Karakterisasi Campuran LDPE dan Asam Miristat Sebagai Thermal Energy Storage

Abstrak

Global energy demand continues to increase along with population growth and industrial progress, so Thermal Energy Storage (TES) technology is needed to optimize energy efficiency. The main problems in utilizing organic Phase Change Materials (PCMs), such as myristic acid, are the risk of leakage during the liquid phase and low thermal conductivity. This study aims to characterize a mixture of Low Density Polyethylene (LDPE) and myristic acid as a shape-stabilized PCM to improve shape stability and thermal energy storage capacity. The research method involves the preparation of composite samples with varying compositions of LDPE and myristic acid (85:15, 75:25, and 65:35 wt%), followed by charging and discharging cycle testing to evaluate temperature distribution and energy storage capacity. The results show that increasing the myristic acid composition contributes to the maximum temperature increase during the charging process, with the 65% LDPE–35% myristic acid composite showing the most optimal energy storage performance. It was concluded that the composite of LDPE and myristic acid was effective as a TES medium, where LDPE played a role in maintaining the stability of the material structure so that it did not leak during the thermal cycle, so it had great potential to be developed as a PCM application.

Kata kunci

• Asam
• LDPE
• Miristat
• PCM
• Tes