Forced convection mass deposition and heat transfer onto a cylinder sheathed by protective garments

In chemical, biological, radiological, and nuclear protective clothing, a layer of activated carbon material in between two textile layers provides protection against hazardous gases. A cylinder in cross flow, sheathed by such material, is generally used to experimentally test the garment properties. This is, however, complicated and predictive...

Solvents for CO2 capture. Structure-activity relationships combined with vapour-liquid-equilibrium measurements

In this study a systematic approach was chosen to test and characterize amine systems for CO2 capture. Vapour-liquid-equilibrium measurements were performed on a homologue series of amines, with ethylene amine as base structure. Various functional groups were used that ranged in chemical and physical properties. The effect of the addition of the...

Optimizing the protection against the physiological burden of CBRN clothing

Soldiers can wear chemical, biological, radiological and nuclear (CBRN) protective clothing to be protected agaist warfare agents. The disadvantage of that clothing is that higher protection introduces higher physiological burden. Therefore an optimum between comfort and protection must be found. Models of all relevant processes were created to...

How to optimize comfort and protection of NBC-suits, the challenge to beat

Threat analysis CBRN (Risicoanalyse CBRN)

Modeling the relation between comfort and protection of CBRN-suits

Computational modelling of clothing performance

Computational fluid dynamic modeling of protective clothing systems

Protective clothing provides laboratory and hazardous materials workers, fire fighters, military personnel, and others with the means to control their exposure to chemicals, biological materials, and heat sources. Depending on the specific application, the textile materials used in protective clothing must provide high performance in a number of...

Uncovering the physics of skin protection

Having a good understanding of the physical phenomena governing the performance of CBRN protective equipment is the first step in optimizing existing or designing new equipment. Numerical simulations were conducted of the flow and mass transfer in a simplified model of permeable CBRN protective clothing material. On the basis of a comparison...

Modeling the chemical protective performance of NBC clothing material

The heat load, imposed by air-permeable NBC (nuclear, biological, and chemical)-protective suits, can be reduced by improving the air permeability of the suit. However, increased air permeability will reduce the chemical protective performance, since increasing the air permeability of the NBC-protective material will result in higher air...

A multi-scale numerical study of the flow, feat, and mass transfer in protective clothing

A multi-scale study of the performance of protective clothing has been performed by coupling various types of numerical simulation of flow, heat and mass transfer. From meso-scale Direct Numerical Simulation, it was found that the flow underneath the clothing is laminar and periodic, with a magnitude much smaller than the free stream velocity....

Computational fluid dynamic modeling of fabric systems for intelligent garment design

Protective clothing provides laboratory and hazardous matenals workers, fire fighters, military persomel, and others with the means to control their exposure to chemicals, biologica1 materials, and heat souces. Depending on the specific application, the textile matenals used in protective clothing must provide high performance in a nnmber of...

Evaluation of test criteria for NBC-protective clothing