A dehumidifier includes a water tank, a body including a dehumidification device, and a water collection mechanism below the dehumidification device and between the body and the water tank. The water collection mechanism includes a water groove and a drainage passageway communicated with the water groove and configured to guide water produced by the dehumidification device to an inner wall of the water tank.

A dehumidifier includes a water tank, a body including a dehumidification device, and a water collection mechanism below the dehumidification device and between the body and the water tank. The water collection mechanism includes a water groove and a drainage passageway communicated with the water groove and configured to guide water produced by the dehumidification device to an inner wall of the water tank.

An apparatus that includes a supply duct and a return duct fluidly coupled to the supply duct. A first evaporator is disposed between the supply duct and the return duct. A second evaporator is disposed between the supply duct and the return duct. A fresh-air intake is disposed between the supply duct and the return duct upstream of the first evaporator and the second evaporator. A first plurality of dampers are disposed upstream of the first evaporator. A second plurality of dampers are disposed upstream of the second evaporator. A divider panel is disposed between the first evaporator and the second evaporator. The divider panel directs air egressing the first plurality of dampers across the first evaporator and air egressing the second plurality of dampers across the second evaporator.

An evaporator coil system includes a segmented evaporator coil. The segmented evaporator coil includes a primary segment and a secondary segment. A first plurality of evaporator circuit lines are fluidly coupled to the primary segment and a second plurality of evaporator circuit lines are fluidly coupled to the secondary segment. A suction line includes a first connection fluidly coupled to the primary segment and a second connection fluidly coupled to the secondary segment. A valve is arranged in fluid communication with the secondary segment so as to selectively restrict refrigerant flow through the secondary segment.

A dehumidification system includes a compressor, a primary evaporator, a primary condenser, a secondary evaporator, a secondary condenser, and a water pump. The secondary evaporator receives an inlet airflow and outputs a first airflow to the primary evaporator. The primary evaporator receives the first airflow and outputs a second airflow to the secondary condenser. The secondary condenser receives the second airflow and outputs a dehumidified airflow. The compressor receives a flow of refrigerant from the primary evaporator and provides the flow of refrigerant to the primary condenser. The primary condenser receives the flow of refrigerant and outputs the flow of refrigerant at a lower temperature through heat transfer with a flow of fluid. The flow of fluid is directed, by the water pump, to a heat exchanger or an external source, where heat is rejected from the flow of fluid.

A dehumidification system includes a compressor, a primary evaporator, a primary condenser, a secondary evaporator, and a secondary condenser. The secondary evaporator receives an inlet airflow and outputs a first airflow to the primary evaporator. The primary evaporator receives the first airflow and outputs a second airflow to the secondary condenser. The secondary condenser receives the second airflow and outputs a third airflow to the primary condenser. The primary condenser receives the third airflow and outputs a dehumidified airflow. The compressor receives a flow of refrigerant from the primary evaporator and provides the flow of refrigerant to the primary condenser.

A dehumidification system includes a compressor, a primary evaporator, a primary condenser, a secondary evaporator, a secondary condenser, a modulating valve, and an alternate condenser. The secondary evaporator receives an inlet airflow and outputs a first airflow to the primary evaporator. The primary evaporator receives the first airflow and outputs a second airflow to the secondary condenser. The secondary condenser receives the second airflow and outputs a third airflow to the primary condenser. The primary condenser receives the third airflow and outputs a dehumidified airflow. The compressor receives a flow of refrigerant from the primary evaporator and provides the flow of refrigerant to the modulating valve. The modulating valve directs the flow of refrigerant to the primary condenser and to the alternate condenser. The alternate condenser receives a portion of the flow of refrigerant for heat rejection, where the primary condenser receives the remaining portion of the flow of refrigerant.

A dehumidification system includes a compressor, a primary evaporator, a primary condenser, a secondary evaporator, and a secondary condenser. The secondary evaporator receives an inlet airflow and outputs a first airflow to the primary evaporator. The primary evaporator receives the first airflow and outputs a second airflow to the secondary condenser. The secondary condenser receives the second airflow and outputs a third airflow to the primary condenser. The primary condenser receives the third airflow and outputs a dehumidified airflow. The compressor receives a flow of refrigerant from the primary evaporator and provides the flow of refrigerant to the primary condenser.

A dehumidification system includes a compressor, a primary evaporator, a primary condenser, a secondary evaporator, and a secondary condenser. The secondary evaporator receives an inlet airflow and outputs a first airflow to the primary evaporator. The primary evaporator receives the first airflow and outputs a second airflow to the secondary condenser. The secondary condenser receives the second airflow and outputs a third airflow to the primary condenser. The primary condenser receives the third airflow and outputs a dehumidified airflow. The compressor receives a flow of refrigerant from the primary evaporator and provides the flow of refrigerant to the primary condenser.

An indoor unit of an air-conditioning apparatus includes: a heat exchanger which generates conditioned air by carrying out heat exchange between refrigerant and indoor air; and a drain pan disposed below a lower end of the heat exchanger to correct dew condensation water. The drain pan includes at a side portion thereof: a side dew receiving portion which receives dew condensation water; and a recessed portion disposed below the side dew receiving portion, the recessed portion being recessed toward an other side portion opposite to the side portion. A side face of the drain pan is provided with a heat insulating sheet covering an entire opening of the recessed portion.