Microencapsulation of bio-based phase change materials with silica coated inorganic shell for thermal energy storage
Abstract
This study investigates the use of cenospheres to encapsulate a low-cost, bio-based phase change material (PCM) derived from refined edible vegetable oil. Chemical etching was applied on the cenospheres to create holes through which melted PCM was loaded to produce a PCM microcapsule. Subsequently, a silica-based coating was applied to seal the perforations and prevent leakage of PCM from the microcapsule. Microstructural, chemical compatibility, thermal, and leakage properties of the produced silica coated PCM microcapsule (SCPCM) were assessed. No leakage was found for this new microcapsule, and higher thermal stability and conductivity were noted. Thermal decomposition of the PCM in SCPCM was delayed by about 16 degrees C attributable to the silica coating. Additionally, an enhanced compressive strength performance was achieved at 10 vol% of sand replacement with SCPCM. 20-30 vol% replacement of sand with cenosphere microcapsules seems to be the optimal range for reasonable compressive strength. The workability of the mortar incorporated with SCPCM decreased when the replacement level increased to more than 30 vol% due to the hydrophilic nature of the silica deposit. This study has demonstrated the potential of cenospheres as inorganic shell for PCMs and the potential for incorporation of SCPCM into construction materials for thermalmore »
- Authors:
-
- Univ. of Alabama, Tuscaloosa, AL (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office; National Science Foundation (NSF)
- OSTI Identifier:
- 1959310
- Alternate Identifier(s):
- OSTI ID: 2242518
- Report Number(s):
- NREL/JA-5500-85122
Journal ID: ISSN 2352-7102; MainId:85895;UUID:5cee4b5c-093f-45c4-b8b3-c9e321d2b172;MainAdminID:68886
- Grant/Contract Number:
- AC36-08GO28308; EE0008677; CMMI-1563551; IIP-2118493; EE-0008677
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Building Engineering
- Additional Journal Information:
- Journal Volume: 67; Journal ID: ISSN 2352-7102
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; building envelope; cement; concrete; microencapsulated phase change materials; phase change materials; thermal energy storage
Citation Formats
Ismail, Abdulmalik, Zhou, Jingyi, Aday, Anastasia, Davidoff, Isabel, Odukomaiya, Adewale, and Wang, Jialai. Microencapsulation of bio-based phase change materials with silica coated inorganic shell for thermal energy storage. United States: N. p., 2023.
Web. doi:10.1016/j.jobe.2023.105981.
Ismail, Abdulmalik, Zhou, Jingyi, Aday, Anastasia, Davidoff, Isabel, Odukomaiya, Adewale, & Wang, Jialai. Microencapsulation of bio-based phase change materials with silica coated inorganic shell for thermal energy storage. United States. https://doi.org/10.1016/j.jobe.2023.105981
Ismail, Abdulmalik, Zhou, Jingyi, Aday, Anastasia, Davidoff, Isabel, Odukomaiya, Adewale, and Wang, Jialai. Sat .
"Microencapsulation of bio-based phase change materials with silica coated inorganic shell for thermal energy storage". United States. https://doi.org/10.1016/j.jobe.2023.105981. https://www.osti.gov/servlets/purl/1959310.
@article{osti_1959310,
title = {Microencapsulation of bio-based phase change materials with silica coated inorganic shell for thermal energy storage},
author = {Ismail, Abdulmalik and Zhou, Jingyi and Aday, Anastasia and Davidoff, Isabel and Odukomaiya, Adewale and Wang, Jialai},
abstractNote = {This study investigates the use of cenospheres to encapsulate a low-cost, bio-based phase change material (PCM) derived from refined edible vegetable oil. Chemical etching was applied on the cenospheres to create holes through which melted PCM was loaded to produce a PCM microcapsule. Subsequently, a silica-based coating was applied to seal the perforations and prevent leakage of PCM from the microcapsule. Microstructural, chemical compatibility, thermal, and leakage properties of the produced silica coated PCM microcapsule (SCPCM) were assessed. No leakage was found for this new microcapsule, and higher thermal stability and conductivity were noted. Thermal decomposition of the PCM in SCPCM was delayed by about 16 degrees C attributable to the silica coating. Additionally, an enhanced compressive strength performance was achieved at 10 vol% of sand replacement with SCPCM. 20-30 vol% replacement of sand with cenosphere microcapsules seems to be the optimal range for reasonable compressive strength. The workability of the mortar incorporated with SCPCM decreased when the replacement level increased to more than 30 vol% due to the hydrophilic nature of the silica deposit. This study has demonstrated the potential of cenospheres as inorganic shell for PCMs and the potential for incorporation of SCPCM into construction materials for thermal energy storage (TES).},
doi = {10.1016/j.jobe.2023.105981},
journal = {Journal of Building Engineering},
number = ,
volume = 67,
place = {United States},
year = {Sat Jan 28 00:00:00 EST 2023},
month = {Sat Jan 28 00:00:00 EST 2023}
}
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