Name: fabric moisture uniform control to study the influence of air impingement parameters on fabric drying characteristics
Uploaded: 2019-08-19T14:00:00
Description: Watch this Scientific Journal Video about Fabric Moisture Uniform Control to Study the Influence of Air Impingement Parameters on Fabric Drying Characteristics at JoVE.com

这项工作得到了国家自然科学基金委员会-浙江省工业化与信息化一体化联合基金（赠款号U1609205）和国家自然科学基金（赠款号51605443）的支持，浙江省（助学金号2018C01027）、浙江科技大学521人才工程、浙江省机械工程重点学科青年研究员基金会（助学金）编号 ZSTUME02B13）。

1. 实验钻机设置
注：参见图1。
<ol><li>热风机单元
	<ol>
<li>确保热风机通过耐高温硅胶管道连接到空气喷嘴，该管道采用石棉材料进行热绝缘。逐渐将空气喷嘴调整到理想的倾斜角度，以控制气流方向。对于这项工作，倾斜角度，α，在60°和90°之间变化。 </li>
		<li>打开鼓风机风扇和电阻线。 注： 风扇和电阻导线的打开顺序无法反...

<ol>
	<li>Wang, G., Deng, Y., Xu, X. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Optimization+of+air+jet+impingement+drying+of+okara+using+response+surface+methodology.">Optimization of air jet impingement drying of okara using response surface methodology.</a> Food Control. 59, 743-749 (2016).</li><li>Etemoglu, A. B., Ulcay, Y., Can, M., Avci, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mathematical+modelling+of+combined+diffusion+of+heat+and+mass+transfer+through+fabrics.">Mathematical modelling of combined diffusion of heat and mass transfer through fabrics.</a> Fibers and Polymers. 10 (2), 252-259 (2009).</li><li>Di, M. P., Frigo, S., Gabbrielli, R., Pecchia, S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mathematical+modelling+and+energy+performance+assessment+of+air+impingement+drying+systems+for+the+production+of+tissue+paper.">Mathematical modelling and energy performance assessment of air impingement drying systems for the production of tissue paper.</a> Energy. 114 (2), 201-213 (2016).</li><li>Xiao, H. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Drying+kinetics+and+quality+of+Monukka+seedless+grapes+dried+in+an+air-impingement+jet+dryer.">Drying kinetics and quality of Monukka seedless grapes dried in an air-impingement jet dryer.</a> Biosystems Engineering. 105 (2), 233-240 (2010).</li><li>Gu, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Study+on+optimum+temperature+value+setting+for+the+heat-setting+process+based+on+PSO.">Study on optimum temperature value setting for the heat-setting process based on PSO.</a> 3rd International Conference on Advances in Energy, Environment and Chemical Engineering. 69, (2017).</li><li>Aihua, M., Yi, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Numerical+heat+transfer+coupled+with+multidimensional+liquid+moisture+diffusion+in+porous+textiles+with+a+measurable-parameterized+model.">Numerical heat transfer coupled with multidimensional liquid moisture diffusion in porous textiles with a measurable-parameterized model.</a> Numerical Heat Transfer Part A - Applications. 56 (3), 246-268 (2009).</li><li>Angelova, R. A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Heat+and+mass+transfer+through+outerwear+clothing+for+protection+from+cold:+influence+of+geometrical,+structural+and+mass+characteristics+of+the+textile+layers.">Heat and mass transfer through outerwear clothing for protection from cold: influence of geometrical, structural and mass characteristics of the textile layers.</a> Textile Research Journal. 87 (9), 1060-1070 (2017).</li><li>Wei, Y., Hua, J., Ding, X. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+mathematical+model+for+simulating+heat+and+moisture+transfer+within+porous+cotton+fabric+drying+inside+the+domestic+air-vented+drum+dryer.">A mathematical model for simulating heat and moisture transfer within porous cotton fabric drying inside the domestic air-vented drum dryer.</a> The Journal of The Textile Institute. 108 (6), 1074-1084 (2016).</li><li>Cay, A., Gurlek, G., Oglakcioglu, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Analysis+and+modeling+of+drying+behavior+of+knitted+textile+materials.">Analysis and modeling of drying behavior of knitted textile materials.</a> Drying Technology. 35 (4), 509-521 (2017).</li><li>Neves, S. F., Campos, J. B. L. M., Mayor, T. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=On+the+determination+of+parameters+required+for+numerical+studies+of+heat+and+mass+transfer+through+textiles+-+Methodologies+and+experimental+procedures.">On the determination of parameters required for numerical studies of heat and mass transfer through textiles - Methodologies and experimental procedures.</a> International Journal of Heat and Mass Transfer. 81, 272-282 (2015).</li><li>Sousa, L. H. C. D., Motta Lima, O. C., Pereira, N. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Analysis+of+drying+kinetics+and+moisture+distribution+in+convective+textile+fabric+drying.">Analysis of drying kinetics and moisture distribution in convective textile fabric drying.</a> Drying Technology. 24 (4), 485-497 (2006).</li><li>Wang, X., Li, W., Xu, W., Wang, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Study+on+the+Surface+Temperature+of+Fabric+in+the+Process+of+Dynamic+Moisture+Liberation.">Study on the Surface Temperature of Fabric in the Process of Dynamic Moisture Liberation.</a> Fibers and Polymers. 15 (11), 2437-2440 (2014).</li><li>Qian, M., Wang, J. H., Xiang, Z., Zhao, Z. W., Hu, X. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Heat+and+moisture+transfer+performance+of+thin+cotton+fabric+under+impingement+drying.">Heat and moisture transfer performance of thin cotton fabric under impingement drying.</a> Textile Research Journal. , (2018).</li><li>Rafael, C. G., Richard, E. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=.">.</a> Digital image processing. , (2007).</li></ol>

本节提供了确保可靠的定量结果所需的一些提示。首先，织物试样必须保持完全干燥，以确保初始重量正确。这是可以通过干燥过程（即，使用合适的干燥炉）实现的。如果可能的话，保持恒定的环境湿度有利于实验。
其次，织物试样必须经过精心加工，以确保织物每个区域的水分均匀。这可以通过使用统一垫片或类似过程手动处理来完成。操作统一垫片的关键是确保提供?...

浸其中干燥是一种非常有效的干燥方法，具有高热能、质传递系数和短干燥时间。它因应用众多而备受关注，包括化工、食品1、纺织、印染2、造纸3、4等。现在，浸其中干燥被广泛用于增强其运输特性，特别是在加热过程中对纺织品的干燥。
织物被喷嘴阵列冲击干燥，用于热设置。喷嘴布局影响干燥温度的均匀性，对织物性能、干燥效率、织物表面有直接影响。因此，有必要了解纺织表面的温度分布，以设计更好的喷嘴阵列。目前，该领域的研究很少，但迄今为止对织物干燥过程的热和水分传递性能的研究还很多。一些研究主要集中在纺织品在指定热源下的自然蒸发，其中冲击干燥过程没有参与这些研究6，7。一些侧重于热风干燥纺织品的热和水分传递，但纺织品的水分和温度在这些研究中假设是均匀的，在这些研究中8，9，10，11。此外，其中一些研究试图获得温度分布变化，随着时间的推移，研究纺织品在冲击干燥下的热量和水分转移。
Etemoglu等人2开发了一种实验装置，用于获取织物时间和总干燥时间的温度变化，但这一设置仅限于单点温度测量。在这类研究中，织物中最初的水分含量分布也被忽视。Wang等人打算通过在纺织表面不同点粘贴热电偶来获取织物的温度分布，但用它们的方法无法准确获得表面温度分布。在均匀湿度分布的织物上，在空气冲击区获得温度分布对于工业印染生产非常重要，它将为物体的分配和排列策略提供更好的指导用多喷嘴13干燥。以下过程提供了在冲击干燥过程中研究织物的热量和水分传递的详细信息。初始水分含量控制良好，可以均匀分布，而织物每个点的表面温度是通过实验设置获得的。
实验装置由热风机单元、红外热成像装置、均匀垫片系统等辅助装置组成。热风机单元根据实验要求，以指定的温度和速度向可调节的方向提供热空气。红外热成像仪记录每个冲击干燥过程的温度历史记录;因此，使用支持的后处理工具可以提取所录制视频的每个像素点的温度。均匀的垫片系统控制织物每个点的水分含量的均匀分布。最后，用织物水分均匀控制方法研究了空气冲击参数对织物干燥特性的影响。该过程可以按照下面描述的标准协议以可重复的方式进行。

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr>
			<td>Air Blower</td>
			<td>Zhejiang jiaxing hanglin electromechanical equipment co., Ltd.</td>
			<td>HLJT-3380-TX10A-0.55</td>
			<td>Air Volume: 900 m3/s;</td>
		</tr>
		<tr>
			<td>Anemometer</td>
			<td>KIMO</td>
			<td>MP210</td>
			<td>Measurement range: 0-40 m/s; Accuracy: &#177;0.1 m/s</td>
		</tr>
		<tr>
			<td>Drying stove</td>
			<td>Shanghai Shangyi Instrument Equipment Co., Ltd.</td>
			<td>DHG 101-0A</td>
			<td>precision: 1 &#176;C; Temperature control range:10-300 &#176;C</td>
		</tr>
		<tr>
			<td>Electronic Balance</td>
			<td>Hangzhou Wante Weighing Instrument Co., Ltd.</td>
			<td>WT1002</td>
			<td>Precision: 1 &#176;C; Range: 100 g</td>
		</tr>
		<tr>
			<td>Fabric Style Measuring Instrument</td>
			<td>SDL Atlas</td>
			<td>M293</td>
			<td></td>
		</tr>
		<tr>
			<td>Fabric Touch Tester</td>
			<td>SDLATLAS Ltd</td>
			<td></td>
			<td>Fabric thickness tester</td>
		</tr>
		<tr>
			<td>High thermal resistance board</td>
			<td>Baiqiang</td>
			<td></td>
			<td>Flame resistance, Heat resistance is greater than 200 &#176;C</td>
		</tr>
		<tr>
			<td>High-temperature resistant silicon pipeline</td>
			<td>Kamoer</td>
			<td>18#</td>
			<td>Temperature range: -60-200 &#176;C</td>
		</tr>
		<tr>
			<td>Infrared Thermogragh</td>
			<td>Hangzhou Meisheng Infrared 
			Optoelectronic Technology Co., Ltd.</td>
			<td>R60-1009</td>
			<td>Temperature measuring range: -20-410 &#176;C; Maximum measuring error: &#177;2 &#176;C</td>
		</tr>
		<tr>
			<td>Padder</td>
			<td>Yabo textile machinery co., Ltd.</td>
			<td></td>
			<td>Roller pressure: 0.03-0.8 MPa; Stable pressure; Easy adjustment</td>
		</tr>
		<tr>
			<td>Personal Computer</td>
			<td>Lenovo Group.</td>
			<td>L460</td>
			<td></td>
		</tr>
		<tr>
			<td>Temperature Sensor</td>
			<td>Taiwan TES electronic industry co., Ltd.</td>
			<td>1311A</td>
			<td>resolution: 1 &#176;C; Temperature measuring range: -50-1350 &#176;C</td>
		</tr>
	</tbody>
</table>

fabric moisture uniform control to study the influence of air impingement parameters on fabric drying characteristics

由于其高热性和质量转移系数，浸干性是织物干燥中广泛使用的有效方法。以往对织物干燥的研究忽视了水分均匀性和扩散系数对干燥过程的贡献;然而，它们最近已被证明对干燥特性有显著影响。本报告概述了通过控制织物区域水分分布的均匀性来调查空气冲击参数对织物干燥特性的影响的分步程序。配备可角度调节喷嘴的热风机单元用于使用红外热成像仪记录和分析干燥过程时，产生具有不同速度和温度的空气流量。此外，还采用了统一的垫片，以确保织物的水分均匀性。通过改变气流温度、速度和方向，在不同初始条件下对冲击干燥进行了研究，并评价了该协议的适用性和适用性。

图2中提供的数据是不同干燥阶段棉织物的典型温度轮廓，喷嘴出口的空气速度和温度分别为20.0米/s和120°C。如图2A、B、C、D所示，在空气冲击干燥下，温度从中心衰减到外围，形成同心圆套。同时，温度在直接撞击区域的边缘显著下降。可使用红外热像仪专用支持后处理工具绘制沿任意轨迹的温度分布。<strong class=...

Watch this Scientific Journal Video about Fabric Moisture Uniform Control to Study the Influence of Air Impingement Parameters on Fabric Drying Characteristics at JoVE.com

Fabric Moisture Uniform Control to Study the Influence of Air Impingement Parameters on Fabric Drying Characteristics

此处介绍的一个协议，保证织物内部初始水分的统一分布，并调查热空气热力学参数（速度、温度和方向）和厚度对织物干燥的影响特征（例如，温度变化）在空气冲击条件下。

织物水分统一控制研究空气冲击参数对织物干燥特性的影响

Impinging dryness is now a widely used and effective way for fabric drying due to its high heat and mass transfer coefficient. Previous studies on fabric ...

本协议提供了一种基于表面温度分布而不是单点温度的干燥性能分析方法，这是传统方法。作为其中的一部分，我们开发了一种技术，以获得均匀的水分分布在织物研究织物的干燥性能和空气冲击。该方法可对热刺激过程中纺织品的干燥提供深入的见解，并应用于纸张干燥行业。首先，开始加热烤箱到120摄氏度。让它在高温下干燥30分钟。同时，确保热风鼓风机连接到空气喷嘴。在大约 30 秒内，根据样品位置，缓慢地将空气喷嘴移动到 60 到 90 度之间。接下来，打开鼓风机风扇，然后为加热元件的电阻线供电。调节电流，直到达到所需的空气温度。喷嘴和空气可能非常热。不要触摸喷嘴，避免在实验期间将热风鼓风机直接引导到身上。接下来，按住垂直于空气喷嘴的风速计探头，并测量空气速度。调整风扇的转速以达到所需速度。之后，用隔热盖盖住空气喷嘴，在设置过程中屏蔽样品区域。然后，在空气喷嘴上方约一米高安装红外热成像摄像机。将热成像摄像机连接到计算机并打开仪器软件。然后使用针板夹具将标准织物样品安装在空气喷嘴出口上方 30 毫米处。将相机聚焦在织物上。然后，将温度单位设置为摄氏度，将热辐射设置为 0.95，将环境相对湿度设置为 50%，环境温度设置为 25 摄氏度，将测量对象与摄像机之间的距离设置为 1.5 米。接下来，确认统一垫片系统连接到空气压缩机。启动压缩机，并将其最大输出设置为 0.8 兆帕。手动调整夹紧油缸的压力调节器，以确保上辊两侧的压力相等。将水饱和、预称重的织物样品放在上辊上，然后运行均匀的垫片。之后关闭垫片，确认水分含量甚至在整个样品中。最后，一旦烤箱干燥，就设置为样品干燥温度。要开始准备织物样品，请切割一个400毫米的280毫米织物方，并在烤箱中干燥约三个小时。称量干织物，然后浸泡在水中五分钟。然后打开垫片并设置所需的初始压力。将饱和织物放在均匀垫片的顶部滚轮上。样品穿过滚轮后，取回样品并关闭垫片。称量湿织物样品并计算水分含量。如果需要，用纸巾擦干滚筒，然后再次通过均匀的垫片操作织物，直到达到所需的水分含量。然后确认鼓风机的温度和速度设置正确，喷嘴是否被隔热板覆盖。将样品安装在针板夹具中，然后开始使用热成像摄像机记录样品温度。拆下隔热盖，使热空气冲击样品的底面。监视计算机上不断增加的织物温度。一旦温度大致稳定至少 30 秒，织物就干到目标水平。停止记录温度，用隔热盖盖住喷嘴，然后从夹具上取出样品。在视频中设置目标区域进行分析，并提取温度数据。浏览视频，将各个帧从显著时间点保存为伪彩色图像。将保存的帧转换为灰度，并确定接近热空气温度的织物的强度值。使用该值将灰度图像双倍化为显示干燥区域的阈值。这种棉织物在空气冲击干燥下，从外围中心明显温度衰减。干燥织物中心在加热20秒后达到稳定状态温度。在冲击区的边缘观察到最小的加热。增加冲击空气的温度加快了干燥时间，也加快了空气速度。织物厚度也显著影响干燥时间。75度以下的空气冲击角大大降低了干燥中心的温度，增加了干燥时间。75 度以下的空气撞击角度也对应于较小的冲击区域。双化分析表明，70度冲击角使干燥面积减少约20%，65度角将干燥面积减少约40%。与90度角相比，干燥角减少约40%。获得所看到的织物的准确干燥性能的关键是初始水分含量的均匀分布和表面温度的连续测量。本研究为今后研究织物、纸张等板材的干燥特性铺平了道路。

Research

JoVE Journal

Engineering

Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles

等离子体聚合空心颗粒的封装和渗透特征

In this protocol, core-shell nanostructures are synthesized by plasma enhanced chemical vapor deposition. We produce an amorphous barrier by plasma ...

科研

工程学

Fabrication of VB2/Air Cells for Electrochemical Testing

Fabrication of VB2/Air Cells for Electrochemical Testing

VB制作<sub&gt; 2</sub&gt; /空气电池电化学测试

A technique to investigate the properties and performance of new multi-electron metal/air battery systems is proposed and presented. A method for ...

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding

通过硅直接晶圆粘接制造均匀纳米级腔

Measurements of the heat capacity and superfluid fraction of confined 4He have been performed near the lambda transition using lithographically patterned ...

Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids

快速成像技术来研究非牛顿流体的跌落冲击动力学

In the field of fluid mechanics, many dynamical processes not only occur over a very short time interval but also require high spatial resolution for ...

Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors

弯曲对基于晶体的柔性有机单场效应晶体管的电气特性的影响

The charge transport in an organic semiconductor depends highly on the molecular packing in the crystal, which influences the electronic coupling ...

Study of Siphon Breaker Experiment and Simulation for a Research Reactor

研究堆虹吸断路器试验与仿真研究

Under the design conditions of a research reactor, the siphon phenomenon induced by pipe rupture can cause continuous outward flow of water. To prevent ...

The Modular Design and Production of an Intelligent Robot Based on a Closed-Loop Control Strategy

基于闭环控制策略的智能机器人模块化设计与制作

Intelligent robots are part of a new generation of robots that are able to sense the surrounding environment, plan their own actions and eventually reach ...

Applicability Analysis of Assessment Methods for Morphological Parameters of Corroded Steel Bars

钢筋形态参数评价方法的适用性分析

The irregular and uneven residual sections along the length of a corroded steel bar substantially change its mechanical properties and significantly ...

Film Control to Study Contributions of Waves to Droplet Impact Dynamics on Thin Flowing Liquid Films

薄膜控制研究波浪对液滴冲击动力学的影响薄流动液体薄膜

Droplet impact is a very common phenomenon in nature and attracts attention due to its aesthetic fascination and wide-ranging applications. Previous ...

O-cresol Concentration Online Measurement Based On Near Infrared Spectroscopy Via Partial Least Square Regression

O-cresol 浓度在线测量基于近红外光谱通过部分最小平方回归

Unlike macroscopic process variables, near-infrared spectroscopy provides process information at the molecular level and can significantly improve the ...