Abstract: A dehumidification apparatus comprises an air inlet configured to receive an inlet airflow that is separated into a process airflow and a bypass airflow. An evaporator unit is operable to cool the process airflow by facilitating heat transfer from the process airflow to a flow of refrigerant as the process airflow passes through the evaporator unit. A condenser unit operable to (1) reheat the process airflow by facilitating heat transfer from the flow of refrigerant to the process airflow as the process airflow passes through a first portion of the condenser unit, and (2) heat the bypass airflow by facilitating heat transfer from the flow of refrigerant to the bypass airflow as the bypass airflow passes through a second portion of the condenser unit. The process airflow is discharged into the structure via a process airflow outlet and the bypass airflow is discharged into the structure via a bypass airflow outlet.

Abstract: A defrost bypass dehumidifier includes an air flow path with first, second and third segments in series from upstream to downstream and passing ambient air respectively to an evaporator coil then to a condenser coil and then discharging same. The air flow path has a bypass segment passing ambient air to the evaporator coil in parallel with the noted first air flow path segment.

Abstract: A method for killing pests in an affected area of a structure, comprises positioning a heat exchanger unit within an affected area, coupling a first end of an inlet hose to a faucet, and coupling a second end of the inlet hose to an inlet port of the heat exchanger unit such that the heat exchanger unit may receive a flow of water from the faucet. The heat exchanger unit generates heated air by transferring heat from the flow of water received from the faucet to air flowing through the heat exchanger unit. The method continues by positioning an electric heater proximate to the heat exchanger unit, the electric heater operable to further heat the heated air emitted by the heat exchanger unit to a target temperature greater than 120 degrees Fahrenheit, the further heated air being emitted into the affected area.

Abstract: A system for killing pests in an affected area of a structure comprises a heat pump unit placed within an affected area. The heat pump unit comprises an evaporator component, a condensor component, and a compressor component. The evaporator component is configured to receive a flow of water from a faucet, and transfer heat from the flow of water to a refrigerant. The condenser component is configured to receive the refrigerant from the evaporator component, and generate heated air by transferring heat from the refrigerant to air flowing through the condenser component. The heated air being emitted into the affected area is in order to raise the temperature of the affected area to a target temperature greater than 120 degrees Fahrenheit. The compressor component is configured to return the refrigerant from the evaporator component of the heat pump unit to the condenser component of the heat pump unit.

Abstract: In certain embodiments, a system for killing pests in an affected area includes a heat exchanger unit and an electric heater. The heat exchanger unit is placed within the affected area and is coupled to a faucet. The heat exchanger unit is configured to receive a flow of water from the faucet and to emit heated air by transferring heat from the flow of water to air flowing through the heat exchanger unit. The electric heater further heats the air emitted by the heat exchanger unit to a target temperature greater than 120 degrees Fahrenheit.

Abstract: A dehumidification apparatus comprises an air inlet configured to receive an inlet airflow that is separated into a process airflow and a bypass airflow. An evaporator unit is operable to cool the process airflow by facilitating heat transfer from the process airflow to a flow of refrigerant as the process airflow passes through the evaporator unit. A condenser unit operable to (1) reheat the process airflow by facilitating heat transfer from the flow of refrigerant to the process airflow as the process airflow passes through a first portion of the condenser unit, and (2) heat the bypass airflow by facilitating heat transfer from the flow of refrigerant to the bypass airflow as the bypass airflow passes through a second portion of the condenser unit. The process airflow is discharged into the structure via a process airflow outlet and the bypass airflow is discharged into the structure via a bypass airflow outlet.

Abstract: A dehumidifier includes an air flow path with first, second and third segments in series from upstream to downstream and passing ambient air respectively to an evaporator coil then to a condenser coil and then discharging same. The air flow path has a fourth segment passing ambient air to the condenser coil in parallel with the noted second air flow path segment. A bypass door is configured to selectively block air flow along the fourth segment and allow air flow along the fourth segment.

Abstract: A defrost bypass dehumidifier includes an air flow path with first, second and third segments in series from upstream to downstream and passing ambient air respectively to an evaporator coil then to a condenser coil and then discharging same. The air flow path has a bypass segment passing ambient air to the evaporator coil in parallel with the noted first air flow path segment.

Abstract: In certain embodiments, a system comprises an evaporator unit operable to receive an incoming airflow and a flow of refrigerant from an expansion device. The evaporator unit generates a cooled airflow by facilitating heat transfer from the incoming airflow to the flow of refrigerant. The cooled airflow has an absolute humidity less than an absolute humidity of the incoming airflow. The system further comprises a subcooler unit operable to receive the cooled airflow generated by the evaporator unit and the flow of refrigerant from a condenser unit located exterior to a structure. The subcooler unit generates an outgoing airflow by facilitating heat transfer from the flow of refrigerant to the cooled airflow, the outgoing airflow having a relative humidity less than a relative humidity of the cooled airflow. The system further comprises a supply fan operable to provide the outgoing airflow to the structure.

Abstract: In certain embodiments, a system for killing pests in an affected area includes a heat exchanger unit and an electric heater. The heat exchanger unit is placed within the affected area and is coupled to a faucet. The heat exchanger unit is configured to receive a flow of water from the faucet and to emit heated air by transferring heat from the flow of water to air flowing through the heat exchanger unit. The electric heater further heats the air emitted by the heat exchanger unit to a target temperature greater than 120 degrees Fahrenheit.

Abstract: A cross-flow heat exchanger, method of making a cross-flow heat exchanger, and a dehumidifier are provided. The cross-flow heat exchanger has an axial flow path extending through the heat exchanger from an inlet to an outlet and a transverse flow path oriented transversely to the axial flow path and extending through the heat exchanger from an inlet to an outlet. The transverse flow path is adjacent to and separate from the axial flow path. The surface area of the inlet of the axial flow path is less than the surface area of the outlet of the axial flow path. In a preferred embodiment, the heat exchanger has an exterior shape that is trapezoidal.

Abstract: A defrost bypass dehumidifier includes an air flow path with first, second and third segments in series from upstream to downstream and passing ambient air respectively to an evaporator coil then to a condenser coil and then discharging same. The air flow path has a bypass segment passing ambient air to the evaporator coil in parallel with the noted first air flow path segment.

Abstract: A dehumidifier includes an air flow path with first, second and third segments in series from upstream to downstream and passing ambient air respectively to an evaporator coil then to a condenser coil and then discharging same. The air flow path has a fourth segment passing ambient air to the condenser coil in parallel with the noted second air flow path segment. A bypass door is configured to selectively block air flow along the fourth segment and allow air flow along the fourth segment.

Abstract: A dehumidifier includes an air flow path with first, second and third segments in series from upstream to downstream and passing ambient air respectively to an evaporator coil then to a condenser coil and then discharging same. The air flow path has a fourth segment passing ambient air to the condenser coil in parallel with the noted second air flow path segment.

Abstract: A dehumidifier includes an air flow path with first, second and third segments in series from upstream to downstream and passing ambient air respectively to an evaporator coil then to a condenser coil and then discharging same. The air flow path has a fourth segment passing ambient air to the condenser coil in parallel with the noted second air flow path segment.

Abstract: A dehumidifier includes an impeller in a cabinet downstream of a condenser coil and drawing air through the cabinet from upstream to downstream through first, second and third segments of an air flow path from an evaporator coil to the condenser coil.

Abstract: A dehumidifier includes a compressor delivering hot compressed refrigerant, a desuperheater coil receiving refrigerant from the compressor and condensing same, a condenser coil receiving refrigerant from the desuperheater coil and condensing same, an expansion device receiving refrigerant from the condenser coil and expanding same, and an evaporator coil receiving refrigerant from the expansion device and evaporating same and delivering the refrigerant to the compressor, in a refrigeration cycle.