Abstract: The present disclosure relates to a heat exchanger and an air conditioner including the same. The heat exchanger may be provided for heat exchange between refrigerant and air. The heat exchanger may include a plurality of refrigerant tubes that are disposed with a clearance (C) therebetween in a first direction (A), in which the air moves, and are disposed to be spaced apart in a second direction (B) crossing the first direction (A) and a plurality of heat exchange fins that are disposed between the plurality of refrigerant tubes disposed to be spaced apart in the second direction (B).

Abstract: The present technology relates to a spatial address-based management system, and the management system includes a spatial address-related information reception part configured to receive spatial address-related data assigned to each of segments generated by dividing a workspace into a plurality of rows and columns, a controller configured to process the spatial address-related data received from the spatial address-related information reception part and transmit the processed data to a spatial address-related data storage part, and the spatial address-related data storage part configured to store the spatial address-related data transmitted from the controller as spatial address data, wherein the spatial address data includes information on a unique position of the spatial address, information on a workpiece that is placed at the spatial address, and information on attributes or properties of the spatial address.

Abstract: Disclosed are a heat exchanger and an air conditioner including heat transfer tubes configured to guide a refrigerant, and a plurality of fins installed through which the heat transfer tubes penetrate and arranged to be spaced apart from each other in a second direction perpendicular to a first direction such that air passes through the fins in the first direction, wherein the plurality of fins each includes a plurality of inclined portions connected to each other in a zigzag form and inclined with respect to the first direction, and a plurality of louvers formed by being bent to form an angle with the inclined portions after portions of the plurality of inclined portions are cut, wherein a width of each of the plurality of louvers in the first direction after being bent is equal to or less than a width of the louvers in the first direction before being bent.

Abstract: Disclosed herein is a heat exchanger including a corrugated fin and an air conditioner including the same. The corrugated fin includes a through hole through which a heat transfer tube passes, a corrugated portion formed in a zigzag shape in the first direction corresponding to an air flow direction and a flat portion provided in the plane adjacent to the through hole, and the flat portion has a first length in the first direction corresponding to an air flow direction, and a second length shorter than the first length in a second direction perpendicular to the air flow direction.

Abstract: A heat exchanger according to an embodiment of the present disclosure and an air conditioner having the same include a heat transfer tube through which a refrigerant passes, a fin having a mounting hole in which the heat transfer tube is installed, and a fin collar extending from the mounting hole and being in contact with the heat transfer tube by the expansion of the heat transfer tube, wherein the fin collar includes a base portion provided adjacent to the fin and extending to be bent at a first curvature radius, and a distal end located on the opposite side of the base portion and extending to be bent at a second curvature radius smaller than the first curvature radius.

Abstract: The present disclosure relates to a heat exchanger and an air conditioner including the same. The heat exchanger may be provided for heat exchange between refrigerant and air. The heat exchanger may include a plurality of refrigerant tubes that are disposed with a clearance (C) therebetween in a first direction (A), in which the air moves, and are disposed to be spaced apart in a second direction (B) crossing the first direction (A) and a plurality of heat exchange fins that are disposed between the plurality of refrigerant tubes disposed to be spaced apart in the second direction (B).

Abstract: The present disclosure relates to a heat exchanger and an air conditioner improving heat exchange ability by optimizing the number of high protrusions of a heat transfer tube and a height difference between the high protrusion and a low protrusion to increase the heat transfer performance of the heat transfer tube or reduce the pressure loss in the tube. An air conditioner includes the heat exchanger including a heat transfer tube configured to allow the refrigerant to flow, fins installed on the heat transfer tube, and fin collars forming an insertion hole through which the heat transfer tube is inserted and passes, and the fin collars is in contact with the heat transfer tube by tube expansion of the heat transfer tube.

Abstract: The present disclosure relates to a heat exchanger and an air conditioner improving heat exchange ability by optimizing the number of high protrusions of a heat transfer tube and a height difference between the high protrusion and a low protrusion to increase the heat transfer performance of the heat transfer tube or reduce the pressure loss in the tube. An air conditioner includes the heat exchanger including a heat transfer tube configured to allow the refrigerant to flow, fins installed on the heat transfer tube, and fin collars forming an insertion hole through which the heat transfer tube is inserted and passes, and the fin collars is in contact with the heat transfer tube by tube expansion of the heat transfer tube.

Abstract: Disclosed herein is a heat exchanger including a corrugated fin and an air conditioner including the same. The corrugated fin includes a through hole through which a heat transfer tube passes, a corrugated portion formed in a zigzag shape in the first direction corresponding to an air flow direction and a flat portion provided in the plane adjacent to the through hole, and the flat portion has a first length in the first direction corresponding to an air flow direction, and a second length shorter than the first length in a second direction perpendicular to the air flow direction.

Abstract: Disclosed are a heat exchanger and an air conditioner including heat transfer tubes configured to guide a refrigerant, and a plurality of fins installed through which the heat transfer tubes penetrate and arranged to be spaced apart from each other in a second direction perpendicular to a first direction such that air passes through the fins in the first direction, wherein the plurality of fins each includes a plurality of inclined portions connected to each other in a zigzag form and inclined with respect to the first direction, and a plurality of louvers formed by being bent to form an angle with the inclined portions after portions of the plurality of inclined portions are cut, wherein a width of each of the plurality of louvers in the first direction after being bent is equal to or less than a width of the louvers in the first direction before being bent.

Abstract: A heat exchanger according to an embodiment of the present disclosure and an air conditioner having the same include a heat transfer tube through which a refrigerant passes, a fin having a mounting hole in which the heat transfer tube is installed, and a fin collar extending from the mounting hole and being in contact with the heat transfer tube by the expansion of the heat transfer tube, wherein the fin collar includes a base portion provided adjacent to the fin and extending to be bent at a first curvature radius, and a distal end located on the opposite side of the base portion and extending to be bent at a second curvature radius smaller than the first curvature radius.

Abstract: A method and apparatus for detecting the location of a buried pipe are disclosed. The apparatus includes an inductive source setting unit, an induced voltage measurement unit, a proportional graph generation unit, and a location determination unit. The inductive source setting unit sets an inductive source in a predetermined area which a location of a buried pipe is detected. The induced voltage measurement unit measures the induced voltages of conductive wires for measuring the induced voltages in the predetermined area based on the inductive source. The proportional graph generation unit generates a proportional graph using the measured induced voltages. The location determination unit detects the location of the buried pipe using the proportional graph.

Abstract: Disclosed is a carbon fiber composite comprising 30 to 80 wt % of a carbon fiber textile wherein a carbon fiber tow size is 24K to 100K; 0.1 to 20 wt % of a carbon non-woven fabric whose weight per unit area is 10˜500 g/m2; and 10 to 70 wt % of a polymer resin whose viscosity at transference thereof is 0.01˜10 Pa·s. Advantageously, it is possible to obtain a molded product of the carbon fiber composite which has good surface properties and flexural properties by selectively applying the carbon non-woven fabric to a surface of the material thereof using the carbon fiber composite.

Abstract: A method of accurately measuring earth resistance even when the composition state of soil that affects the installation of a metering device for measuring earth resistance is unknown. The method comprises measuring a potential at a first potential electrode point, measuring a potential at a second potential electrode point, calculating a voltage slope corresponding to a change rate of potential difference, using a potential difference between the first and second potential electrode points, and setting a potential point according to voltage slope characteristics and measuring earth resistance. A measurement approximating an accurate value of earth resistance can be performed even when soil composition characteristics are unknown at a site.

Abstract: Provided is a method of accurately measuring earth resistance even when the composition state of soil that affects the installation of a metering device for measuring earth resistance is unknown. The method comprises measuring a potential at a first potential electrode point, measuring a potential at a second potential electrode point, calculating a voltage slope corresponding to a change rate of potential difference, using a potential difference between the first and second potential electrode points, and setting a potential point according to voltage slope characteristics and measuring earth resistance. A measurement approximating an accurate value of earth resistance can be performed even when soil composition characteristics are unknown at a site.

Abstract: An apparatus for accurately extracting a selected channel of composite video signal from a time division multiplexed video signal. When a time division multiplexed video signal is reproduced from a video tape, noise may be induced due to tracking errors. To prevent noise from causing errors in demultiplexing of a given channel of composite video information from the time multiplexed video signal, a data detector (10) are provided to detect plural channel identification codes embedded in the vertical blanking period of the composite video signals. The plural detected channel identification codes are compared by comparators (60, 62) to determine if they match the channel identification code corresponding to a selected video channel. The results of the comparisons are subject to a logical OR operation (64) to determine when a composite video signal from a selected channel is to be appropriately extracted to be processed through a video signal processor (70) and for display on a monitor.