摘要:
Energy consumption data of a building and temperature data outside the building collected over a period of time are correlated and segmented into a plurality of segments including at least a heating consumption segment, a cooling segment, and temperature-insensitive segment. An energy efficiency coefficient for heating from the heating consumption segment, an energy efficiency coefficient for cooling from the cooling consumption segment, an energy efficiency coefficient for other energy consuming activities from the temperature insensitive segment are determined, and scaled. The energy efficiency coefficient for heating, the energy efficiency coefficient for cooling and the energy efficiency coefficient for other energy consuming activities are used to assess energy efficiency among one or more buildings, forecast future consumption of energy in the building based on forecasted temperature and simulate impact of hypothetical temperature and hypothetical energy efficiency on energy consumption in the building.
摘要:
Provided is a high-speed and ultra-low-power-consumption nonvolatile memory having a high temperature stability at a zero magnetic field. In a tunnel magnetoresistive film constituting a nonvolatile magnetic memory that employs a writing method using a spin-transfer torque, an insulating layer and a nonmagnetic conductive layer are stacked above a ferromagnetic free layer.
摘要:
Provided are a cyber shopping mall management apparatus, and a system and method for managing a cyber shopping mall using the apparatus that can reduce a return rate of a purchased wear item. The cyber shopping mall management method includes adjusting a size of an image of a wear item to be purchased to fit a size of an image of an object to wear the wear item, synthesizing the adjusted wear item image onto the object image, and transmitting the synthesized image to a buyer. Thus, the cyber shopping mall management system and method enable a buyer to indirectly examine whether a wear item to be purchased can fit an object through an image of the object wearing the desired wear item, thus reducing a return rate of purchased wear items.
摘要:
An electric oven with a door cooling structure includes a cavity formed in the case to provide a high temperature environment, a door for selectively opening and closing the cavity, inner, intermediate and outer panels provided in the door; an airflow shielding panel for blocking a space formed below the intermediate panel to guide introduced air upward; a door cover for blocking a top of the door, which is defined between the inner and outer panels, and a fan for applying negative pressure to gaps defined between the inner, intermediate and outer panels so that the panels can be cooled by the air flowing upward and downward in the gaps.
摘要:
A BGA package includes a semiconductor chip, and a PCB having a board body, a plurality of circuit patterns, a plurality of signal via holes, a solder resist, and a plurality of thermal emissive vias. The thermal emissive vias are holes located beneath a chip attach area, and these holes are filled with metal having a low melting point. The metal prevents moisture from being absorbed, while effectively transferring heat. The semiconductor chip is attached to the chip attach area of the PCB and is connected to circuit patterns of the PCB with bonding wires. The bonding wires and the semiconductor chip are encapsulated to protect them from external environmental stress. Solder bumps are formed on circuit patterns of the PCB. The BGA package has advantages in that it prevents moisture from penetrating to the chip through the thermal emissive vias, and effectively transfers the heat generated by the chip to the outside.
摘要:
There is provided a transformer capable of significantly reducing leakage inductance while satisfying safety standards. The transformer includes: a winding part having a plurality of coils wound on an outer peripheral surface of a pipe shaped body part while being stacked thereon; and a terminal connection part extended from one end of the winding part in an outer diameter direction thereof and having a plurality of external connection terminals coupled to a distal end thereof, the terminal connection part including at least one catching groove formed such that the coils are led to the outside of the winding part therethrough, and a lead wire of at least one of the coils being led to the outside of the winding part while maintaining a winding direction of the coils.
摘要:
There is provided a transformer having a minimized leakage inductance. The transformer includes: a winding part including a pipe shaped body part having a plurality of coils wound therearound and flange parts extended from both ends of the body part in an outer diameter direction thereof; and a core coupled to the winding part, wherein a flange part formed at one end of the body part includes at least one lead groove, and the coils are led to the outside of the winding part through the at least one lead groove.
摘要:
There is provided a coil component in which a plurality of coils may be easily connected to external connection terminals. The coil component includes: a bobbin including a winding part having a coil wound therearound and a terminal connection part having at least one external connection terminal connected thereto, the external connection terminal having a lead wire of the coil connected thereto; and at least one auxiliary terminal part coupled to the terminal connection part to allow for an increase in an amount of the external connection terminal.
摘要:
There is provided a thin transformer capable of being used in a thin display device such as a liquid crystal display (LCD) device and a light emitting diode (LED) display device. The transformer includes: a bobbin part including a plurality of bobbins, each including a pipe shaped body part having a though-hole formed in an inner portion thereof, a flange part vertically protruding outwardly from both ends of the body part, and external connection terminals protruding from one side of a lower flange part formed at a lower end of the body part; a core inserted into the through-hole of the bobbin to thereby form a magnetic path; and a coil part including coils each wound around the plurality of bobbins, wherein the bobbin part includes an inner bobbin and an outer bobbin, and the inner bobbin is coupled to the outer bobbin such that the external connection terminals of the inner bobbin and the external connection terminals of the outer bobbin are opposed to each other.
摘要:
There is provided a power supply apparatus including an overvoltage protection function, the power supply apparatus including: a power supply unit supplying a predetermined input power supply; a rectification unit generating a first power supply by rectifying the input power supply; a main circuit unit generating a second power supply from the first power supply; and an overvoltage blocking unit blocking overvoltages and overcurrents, wherein the overvoltage blocking unit includes varistors connected between at least one of a live line and a neutral line of the input power supply and a ground.