【摘要】：室內(nèi)空氣濕度的控制對(duì)人們工作生活的舒適性、物品保存以及工業(yè)生產(chǎn)過程都扮演著十分重要的角色。本文將膜除濕技術(shù)和固體吸附除濕技術(shù)結(jié)合,制作一種新型的有機(jī)-無機(jī)復(fù)合型除濕材料。具體方法是將玻璃纖維紙和自制硅膠材料作為基材,利用含有膜組分PAAS(聚丙烯酸鈉)或PVA(聚乙烯醇)的溶液進(jìn)行改性處理,再經(jīng)過干燥、成型處理,得到復(fù)合除濕材料。實(shí)驗(yàn)過程中對(duì)PAAS和PVA濃度及其他添加劑比例進(jìn)行分析,測(cè)試了不同濃度比例所得到的復(fù)合材料的吸濕性能,結(jié)果顯示,PAAS和PVA改性對(duì)提高材料的吸濕量都有積極效果,而由硅膠經(jīng)PVA和氯化鋰的混合溶液改性得到的復(fù)合材料有最佳的綜合性能。按性能最優(yōu)的實(shí)驗(yàn)配方自主制備蜂窩型硅膠除濕轉(zhuǎn)輪,并對(duì)其進(jìn)行一系列的試驗(yàn)分析,包括吸脫附性能分析、孔結(jié)構(gòu)分析、水蒸氣吸附量分析、耐高溫性分析。還將自制的轉(zhuǎn)輪樣品與購置的商品轉(zhuǎn)輪樣品進(jìn)行了吸濕量的實(shí)驗(yàn)對(duì)比,結(jié)果顯示,自制轉(zhuǎn)輪樣品在90%相對(duì)濕度下的最大吸濕量為0.495 g/g,遠(yuǎn)高于商品轉(zhuǎn)輪的最大吸濕量0.187 g/g,顯示出優(yōu)異的吸濕性能。另外,通過自主搭建試驗(yàn)臺(tái)模擬不同的運(yùn)行工況,對(duì)轉(zhuǎn)輪材料進(jìn)行動(dòng)態(tài)的除濕和再生實(shí)驗(yàn)分析,考察除濕轉(zhuǎn)輪在不同濕度、再生溫度下的性能表現(xiàn)。結(jié)果顯示,除濕效率和SDP(單位除濕量)這兩個(gè)性能指標(biāo)均隨濕度的增加和再生溫度的增加而呈線性增長(zhǎng)的趨勢(shì),DCOP(除濕性能系數(shù))作為考量除濕過程和再生過程平衡的性能指標(biāo),分析顯示當(dāng)室溫下處理空氣相對(duì)濕度大于80%時(shí),以60℃作為再生溫度所得到的DCOP值為0.8~1。此時(shí)轉(zhuǎn)輪達(dá)到較好的除濕/再生平衡,在應(yīng)用中能有最佳的除濕性能表現(xiàn)。
[Abstract]:The control of indoor air humidity plays a very important role in the comfort of people's work and life, the preservation of goods and the industrial production process. In this paper, a new kind of organic-inorganic composite dehumidification material was prepared by combining membrane dehumidification technology with solid adsorption dehumidification technology. The specific method is that glass fiber paper and self-made silica gel are used as the base material and the solution containing PAAS (sodium polyacrylate) or PVA (polyvinyl alcohol) is used to modify the composite dehumidification material. After drying and molding the composite dehumidification material is obtained. In the course of experiment, the concentration of PAAS and PVA and the proportion of other additives were analyzed, and the hygroscopicity of the composites with different concentration ratios was tested. The results showed that the modification of PaaS and PVA had positive effects on increasing the moisture absorption of the composites. The composite modified by the mixed solution of PVA and lithium chloride has the best comprehensive properties. The honeycomb silica gel desiccant runner was prepared independently according to the optimum experimental formula. A series of experiments were carried out, including the analysis of desorption performance, pore structure analysis, water vapor adsorption capacity analysis and high temperature resistance analysis. The moisture absorption of the self-made runner sample was compared with that of the commercial runner sample, and the results showed that, The maximum moisture absorption of self-made runner at 90% relative humidity is 0.495 g / g, which is much higher than that of commercial runner (0.187 g / g). In addition, the dynamic dehumidification and regeneration experiments were carried out to investigate the performance of the desiccant runner under different humidity and regeneration temperature by building a test rig to simulate different operating conditions. The results show that the dehumidification efficiency and SDP (unit dehumidification rate) are both linearly increasing with the increase of humidity and regeneration temperature. The analysis shows that when the relative humidity of the air treated at room temperature is greater than 80, the DCOP value obtained by using 60 鈩，

本文編號(hào)：2251276