The present invention provides an integrated system of moisture removal, air purification, and air ventilation of the process air while some of the energy and resources required for operation of the system are self-sustained, or in some aspects the present system is self-regenerated such as heating and cooling of air and water exchanged among various elements/modules/members within the system or between the system and the surroundings, such that it becomes an all-time and all-round air dehumidifier, purifier and ventilator. Related method for removing air moisture from the surroundings using the present system is also provided.

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 for use with a dehumidification refrigerant to dry ambient air as part of a heating, ventilation, and air-conditioning (“HVAC”) system that includes an HVAC condenser as part of an HVAC refrigeration circuit. The dehumidification system may include a dehumidification refrigeration circuit separate from the HVAC refrigeration circuit. The dehumidification circuit may include a dehumidification compressor, a dehumidification condenser, a dehumidification expansion device, and a dehumidification evaporator. The dehumidification condenser may be positioned in close proximity to the HVAC condenser such that airflow across the HVAC condenser also flows across the dehumidification condenser. The dehumidification evaporator may be spaced apart from the dehumidification condenser such that airflow across the dehumidification evaporator does not flow across the dehumidification condenser.

An air conditioner may include an outdoor unit including a compressor and an outdoor heat exchanger configured to heat exchange compressed refrigerant; an indoor unit having an air inlet and an air outlet and connected with the outdoor unit through a first pipe through which refrigerant discharged from the compressor flows and a second pipe through which refrigerant discharged from the outdoor heat exchanger flows; a blowing fan disposed in the indoor unit; a main heat exchanger configured to heat exchange air, which flows inside through the air inlet, and connected with the second pipe; a reheat exchanger disposed downstream of the main heat exchanger and connected with the first pipe; and a waste heat exchanger disposed upstream of the main heat exchanger and configured to heat-exchange air, which flows inside through the air inlet, and condensate water, which is produced at the main heat exchanger, with each other. Accordingly, air flowing inside through the air inlet is primarily cooled before exchanging heat through the main heat exchanger, whereby the cooling and dehumidifying performance is improved.

A multi-use system for influencing organic matter in an environmentally controlled room is provided with a modular dehumidification system. The modular dehumidification system includes a head unit, with separate cooling and heating subcircuits, and multiple modular dehumidifier units. Each modular dehumidifier unit has a cooling coil operable to cool and/or dehumidify the air and a heating coil operable to heat the air, for example, to raise room temperature and/or offset heat loss arising during dehumidification. The cooling coils are connected to the head unit in parallel to one another and the heating coils are connected to the head unit in parallel to one another. The number of modular dehumidifier units installed in the system is selected to provide the system with the desired maximum capacity. The control system may be configured to activate the appropriate number of cooling and heating coils, and to control the operation of each active coil.

An integrated air conditioning system includes a ventilation device comprising a first temperature sensor, a first humidity sensor, and a heat exchanger installed on the inlet flow path. An indoor unit configured to discharge heat-exchanged air into an indoor space. An outdoor unit configured to supply a refrigerant to the ventilation device and the indoor unit. A controller connected to the ventilation device, the indoor unit, and the outdoor unit. The controller configured to obtain an indoor temperature from the first temperature or the second temperature sensor. The controller configured to obtain indoor humidity from the first humidity sensor or the second humidity sensor and configured to control at least one of the ventilation device and the indoor unit based on the indoor temperature and the indoor humidity.

A cooling recover system and method are disclosed. A fluid, such as water, is chilled and provided to a cooling coil to cool and dehumidify air passing over the cooling coil. The fluid is output from the cooling coil through an outlet, and at least a portion of the fluid from the outlet of the cooling coil is provided to an inlet of a heat transfer coil to reheat air passing over the heat transfer coil. The fluid is warmed as it passes through the cooling coil, which warmer temperature serves to reheat the air passing over the heat transfer coil.

A dehumidification system includes a primary evaporator, a primary condenser, a secondary evaporator, a secondary condenser, a superheat control evaporator, and a modulating valve. The superheat control evaporator is disposed in series with the secondary evaporator and is configured to receive an inlet airflow and output a first airflow to the secondary evaporator. The secondary evaporator receives the first airflow and outputs a second airflow to the primary evaporator. The primary evaporator receives the second airflow and outputs a third airflow to the secondary condenser. The secondary condenser receives the third airflow and outputs a fourth airflow to the primary condenser. The primary condenser outputs a dischargeable airflow. The modulating valve directs the flow of refrigerant to the secondary condenser or to the primary evaporator, depending on the mode of operation.

A dehumidification system includes a primary evaporator, a primary condenser, a secondary evaporator, a secondary condenser, a superheat control evaporator, and a modulating valve. The superheat control evaporator is disposed parallel to the secondary evaporator and is configured to receive one of the inlet airflows and output a first airflow to the primary evaporator. The secondary evaporator is configured to receive another one of the inlet airflows and output a second airflow to the primary evaporator. The primary evaporator receives the first and second airflows and outputs a third airflow to the secondary condenser. The secondary condenser receives the third airflow and outputs a fourth airflow to the primary condenser. The primary condenser outputs a dischargeable airflow. The modulating valve directs the flow of refrigerant to the secondary condenser or to the primary evaporator, depending on the mode of operation.

An HVAC system for controlling conditions in one or more grow rooms. The HVAC system includes pumps, sensors, controller(s) and valve(s) that mitigate undesired over cooling, which may result in thermally stressing the plants. To counteract the undesired overcooling the HVAC system utilizes reheat to return grow room temperatures to optimal conditions.