Abstract: Disclosed are a carbon dioxide absorbent composition in which an N-alkylaminoalkanol; a polyhydroxyamine-based compound; and ethylenediamine and/or diethylenetriamine are mixed, a method for preparing the same, and a method and an apparatus for carbon dioxide absorption/separation using the same. Since the carbon dioxide absorbent according to the present disclosure has superior carbon dioxide absorption capacity and remarkably lower absorbent recycling temperature as compared to the existing absorbents such as monoethanolamine, etc., total energy consumption in the capturing process can be reduced greatly. In addition, since carbon dioxide is recovered at low recycling temperature, contamination by water or absorbent vapor may be prevented.

Abstract: Disclosed is a fire detector and a fire warning method. The fire detector includes: a fire sensor detecting a factor corresponding to fire; and a controller determining whether a fire has occurred, by using a sensed value of the fire sensor, and determining whether a reset event is generated, through an on/off state of the lamp. The fire warning method includes: performing, by a controller, monitoring for a fire; determining, by the controller, whether a fire has occurred; and giving a warning when it is determined that a fire has occurred, and simultaneously determining whether a reset event is generated, through an on/off state of a lamp.

Abstract: Disclosed is a fire detector and a fire warning method. The fire detector includes: a fire sensor detecting a factor corresponding to fire; and a controller determining whether a fire has occurred, by using a sensed value of the fire sensor, and determining whether a reset event is generated, through an on/off state of the lamp. The fire warning method includes: performing, by a controller, monitoring for a fire; determining, by the controller, whether a fire has occurred; and giving a warning when it is determined that a fire has occurred, and simultaneously determining whether a reset event is generated, through an on/off state of a lamp.