Novel key parameter for eutectic nitrates based nanofluids selection for concentrating solar power (CSP) system

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Novel key parameter for eutectic nitrates based nanofluids selection for concentrating solar power (CSP) system. / Jiang, Zhu; Palacios, Anabel; Lei, Xianzhang; Navarro, M. E.; Qiao, Geng; Mura, Ernesto; Xu, Guizhi; Ding, Yulong.

In: Applied Energy, Vol. 235, 01.02.2019, p. 529-542.

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Jiang, Zhu ; Palacios, Anabel ; Lei, Xianzhang ; Navarro, M. E. ; Qiao, Geng ; Mura, Ernesto ; Xu, Guizhi ; Ding, Yulong. / Novel key parameter for eutectic nitrates based nanofluids selection for concentrating solar power (CSP) system. In: Applied Energy. 2019 ; Vol. 235. pp. 529-542.

Bibtex

@article{42013bf487a744918944a4dfa70cffc3,
title = "Novel key parameter for eutectic nitrates based nanofluids selection for concentrating solar power (CSP) system",
abstract = "A high-performance heat transfer fluid (HTF) plays a crucial role in the overall performance and efficiency of the concentrating solar power (CSP) systems for utilizing solar energy. Molten salt-based nanofluids, which may offer a promising solution to help reduce the size and cost of CSP system, have attracted increasing attention. However, there is still no comprehensive assessment strategy that considers the conflictive effects of adding nanoparticles in HTFs, such as the compromise between energy storage capacity increase and pumping cost increase. In this work, a methodology for nanofluids screening and selection is proposed and a novel parameter (R) is determined to assess the conflictive effect. The parameter (R) indicates the relative pumping cost per unit stored energy of the nanofluid compared to its base fluid. Three promising eutectics nitrate based nanofluids (NaNO3–KNO3, LiNO3–NaNO3–KNO3, LiNO3–NaNO3–KNO3–Ca(NO3)2) doping with 0.5 wt.% and 1 wt.% silica nanoparticles were selected and evaluated by the proposed methodology. As a result, adding nanoparticles into binary salts always present a negative effect (R = 1.03–1.22) when considering the relative pumping cost for per unit energy. For ternary salt, adding 1 wt.% silica nanoparticles would be more preferable with a decrease of the parameter (R = 0.89–0.97, R < 1). In terms of quaternary, adding nanoparticles into quaternary does not change the parameter significantly (R = 0.96–1.04).",
keywords = "Heat transfer fluids, High temperature, Molten salt, Nanofluids, Rheological behaviour, Specific heat",
author = "Zhu Jiang and Anabel Palacios and Xianzhang Lei and Navarro, {M. E.} and Geng Qiao and Ernesto Mura and Guizhi Xu and Yulong Ding",
year = "2019",
month = feb
day = "1",
doi = "10.1016/j.apenergy.2018.10.114",
language = "English",
volume = "235",
pages = "529--542",
journal = "Applied Energy",
issn = "0306-2619",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Novel key parameter for eutectic nitrates based nanofluids selection for concentrating solar power (CSP) system

AU - Jiang, Zhu

AU - Palacios, Anabel

AU - Lei, Xianzhang

AU - Navarro, M. E.

AU - Qiao, Geng

AU - Mura, Ernesto

AU - Xu, Guizhi

AU - Ding, Yulong

PY - 2019/2/1

Y1 - 2019/2/1

N2 - A high-performance heat transfer fluid (HTF) plays a crucial role in the overall performance and efficiency of the concentrating solar power (CSP) systems for utilizing solar energy. Molten salt-based nanofluids, which may offer a promising solution to help reduce the size and cost of CSP system, have attracted increasing attention. However, there is still no comprehensive assessment strategy that considers the conflictive effects of adding nanoparticles in HTFs, such as the compromise between energy storage capacity increase and pumping cost increase. In this work, a methodology for nanofluids screening and selection is proposed and a novel parameter (R) is determined to assess the conflictive effect. The parameter (R) indicates the relative pumping cost per unit stored energy of the nanofluid compared to its base fluid. Three promising eutectics nitrate based nanofluids (NaNO3–KNO3, LiNO3–NaNO3–KNO3, LiNO3–NaNO3–KNO3–Ca(NO3)2) doping with 0.5 wt.% and 1 wt.% silica nanoparticles were selected and evaluated by the proposed methodology. As a result, adding nanoparticles into binary salts always present a negative effect (R = 1.03–1.22) when considering the relative pumping cost for per unit energy. For ternary salt, adding 1 wt.% silica nanoparticles would be more preferable with a decrease of the parameter (R = 0.89–0.97, R < 1). In terms of quaternary, adding nanoparticles into quaternary does not change the parameter significantly (R = 0.96–1.04).

AB - A high-performance heat transfer fluid (HTF) plays a crucial role in the overall performance and efficiency of the concentrating solar power (CSP) systems for utilizing solar energy. Molten salt-based nanofluids, which may offer a promising solution to help reduce the size and cost of CSP system, have attracted increasing attention. However, there is still no comprehensive assessment strategy that considers the conflictive effects of adding nanoparticles in HTFs, such as the compromise between energy storage capacity increase and pumping cost increase. In this work, a methodology for nanofluids screening and selection is proposed and a novel parameter (R) is determined to assess the conflictive effect. The parameter (R) indicates the relative pumping cost per unit stored energy of the nanofluid compared to its base fluid. Three promising eutectics nitrate based nanofluids (NaNO3–KNO3, LiNO3–NaNO3–KNO3, LiNO3–NaNO3–KNO3–Ca(NO3)2) doping with 0.5 wt.% and 1 wt.% silica nanoparticles were selected and evaluated by the proposed methodology. As a result, adding nanoparticles into binary salts always present a negative effect (R = 1.03–1.22) when considering the relative pumping cost for per unit energy. For ternary salt, adding 1 wt.% silica nanoparticles would be more preferable with a decrease of the parameter (R = 0.89–0.97, R < 1). In terms of quaternary, adding nanoparticles into quaternary does not change the parameter significantly (R = 0.96–1.04).

KW - Heat transfer fluids

KW - High temperature

KW - Molten salt

KW - Nanofluids

KW - Rheological behaviour

KW - Specific heat

UR - http://www.scopus.com/inward/record.url?scp=85056237517&partnerID=8YFLogxK

U2 - 10.1016/j.apenergy.2018.10.114

DO - 10.1016/j.apenergy.2018.10.114

M3 - Article

AN - SCOPUS:85056237517

VL - 235

SP - 529

EP - 542

JO - Applied Energy

JF - Applied Energy

SN - 0306-2619

ER -