In this paper, we discussed the relationship of filter efficiency and pressure drop with the porosity, fiber diameter and filter thickness by Geodict. We found that filter efficiency will increase when filter porosity...In this paper, we discussed the relationship of filter efficiency and pressure drop with the porosity, fiber diameter and filter thickness by Geodict. We found that filter efficiency will increase when filter porosity and fiber diameter decreasing or filter thickness increasing. And the pressure drop has a linear relationship with filter thickness and non-linear relationship with filter porosity and fiber diameter. We also compared the simulation results with the real test results by TSI 3160. Although there are some differences, I think Geodict can be used to predict filter efficiency and pressure drop.展开更多
Cooling function is definitely one of the most desirable attributes of clothing. In spite of the recent progress on phase changing material (PCM) research, the final products with sufficient amount of cooling capabili...Cooling function is definitely one of the most desirable attributes of clothing. In spite of the recent progress on phase changing material (PCM) research, the final products with sufficient amount of cooling capability have not yet to be developed in market. A new concept of cooling fabrics has been proposed by applying “Peltier effect” to textile materials. It occurs whenever electrical current flows through two dissimilar conductors; depending on the direction of current flow, the junction of the two conductors will either absorb or release heat. This effect has been tested on P-type and N-type conducting polymers. A P-type conductive polypyrrole coated fabric was synthesized by in-situ polymerization on plain weave PET to make conductive fabrics. And an N-type electrically conductive material was synthesized by treatment of MWNT and polyethyleneimine(PEI). A noticeable amount of temperature difference has been found in the fabric.展开更多
The far-infrared radiation (Far-IR) has good effects on us, promoting the circulation of the blood and metabolic. So textile products including far-IR have been developed. But it is very difficult to measure the amoun...The far-infrared radiation (Far-IR) has good effects on us, promoting the circulation of the blood and metabolic. So textile products including far-IR have been developed. But it is very difficult to measure the amount of far-IR in the textile quickly and correctly. Newly developed Mercury Cadmium Telluride (MCT) sensor system could solve this problem.展开更多
基金Supported by SRC/ERC Programof MOST/KOSEF (R11 -2005 -065) ,Soongsil University
文摘In this paper, we discussed the relationship of filter efficiency and pressure drop with the porosity, fiber diameter and filter thickness by Geodict. We found that filter efficiency will increase when filter porosity and fiber diameter decreasing or filter thickness increasing. And the pressure drop has a linear relationship with filter thickness and non-linear relationship with filter porosity and fiber diameter. We also compared the simulation results with the real test results by TSI 3160. Although there are some differences, I think Geodict can be used to predict filter efficiency and pressure drop.
基金Supported by the Korea Science and Engineering Foundation (KOSEF) ,Soongsil University
文摘Cooling function is definitely one of the most desirable attributes of clothing. In spite of the recent progress on phase changing material (PCM) research, the final products with sufficient amount of cooling capability have not yet to be developed in market. A new concept of cooling fabrics has been proposed by applying “Peltier effect” to textile materials. It occurs whenever electrical current flows through two dissimilar conductors; depending on the direction of current flow, the junction of the two conductors will either absorb or release heat. This effect has been tested on P-type and N-type conducting polymers. A P-type conductive polypyrrole coated fabric was synthesized by in-situ polymerization on plain weave PET to make conductive fabrics. And an N-type electrically conductive material was synthesized by treatment of MWNT and polyethyleneimine(PEI). A noticeable amount of temperature difference has been found in the fabric.
基金Supported by SRC/ERC Programof MOST/KOSEF (R11 -2005 -065) ,Soongsil University
文摘The far-infrared radiation (Far-IR) has good effects on us, promoting the circulation of the blood and metabolic. So textile products including far-IR have been developed. But it is very difficult to measure the amount of far-IR in the textile quickly and correctly. Newly developed Mercury Cadmium Telluride (MCT) sensor system could solve this problem.
