The present invention provides a foldably packed temperature adjustment fan, which comprises a water tank assembly, having a water storage cavity; and a shell assembly, mounted on a top of the water tank assembly, wherein the shell assembly comprises a plurality of side plate assemblies for surrounding and forming an airflow cavity and a top plate assembly, at least a part of the side plate assemblies are respectively utilized as a whole body and are detachably mounted on an edge of the top of the water tank assembly, and at least a part of the side plate assemblies can be completely accommodated in the water storage cavity after being detached. The present invention further provides a folding method of the foldably packed temperature adjustment fan. When the temperature adjustment fan of the present invention is used, its appearance is the same as that of a normal unit; during packing, a rear plate assembly, a left side plate assembly and a right side plate assembly can be completely accommodated in the water tank assembly, a front panel assembly does not need to be detached, and as long as the front panel assembly is turned over, fast folding is completed; and the package size is small, associated components are less, and logistics transportation is convenient.

The disclosure provides a multi-function ductless enclosure apparatus. Its main purpose is to be used as a paint spray booth to capture excess paint, pass it through filters with the use of a fan and then exhaust the ensuing clean air out, back into the room air. This booth is foldable and light weight and can be moved to a different location in minutes. It can also be transformed to serve many other applications with the use of a few accessories thereby saving the end user from having to have several booths (saving counter space) and also saving him from having to spend a lot of money buying many booths for different applications.

A dehumidification system for removing water vapors from an air is disclosed. The system includes a dehumidification core defining an air channel and at least one vapor channel separated from the air channel by a membrane to facilitate a removal of moisture from the air flowing through the air channel and is selectively permeable to water and water vapor and impermeable to air. The dehumidification system further includes a water ejector having a throat portion fluidly coupled to the vapor channels and adapted to create a relatively lower pressure of water vapor within the vapor channels than in the air channel The water ejector also includes an outlet portion disposed downstream of the throat portion and configured to increase the pressure of water to facilitate a condensation of the water vapors received from the vapor channels.

A heat exchange device for air cooling for conditioning and climate control systems for server rooms and the like, which comprises: an air/air heat exchanger, designed to be passed through by a primary air stream along a first trajectory from an intake region to an outflow region and by a secondary air stream along a second trajectory from a corresponding intake region to a corresponding outflow region, water dispensing elements adapted to wet the heat exchanger downward from above, elements of collecting the water that descends from the heat exchanger, a recirculation pump for returning the air-cooling water from the collection elements up to the dispensing elements arranged above the heat exchanger; the water dispensing elements comprise a plurality of nozzles arranged side by side, or rows of nozzles, which are adapted to dispense water with a flow-rate that decreases starting from the intake region for the primary air stream toward the outflow region of the heat exchanger.

An indirect evaporative cooling system with a core greatly reduced in size compared to conventional evaporative cooling systems The system has a heat exchanger core having heat exchange plates defining a plurality of wet air flow passages and a plurality of dry air flow passages. At least one fan drives air through the passages. The dry air passages have a small height and a short length, configured so that a substantially laminar airflow having a raised shear rate arises in the dry air passages, and so that a back pressure across a length of the dry air passages remains low.

Synthetic media pads configured to be arranged in a stack of an evaporative cooler for a gas turbine, wherein the synthetic media pads include high density synthetic media pads and low density synthetic media pads. The sides of the pads may have surface patterns, such as grooves and ridges, to provide support for the pads.

An extremum-seeking control system for a chilled water plant includes a feedback controller and an extremum-seeking controller. The feedback controller is configured to operate equipment of the chilled water plant to achieve a condenser water temperature setpoint. The equipment include at least one of a chiller compressor, a condenser water pump, and a cooling tower fan. The extremum-seeking controller is configured to provide the condenser water temperature setpoint to the feedback controller. The extremum-seeking controller is configured to determine an optimal value for the setpoint condenser water temperature setpoint by perturbing the condenser water temperature setpoint with a stochastic excitation signal, monitoring a power consumption of the equipment resulting from the perturbed condenser water temperature setpoint, estimating a gradient of the power consumption with respect to the condenser water temperature setpoint, and modulating the condenser water temperature setpoint to drive the estimated gradient to zero.

An evaporator includes a housing with a first end and a longitudinally opposite second end, a hydrophobic membrane arranged within the housing fluidly coupling the first end of the housing to the second end of the housing, and a hydrophilic surface. The hydrophilic surface is arranged within the housing between the first end and the second end of the housing and is spaced apart from the hydrophobic membrane to draw liquid water away from the hydrophobic hollow fiber membrane. Spacesuits and environmental control methods are also described.

A coaxial ventilator (20) exchanges atmosphere between parts of a building (22) that are at differing heights. The coaxial ventilator (20) includes an outer conduit (24) that extends from an upper end (42) thereof downward to a lower end (44) thereof. The outer conduit (24) surrounds an inner conduit (62) that extends substantially the entire length of the outer conduit (24). Both the outer and inner conduits (24, 62) are open at their respective upper ends (42, 66) and lower ends (44, 68). Temperatures of atmosphere both surrounding and within the outer conduit (24) and the inner conduit (62) induce an exchange of atmosphere between the coaxial ventilator (20) and surrounding atmosphere.

A coaxial ventilator (20) exchanges atmosphere between parts of a building (22) that are at differing heights. The coaxial ventilator (20) includes an outer conduit (24) that extends from an upper end (42) thereof downward to a lower end (44) thereof. The outer conduit (24) surrounds an inner conduit (62) that extends substantially the entire length of the outer conduit (24). Both the outer and inner conduits (24, 62) are open at their respective upper ends (42, 66) and lower ends (44, 68). Temperatures of atmosphere both surrounding and within the outer conduit (24) and the inner conduit (62) induce an exchange of atmosphere between the coaxial ventilator (20) and surrounding atmosphere.