低海拔地区纺织空调的节能探索

在新疆吐鲁番低海拔地区纺织厂空调系统调节过程中，根据室外干湿球温度变化差异，分析了室外空气与车间回风的焓差变化，大量使用新风，降低空调冷负荷，实现充分利用自然能源，从而达到节能的目的。并总结出不改变制冷机工况实现大温差小水量的简单方法。     

清洁生产与纺织空气工程

系统地介绍了清洁生产的原理、主要内容及实施清洁生产的主要途径，并结合纺织空气工程论述了在纺织厂推行纺织品清洁生产的意义，提出了具体的实施措施。     

我国纺织空调系统的改造和发展

论述了我国纺织厂多年来在调室设备更新换代、纺织空调冷源多元化,生产车间气流组织和纺织厂能源的合理利用及节能等方面取得的技术进步,叙述了我国纺织厂空调由无到有、由简单到完善的发展历程。     

压缩空气带水问题的分析与处理

纺织工业中需要一定压力的压缩空气作为动力源,但空气压缩到一定压力以后,会有大量的水析出,造成压缩空气带水,给日常生产带来很大的问题,采用对压缩空气二次降温的方法,即将压缩空气储气罐出口的温度降到车间环境温度以下,使压缩空气从储气罐到生产车间形成自然升温过程,而饱和的压缩空气将变成未饱和压缩空气,不再有水分析出,从根本上解决了压缩空气带水问题。     

Estimation of thermal diffusivity of foods using transfer functions

The effective thermal diffusivity of foodstuffs was estimated from time-temperature histories in the geometric center of samples exposed to heating and cooling processes.Transfer functions methodology was used as an alternative method to estimate the thermal diffusivity assuming that conduction was the main heat transfer mechanism. The samples were characterized as delayed first-order systems with unit gain, dead time (L) and time constant (τ).The results were compared with those obtained from the f_h value and with results reported in the literature.     

基于CFD的新型加香加料机布风系统的设计及改进

在新型烟草加香加料设备研制过程中,为解决多管送风导致孔板布风不均的问题,采用计算流体力学(Computational Fluid Dynamics,CFD)软件Fluent对原设计结构中的流场进行了仿真研究.仿真结果表明,布风室内气流合流产生的漩涡和筒内不良气泡特性的产生是导致布风不均的主要原因,对此提出了加装隔板分割布风室、对各布风室独立送风的改进措施.试验数据表明,改进后布风室两侧进风管道的风速差由2.1,1.5,14 m/s降低到0.5,1.3,1.0 m/s,阻止了布风室内涡流和加香加料筒内不良气泡特性的产生,改善了筒内气固两相混合的均匀性和规律性.     

JAT600A型喷气织机纬停原因分析与处理

从气路的工艺设定、筒子架及储纬器的设置、左侧边剪的设定、探纬器的设置、开口部分机械部件及工艺设计等几个方面,对JAT600A型喷气织机的纬停原因进行了具体分析,并提出了防治措施,认为保证纱线质量、优化织造工艺、完善设备管理,可有效控制纬停.     

Shrinkage, density, porosity and shape changes during dehydration of pumpkin (Cucurbita pepo L.) fruits

The aim of this work was to study the changes in volume, density, porosity and shape factors of pumpkin tissue during osmotic dehydration (OD) and air drying (AD). Pumpkin cylinders with length/diameter ratio of 5/3 were used. OD experiments were carried out with solutions of sucrose, sodium chloride and mixtures of both solutes at different temperatures. AD experiments were conducted at 70 °C. Volume of samples decreased linearly with weight reduction (WR). Bulk density varied in a restricted range (5-13%) during dehydration and for all the methods maximum values were found. Particle density increased during both processes. Porosity increased at advanced degrees of dehydration, showing a minimum value at the beginning of OD and AD. The proposed models to evaluate shrinkage, bulk and particle densities and porosity from WR were satisfactorily applied. Image analysis showed that shrinkage of samples during OD was isotropic. Pumpkin cylinders increased elongation and decreased roundness and compactness during osmotic dehydration.     

喷气织机两种纬向疵点分析

探讨喷气织机上纬缩和断双纬疵点的产生原因及解决措施。分析了纬缩和断双纬疵点的形成原因,认为纬缩疵点的形成主要与引纬系统、引纬工艺参数设置、纬纱质量和压缩空气压力有关,从纬向系统、经向系统、生产环境三方面采取相应技术措施即可解决纬缩疵点问题;断双纬疵点的形成主要是由于纬纱从储纬器中脱出,通过调整供纱侧剪刀状态和剪切时间,更换挡纬销,调整辅助主喷嘴位置等措施即可解决断双纬问题。     

化学镀银织物电磁屏蔽效能及透湿透气性能研究

为研究化学镀银对织物性能的影响,采用葡萄糖作还原剂对涤纶织物进行镀银,借助扫描电镜、网络分析仪、织物透湿仪、织物透气量仪等,对镀银织物的表面镀层形貌、织物的电磁屏蔽效能,以及织物的透湿、透气性能进行测试分析。结果表明:随着增重率的变大,织物的屏蔽效能增加,当增重率达到37%时,电磁屏蔽效能增加不明显,故应根据需要合理选择面料的镀层厚度;研究还发现镀层厚度对织物的透湿、透气性有影响。