Characterization of CaO-CaF2-TiO2-SiO2 Based Welding Slags for Physicochemical and Thermophysical Properties

Silicon ◽  
2020 ◽  
Author(s):  
Waris Nawaz Khan ◽  
Rahul Chhibber
Keyword(s):  
Thermophysical Properties

scholarly journals Experimental Characterization of Phase Change Materials for Refrigeration Processes

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3033
Author(s):  
Anastasia Stamatiou ◽  
Lukas Müller ◽  
Roger Zimmermann ◽  
Jamie Hillis ◽  
David Oliver ◽  
...  
Keyword(s):  
Energy Density ◽  
Phase Change ◽  
Thermophysical Properties ◽  
Phase Change Materials ◽  
Cost Effective ◽  
Latent Heat Storage ◽  
Lower Energy Density ◽  
Change Material ◽  
Storage Units

Latent heat storage units for refrigeration processes are promising as alternatives to water/glycol-based storage due to their significantly higher energy densities, which would lead to more compact and potentially more cost-effective storages. In this study, important thermophysical properties of five phase change material (PCM) candidates are determined in the temperature range between −22 and −35 °C and their compatibility with relevant metals and polymers is investigated. The goal is to complement existing scattered information in literature and to apply a consistent testing methodology to all PCMs, to enable a more reliable comparison between them. More specifically, the enthalpy of fusion, melting point, density, compatibility with aluminum, copper, polyethylene (PE), polypropylene (PP), neoprene and butyl rubber, are experimentally determined for 1-heptanol, n-decane, propionic acid, NaCl/water mixtures, and Al(NO3)3/water mixtures. The results of the investigations reveal individual strengths and weaknesses of the five candidates. Further, 23.3 wt.% NaCl in water stands out for its very high volumetric energy density and n-decane follows with a lower energy density but better compatibility with surrounding materials and supercooling performance. The importance of using consistent methodologies to determine thermophysical properties when the goal is to compare PCM performance is highlighted.

Characterization of rheological and thermophysical properties of HDPE-wood composite

2014 ◽  
Vol 131 (13) ◽  
pp. n/a-n/a ◽  
Author(s):  
Mosfafa Tazi ◽  
Fouad Erchiqui ◽  
François Godard ◽  
Hamid Kaddami ◽  
Abdellah Ajji
Keyword(s):  
Thermophysical Properties ◽  
Wood Composite

THERMOPHYSICAL PROPERTIES CHARACTERIZATION OF MoS2/H2O-EG FOR HEAT TRANSFER APPLICATIONS

2021 ◽  
Author(s):  
Felipe Silva dos Santos ◽  
Edwin Martin Cardenas Contreras ◽  
ENIO BANDARRA FILHO
Keyword(s):  
Heat Transfer ◽  
Thermophysical Properties ◽  
Properties Characterization

Investigation and characterization of crystal structure, mechanical and thermophysical properties of CaZr4-xTixP6O24 ceramics

2019 ◽  
Vol 45 (8) ◽  
pp. 10596-10602 ◽  
Author(s):  
Yang Wang ◽  
Yuanyuan Zhou ◽  
Zhuoqun Han ◽  
Futian Liu
Keyword(s):  
Crystal Structure ◽  
Thermophysical Properties

scholarly journals Characterization of Thermophysical Properties of Phase Change Materials Using Unconventional Experimental Technologies

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4687
Author(s):  
Arnold Martínez ◽  
Mauricio Carmona ◽  
Cristóbal Cortés ◽  
Inmaculada Arauzo
Keyword(s):  
Thermal Properties ◽  
Phase Change ◽  
Thermophysical Properties ◽  
Phase Change Materials ◽  
Small Sample ◽  
Alternative Methods ◽  
Accurate Estimation ◽  
Inhomogeneous Materials ◽  
Scanning Calorimetry

The growing interest in developing applications for the storage of thermal energy (TES) is highly linked to the knowledge of the properties of the materials that will be used for that purpose. Likewise, the validity of representing processes through numerical simulations will depend on the accuracy of the thermal properties of the materials. The most relevant properties in the characterization of phase change materials (PCM) are the phase change enthalpy, thermal conductivity, heat capacity and density. Differential scanning calorimetry (DSC) is the most widely used technique for determining thermophysical properties. However, several unconventional methods have been proposed in the literature, mainly due to overcome the limitations of DSC, namely, the small sample required which is unsuitable for studying inhomogeneous materials. This paper presents the characterization of two commercial paraffins commonly used in TES applications, using methods such as T-history and T-melting, which were selected due to their simplicity, high reproducibility, and low cost of implementation. In order to evaluate the reliability of the methods, values calculated with the proposed alternative methods are compared with the results obtained by DSC measurements and with the manufacturer’s technical datasheet. Results obtained show that these non-conventional techniques can be used for the accurate estimation of selected thermal properties. A detailed discussion of the advantage and disadvantage of each method is given.

scholarly journals Photothermal and thermography techniques applied in the characterization of the thermophysical properties of solar absorbers: A review

2019 ◽  
Author(s):  
Juan Daniel Macías ◽  
José Bante Guerra ◽  
Hernando Romero Paredes ◽  
Camilo Alberto Arancibia Bulnes ◽  
Heidi Isabel Villafán Vidales ◽  
...  
Keyword(s):  
Thermophysical Properties ◽  
Solar Absorbers
Sign in / Sign up

Export Citation Format

Share Document