Characterization of granular phase change materials for thermal energy storage applications in fluidized beds
Fecha de publicación2016
Izquierdo Barrientos, M. A.
Almendros Ibáñez, J. A.
MetadatosMostrar el registro completo del ítem
This work investigates commercially available granular phase change materials (PCMs) with different transition temperatures for the use of thermal-energy storage systems in fluidized beds. The hydrodynamic characteristics of granular PCMs were tested in cylindrical-3D and planar-2D fluidized beds. The
density, particle size distribution and angle of repose were measured for various PCM materials. Further attrition studies were conducted with changes in particle surface from abrasion, which were characterized using a Scanning Electron Microscope (SEM). The results indicate that some materials with smaller particle size and thinner supporting structure can lose the paraffin during the fluidization process, when paraffin is in a liquid state. As a consequence, the particles agglomerate, and the bed defluidizes. For all of the tested materials, only GR50 (with a transition temperature of 50 °C) properly fluidizes when the paraffin is in the liquid state and has shown to endure >75 h of continuous operation and 15 melting-solidification cycles in a fluidized bed. Additional differential scanning calorimetry (DSC) measurements of the cycled particles did not show a decrease in energy storage capacity of the granular PCM, which corroborates that there is no loss of material after >75 h of fluidization.
Es parte deApplied Energy, 2016, vol. 181, p. 310-321
Excepto si se señala otra cosa, la licencia del ítem se describe comocc-by-nc-nd, (c) Elsevier, 2016
Showing items related by title, author, creator and subject.
Palacios, Anabel; Gracia Cuesta, Alvaro de; Cabeza, Luisa F.; Julià Bolivar, José Enrique; Fernández Renna, Ana Inés; Barreneche Güerisoli, Camila (Elsevier, 2018)The main drawbacks faced by researchers to successfully implement organic-PCM as materials to improve the thermal performance of building systems are their low thermal conductivity, their high flammability, and their low ...
Barreneche Güerisoli, Camila; Navarro, Maria E.; Cabeza, Luisa F.; Fernández Renna, Ana Inés (Elsevier, 2015)Today, thermal energy storage materials are proposed as a promising solution to increase the energy efficiency in building sector and to reduce the total energy demand because building sector accounts up to 34% of total ...
Navarro Farré, Lidia; Solé, Aran; Martín, Marc; Barreneche Güerisoli, Camila; Olivieri, Lorenzo; Tenorio, José Antonio; Cabeza, Luisa F. (Elsevier, 2018)Nowadays, there is an increasing interest in more efficient building materials and new technologies to accomplish the objectives defined by energy policies. The combination of energy efficient building designs and integration ...