基于海绵状活性炭的吸附蓄热耦合系统对室内空气净化的特性

Characterization of Spongy Activated Carbon-based Adsorption-thermal Storage Coupled System for Indoor Air Purification

本文利用聚乙烯醇和甲醛在酸性条件下的缩醛化反应特性,将活性炭粉末固定在反应形成的三维网格结构上,制成1种孔隙结构丰富、吸水性好、易清洗的海绵状活性炭材料。将其用于基于装配式建筑的吸附蓄热耦合的室内净化系统,结合低能耗和近零能耗建筑设计要求,可在零能耗条件下完成净化空气和蓄热。本文分析了该净化系统在多种工况下对PM_(2.5)和PM_(10)的净化效果。研究结果表明,在被动通风工况下,系统对PM_(2.5)和PM_(10)的净化效率最高为43.2%和42.4%,在主动通风工况下,系统对PM_(2.5)和PM_(10)的净化效率最高为92.4%和94%,对比未经处理的活性炭蓄热耦合系统高约4%~6%,可在短时间内更高效净化室内颗粒物,且该系统模块材料便于清洗和再生。

This paper utilized the acetalization reaction characteristics of polyvinyl alcohol and formaldehyde under acidic conditions to fix activated carbon powder on the three-dimensional grid structure formed by the reaction,and produced a sponge like activated carbon material with rich pore structure,good water absorption,and easy cleaning.By using it in an indoor purification system based on adsorption-thermal storage coupling in assembled buildings,and based on low-energy and near-zero-energy building design requirements,air purification and thermal storage can be accomplished under zero-energy conditions.This paper analyzed the purification effect of the purification system on PM_(2.5)and PM_(10)under various operating conditions.The results show that under passive ventilation conditions,the purification efficiency of the system for PM_(2.5)and PM_(10)reaches the highest at 43.2%and 42.4%,while under active ventilation conditions,it reaches the highest at 92.4%and 94%,about 4%~6%higher than the untreated activated carbon thermal storage coupling system.It can purify indoor particles more efficiently in a short period of time.Moreover,the module materials of the system are easy to clean and regenerate.