Power plant air cooled heat exchanger or condenser with pressurized gas entrained cooling liquid mister

A power plant air cooled condenser apparatus, comprising:

• an enclosure including therein:
• a heat exchange conduit for passage of steam turbine outlet steam that is to be cooled and condensed;
• a pressurized gas misting device for introducing a gas-entrained liquid cooling mist in heat transfer communication with the heat exchange conduit, the pressurized gas misting device including:
• a misting device housing, for passage of pressurized gas flow there through;
• a gas inlet in the misting device housing, for receipt of the pressurized gas flow;
• a cooling liquid inlet downstream of the gas inlet, for introducing cooling liquid in communication with the pressurized gas flow;
• an entrainment zone in communication with gas inlet and the cooling liquid inlet, for entraining the cooling liquid within the pressurized gas flow;
• a misting outlet downstream the entrainment zone, for dispersing gas entrained cooling fluid mist into the enclosure, the cooling fluid mist transferring heat from the steam turbine outlet steam through the heat exchange conduit;
• a pressurized compressed air gas supply coupled to the gas inlet;
• a cooling liquid water supply coupled to the cooling liquid inlet;
• and
• wherein the power plant air cooled condenser apparatus is downstream of a heat recovery steam generator (HRSG).

A method for cooling a heated fluid medium with an air cooled heat exchanger system, comprising:

• providing a liquid mist and air cooled heat exchanger system, including:
• an enclosure including therein:
• a heat exchange conduit for passage of a heated fluid medium that is to be cooled;
• wherein the heat exchange conduit is one of a gas turbine compressor bleed conduit and a power plant condensate conduit downstream of a HRSG,
• a pressurized gas misting device for introducing a gas-entrained liquid cooling mist in heat transfer communication with the heat exchange conduit, the pressurized gas misting device including:
• a misting device housing, for passage of pressurized gas flow there through;
• a gas inlet in the misting device housing, for receipt of the pressurized gas flow;
• a cooling liquid inlet downstream of the gas inlet, for introducing cooling liquid in communication with the pressurized gas flow;
• an entrainment zone in communication with the gas inlet and the cooling liquid inlet, for entraining the cooling liquid within the pressurized gas flow;
• a misting outlet downstream the entrainment zone, for dispersing gas entrained cooling fluid mist into the enclosure, the cooling fluid mist transferring heat from the heated fluid medium through the heat exchange conduit;
• a pressurized gas supply coupled to gas inlet;
• and
• a cooling liquid supply coupled to the cooling liquid inlet;
• circulating a heated fluid medium through the heat exchange conduit;
• introducing pressurized gas from the pressurized gas supply into the gas inlet;
• introducing cooling liquid from the cooling liquid supply into the cooling liquid inlet;
• and
• dispensing the gas entrained cooling fluid mist within the enclosure, thereby transferring heat from the heated fluid medium through the heat exchange conduit to the cooling fluid mist.