【摘要】 对NaOH/KOH二元体系蓄热性能进行实验研究 ,分析了相变材料 (PCM )的熔解和凝固等现象 ,获得了二元体系组成对相变点的影响曲线图 ,计算了PCM的固 -固相变潜热和分别处于液相、混相和固相状态时的导热系数 .实验表明 ,二元体系的相变包括固 -液相变和固 -固相变 ,这两部分的相变潜热值较大 ;相变过程中会有空穴的产生和不凝气体的存在 ;NaOH/KOH二元体系导热系数的实验值小于理论值 ,这在实际工程中应加以考虑 .更多还原

【Abstract】 The performance of energy saving is studied for a NaOH/KOHbinary system. The phenomena of liquate and solidification are analyzed for the phase-change materials(PCM),and a phase diagram of the binary system is obtained. The latent heat of solid-solid phase change and thermal conductivities of solid,liquid and phase change state are calculated repectively for the PCM. It is found that the binary system phase change includes solid-liquid phase change and solid-solid phase change,where there is greater amount of latent heat. The experimental value of thermal conductivity is less than the analytial value.更多还原