Phase change materials are great thermal energy storage medium, while their low thermal conductivity presents the main obstacle for their potential applications. Improvement of the thermal conductivity and specific heat of Sodium Thiosulfate Pentahydrate as a base phase change material with joining Carbon Nano tubes CNT and Graphite Nano particles GNP as Nano-fillers was investigated in this work. CNT and GNP Nano-fillers added in a mass fraction of 1, 3, 5 and 7% in Sodium Thiosulfate Pentahydrate. Thermal conductivity and specific heat were measured by Hot Disk Thermal Constants Analyzer Instrument. Results have shown that increasing the mass fraction of Nano-fillers increases the composite's thermal conductivity. Thermal conductivity of the composite containing: 7% GNP was 2.944 W/m.k with 155.33% enhancement, in the other hand, thermal conductivity of the composite containing: 7% CNT was 4.031 W/m.k with 249.61% enhancement. Moreover, the charging/discharging rates have been enhanced by adding Nano-fillers to Sodium Thiosulfate Pentahydrate.

相变材料是很好的热能存储介质，而其低热导率则成为其潜在应用的主要障碍。通过结合碳纳米管CNT和石墨纳米颗粒GNP作为纳米填料，研究了五水硫代硫酸钠作为基础相变材料的导热性和比热的提高。在五水合硫代硫酸钠中以1、3、5和7％的质量分数添加了CNT和GNP纳米填料。用热盘热常数分析仪测量热导率和比热。结果表明，增加纳米填料的质量分数可以提高复合材料的导热性。含有7％GNP的复合材料的导热系数为2.944 W / mk，提高了155.33％，包含：7％CNT的复合材料的热导率为4.031 W / mk，增强了249.61％。此外，通过在五水合硫代硫酸钠中添加纳米填料，提高了充电/放电速率。