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US 4,827,733 AGranted
Indirect evaporative cooling system
AssigneeDinh Company, Inc.
InventorKhanh Dinh
Life of this patent
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AssigneeDinh Company, Inc.
InventorKhanh Dinh
Estimating the term…
An evaporative cooling system is disclosed which uses a heat pipe device comprising first and second heat exchangers to transfer heat from the space being cooled to an evaporative cooler. Evaporative cooling is produced by passing atmospheric air over wet pads and the first heat exchanger. Evaporation of water removes heat from the atmospheric air and from the first heat exchanger containing refrigerant vapor, causing condensation of a portion of the vapor. The condensate moves to the second heat exchanger which contains liquid refrigerant. Room air is passed through the second heat exchanger and gives up heat to vaporize the liquid refrigerant. Vaporized refrigerant moves to the first heat exchanger where it is condensed as previously described. The cooled atmospheric air is then used to cool the condenser of a vapor compression machine, the evaporator of which is located in the flow path of the room air downstream of the heat pipe, further cooling the room air to desired conditions. Evaporative coolers using heat pipe devices and arranged in multi-stage configurations to produce greater cooling effects are also disclosed.
In an indirect evaporative cooling system for cooling air in an enclosed space, a heat transfer system comprising first and second heat exchangers, said first and second heat exchangers in turn comprising a heat pipe, said heat exchangers being filled with refrigerant, at least a portion of the refrigerant in the first heat exchanger being in a vapor state and at least a portion of the refrigerant in said second heat exchanger being in a liquid state under equilibrium conditions, a source of water, a source of outside air, means for circulating water and outide air from said sources over said first heat exchanger whereby at least some of the water is evaporated and heat is transferred from the refrigerant to the evaporating water and means for circulating air from said enclosed space through said second heat exchanger whereby to transfer heat from the air in the enclosed space to the refrigerant.
In an indirect evaporative cooling system for cooling air in an enclosed space, a heat transfer system comprising first, second, third and fourth heat exchangers, said first and second heat exchangers in turn comprising a first heat pipe and said third and fourth heat exchangers comprising a second heat pipe, said heat exchangers being filled with a refrigerant and at least a portion of the refrigerant in the first and third heat exchangers being in a vapor state and at least a portion of the refrigerant in said second and fourth heat exchangers being in a liquid state under equilibrium conditions, a source of water, a source of outside air and means for circulating water and outide air from said sources over said first and third heat exchangers whereby at least some of the water is evaporated and heat is transferred from the refrigerant to the evaporating water and means for circulating air from said enclosed space through said second heat exchanger whereby to transfer heat from the air in the enclosed space to the refrigerant.
An apparatus, comprising:
Dependencies are inferred from the claim text.