A review of different models, mechanisms, theories and parameters in tuning the specific heat capacity of nano-phase change materials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F23%3A00575715" target="_blank" >RIV/61388955:_____/23:00575715 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0345459" target="_blank" >https://hdl.handle.net/11104/0345459</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.est.2023.108678" target="_blank" >10.1016/j.est.2023.108678</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A review of different models, mechanisms, theories and parameters in tuning the specific heat capacity of nano-phase change materials

Popis výsledku v původním jazyce

Cost-effective energy storage plays a critical role in transitioning towards a low-carbon society. Energy can be effectively stored as heat or electricity. Among various storage methods for high-temperature applications, molten salt tanks have gained significant popularity. Notably, molten salt tanks are 33 times more cost-effective than electric batteries in terms of storing a kilowatt-hour. Due to their favourable thermophysical properties, molten salts are the predominant phase change materials (PCMs) utilized for storage. Specifically, the specific heat capacity of the material is of particular interest when evaluating its thermal storage capacity, particularly in solar power plants. However, its low specific heat capacity is a major barrier to the widespread use of molten salt technology in energy storage applications. Therefore, minute quantities of nano-scaled particles within the molten salt mixture are important in enhancing the specific heat capacity (Cp). Consequently, studying these particles and their unpredictable nature has become a continuous research focus, with a clear understanding of the observed changes in specific heat capacity yet to be achieved. This article comprehensively reviews recent developments in theoretical models and mechanisms underlying heat capacity enhancement. Furthermore, it meticulously examines the influence of nanoparticle (NP) morphology (size, shape, and surface chemistry) as well as nanoparticle concentration on specific heat capacity, alongside the mechanisms contributing to enhanced thermal conductivity. Additionally, the impact of various factors such as heating rates, physical models, different differential scanning calorimetry (DSC) methods, sample moisture, and sample geometry on the specific heat capacity of the material is thoroughly considered and analyzed. By carefully assessing these parameters and conditions, including heating rate, geometry, and models/methods, this review offers valuable insights into selecting nanofluids with increased heat capacity for practical applications. Finally, the review highlights the key challenges and research gaps that need to be addressed for future advancements in nanofluid development and concludes by summarizing the main findings.

Název v anglickém jazyce

A review of different models, mechanisms, theories and parameters in tuning the specific heat capacity of nano-phase change materials

Popis výsledku anglicky

Cost-effective energy storage plays a critical role in transitioning towards a low-carbon society. Energy can be effectively stored as heat or electricity. Among various storage methods for high-temperature applications, molten salt tanks have gained significant popularity. Notably, molten salt tanks are 33 times more cost-effective than electric batteries in terms of storing a kilowatt-hour. Due to their favourable thermophysical properties, molten salts are the predominant phase change materials (PCMs) utilized for storage. Specifically, the specific heat capacity of the material is of particular interest when evaluating its thermal storage capacity, particularly in solar power plants. However, its low specific heat capacity is a major barrier to the widespread use of molten salt technology in energy storage applications. Therefore, minute quantities of nano-scaled particles within the molten salt mixture are important in enhancing the specific heat capacity (Cp). Consequently, studying these particles and their unpredictable nature has become a continuous research focus, with a clear understanding of the observed changes in specific heat capacity yet to be achieved. This article comprehensively reviews recent developments in theoretical models and mechanisms underlying heat capacity enhancement. Furthermore, it meticulously examines the influence of nanoparticle (NP) morphology (size, shape, and surface chemistry) as well as nanoparticle concentration on specific heat capacity, alongside the mechanisms contributing to enhanced thermal conductivity. Additionally, the impact of various factors such as heating rates, physical models, different differential scanning calorimetry (DSC) methods, sample moisture, and sample geometry on the specific heat capacity of the material is thoroughly considered and analyzed. By carefully assessing these parameters and conditions, including heating rate, geometry, and models/methods, this review offers valuable insights into selecting nanofluids with increased heat capacity for practical applications. Finally, the review highlights the key challenges and research gaps that need to be addressed for future advancements in nanofluid development and concludes by summarizing the main findings.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA22-25953S" target="_blank" >GA22-25953S: Grafenem indukovaný přenos energie a jeho uplatnění v biofyzice lipidových dvojvrstev</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Energy Storage

ISSN

2352-152X

e-ISSN

2352-1538

Svazek periodika

72

Číslo periodika v rámci svazku

Part E

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

16

Strana od-do

108678

Kód UT WoS článku

001076319400001

EID výsledku v databázi Scopus

2-s2.0-85170259340