NOVEL COMPOSITE PHASE CHANGE MATERIAL BASED ON WASTE FOUNDRY SAND FOR MEDIUM-HIGH TEMPERATURE WASTE HEAT STORAGE AND RECOVERY APPLICATIONS

Argyrios Anagnostopoulos; M. Elena Navarro; Shivangi Swarma; Abdalqader Ahmad; Yelaman Maksum; Yulong Ding

NOVEL COMPOSITE PHASE CHANGE MATERIAL BASED ON WASTE FOUNDRY SAND FOR MEDIUM-HIGH TEMPERATURE WASTE HEAT STORAGE AND RECOVERY APPLICATIONS

Argyrios Anagnostopoulos^*, M. Elena Navarro, Shivangi Swarma, Abdalqader Ahmad, Yelaman Maksum, Yulong Ding

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

Abstract

Waste foundry sand (WFS), the disregarded molding sand from the casting industry, is a byproduct with increasing economic and environmental impact due to landfill maintenance costs and stricter regulations. Only a small fraction (11%) of WFS is currently reused. In this work a novel valorization pathway for WFS is proposed, as a thermal energy storage material. WFS is mixed with molten NaNO₃ and clay and then sintered, to produce a composite phase change material (CPCM). The fabricated CPCM is found to have good thermal and structural stability up to 400 °C. Its optimal composition with a mass ratio of 0.6-0.3-0.1 NaNO₃-WFS-Clay has an specific energy density of 628±27 kJ/kg and an average thermal conductivity is 1.38 W/mK in a temperature range of 25-400 °C. The CPCM has good mechanical strength and a low coefficient of thermal expansion, compared to that of NaNO₃. This material can be applied in medium-high temperature thermal energy storage and waste heat recovery applications, increasing the upcycling potential of WFS in a sustainable manner.

Original language	English
Journal	International Heat Transfer Conference
Volume	17
Publication status	Published - 2023
Event	17th International Heat Transfer Conference, IHTC 2023 - Cape Town, South Africa Duration: 14 Aug 2023 → 18 Aug 2023

Bibliographical note

Funding Information:
The authors would like to acknowledge Transforming Foundation Industries Network+ in the context of THERMCAST (EPSRC grant EP/V026402/1).

Publisher Copyright:
© 2023 Begell House Inc.. All rights reserved.

Keywords

composite phase change materials
high temperature
molten salt
Thermal energy storage
waste foundry sand

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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Cite this

@article{b0e3e8390430484e8f6a6338b984476d,

title = "NOVEL COMPOSITE PHASE CHANGE MATERIAL BASED ON WASTE FOUNDRY SAND FOR MEDIUM-HIGH TEMPERATURE WASTE HEAT STORAGE AND RECOVERY APPLICATIONS",

abstract = "Waste foundry sand (WFS), the disregarded molding sand from the casting industry, is a byproduct with increasing economic and environmental impact due to landfill maintenance costs and stricter regulations. Only a small fraction (11%) of WFS is currently reused. In this work a novel valorization pathway for WFS is proposed, as a thermal energy storage material. WFS is mixed with molten NaNO3 and clay and then sintered, to produce a composite phase change material (CPCM). The fabricated CPCM is found to have good thermal and structural stability up to 400 °C. Its optimal composition with a mass ratio of 0.6-0.3-0.1 NaNO3-WFS-Clay has an specific energy density of 628±27 kJ/kg and an average thermal conductivity is 1.38 W/mK in a temperature range of 25-400 °C. The CPCM has good mechanical strength and a low coefficient of thermal expansion, compared to that of NaNO3. This material can be applied in medium-high temperature thermal energy storage and waste heat recovery applications, increasing the upcycling potential of WFS in a sustainable manner.",

keywords = "composite phase change materials, high temperature, molten salt, Thermal energy storage, waste foundry sand",

author = "Argyrios Anagnostopoulos and Navarro, {M. Elena} and Shivangi Swarma and Abdalqader Ahmad and Yelaman Maksum and Yulong Ding",

note = "Funding Information: The authors would like to acknowledge Transforming Foundation Industries Network+ in the context of THERMCAST (EPSRC grant EP/V026402/1). Publisher Copyright: {\textcopyright} 2023 Begell House Inc.. All rights reserved.; 17th International Heat Transfer Conference, IHTC 2023 ; Conference date: 14-08-2023 Through 18-08-2023",

year = "2023",

language = "English",

volume = "17",

journal = "International Heat Transfer Conference",

issn = "2377-424X",

}

TY - JOUR

T1 - NOVEL COMPOSITE PHASE CHANGE MATERIAL BASED ON WASTE FOUNDRY SAND FOR MEDIUM-HIGH TEMPERATURE WASTE HEAT STORAGE AND RECOVERY APPLICATIONS

AU - Anagnostopoulos, Argyrios

AU - Navarro, M. Elena

AU - Swarma, Shivangi

AU - Ahmad, Abdalqader

AU - Maksum, Yelaman

AU - Ding, Yulong

N1 - Funding Information: The authors would like to acknowledge Transforming Foundation Industries Network+ in the context of THERMCAST (EPSRC grant EP/V026402/1). Publisher Copyright: © 2023 Begell House Inc.. All rights reserved.

PY - 2023

Y1 - 2023

N2 - Waste foundry sand (WFS), the disregarded molding sand from the casting industry, is a byproduct with increasing economic and environmental impact due to landfill maintenance costs and stricter regulations. Only a small fraction (11%) of WFS is currently reused. In this work a novel valorization pathway for WFS is proposed, as a thermal energy storage material. WFS is mixed with molten NaNO3 and clay and then sintered, to produce a composite phase change material (CPCM). The fabricated CPCM is found to have good thermal and structural stability up to 400 °C. Its optimal composition with a mass ratio of 0.6-0.3-0.1 NaNO3-WFS-Clay has an specific energy density of 628±27 kJ/kg and an average thermal conductivity is 1.38 W/mK in a temperature range of 25-400 °C. The CPCM has good mechanical strength and a low coefficient of thermal expansion, compared to that of NaNO3. This material can be applied in medium-high temperature thermal energy storage and waste heat recovery applications, increasing the upcycling potential of WFS in a sustainable manner.

AB - Waste foundry sand (WFS), the disregarded molding sand from the casting industry, is a byproduct with increasing economic and environmental impact due to landfill maintenance costs and stricter regulations. Only a small fraction (11%) of WFS is currently reused. In this work a novel valorization pathway for WFS is proposed, as a thermal energy storage material. WFS is mixed with molten NaNO3 and clay and then sintered, to produce a composite phase change material (CPCM). The fabricated CPCM is found to have good thermal and structural stability up to 400 °C. Its optimal composition with a mass ratio of 0.6-0.3-0.1 NaNO3-WFS-Clay has an specific energy density of 628±27 kJ/kg and an average thermal conductivity is 1.38 W/mK in a temperature range of 25-400 °C. The CPCM has good mechanical strength and a low coefficient of thermal expansion, compared to that of NaNO3. This material can be applied in medium-high temperature thermal energy storage and waste heat recovery applications, increasing the upcycling potential of WFS in a sustainable manner.

KW - composite phase change materials

KW - high temperature

KW - molten salt

KW - Thermal energy storage

KW - waste foundry sand

UR - http://www.scopus.com/inward/record.url?scp=85176588572&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85176588572

SN - 2377-424X

VL - 17

JO - International Heat Transfer Conference

JF - International Heat Transfer Conference

T2 - 17th International Heat Transfer Conference, IHTC 2023

Y2 - 14 August 2023 through 18 August 2023

ER -

NOVEL COMPOSITE PHASE CHANGE MATERIAL BASED ON WASTE FOUNDRY SAND FOR MEDIUM-HIGH TEMPERATURE WASTE HEAT STORAGE AND RECOVERY APPLICATIONS

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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