摘要:
A liquid-to-air membrane energy exchanger configured to exchange energy between air transmitted through a plurality of air channels and the liquid transmitted through a plurality of liquid panels. The energy exchanger comprises a housing defining a cavity; a plurality of liquid panels disposed in the cavity; and a plurality of air channels disposed in the cavity. Each of the liquid panels comprises a support frame and first and second semi-permeable membranes secured to the first and second sides of the support frame. The support frame has a plurality of liquid circuits through which a liquid is configured to flow. Each of the plurality of liquid circuits comprises an inlet channel connected to an outlet channel. Each of the plurality of air channels comprises a membrane support assembly configured to support the first and second semi-permeable membranes.
摘要:
An evaporative cooling system includean evaporative cooler liquid-to-air membrane energy exchanger (LAMEE), a cooling fluid circuit, and an air-to-air heat exchanger (AAHE). The evaporative cooler LAMEE is disposed within a scavenger air plenum that is configured to channel a scavenger air stream, is configured to receive a scavenger air supply stream through an air inlet and to discharge a scavenger air exhaust stream through an air outlet, and is further configured to receive an evaporative cooling fluid through a fluid inlet and to evaporatively cool the cooling fluid by allowing the cooling fluid to evaporate into the scavenger air stream. The cooling fluid circuit is configured to circulate the cooling fluid between the evaporative cooling LAMEE and a first liquid-to-air heat exchanger (LAHE). The first LAHE is disposed within a process air plenum that is configured to channel a process air stream, and 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. The air-to-air heat exchanger (AAHE) is disposed within the scavenger air plenum downstream of the evaporative cooler LAMEE in a direction of flow of the scavenger air stream. The AAHE is configured to receive the scavenger air exhaust stream and to allow the scavenger air exhaust stream to absorb heat from at least one of the process air stream upstream of the first LAHE in a direction of flow of the process air stream or the scavenger air supply stream upstream of the evaporative cooler LAMEE to cool the process air stream or the scavenger air supply stream, respectively. The evaporative cooler LAMEE is configured to direct the cooling fluid and the scavenger air stream through separate channels divided by membrane separation layers, the membrane separation layers including a semi-permeable membrane thereon.
摘要:
An energy exchange system is configured to exchange heat and moisture between a first fluid and a second fluid. The energy exchange system comprises first and second membranes. A fluid channel has a width defined between the first and second membranes, the fluid channel configured to allow the first fluid to flow therethrough, the first fluid contacting the first and second membranes to exchange energy between the first fluid and the second fluid on an opposing side of each of the first and second membranes, and the first and second membranes separating the first fluid from the second fluid. A membrane support assembly is positioned within the fluid channel. The membrane support assembly comprises a plurality of planar struts. A width of at least one of the planar struts is equal to the width of the fluid channel, the planar struts configured to span between the first and second membranes and support the fluid channel. A plurality of turbulence promoters is connected to and integrally molded and formed with the plurality of planar struts as a single piece. Each of the plurality of turbulence promoters has a central longitudinal axis that is perpendicular to a central longitudinal axis of each planar strut. A width of at least one of the turbulence promoters is less than the width of the fluid channel. The plurality of turbulence promoters is configured to promote fluid turbulence within the fluid channel, wherein the fluid turbulence within the fluid channel enhances transfer of heat and moisture between the fluid channel and the first and second membranes. The turbulence promoters include an asymmetrical shape relative to the central longitudinal axis of the turbulence promoter, the asymmetrical shape having a semi-elliptical shape at a leading end of the turbulence promoter.
摘要:
Certain Embodiments provide an energy exchange system that includes a supply air flow path, an exhaust air flow path, an energy recovery device disposed within the supply and exhaust air flow paths, and a supply conditioning unit disposed within the supply air flow path. The supply conditioning unit may be downstream from the energy recovery device. Certain embodiments provide a method of conditioning air including introducing outside air as supply air into a supply air flow path, pre-conditioning the supply air with an energy recovery device, and fully-conditioning the supply air with a supply conditioning unit that is downstream from the energy recovery device.
摘要:
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.
摘要:
An energy exchange system is provided that may include a heater configured to be disposed within a supply air flow path. A first pre-heater is configured to be upstream from the heater within the supply air flow path and configured to pre- heat the supply air with a first liquid that circulates through the first pre-heater. A boiler may be operatively connected to the first pre-heater and configured to heat the first liquid. The system may also include a second pre-heater configured to be upstream from the heater within the supply air flow path. A heat transfer device may be operatively connected to the heater and the second pre-heater. The heat transfer device is configured to receive flue gas from the heater and transfer heat from the flue gas to a second liquid within the heat transfer device.
摘要:
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.