Composite “LiCl/MWCNT” as Advanced Water Sorbent for Thermal Energy Storage: Sorption Dynamics Full article
| Journal |
Solar Energy Materials and Solar Cells
ISSN: 0927-0248 |
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| Output data | Year: 2018, Volume: 176, Pages: 273-279 Pages count : 7 DOI: 10.1016/j.solmat.2017.12.011 | ||||||
| Tags | Composite sorbent “salt/matrix”, Lithium chloride, Multiwall carbon nanotubes, Sorption thermal energy storage, Water vapor | ||||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Russian Foundation for Basic Research | 15-53-53096 |
| 2 | Federal Agency for Scientific Organizations | 0303-2016-0013 |
Abstract:
Sorption heat storage (SHS) is a promising technology towards efficient use of renewable energy sources. Composite materials based on hygroscopic salts have a high potential for SHS in term of the heat storage capacity. Recently, a new sorbent “LiCl confined to Multi-Wall Carbon NanoTubes (MWCNT)” with enhanced storage capacity (1.7 kJ/g) has been suggested for SHS. This work addresses the dynamic study of water sorption on this material under operating conditions of a daily heat storage cycle. The study consists of three parts: (1) shaping the LiCl/MWCNT composite as grains (GP) and pellets with (PB) and without a binder (PP); (2) water sorption dynamics under conditions of the selected SHS cycle; (3) evaluation of the specific power achievable. Various configurations of the adsorbent bed were tested, namely, the loose grains GP placed on a metal support, and the pellets PB and PP glued to the support. The dynamic curves of water sorption obey an exponential equation. The PB configuration ensured a maximal specific power of 11.2 kW/kg (at 70% conversion) during the heat storage stage. During the heat release stage, the specific power is lower (5.4 kW/kg), probably due to a kinetic hindrance attributed to solid-solid transformation during the decomposition of LiCl·H2O complex towards the anhydrous salt. The high specific power along with the large heat storage capacity make the LiCl/MWCNT composite a promising new candidate for SHS.
Cite:
Grekova A.D.
, Gordeeva L.G.
, Lu Z.
, Wang R.
, Aristov Y.I.
Composite “LiCl/MWCNT” as Advanced Water Sorbent for Thermal Energy Storage: Sorption Dynamics
Solar Energy Materials and Solar Cells. 2018. V.176. P.273-279. DOI: 10.1016/j.solmat.2017.12.011 WOS Scopus РИНЦ ANCAN OpenAlex
Composite “LiCl/MWCNT” as Advanced Water Sorbent for Thermal Energy Storage: Sorption Dynamics
Solar Energy Materials and Solar Cells. 2018. V.176. P.273-279. DOI: 10.1016/j.solmat.2017.12.011 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Oct 6, 2017 |
| Accepted: | Dec 11, 2017 |
| Published online: | Dec 22, 2017 |
| Published print: | Mar 1, 2018 |
Identifiers:
| Web of science: | WOS:000423643800031 |
| Scopus: | 2-s2.0-85038216008 |
| Elibrary: | 35478507 |
| Chemical Abstracts: | 2017:1994429 |
| Chemical Abstracts (print): | 170:453602 |
| OpenAlex: | W2779489414 |