涤棉织物柔软整理前后导湿透气性能变化分析

通过改变柔软剂使用量、处理温度等测试条件,测试织物整理前后导湿及透气性能的变化情况.测试结果表明:经过柔软整理后,涤棉织物的亲水性得到改善,织物的导湿性有了明显提高,芯吸高度增加,在织物中的完全渗透时间缩短.由于织物的密度、厚度及面密度在整理后有所增加,织物的透气性能略有下降.     

碳黑在阳光蓄热纸制备中的应用研究

以六偏磷酸钠为分散剂,以丁苯胶乳、聚乙烯醇（PVA）和羧甲基纤维素钠（CMC-Na）为黏合剂,将碳黑等光吸收材料涂覆于纸页表面制备阳光蓄热纸。研究结果表明：以碳黑N220为蓄热剂制备阳光蓄热纸在技术上是可行的。碳黑N220的蓄热性能介于氧化铝和碳化锆之间,碳黑N330的蓄热效果不及碳黑N220。碳黑N220与氧化铝在蓄热方面无互补效应。碳黑N220的分布均匀性对涂布纸样的蓄热效果有明显影响。     

还原氧化石墨烯涂层织物的电加热性能

为研究可穿戴织物的电加热性能以及水洗对其性能的影响,通过简单安全可大规模产业化的无转移液相浸涂沉积法在涤纶针织物上沉积并原位还原,制备了还原氧化石墨烯(RGO)涂层织物加热器。借助扫描电子显微镜和傅里叶红外光谱仪对制备的RGO涂层涤纶织物进行表观形态与化学结构分析,同时研究了RGO涂层涤纶织物的导电、力学、电加热性能。结果表明:RGO涂层涤纶织物的电导率为430.9 mS/cm,在10 V电压下可达到65.58 ℃的稳定温度,最大升温速率为3.41 ℃/s;经过2次水洗循环后,在10 V的电压下,RGO涂层涤纶织物可达到43 ℃。本文研究表明,RGO涂层涤纶织物具有优异的电热性能,在医用电热、运动康复等领域具有良好的应用潜力。     

新型4 400mm瓦楞原纸机

介绍了4 400 mm瓦楞原纸机各个部分的配置和特点。     

基于冷量阈值的整流罩空调控制策略研究

针对某航天发射场整流罩空调机组经常出现前级蒸发器结霜和送风温湿度波动问题,进行问题机理分析,结合新风与表冷后目标露点的焓值差提出了一种基于冷量阈值的压缩机PID控制方法;该方法首先根据新风和目标露点的焓值差计算出处理空气所需的实际冷量,然后将该冷量作为基于露点PID控制压缩机输出的上限值;冷量阈值的使用一方面使PID控制一直保持欠调节状态,避免了压缩机投入比的上下跳变而导致送风温湿度波动的问题;另一方面有效解决了压缩机投入冷量过多而导致的蒸发器结霜问题;实践证明,优化后的空调机组运行稳定可靠,温湿度控制精度得到有效提升,分别达到了±0.5 ℃和±3%,满足航天器产品保障需求。     

浓香型酒制曲环境空气微生物分布探讨

曲药发酵环境微生物区系对曲药微生物起决定作用。以泸州老窖曲药生产车间为研究对象,分析了各个季节空气微生物的区系变化、形成原因及采取措施等。     

间接膨胀式太阳能高温热泵系统运行性能实验研究

为研究间接膨胀式太阳能高温热泵系统实际应用的可行性和有效性,搭建实验平台,在天津地区气象条件下对高温热泵全天动态运行特性开展实验研究,分析太阳辐射强度、水箱储热性能、冷凝温度及膨胀阀开度对系统运行性能影响。结果表明:平均太阳辐射强度由396 W/m2增加到563 W/m2,高温热泵性能系数COP由3.62增至3.93;因水箱储热功能,间接膨胀式系统在太阳辐射强度剧烈波动时能够保持高温热泵相对稳定的蒸发温度;当蒸发温度固定时高温热泵COP随冷凝温度升高而降低,冷凝温度由70 ℃增至80 ℃,COP由4.32降至2.76;膨胀阀开度由150步增至250步,高温热泵全天平均COP由3.14升至5.12,排气压力降低46%。     

Great Lakes Levels and Flows: Past and Future

The many analyses of the more than 100 years’ record of Great Lakes levels and of precipitation in the basin are generally assumed to provide a reasonable basis for predicting, statistically, future lake levels. The usefulness of this assumption is questioned because of increasing consumptive use of Great Lakes waters, and probable climatic change over the next century. The International Joint Commission's 1981 report on consumptive use and diversions gives as its most likely scenario an annual growth of 2.7% in consumptive uses. By the year 2035, this would reduce Great Lakes outflows by about 708 m³ (25,000 cfs), with an estimated loss of “$200 million per year in hydro power production.” The climatic effects of the inexorable increases in atmospheric carbon dioxide (CO₂) due mainly to burning of fossil fuels are still difficult to predict. However, the best predictions available suggest that in the next 70 years or so, the mean air temperature in the Great Lakes basin will rise by approximately 3C° and may well be accompanied by slightly less precipitation. Increases in evaporation from the Great Lakes would be equivalent to 7–8% of the mean annual flow of the St. Lawrence. These two factors — increased evaporation and increased consumptive uses — suggest that significantly lower lake levels and flows of interconnecting channels and the St. Lawrence River are likely in the next century.     

制药厂空气净化器工作状态监测系统

提出了由两级微机组成的实时监测系统，该系统能完成４个主要参数的测量、显示、报警以及数据分析，并对测量仪的有关硬件和软件作了介绍