Abstract: In an air conditioning system, a compressor, a condenser, and an indoor unit that functions as an evaporator during cooling, are provided in a circulation pathway of a refrigerant, in respective order during cooling. An additional heat exchanger is provided in the circulation pathway at a point that during cooling is between the condenser and the indoor unit. The additional heat exchanger is contained within a tank of a cooling device. The cooling device performs cooling of the additional heat exchanger by supplying water into the tank. Quantity of water supplied into the tank is controlled through open/close control of a control valve.

Abstract: A water quality purification system for a hybrid artificial wetland includes a first aerobic artificial wetland, an anaerobic artificial wetland, and a second aerobic artificial wetland. Here, the first aerobic artificial wetland induces a vertical flow of water, which is to be purified, and allows pollutants to be removed. The anaerobic artificial wetland induces a horizontal flow of treated water which is introduced from the first aerobic artificial wetland, and allows pollutants to be further removed. Additionally, the second aerobic artificial wetland induces a vertical flow of treated water which is introduced from the anaerobic artificial wetland, and allows air to be supplied inwardly such that the amount of dissolved oxygen of the introduced treated water increases.

Abstract: A water quality purification system for a hybrid artificial wetland includes a first aerobic artificial wetland, an anaerobic artificial wetland, and a second aerobic artificial wetland. Here, the first aerobic artificial wetland induces a vertical flow of water, which is to be purified, and allows pollutants to be removed. The anaerobic artificial wetland induces a horizontal flow of treated water which is introduced from the first aerobic artificial wetland, and allows pollutants to be further removed. Additionally, the second aerobic artificial wetland induces a vertical flow of treated water which is introduced from the anaerobic artificial wetland, and allows air to be supplied inwardly such that the amount of dissolved oxygen of the introduced treated water increases.

Abstract: In an air conditioning system, a compressor, a condenser, and an indoor unit that functions as an evaporator during cooling, are provided in a circulation pathway of a refrigerant, in respective order during cooling. An additional heat exchanger is provided in the circulation pathway at a point that during cooling is between the condenser and the indoor unit. The additional heat exchanger is contained within a tank of a cooling device. The cooling device performs cooling of the additional heat exchanger by supplying water into the tank. Quantity of water supplied into the tank is controlled through open/close control of a control valve.

Abstract: The present invention discloses a method for manufacturing an eyelet for a tarpaulin, the eyelet having upper and lower eyelet bodies each provided with a plurality of fixing protrusions formed in a shape of concentric circles on one surface thereof in such a manner that the plurality of fixing protrusions formed on the upper eyelet body confront to the plurality of fixing protrusions formed on the lower eyelet body, the method comprising the following steps of: a step of positioning the upper and lower eyelet bodies by using a conveying means in such a manner as to place the tarpaulin there between; a step of punching a given position on the tarpaulin fabric by means of a punching machine with an integrally-formed ultrasonic horn; a step of conveying the upper and lower eyelet bodies to a position of the ultrasonic horn and fusing the upper and lower eyelet bodies to the tarpaulin through the compression of the ultrasonic horn; a step of fusing a protruded part extending upwardly from the circumference of a

Abstract: The present invention discloses a method for manufacturing an eyelet for a tarpaulin, the eyelet having upper and lower eyelet bodies each provided with a plurality of fixing protrusions formed in a shape of concentric circles on one surface thereof in such a manner that the plurality of fixing protrusions formed on the upper eyelet body confront to the plurality of fixing protrusions formed on the lower eyelet body, the method comprising the following steps of: a step of positioning the upper and lower eyelet bodies by using a conveying means in such a manner as to place the tarpaulin there between; a step of punching a given position on the tarpaulin fabric by means of a punching machine with an integrally-formed ultrasonic horn; a step of conveying the upper and lower eyelet bodies to a position of the ultrasonic horn and fusing the upper and lower eyelet bodies to the tarpaulin through the compression of the ultrasonic horn; a step of fusing a protruded part extending upwardly from the circumference of a