Coccia, Gianluca ; Aquilanti, Alessia ; Tomassetti, Sebastiano ; Muciaccia, Pio Francesco ; Di Nicola, Giovanni (2022)
Experimental Analysis of Nucleation Triggering in a Thermal Energy Storage Based on Xylitol Used in a Portable Solar Box Cooker.
In: Energies, 14 (18)
doi: 10.3390/en14185981
Article, Bibliographie
This is the latest version of this item.
Abstract
Sugar alcohols have interesting thermodynamic properties that make them good options as heat storage materials (HSMs) to be used in solar cookers. Among sugar alcohols, xylitol is affected by severe supercooling that can significantly alter its usefulness in thermal energy storage (TES) systems. To overcome the supercooling issue, in this work the thermal behavior of a xylitol-based TES installed in a portable solar box cooker was investigated experimentally. The solar cooker has a 4.08 concentration ratio and the TES is a double-pot system filled with 2.5 kg of commercial-grade xylitol. The TES includes a manual mixing device that can be used to trigger the nucleation of xylitol. The effectiveness of the TES system with and without triggering was assessed through several outdoor tests, divided into heating and cooling phases, using silicone oil as absorbing media. It was found that the average load cooling time, in the temperature range of the test fluid from 110 to 80 °C, increased by about 346% when the solar cooker was equipped with the xylitol-triggered TES. The mixing device can therefore be considered an effective solution for regarding xylitol as an actual and performing phase change material.
| Item Type: | Article |
|---|---|
| Erschienen: | 2022 |
| Creators: | Coccia, Gianluca ; Aquilanti, Alessia ; Tomassetti, Sebastiano ; Muciaccia, Pio Francesco ; Di Nicola, Giovanni |
| Type of entry: | Bibliographie |
| Title: | Experimental Analysis of Nucleation Triggering in a Thermal Energy Storage Based on Xylitol Used in a Portable Solar Box Cooker |
| Language: | English |
| Date: | 2022 |
| Publisher: | MDPI |
| Journal or Publication Title: | Energies |
| Volume of the journal: | 14 |
| Issue Number: | 18 |
| Collation: | 21 Seiten |
| DOI: | 10.3390/en14185981 |
| Corresponding Links: | |
| Abstract: | Sugar alcohols have interesting thermodynamic properties that make them good options as heat storage materials (HSMs) to be used in solar cookers. Among sugar alcohols, xylitol is affected by severe supercooling that can significantly alter its usefulness in thermal energy storage (TES) systems. To overcome the supercooling issue, in this work the thermal behavior of a xylitol-based TES installed in a portable solar box cooker was investigated experimentally. The solar cooker has a 4.08 concentration ratio and the TES is a double-pot system filled with 2.5 kg of commercial-grade xylitol. The TES includes a manual mixing device that can be used to trigger the nucleation of xylitol. The effectiveness of the TES system with and without triggering was assessed through several outdoor tests, divided into heating and cooling phases, using silicone oil as absorbing media. It was found that the average load cooling time, in the temperature range of the test fluid from 110 to 80 °C, increased by about 346% when the solar cooker was equipped with the xylitol-triggered TES. The mixing device can therefore be considered an effective solution for regarding xylitol as an actual and performing phase change material. |
| Uncontrolled Keywords: | sugar alcohol, supercooling, nucleation triggering, heating phase, cooling phase, thermal energy storage, phase change material |
| Classification DDC: | 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering |
| Divisions: | 13 Department of Civil and Environmental Engineering Sciences 13 Department of Civil and Environmental Engineering Sciences > Institute of Construction and Building Materials |
| Date Deposited: | 02 Aug 2024 12:40 |
| Last Modified: | 02 Aug 2024 12:40 |
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| Suche nach Titel in: | TUfind oder in Google |
Available Versions of this Item
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Experimental Analysis of Nucleation Triggering in a Thermal Energy Storage Based on Xylitol Used in a Portable Solar Box Cooker. (deposited 02 May 2022 11:45)
- Experimental Analysis of Nucleation Triggering in a Thermal Energy Storage Based on Xylitol Used in a Portable Solar Box Cooker. (deposited 02 Aug 2024 12:40) [Currently Displayed]
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