A liquid desiccant air conditioning system comprises an energy exchange unit comprising a sump and a plurality of media pads positioned above the sump, first, second, and third desiccant outlets fluidly connected to the sump, and at least one retractable gate positioned above the sump, configured to partition the sump into at least first and second compartments, wherein the first compartment is fluidly connected to the first desiccant outlet and the second compartment is fluidly connected to the second desiccant outlet, and wherein effective volumes of the first and second compartments can be modified by opening and closing the at least one retractable gate. A method of controlling desiccant circulation in a liquid desiccant air conditioning system is also described.

In a construction method of an air conditioning system, the respective rooms are provided with air intake sections 9a to 9d, 18a to 18d which spout air sent from blowers 40a to 40d, 41a to 41d, an exhaust section 52 which forms discharged air current directed from the respective rooms toward the return compartment is provided between the respective rooms and the return compartment, and the plurality of blowers 40a to 40d, 41a to 41d and at least one air conditioner are disposed in the return compartment. Air discharged from the plurality of rooms in the building 1 by the air conditioner 30b operated by the return compartment is adjusted in temperature and moisture in the return compartment, and wind is sent into the plurality of rooms in the building 1 by the blowers 40a to 40d, 41a to 41d, and air conditioning in the building 1 can be performed.

A liquid desiccant air conditioning system comprises an energy exchange unit comprising a sump and a plurality of media pads positioned above the sump, first, second, and third desiccant outlets fluidly connected to the sump, and at least one retractable gate positioned above the sump, configured to partition the sump into at least first and second compartments, wherein the first compartment is fluidly connected to the first desiccant outlet and the second compartment is fluidly connected to the second desiccant outlet, and wherein effective volumes of the first and second compartments can be modified by opening and closing the at least one retractable gate. A method of controlling desiccant circulation in a liquid desiccant air conditioning system is also described.

An air conditioning system includes an air conditioning portion configured to condition a volume of air flowing there-through and an exhaust portion configured to exchange heat with the air conditioning portion through a working fluid. A portion of the volume of air exiting the air conditioning portion is mechanically diverted into the exhaust portion.

A partition member for total heat exchange element (14) includes an ultrafine fiber portion (17) on a porous sheet (18). The ultrafine fiber portion (17) is impregnated with or coated with a moisture permeable substance (21), and water-insolubilized.

A partition member for total heat exchange element (14) includes an ultrafine fiber portion (17) on a porous sheet (18). The ultrafine fiber portion (17) is impregnated with or coated with a moisture permeable substance (21), and water-insolubilized.

An energy efficient HVAC system. The system provides a bypass air supply duct, an air handler having a bypass air supply circuit, and an air supply unit that utilize return air as a source of heat that would otherwise need to be provided by a heating coil if the air, cooled sufficiently to service interior zones of a building, is too cold for servicing perimeter zones of the building, as is typically the case when the outside air temperature is low.

In an air conditioning and sterilization system, air supply ports and exhaust ports are provided to rooms of a building, respectively, air supply pipes and exhaust pipes are connected to the air supply ports and the exhaust ports, an air conditioning room is between the air supply pipes and the exhaust pipes to adjust temperature and humidity of an air, and the air is circulated in each of the rooms. The air conditioning room includes ventilation means that introduces external air into the air conditioning room, sterilization means that irradiates the air inside the air conditioning room with an ultraviolet ray having a dominant wavelength of 254 nm to sterilize the air, and a blower that supplies the sterilized air to each of the rooms and discharges the air from the exhaust ports by making each room have a positive pressure and the air conditioning room have a negative pressure.

In an air conditioning and sterilization system, air supply ports and exhaust ports are provided to rooms of a building, respectively, air supply pipes and exhaust pipes are connected to the air supply ports and the exhaust ports, an air conditioning room is between the air supply pipes and the exhaust pipes to adjust temperature and humidity of an air, and the air is circulated in each of the rooms. The air conditioning room includes ventilation means that introduces external air into the air conditioning room, sterilization means that irradiates the air inside the air conditioning room with an ultraviolet ray having a dominant wavelength of 254 nm to sterilize the air, and a blower that supplies the sterilized air to each of the rooms and discharges the air from the exhaust ports by making each room have a positive pressure and the air conditioning room have a negative pressure.

An air treatment system (100) for treating air of an inhabited space (1). The air treatment system has an air preparation module (3) and a cryogenic module (5). The air preparation module (3) is configured to receive air extracted from the inhabited space (1) and is configured to increase the pressure of the extracted air so as to increase the density and decrease the moisture content of the extracted air, thereby converting the extracted air into dry air. The cryogenic module (5) is coupled to the air preparation module (3) to receive the dry air and is configured to decrease a temperature of the dry air such that at least part of at least one component of the dry air is separated and removed from the dry air thereby converting the dry air into treated air for delivery into the inhabited space (1).