A dehumidifier/cooling apparatus for use in a room having an elevated temperature and/or humidity is provided which utilizes the natural coolness of tap water to condense water vapor from the air or merely cool the air. The tap water line is diverted into a heat exchanger upstream of a hot water heater to dehumidify and/or cool the air in the room the air and remove the latent heat given off during condensation to cool and/or dehumidify the room air and to pre-heat the water entering the hot water heater. An air moving device powered solely by water moving through the tap water line directs a flow of air through the heat exchanger.

Herein is detailed a 3-rotor drying system (30,40,50) for producing technical air having a very low dew point comprising three rotary desiccant dryers (2,21,22), each rotary desiccant dryer (2,21,22) comprising a drying sector (2a,21a,22a) and a regeneration sector (2b,21b,22b), the rotary desiccant dryers (2a,21a) arranged in sequence and sharing a common regeneration-air flow path (9) for passing regeneration-air through the respective regeneration sectors (2a,21b,22b) of the rotary desiccant dryers (2,21,22) and a common intake-air flow path (6,7) for passing intake-air through the respective drying sectors (2a,21a,22a) of the rotary desiccant dryers (2,21,22) for dehumidifying the intake-air to product-air having a very low dew point.

Methods and apparatus for latent heat extraction of an air stream eliminates the need for recirculation pumps and uses the pressure in the chilled water supply to the primary chilled water cooling coil to motivate the water through the precooling and reheat coils of a run-around system. The energy transfer lowers the air temperature entering the primary coil so that the primary coil can provide a greater amount of latent heat extraction from the air stream. Both the precooling and the primary coils can share the primary cooling function for periods of peak cooling demand when precooling is not required thereby reducing the required primary cooling coil size. Enhancements combine the functions of a precooling coil, a primary cooling coil, and a reheat coil into precooling, cooling, and reheat coil portions in a single integrated housing comprising the coil portions sharing the housing.

Air humidity condensing and potabilizing machine consisting of a compression thermodynamic cycle with forced ventilation so that the ambient air with a certain temperature and humidity is forced to pass through a compression evaporator whose walls are cold, and on which a percentage of its humidity is condensed, this water being collected and sent to a double purification circuit with sediment filters, ultraviolet lamps, carbon filter and mineralization to adapt it to human consumption, the machine having different systems that optimize the production of water to reduce its energy and economic cost, as well as devices to improve the quality of the air entering the machine and the water obtained in different environments and circumstances of use.

A humidity control device includes a condenser and a water absorber-drainer. The condenser has a first region and a second region. The first region is a region having hydrophilicity and where moisture is condensed. The condensed moisture is moved by gravity to the water absorber-drainer via the second region. The water absorber-drainer includes a temperature control member and has a water absorption surface and a water drainage surface. When a temperature of the water absorber-drainer is in a first temperature region, the water absorber-drainer absorbs through the water absorption surface the moisture moved from the condenser. When the temperature of the water absorber-drainer is controlled to be in a second temperature region by an operation of the temperature control member, the water absorber-drainer drains the absorbed moisture through the water drainage surface.

Various embodiments provide a make-up air unit, comprising a first air inlet defining a portion of a first path and a portion of a second path; a second air inlet defining a third path that joins with the first path; a dehumidification unit disposed within the first path; an air conditioner with a portion of the air conditioner disposed within the first path downstream of where the third path joins the first path, and a portion of the air conditioner disposed within the third path; a first air outlet where the first path exits the make-up air unit; and a second air outlet wherein the second path exits the make-up air unit; wherein the air conditioner is disposed on a stand; wherein the dehumidification unit is disposed below the air conditioner; and wherein the first path is isolated from the third path.

A dehumidifier is provided. The dehumidifier may include a case having an air intake opening and an air discharge opening, an evaporator arranged inside the case and having evaporating fins coupled to evaporating tubes, a condenser arranged inside the case spaced apart from the evaporator, a fan that flows air in a direction from the evaporator to the condenser, and a heat pipe assembly positioned in front of and behind the evaporator in the air flow direction spaced apart from the evaporator. The heat pipe assembly may include heat pipes and heat-conducting fins each having a heat pipe coupling hole formed therein to be coupled to the respective heat pipe. Heat pipes may include heat-absorbing pipe portions positioned in front of the evaporator, heat-dissipating pipe portions positioned between the evaporator and the condenser, and connecting pipe portions that connect the heat-absorbing pipe portion to the heat-dissipating pipe portion, respectively.

A Variable Refrigerant Flow (VRF) dehumidification system. The system has at least one condenser module in fluid communication with one or more indoor air handlers. At least one evaporator coil is in fluid communication with the indoor air handlers and at least one reheat/reclaim coil. The evaporator and reheat/reclaim coils are also in communication with the condenser module. A plurality of electronic expansion valves (EEVs) are in fluid communication with the indoor air handlers. A plurality of sensors is disposed in the system and are in communication with at least one VRF dehumidification system controller. In one embodiment, a logic is stored in a non-transitory computer readable medium that, when executed by one or more processors, causes the VRF dehumidification system to monitor the data input from the plurality of sensors and regulates the capacity of the VRF dehumidification system needed to maintain a set dew point parameter.

An air purifier apparatus, comprising: a housing comprising an air intake opening to an external environment outside the housing; a plant pot disposed downstream of the air intake, configured to hold soil, and being perforated so as to enable contact between at least some air outside the plant pot and at least some of the soil inside the plant pot; an air purification filter disposed downstream of the plant pot; a fan disposed downstream of the air purification filter; an air outlet disposed downstream of the fan and located in a first compartment of the housing; a dehumidifier disposed in a second compartment of the housing separate from the first compartment and configured to extract water from air interacting with the dehumidifier, the second compartment having an air exchange perforation opening to the external environment; a watering system, configured to circulate water located inside the housing to the plant pot.

A dehumidification system includes an evaporator, a condenser positioned next to the evaporator, and a drain pan including a mist eliminator. The drain pan is disposed at least partially below the evaporator and the condenser. The drain pan at least includes a basin disposed at least partially below the evaporator. The basin includes a sloped bottom, a first rib disposed on the sloped bottom, a second rib parallel to the first rib and including a central gap, a third rib positioned between the first rib and the second rib, and an angled rib attached to the second rib. The third rib is parallel to and shorter than the first rib. The third rib is configured to at least partially block the central gap of the second rib. The angled rib is inclined towards the third rib and configured to change a velocity vector of the air flowing through the drain pan. The mist eliminator is configured to remove water droplets from the air.