新型管状泡沫镍光催化空气净化器的设计与分析.PDFVIP

4 1 5 上 海 交 通 大 学 学 报 V ol. 4 1 N o. 5 2007 5 J OU RN AL O F SH AN G HA I J IA OT O N G U N IV ERSIT Y M ay 2007 : 1006- 24 67 2007) 05- 0673- 04 杨莉萍, 刘震炎, 施建伟, 上官文峰 , 200240) : 设计了一种应用于供热通风及 调 H V A C) 系统, 能降解室内挥发性有机物 V OCs) 的 新型管状泡沫镍光催化 气净化器. 该净化器能够灵活改变迎风面积来适应不同流速的H V A C 系 统, 具有阻力低等优点. 通过室内浓度的甲醛污染物的降解实验, 考察了外部质量传递对该净化器 性能的影响, 并对其反应动力学和能量效率进行了分析. 结果表明: 甲醛的反应速率随着流速的增 加先增加而后下降, 在流速不小于0. 66 m/ s 时光催化反应不受外部质量传递的影响; 一级反应动 力学模型能够很好地描述甲醛的光催化降解过程; 与多玻璃管光催化 气净化器相比, 所提出的管 状泡沫镍光催化 气净化器的能量效率增加了138% . : 气净化器; 光催化氧化; 室内甲醛; 质量传递; 反应动力学 : X 131 : A The Design and Analysis of a Novel Tubular Foam- Nickel Photocatalytic Air Purifier YA N G L i-p ing , LI U Zhen-yan, SH I J ian-wei, SH A N GG UA N Wen-f eng School of M echanical Eng. , Shang hai Jiaot ong U niv. , Shang hai 200240, China) Abstract: A no vel t ubular f oam- nickel phot ocat alyt ic air purif ier w as pr esent ed for deg rading indoor v ola- t ile org anic compounds V O Cs) , w hich is applicable t o the heat ing, v ent ilat ing and air- co ndit ioning H V A C) syst em . T he purif ier is f lex ible enough t o adapt dif ferent H V A C syst em s w ith dif ferent air ve- l ocit ies by changing t he w indw ard area. Mo reover, t he pur if ier had low pressure drop . T he eff ect of ex t er- nal m ass transf er on t he phot ocat alyt ic perf ormance o f t he purif ier w as inv est ig ated and t he react ion kinet- ics and energ y ef ficiency w er e analyz ed by degrading gaseou s f ormaldehyde at an indoor co ncent rat io n lev- el. T he ex periment al results show t hat t he re