TES Nanoemulsions: A Review of Thermophysical Properties and Their Impact on System Design

Thermal energy storage materials (TES) are considered promising for a large number of applications, including solar energy storage, waste heat recovery, and enhanced building thermal performance. Among these, nanoemulsions have received a huge amount of attention. Despite the many reviews published on nanoemulsions, an insufficient number concentrate on the particularities and requirements of the energy field. Therefore, we aim to provide a review of the measurement, theoretical computation and impact of the physical properties of nanoemulsions, with an integrated perspective on the design of thermal energy storage equipment. Properties such as density, which is integral to the calculation of the volume required for storage; viscosity, which is a decisive factor in pressure loss and for transport equipment power requirements; and thermal conductivity, which determines the heating/cooling rate of the system or the specific heat directly influencing the storage capacity, are thoroughly discussed. A comparative, critical approach to all these interconnected properties in pertinent characteristic groups, in close association with the practical use of TES systems, is included. This work aims to highlight unresolved issues from previous investigations as well as to provide a summary of the numerical simulation and/or application of advanced algorithms for the modeling, optimization, and streamlining of TES systems.

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Preparation and Performance of Myristic Acid/Silicon Dioxide Composites as Thermal Energy Storage Materials

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.602-604.1086 ◽

2012 ◽

Vol 602-604 ◽

pp. 1086-1089

Author(s):

Qi Song Shi ◽

Kui Long Liu

Keyword(s):

Energy Storage ◽

Silicon Dioxide ◽

Phase Change ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Myristic Acid ◽

Phase Change Materials ◽

Waste Heat ◽

Energy Storage Materials ◽

Composite Phase Change Materials

The myristic acid/silicon dioxide composite materials were prepared by sol-gel methods. The myristic acid was used as the phase change material for thermal energy storage, with the SiO2 acting as the supporting material. The structural analysis of these form-stable myristic acid /SiO2 composite phase change materials was carried out using Fourier transformation infrared spectroscope (FT-IR).The microstructure of the form-stable composite phase change materials was observed by a scanning electronic microscope (SEM). The thermal properties was investigated by a differential scanning calorimeter (DSC).The SEM results showed that the myristic acid was well dispersed in the porous network of SiO2. And the new nanocomposite material has favorable thermal storage capacity and can be applied to solar energy storage, industrial waste heat, recovery of waste heat and as civilian structural materials.

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Selection Methodology of Potential Sensible Thermal Energy Storage Materials for Medium Temperature Applications

MATEC Web of Conferences ◽

10.1051/matecconf/202030701026 ◽

2020 ◽

Vol 307 ◽

pp. 01026 ◽

Cited By ~ 1

Author(s):

Soukaina Hrifech ◽

Hassan Agalit ◽

El Ghali Bennouna ◽

Abdelaziz Mimet

Keyword(s):

Energy Storage ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Waste Heat ◽

Energy Storage Materials ◽

Potential Candidate ◽

Medium Temperature ◽

Temperature Range ◽

Natural Rock ◽

Selection Methodology

Thermal energy storage (TES) component improves the revenue of a concentrating solar power (CSP) plant by allowing more heat to be stored and making the electric energy available during the absence of sunlight. The heat can be stored in three ways (sensible, latent, or thermochemical). The present work aims to identify and select cost-effective sensible TES systems suitable for the medium temperature range (100-300 °C) applications (e.g. Fresnel CSP plants, industrial waste heat recovery, etc.). Based on a literature review, a selection methodology is developed to select potential candidate solid TES media (e.g. natural rock, concrete, sand, etc. ) as filler material in direct or indirect contact with thermal oil, which is used generally as heat transfer fluid (HTF) for this temperature range. The main criteria and steps of this selection methodology are identified and they take into account the different decisive storage properties as thermo-physical and mechanical properties of the solid media. Finally, the potential candidate TES materials are identified for the targeted application and further indoor experimental investigations are briefly presented.

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Pyrazolium Phase Change Materials for Solar-Thermal and Wind Energy Storage

10.26434/chemrxiv.9784595 ◽

2019 ◽

Author(s):

Karolina Matuszek ◽

R. Vijayaraghavan ◽

Craig Forsyth ◽

Surianarayanan Mahadevan ◽

Mega Kar ◽

...

Keyword(s):

Energy Storage ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Phase Change Materials ◽

High Efficiency ◽

Scale Up ◽

Solar Thermal ◽

Energy Storage Materials ◽

Solar Thermal Energy ◽

Storage Materials

Renewable energy has the ultimate capacity to resolve the environmental and scarcity challenges of the world’s energy supplies. However, both the utility of these sources and the economics of their implementation are strongly limited by their intermittent nature; inexpensive means of energy storage therefore needs to be part of the design. Distributed thermal energy storage is surprisingly underdeveloped in this context, in part due to the lack of advanced storage materials. Here, we describe a novel family of thermal energy storage materials based on pyrazolium cation, that operate in the 100-220°C temperature range, offering safe, inexpensive capacity, opening new pathways for high efficiency collection and storage of both solar-thermal energy, as well as excess wind power. We probe the molecular origins of the high thermal energy storage capacity of these ionic materials and demonstrate extended cycling that provides a basis for further scale up and development.

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Form-stable and tough paraffin-Al2O3/high density polyethylene composites as environment-friendly thermal energy storage materials: preparation, characterization and analysis

Journal of Thermal Analysis and Calorimetry ◽

10.1007/s10973-020-10450-2 ◽

2021 ◽

Author(s):

Fei Cheng ◽

Yunfei Xu ◽

Zhenfei Lv ◽

Zhaohui Huang ◽

Minghao Fang ◽

...

Keyword(s):

Energy Storage ◽

Thermal Energy ◽

Thermal Energy Storage ◽

High Density Polyethylene ◽

High Density ◽

Energy Storage Materials ◽

Environment Friendly ◽

Storage Materials ◽

Polyethylene Composites ◽

Materials Preparation

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New Thermal Energy Storage Materials From Industrial Wastes: Compatibility of Steel Slag With the Most Common Heat Transfer Fluids

Journal of Solar Energy Engineering ◽

10.1115/1.4030450 ◽

2015 ◽

Vol 137 (4) ◽

Cited By ~ 2

Author(s):

Iñigo Ortega-Fernández ◽

Javier Rodríguez-Aseguinolaza ◽

Antoni Gil ◽

Abdessamad Faik ◽

Bruno D’Aguanno

Keyword(s):

Heat Transfer ◽

Energy Storage ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Steel Slag ◽

Industrial Wastes ◽

Energy Storage Materials ◽

Iron And Steel ◽

Heat Transfer Fluids ◽

Wide Range

Slag is one of the main waste materials of the iron and steel manufacturing. Every year about 20 × 106 tons of slag are generated in the U.S. and 43.5 × 106 tons in Europe. The valorization of this by-product as heat storage material in thermal energy storage (TES) systems has numerous advantages which include the possibility to extend the working temperature range up to 1000 °C, the reduction of the system cost, and at the same time, the decrease of the quantity of waste in the iron and steel industry. In this paper, two different electric arc furnace (EAF) slags from two companies located in the Basque Country (Spain) are studied. Their thermal stability and compatibility in direct contact with the most common heat transfer fluids (HTFs) used in the concentrated solar power (CSP) plants are analyzed. The experiments have been designed in order to cover a wide range of temperature up to the maximum operation temperature of 1000 °C corresponding to the future generation of CSP plants. In particular, three different fluids have been studied: synthetic oil (Syltherm 800®) at 400 °C, molten salt (Solar Salt) at 500 °C, and air at 1000 °C. In addition, a complete characterization of the studied slags and fluids used in the experiments is presented showing the behavior of these materials after 500 hr laboratory-tests.

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