A new experimental study of influence of fabric permeability, clothing sizes, openings and wind on regional ventilation rates

In this study, a local ventilation rates (VR) measuring system based on stead-state method was developed. This system can measure the local VR of the right arm, the left arm, the chest and the back locations of the upper body garment simultaneously. The whole clothing VR can also be computed. To study the influence of fabric permeability, clothing sizes, hem opening, and wind on local VR of the right arm, the chest and the back of the working garments, 9 jackets with different sizes and fabric permeability (permeable, semi-permeable and impermeable) were made. The results showed that the local VR for each garment location were significantly different. The chest had the largest local VR. Clothing ventilation rates were not liner with garment sizes. Closing garment bottom decreased more air exchange for chest and back comparatively. Wind increased both local and whole VR significantly. But the impacts were different according to different locations. © 2013 The Korean Fiber Society and Springer Science+Business Media Dordrecht

Effects of wind and clothing apertures on local clothing ventilation rates and thermal insulation

The purpose of this study was to investigate the effects of wind (0, 1.1 m/s) and clothing apertures (not closed, closed hem, closed hem and neck) and the combined effects of them on local clothing ventilation rates and localized thermal insulation. Nine working jackets with identical design but different garment sizes and fabric permeability were made. The results showed that wind and clothing apertures had distinct effects both on the local ventilation rates and the local thermal insulation. The local ventilation rates of the right arm were largest at 1.1 m/s wind speed with the clothing hem closed. Chest and back ventilation rates were higher at wind than at no wind. Closing the garment hem affected the local thermal insulation of the impermeable garments mostly. In addition to wind and garment apertures, garment sizes and fabric permeability also impacted the local ventilation rates and the thermal insulation

Commercial business amount in Nanjing headquarters.

<p>(a) Weight. (b) Volume.</p

The optimal commercial profits.

<p>The optimal commercial profits.</p

Real and predicted amounts of the disaster-relief materials.

<p>(a) Weight. (b) Volume.</p

Commercial business amount in other depots.

<p>(a) Weight. (b) Volume.</p

Disaster-relief materials delivery assigned to the logistics company.

<p>(a) Weight. (b) Volume.</p

The profits of emergency logistics.

<p>The profits of emergency logistics.</p

Business priority diagram.

<p>Business priority diagram.</p

The commercial profits in scheme 2.

<p>The commercial profits in scheme 2.</p