Isopropyl palmitate integrated with plasterboard for low temperature latent heat thermal energy storage

Abstract

Summary In recent years, the latent heat thermal energy storage using phase change materials (PCMs) has become a hot topic; it has attracted much attention in the utilization of renewable energy sources to improve the energy efficiency of buildings. Isopropyl palmitate (ISOP) with phase transition temperature of 10°C to 13°C and heat of fusion of ~113 J/g was selected to be used as a PCM in building applications. ISOP, 15%, was mixed with plasterboard (PB) as a building material in two techniques, immersion and direct incorporation, in order to retain the ISOP into the porous structure of PB. Scanning electron microscope (SEM) demonstrated that the layer structure of the PB particles was uniformly absorbed by ISOP. Phase transition temperature of ISOP in both techniques determined using differential scanning calorimeter (DSC) is still similar to that of ISOP accompanied with much reduction in the latent heat, particularly in the direct incorporation technique. TCA 300 thermal conductivity analyzer addressed that the thermal conductivity of the PB has been slightly increased with the addition of ISOP. The stored thermal energy performance in a small test room is experimentally investigated. These results indicated that applying ISOP to the south wall of the testing room had the potential to reduce the fluctuation of the indoor air temperature. The effect of ISOP on the mechanical properties of PB has been investigated in the flexural mode using three‐point bending test. Moreover, the fire risk of ISOP has been assessed using cone calorimetric. The results confirmed that the novel composite ISOP has a significant opportunity in building applications for thermal energy storage.

Graphene Nanoplatelets Dispersed In Isopropyl Palmitate for the Improvement of Cold Storage Applications

“…Isopropyl palmitate, an ester of isopropyl alcohol and palmitic acid, is an interesting proposal among the PCMs and is considered an eco-friendly material. Its phase transition temperature lies between 283 K and 286 K and the heat of fusion is ~113 J/g [5], so it is adequate to be used as a PCM in thermal energy storage applications.…”

Thermal and Flammability Properties of Flame Retardant Phase Change Material for Buildings Applications

“…The burning of PCMs can produce enormous amounts of smoke, flame, and hazardous fumes, which can be easily transmitted through the building, resulting in deaths, injuries, and property losses as Alkhazaleh et al reported in literature [12,13]. The flammability of organic PCM is regarded as the most serious hazard to its application in structures [14,15]. Previous research has shown that physically combining PCMs with flame retardants, such as intumescent flame retardants [16], magnesium hydroxide [17], and montmorillonite [18], can greatly improve their fire-retardant capabilities.…”