Electroosmosis has been shown to be an effective means of different applications in various fields such as Micro-Electro-Mechanical systems （MEMS） and biomimetics applications. This paper aims to prove the concept t...Electroosmosis has been shown to be an effective means of different applications in various fields such as Micro-Electro-Mechanical systems （MEMS） and biomimetics applications. This paper aims to prove the concept that the electroosmosis phenomena can also be cooperated into larger scale applications in the building service industry like dehumidification or damping proof. The electroosmotic flow inside a porous medium is validated experimentally to further understand the dehumidification mechanism of combined techniques. An experimental test validates that the condensation from the porous medium can be obtained by electroosmotic force generated by external electric field, especially for specific desiccant powders like zeolite and diatomaceous earth. With a range of volts from 5 V to 20 V applying between the testing plates, the maximum flow rate through the cross section in the testing plate achieved during the peak period is 1.35 laL＇min 1. These promising phenomena can act as an alternative way for energy choice in dehumidification industrial field. Further researches on new regeneration methods for solid desiccant dehumidification are required to make the system simple, energy-saving and suitable for small air conditioning units.展开更多
The study investigates the applicability of solid desiccant system for drying of freshly harvested wheat grains in order to reduce the moisture content to an optimum level.Fast and low-temperature drying systems are r...The study investigates the applicability of solid desiccant system for drying of freshly harvested wheat grains in order to reduce the moisture content to an optimum level.Fast and low-temperature drying systems are required by today’s drying industries in order to provide economical and safe drying.Therefore,comparison of desiccant drying has been made with the conventional method in terms of drying kinetics,allowable time for safe storage,the total time for drying cycle,and overall energy consumption.It has been found that the air conditions of proposed desiccant drying system provides a high drying rate and longer allowable storage time for safe drying.As the desiccants possess water adsorbing ability by means of vapor pressure deficit,therefore,the desiccant system successfully provides low-temperature drying which ensures the quality of wheat grains.Overall energy consumption is estimated for both conventional hot air drying and desiccant drying system.It has been found that the desiccant system requires less energy as drying is accomplished at minimum level of air flow and within allowable storage time.In addition,the overall performance index of the desiccant system is higher at all temperatures.The study is useful for developing a low-cost and sustainable drying technology for various agricultural products.展开更多
Natural gas and biogas are two mixtures that consist of methane as their main component.These two gas mixtures are usually saturated with water vapor,which cause many problems,such as damaging the gas processing equip...Natural gas and biogas are two mixtures that consist of methane as their main component.These two gas mixtures are usually saturated with water vapor,which cause many problems,such as damaging the gas processing equipment by increasing the gas’s corrosion potential or clogging the pipelines due to gas hydrate formation.Thus,removing water vapor from these gas streams is mandatory.In this review paper,the main dehydration methods have been overviewed,and scrutiny of the adsorption dehydration has been carried out.Furthermore,the most important solid desiccants and their improvements have been reviewed.展开更多
文摘Electroosmosis has been shown to be an effective means of different applications in various fields such as Micro-Electro-Mechanical systems （MEMS） and biomimetics applications. This paper aims to prove the concept that the electroosmosis phenomena can also be cooperated into larger scale applications in the building service industry like dehumidification or damping proof. The electroosmotic flow inside a porous medium is validated experimentally to further understand the dehumidification mechanism of combined techniques. An experimental test validates that the condensation from the porous medium can be obtained by electroosmotic force generated by external electric field, especially for specific desiccant powders like zeolite and diatomaceous earth. With a range of volts from 5 V to 20 V applying between the testing plates, the maximum flow rate through the cross section in the testing plate achieved during the peak period is 1.35 laL＇min 1. These promising phenomena can act as an alternative way for energy choice in dehumidification industrial field. Further researches on new regeneration methods for solid desiccant dehumidification are required to make the system simple, energy-saving and suitable for small air conditioning units.
文摘The study investigates the applicability of solid desiccant system for drying of freshly harvested wheat grains in order to reduce the moisture content to an optimum level.Fast and low-temperature drying systems are required by today’s drying industries in order to provide economical and safe drying.Therefore,comparison of desiccant drying has been made with the conventional method in terms of drying kinetics,allowable time for safe storage,the total time for drying cycle,and overall energy consumption.It has been found that the air conditions of proposed desiccant drying system provides a high drying rate and longer allowable storage time for safe drying.As the desiccants possess water adsorbing ability by means of vapor pressure deficit,therefore,the desiccant system successfully provides low-temperature drying which ensures the quality of wheat grains.Overall energy consumption is estimated for both conventional hot air drying and desiccant drying system.It has been found that the desiccant system requires less energy as drying is accomplished at minimum level of air flow and within allowable storage time.In addition,the overall performance index of the desiccant system is higher at all temperatures.The study is useful for developing a low-cost and sustainable drying technology for various agricultural products.
文摘Natural gas and biogas are two mixtures that consist of methane as their main component.These two gas mixtures are usually saturated with water vapor,which cause many problems,such as damaging the gas processing equipment by increasing the gas’s corrosion potential or clogging the pipelines due to gas hydrate formation.Thus,removing water vapor from these gas streams is mandatory.In this review paper,the main dehydration methods have been overviewed,and scrutiny of the adsorption dehydration has been carried out.Furthermore,the most important solid desiccants and their improvements have been reviewed.
