In the present work, adsorption performances of an innovative composite adsorber, based on SAPO-34-silicone composite macro-cellular foams, are reported. The choice of a foamed structure was assessed to improve the water vapor access towards the embedded zeolite keeping good adsorption heat pump dynamic performance. Depending on zeolite amount used as filler, zeolite/silicone foams evidenced a soft and open cell configuration (low zeolite content) or rigid and closed one (high zeolite content). Morphological analysis evidenced that the cellular structure of the foam is homogeneous and well distributed along the foam cross section. Adsorption tests showed that the adsorbent foamed samples have very effective adsorption capabilities indicating that the porous structure of the filled pure zeolite was not obstructed. SAPO-34 filler contributed actively, with an efficiency above 90%, to the adsorption performances of the composite foam. Starting from experimental equilibrium data, a simple thermodynamic analysis based on energy balances was carried out for air conditioning application. Results of the analysis demonstrated that foam technology can guarantee cooling COP up to 7% higher than that estimated for the typical adsorber solution based on loose adsorbent grains inside an aluminum finned-flat tube heat exchanger, which is very promising for practical application in adsorption heat pumps.

中文翻译：

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吸附热泵应用中SAPO-34硅酮复合泡沫的吸附性能和热力学分析

在目前的工作中，已报道了基于SAPO-34-硅氧烷复合大孔泡沫的新型复合吸附器的吸附性能。评估了泡沫结构的选择，以改善进入嵌入式沸石的水蒸气的通行性，同时保持良好的吸附热泵动态性能。取决于用作填充剂的沸石的量，沸石/硅氧烷泡沫表现出软的和开孔的构型（低沸石含量）或刚性和闭孔的构型（高沸石含量）。形态分析表明，泡沫的孔结构是均匀的，并且沿泡沫的横截面分布均匀。吸附测试表明，泡沫吸附剂样品具有非常有效的吸附能力，表明填充的纯沸石的多孔结构未受阻。SAPO-34填料以90％以上的效率对复合泡沫的吸附性能做出了积极贡献。从实验平衡数据开始，基于能量平衡的简单热力学分析在空调应用中进行。分析结果表明，泡沫技术可确保冷却COP比基于铝制翅片式扁平管式换热器内部松散的吸附剂颗粒的典型吸附剂溶液估计的COP高出7％，这对于在吸附热中的实际应用非常有希望泵。