Experimental measurements and numerical computation of nanofluid and microencapsulated phase change material in porous material

Abstract

Summary The electronic industry is increasingly investigating different approaches for the cooling of electronic equipment. The use of bulk phase change materials is also a promising approach for energy storage. The introduction of microencapsulated phase change materials combined with nanofluids can be beneficial. The combined use of a nanofluid and a metallic porous material can be used to mitigate problems resulting from small thermal conductivity. This study investigated a ternary mixture of water with a nanofluid and a microencapsulated phase change material in a porous medium. The model was previously validated with experimental data using a 0.5%vol concentration nanofluid in water. The results revealed that heat storage capability can be achieved as long as the microencapsulated phase change materials, which consists of encapsulated eicosane, is at a concentration of 20%. Because the melting temperature of microencapsulated phase change materials is approximately 36°C, energy storage at a low flow rate and heat flux is recommended.

Lignin‐retaining porous bamboo‐based reversible thermochromic phase change energy storage composite material

“…A new type of nano‐structured calcium silicate (NCS) has also been developed as a framework material to obtain NCS‐based phase change composites to provide effective heat storage and release . Metal foams, graphene aerogels, porous minerals, expanded graphite, diatomite, metallic porous material and mesoporous silica have also been developed as framework materials for assembling composite phase change materials . Through the analysis of published literatures, synthetic polymers and porous materials with different structures have been used as framework materials to obtain shape‐stable PCMs, while few studies have used natural biomass materials as framework materials.…”

Conduction paths of backbones for thermal enhancement of nanocomposite phase change materials

“…[9][10][11][12] Methods for LHS performance enhancement include extending heat transfer surface, [13][14][15][16][17][18][19] improving process uniformity 7,20 and enhancing PCM conductivity. [9][10][11][12] Methods for LHS performance enhancement include extending heat transfer surface, [13][14][15][16][17][18][19] improving process uniformity 7,20 and enhancing PCM conductivity.…”

“…[9][10][11][12] Methods for LHS performance enhancement include extending heat transfer surface, [13][14][15][16][17][18][19] improving process uniformity 7,20 and enhancing PCM conductivity. [15][16][17] Saghir and Bayomy 18 investigated a ternary mixture of water with a nanofluid and a microencapsulated PCM in a porous medium. Their results indicated a limited improvement of the thermal performance.…”

“…In order to improve the performance of latent heat storage systems, researchers have conducted a large number of studies. [9][10][11][12] Methods for LHS performance enhancement include extending heat transfer surface, [13][14][15][16][17][18][19] improving process uniformity 7,20 and enhancing PCM conductivity. [21][22][23][24][25][26][27][28][29] Lohrasbi et al 13 and Kabbara et al 14 used axially fins and radially fins, respectively, to extend the heat transfer surface area.…”

“…Encapsulated PCM had been proposed as one possible substitute for further improving the thermal performance of energy storage systems. [15][16][17] Saghir and Bayomy 18 investigated a ternary mixture of water with a nanofluid and a microencapsulated PCM in a porous medium. It was reported that the maximum heat storage capability can be achieved at a concentration of 20% for the microencapsulated PCMs.…”