Abstract: A dehumidification system according to an exemplary embodiment of the inventive concept performs dehumidification of indoor air without power waste and condensation heat by transferring water molecules of indoor air to the outdoor air through a porous separation membrane filter, thereby minimizing energy consumption. Also, the dehumidification system may perform dehumidification without outdoor air flow into the indoor space, which prevents indoor air temperature change due to outdoor air and inflow of pollutants like fine dust included in outdoor air.

Abstract: A supercritical carbon dioxide power generation system is provided. The supercritical carbon dioxide power generation system may include a regenerator, a turbine, a heat recoverer, a condenser, a compressor an expansion valve, a flash tank, a heat exchanger, and an ejector, and may utilize waste heat of the supercritical carbon dioxide power generation system.

Abstract: In a heat pump system according to the present invention, at least part of a plurality of outdoor heat-exchanging flow paths that pass through an outdoor heat exchanger is alternately selected as a flow path for defrosting and is used, and the other flow path is used as a flow path for evaporation so that defrosting and a heating operation can be simultaneously performed. In addition, the refrigerant in which a defrosting action is performed, while passing through the outdoor heat exchanger, is throttled and then is used for an evaporation action so that the structure of the heat pump system is simple and both heating and defrosting can be performed.

Abstract: A heat pump system includes a liquid receiver valve that adjusts the amount of a refrigerant stored in a liquid receiver so that a circulation amount of the refrigerant that circulates the heat pump system can be adjusted according to a driving speed of a compressor and performance of the compressor and the heat pump system can be further improved. Also, since a plurality of liquid receiver refrigerant outlets can be selectively opened using a pressure difference between an inlet and an outlet of the compressor, active control can be performed.

Abstract: In a heat pump system according to the present invention, at least part of a plurality of outdoor heat-exchanging flow paths that pass through an outdoor heat exchanger is alternately selected as a flow path for defrosting and is used, and the other flow path is used as a flow path for evaporation so that defrosting and a heating operation can be simultaneously performed. In addition, the refrigerant in which a defrosting action is performed, while passing through the outdoor heat exchanger, is throttled and then is used for an evaporation action so that the structure of the heat pump system is simple and both heating and defrosting can be performed.

Abstract: A heat pump system includes a liquid receiver valve that adjusts the amount of a refrigerant stored in a liquid receiver so that a circulation amount of the refrigerant that circulates the heat pump system can be adjusted according to a driving speed of a compressor and performance of the compressor and the heat pump system can be further improved. Also, since a plurality of liquid receiver refrigerant outlets can be selectively opened using a pressure difference between an inlet and an outlet of the compressor, active control can be performed.

Abstract: An air conditioner and a method of controlling the same are provided. The air conditioner may include an outdoor unit, one or more indoor units operably coupled to the outdoor unit, a temperature sensor, a valve driver, and a controller. By monitoring an actual temperature and comparing the actual temperature to a desired temperature, a flow path, of flow direction, and flow capacity flowing to the one or more indoor units to adjust a heating/cooling capacity thereof as appropriate.

Abstract: A method of controlling an air conditioner is provided. The method may include determining whether the air conditioner is operating in an abnormal state, and, when the air conditioner is operating in the abnormal state, operating a compressor in a safe mode having a different frequency pattern than when it is operated in a normal mode of the compressor. This allows the air conditioner to provide continuous heating/cooling, even when operating in an abnormal state.

Abstract: An air conditioner and a method of controlling the same are provided. The air conditioner may include an outdoor unit, one or more indoor units operably coupled to the outdoor unit, a temperature sensor, a valve driver, and a controller. By monitoring an actual temperature and comparing the actual temperature to a desired temperature, a flow path, of flow direction, and flow capacity flowing to the one or more indoor units to adjust a heating/cooling capacity thereof as appropriate.

Abstract: An air conditioning system includes an indoor heat exchange unit which exchanges heat with indoor air, and an outdoor heat exchange unit which exchanges heat with outdoor air. The outdoor heat exchange unit performs a defrosting operation to remove frost from the outdoor heat exchange unit while the indoor heat exchange unit simultaneously performs a heating operation to heat the indoor air.