Abstract: 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.

Abstract: 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.

Abstract: A pressure control system for a CA room including a bladder and an active displacement control that are operable to control the internal pressure of the CA room through variations in displacement. The system may include a controller configured to vary the displacement of the bladder based on the difference between barometric pressure and CA room internal pressure. The system may control bladder displacement based on the output of a differential pressure sensor that measures the pressure differential between the CA room and barometric pressure, or the output of separate internal and external sensors that separately measure CA room pressure and barometric pressure. The bladder may be an inflatable bladder and the active displacement control may inflate and deflate the bladder to vary its displacement within the CA room. The active displacement control may include an active air supply with a blower that can quickly inflate and deflate the bladder.