Abstract: Disclosed herein is a heat exchanger, and more particularly, a heat exchanger of an aluminum alloy material designed to have an electric potential difference between a tube of the heat exchanger and a heat exchanger fin. A heat exchanger according to one aspect of the present disclosure includes a tube through which a refrigerant flows, a heat exchanger fin coupled to a surface of the tube, and a filler that couples the tube and the heat exchanger fin, wherein the tube is formed of an aluminum alloy material that includes a rare-earth metal, and the heat exchanger fin and the filler may be formed of aluminum alloy materials that include silicon (Si), copper (Cu), and zinc (Zn).

Abstract: An unified controller for controlling a plurality of air-conditioning systems which are capable of air-conditioning individual air-conditioning rooms of a building using different schemes. The unified controller is located under a Building Management System (BMS) controller which simultaneously manages a plurality of systems corresponding to arrangements of the building, and simultaneously controls a multiple air-conditioning system acting as one of the air-conditioning systems and a central air-conditioning system acting as the other one of the air-conditioning systems using a single control command. The unified controller performs error correction, addition of a new function, and update of pre-loaded functions upon receiving a request from the remote controller.

Abstract: An unified controller for controlling a plurality of air-conditioning systems which are capable of air-conditioning individual air-conditioning rooms of a building using different schemes. The unified controller is located under a Building Management System (BMS) controller which simultaneously manages a plurality of systems corresponding to arrangements of the building, and simultaneously controls a multiple air-conditioning system acting as one of the air-conditioning systems and a central air-conditioning system acting as the other one of the air-conditioning systems using a single control command. The unified controller performs error correction, addition of a new function, and update of pre-loaded functions upon receiving a request from the remote controller.

Abstract: An air conditioning system includes an indoor heat exchanging unit, an outdoor heat exchanging unit, a compressor forming a closed loop together with the indoor and outdoor heat exchanging units to compress refrigerant, and a compressor driver to drive the compressor.

Abstract: An air conditioning system includes an indoor heat exchanging unit, an outdoor heat exchanging unit, a compressor forming a closed loop together with the indoor and outdoor heat exchanging units to compress refrigerant, and a compressor driver to drive the compressor.

Abstract: An air conditioner and a method of controlling the air conditioner includes a variable capacity compressor being operated at a maximum capacity in a case of starting an operation of the compressor after an extended stoppage for a lengthy period of time longer than a preset reference time, thus increasing a flow rate of a circulated refrigerant during an initial stage of the operation and increasing a quantity of heat generated from the motor of the compressor to vaporize and forcibly discharge a remaining liquid refrigerant from the compressor during the initial stage. Therefore, the variable capacity compressor of the air conditioner does not require heaters conventionally used for heating the refrigerant during such a stoppage, and so easy designing and production of the compressor is achieved, in addition to a reduction in a production cost of the air conditioner. This air conditioner also accomplishes a reduction in a maintenance cost thereof.

Abstract: An air conditioner and a method of controlling the air conditioner includes a variable capacity compressor being operated at a maximum capacity in a case of starting an operation of the compressor after an extended stoppage for a lengthy period of time longer than a preset reference time, thus increasing a flow rate of a circulated refrigerant during an initial stage of the operation and increasing a quantity of heat generated from the motor of the compressor to vaporize and forcibly discharge a remaining liquid refrigerant from the compressor during the initial stage. Therefore, the variable capacity compressor of the air conditioner does not require heaters conventionally used for heating the refrigerant during such a stoppage, and so easy designing and production of the compressor is achieved, in addition to a reduction in a production cost of the air conditioner. This air conditioner also accomplishes a reduction in a maintenance cost thereof.