Abstract: Disclosed herein are a clothes dryer and a control method thereof in which a drying time is adjusted according to wool content during a drying cycle of a wool course. Wool content of woolen textiles is judged by sensing a dryness of the woolen textiles during a drying cycle of a wool course, and a drying time is adjusted according to the wool content, thereby minimizing contraction or deformation of the woolen textiles while satisfying the range of a target dryness set by wool mark standards. Further, only a high-capacity heater is driven during the drying cycle of the wool course, thereby allowing an internal temperature of a rotary drum to keep the optimum temperature without contraction or deformation of the woolen textiles.

Abstract: A system for preparing silica aerogel powders. The system includes a material supplier, a mixer, a drier and a recoverer. The material supplier transmitting de-ionized water, water glass, an organosilane compound, an inorganic acid and at least one organic solvent. Some of organic solvents are mixed and transmitted to the mixer and tramining organic solvent is transmitted to the mixer. The mixer mixes the materials transmitted from the material supplier so as to generate silica hydrogel. The drier dries the silica hydrogel so as to generate silica aerogel powders. The recoverer recovers some vaporized materials of the materials used in the mixer and the drier.

Abstract: A system for preparing silica aerogel powders. The system includes a material supplier, a mixer, a drier and a recoverer. The material supplier transmitting de-ionized water, water glass, an organosilane compound, an inorganic acid and at least one organic solvent. Some of organic solvents are mixed and transmitted to the mixer and tramining organic solvent is transmitted to the mixer. The mixer mixes the materials transmitted from the material supplier so as to generate silica hydrogel. The drier dries the silica hydrogel so as to generate silica aerogel powders. The recoverer recovers some vaporized materials of the materials used in the mixer and the drier.

Abstract: A method of preparing silica aero-gel powders having a short preparation time and stable preparation processes. In the method, the silica aerogel powders are generated by using a water glass solution, an inorganic acid, an organosilane compound and an organic solvent. The method includes dispersion-solution generating, gelating and solvent exchanging and drying. In the dispersion-solution generating, a dispersion solution is generated by dispersing the water glass solution and the organosilane compound in the organic solvent. In the gelating and solvent exchanging, silica hydrogel is generated by adding the inorganic acid to the dispersion solution and simultaneously performing gelating and solvent-exchanging. In the drying, the silica aerogel powders are generated by drying the silica hydro-gel.

Abstract: Disclosed herein are a clothes dryer and a control method thereof in which a drying time is adjusted according to wool content during a drying cycle of a wool course. Wool content of woolen textiles is judged by sensing a dryness of the woolen textiles during a drying cycle of a wool course, and a drying time is adjusted according to the wool content, thereby minimizing contraction or deformation of the woolen textiles while satisfying the range of a target dryness set by wool mark standards. Further, only a high-capacity heater is driven during the drying cycle of the wool course, thereby allowing an internal temperature of a rotary drum to keep the optimum temperature without contraction or deformation of the woolen textiles.

Abstract: A method for controlling a solar charge device and a portable terminal using the same by registering a driver software for controlling the solar charge device in an operating system. Upon booting of the portable terminal, and enabling the charge detection terminal every set given time period stored in the driver software after the booting completion, a charge detection signal corresponding to presence of power output of a solar cell being input to the charge detection terminal. The method and the portable terminal prevent the occurrence of lock-up in the portable terminal due to frequent interrupts occurring in the charge detection terminal from a non-uniform output of a solar cell that may occur as movement of the portable terminal can vary the amount of sunlight received by the solar cell.

Abstract: An apparatus for preparing a catalyst for carbon nanotubes using spray pyrolysis and a method for preparing the catalyst are disclosed. The apparatus comprises a plurality of raw material tanks, an agitator to mix raw materials respectively supplied from the raw material tanks, a drier to spray the mixture supplied from the agitator and thus to heat and bake the same, and a storage to store a dried material discharged from the drier. The method comprises supplying a plurality of raw materials, mixing the raw materials with one another, spraying the raw material mixture in a liquid state and drying the same at a high temperature, and storing a catalyst generated in the drying process.

Abstract: An apparatus for preparing a catalyst for carbon nanotubes using spray pyrolysis and a method for preparing the catalyst are disclosed. The apparatus comprises a plurality of raw material tanks, an agitator to mix raw materials respectively supplied from the raw material tanks, a drier to spray the mixture supplied from the agitator and thus to heat and bake the same, and a storage to store a dried material discharged from the drier. The method comprises supplying a plurality of raw materials, mixing the raw materials with one another, spraying the raw material mixture in a liquid state and drying the same at a high temperature, and storing a catalyst generated in the drying process.