为了提高碳酸氢铵-反向电渗析模块的产电性能,对其构型进行了优化,并分析了其能量效率的变化特点.结果表明,当碳酸氢铵-反向电渗析模块采用5对离子交换膜及0.2 mm厚的隔板时,其功率密度可达最大值0.85 W/m2(不计电极系统能量损耗).膜对数量不超过8时,开路电压、内阻及最大功率密度均随膜对数的增加而逐渐升高,且膜对数与开路电压、内阻均呈现出良好的线性关系;膜对数量大于8时,装置产电性能逐渐变差.对于相同种类的隔板,采用较薄的隔板能减小装置的内阻,其产电性能更好;对于同等厚度的隔板,编织结构紧密的隔板更优.实验中装置能量效率稳定于30％左右,表明其在能量利用方面具有一定优势.
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