A high elongated portable air-conditioner is disclosed. The air-conditioner comprises a compressor, a condenser, and an evaporator located inside a housing. The air conditioner further comprises a cool air inlet and outlet and a warm air inlet and outlet. The air-conditioner has an axial evaporator fan and a radial condenser fan and the housing of the air-conditioner has an elongated shape where the end sections of the elongated air conditioner housing forms a top section and a bottom section, respectively. Other features of a portable air-conditioner are also disclosed.

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.

A dry space creation system includes a hollow treatment tank configured to house a material to be treated, an inflatable balloon member having a balloon shape configured to be inflated and deflated by supply and exhaust of air, the inflatable balloon member being provided inside the treatment tank, and being configured to be inflated while leaving a partial area in the treatment tank, a dry air supply unit configured to supply dry air into the area, and an inflation air supply unit configured to supply air into the inflatable balloon member.

A flow control device including a first channel, a second channel, and a diaphragm positioned between the first channel and the second channel, wherein the diaphragm includes a first side and a second side that faces an opposite direction as the first side. The diaphragm is configured and arranged to alternatively operate in both: a closed condition in which flow from the first channel to the second channel is impeded, and an open condition in which flow from the first channel to the second channel occurs. The diaphragm is also configured and arranged to change from the closed condition to the open condition when a force of a positive fluid flow through the first channel towards the first side of the diaphragm exceeds a combination of a gravitational force and a force of atmospheric pressure upon the second side of the diaphragm.

A diaphragmatic elbow damper joining two angularly oriented channels and configured to seal the channels in the absence of fluid flow overcoming gravity and atmospheric pressure.

A dry space creation system includes a hollow treatment tank configured to house a material to be treated, an inflatable balloon member having a balloon shape configured to be inflated and deflated by supply and exhaust of air, the inflatable balloon member being provided inside the treatment tank, and being configured to be inflated while leaving a partial area in the treatment tank, a dry air supply unit configured to supply dry air into the area, and an inflation air supply unit configured to supply air into the inflatable balloon member.

A high elongated portable air-conditioner includes a compressor, a condenser, and an evaporator located inside a housing. The air conditioner also includes a cool air inlet and outlet and a warm air inlet and outlet. The air-conditioner has an axial evaporator fan and a radial condenser fan and the housing of the air-conditioner has an elongated shape where the end sections of the elongated air conditioner housing forms a top section and a bottom section, respectively. Other features of a portable air-conditioner are also disclosed.

A diaphragmatic elbow damper joining two angularly oriented channels and configured to seal the channels in the absence of fluid flow overcoming gravity and atmospheric pressure.

A high elongated portable air-conditioner is disclosed. The air-conditioner comprises a compressor, a condenser, and an evaporator located inside a housing. The air conditioner further comprises a cool air inlet and outlet and a warm air inlet and outlet. The air-conditioner has an axial evaporator fan and a radial condenser fan and the housing of the air-conditioner has an elongated shape where the end sections of the elongated air conditioner housing forms a top section and a bottom section, respectively. Other features of a portable air-conditioner are also disclosed.

A diaphragmatic elbow damper joining two angularly oriented channels and configured to seal the channels in the absence of fluid flow overcoming gravity and atmospheric pressure.