composite in the whole temperature range between 290 and 350 ◦C. The (LiK)NO3/MgO composite with an optimal salt content of 0.20 exhibits reasonable durability through cyclic experiment at 330 ◦C, namely, the stabilized reacted conversion ∆x = 0.34 (Qcomp. = 0.64 MJ/kg-composite). The studied (Li0.42K0.58)NO3 promoted MgO-CO2 working pair has good potential as thermochemical storage material of middle temperature heat (300–400 ◦C). © 2019 by the authors.

Kim S.T. , Miura H. , Takasu H. , Kato Y. , Shkatulov A. , Aristov Y.
Adapting the MgO-CO2 Working Pair for Thermochemical Energy Storage by Doping with Salts: Effect of the (LiK)NO3 Content

Energies. 2019. V.12. N11. 2262 :1-13. DOI: 10.3390/en12122262 WOS Scopus РИНЦ CAPlusCA OpenAlex

Полный текст от издателя

Поступила в редакцию:	30 апр. 2019 г.
Опубликована в печати:	1 июн. 2019 г.
Принята к публикации:	11 июн. 2019 г.
Опубликована online:	13 июн. 2019 г.

Web of science:	WOS:000473821400035
Scopus:	2-s2.0-85067251712
РИНЦ:	41634904
Chemical Abstracts:	2019:1932795
Chemical Abstracts (print):	172:77410
OpenAlex:	W2950762891

БД	Цитирований
Scopus	11
Web of science	11
РИНЦ	11
OpenAlex	12