Systems and methods for controlling conditions in an enclosed space, such as a data center, or for providing cooling to a device, can include using a Liquid-to-Air Membrane Energy Exchanger (LAMEE) as an evaporative cooler. The LAMEE or exchanger can cool water to the outdoor air wet bulb temperature in a cooling system disposed outside of the enclosed space or device. The reduced-temperature water can be delivered to the enclosed space or device or can cool a coolant that is delivered to the enclosed space or device. The air in the enclosed space, or one or more components in the enclosed space, can be cooled by delivering the reduced-temperature water or coolant to the enclosed space, rather than moving the supply air from the enclosed space to the cooling system. In an example, the cooling system can include one or more cooling coils, upstream or downstream of the LAMEE.

Systems and methods for controlling conditions in an enclosed space, such as a data center, or for providing cooling to a device, can include using a Liquid-to-Air Membrane Energy Exchanger (LAMEE) as an evaporative cooler. The LAMEE or exchanger can cool water to the outdoor air wet bulb temperature in a cooling system disposed outside of the enclosed space or device. The reduced-temperature water can be delivered to the enclosed space or device or can cool a coolant that is delivered to the enclosed space or device. The air in the enclosed space, or one or more components in the enclosed space, can be cooled by delivering the reduced-temperature water or coolant to the enclosed space, rather than moving the supply air from the enclosed space to the cooling system. In an example, the cooling system can include one or more cooling coils, upstream or downstream of the LAMEE.

A new thermal system utilizing removable heat pump modules to decrease servicing time and complexity, increase the range of refrigerants safely usable, increase the efficiency of many thermal systems, and serve new industrial thermal needs. Safe use of potentially toxic and flammable refrigerants is enabled by enclosing the heat pump modules within a hermetic enclosure with multiple overpressure safeties employed. The tool necessary for servicing these thermal systems without any refrigerant leakage is included.

A ventilation system in accordance with the present disclosure includes a housing and a core unit arranged in the housing. A fresh air inlet, an exhaust air inlet, a fresh air outlet, and an exhaust air outlet are arranged on the housing. The core unit is arranged between the inlets and outlets to transfer heat and/or humidity between fresh air and exhaust air flowing through the ventilation system. The exhaust air flows through ducting to an exhaust port in a wall of a building structure.

A dedicated outdoor air system and method that is capable of operating over a broader spectrum of conditions. The HVAC system of the present invention utilizes a heating means positioned within the return air passageway in order to optimize the regeneration of the desiccant wheel and energy recovery device. By positioning a heating means upstream of the regeneration side of the desiccant wheel, the system is capable of providing supply air having low dew points to the enclosed space while still providing improved energy efficiency over conventional HVAC systems.

A climate control device includes a radiant heater for radiating heat and a porous material attached to the radiant heater. The porous material desorbs a plurality of water molecules, in response to the porous material receiving heat from the radiant heater and raising a temperature of the water molecules in the porous material to a boiling temperature threshold. The porous material adsorbs the water molecules in response to the temperature of the water molecules falling below the boiling temperature threshold.

A closure unit for a ventilation device having at least two pivotally arranged flaps for closing a respective ventilation channel. The two flaps can be moved by a common shaft which defines a pivot axis. The two flaps are thus positively coupled and can be actuated simultaneously by a single motor. The closure unit allows the use of two heat exchangers operated in parallel without an additional bypass channel.

An evaporative cooling system includes an evaporative cooler liquid-to-air membrane energy exchanger (LAMEE), a first liquid-to-air heat exchanger (LAHE), and a cooling fluid circuit. The evaporative cooler LAMEE is disposed within a scavenger air plenum that is configured to channel a scavenger air stream. The first LAHE is disposed within a process air plenum that is configured to channel a process air stream. The cooling fluid circuit is configured to circulate an evaporative cooling fluid between the evaporative cooler LAMEE and the first LAHE. The evaporative cooler LAMEE is configured to utilize the scavenger air stream to evaporatively cool the cooling fluid. The first LAHE is configured to receive the cooling fluid from the evaporative cooler LAMEE and to allow the cooling fluid to absorb heat from the process air stream to cool the process air stream.

An evaporative cooling system includes an evaporative cooler liquid-to-air membrane energy exchanger (LAMEE), a first liquid-to-air heat exchanger (LAHE), and a cooling fluid circuit. The evaporative cooler LAMEE is disposed within a scavenger air plenum that is configured to channel a scavenger air stream. The first LAHE is disposed within a process air plenum that is configured to channel a process air stream. The cooling fluid circuit is configured to circulate an evaporative cooling fluid between the evaporative cooler LAMEE and the first LAHE. The evaporative cooler LAMEE is configured to utilize the scavenger air stream to evaporatively cool the cooling fluid. The first LAHE is configured to receive the cooling fluid from the evaporative cooler LAMEE and to allow the cooling fluid to absorb heat from the process air stream to cool the process air stream.

A system and method to control environmental parameters of predefined zones within a structure. An embodiment of the system uses damper assemblies that are entirely wireless as a result of energy capturing devices which convert air flow within the HVAC system ductwork into electrical current and a wireless control module that remove the need for hard-wiring for power or control. Still further, an embodiment of the system uses wireless components to monitor the environmental parameters of a structure's zones, process and communicate necessary zone adjustments, and actuate system components.