First, a system for providing liquid refrigerant subcooling (10), subsequent to the subcooling accomplished by the primary condenser of an air conditioner, refrigeration or heat pump system, by means of evaporative cooling utilizing the condenser water of said air conditioner, refrigeration or heat pump system and/or some other water supply to wet the surface of the subcool heat exchanger and then passing the cold, dry building exhaust air (13) required for good indoor air quality across the wetted surface of the subcool heat exchanger or by using building exhaust air only to conductively subcool.

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Meanwhile some detailed numerical researches are done on the influence to the aerodynamic field throughout changing magnitude of the primary air and the secondary air, adopting homocentric two tangential circles, tangentially-fired in number one and number three corner face-fired in number two and number four corner, changing the air distribution of the secondary air and the reverse swirl of upper secondary air, Which provide the theoretical basis for boiler design, optimal operation, renovation etc.

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Bleed air is extracted from the high pressure compressor for the following system: Air-conditioning Cabin pressurizatin Wing and engine inlet cowl anti-icing Hydraulic tank pressurization Potable water tank pressurization Fan air is used as cooling air for the precooler to limit the temperature of the bleed air in the pneumatic manifold.

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The function of air ejector: The air in the shell must be extracted by air ejector since the commencement of condenser due to the vacuum condition for condenser. During the operation of condenser, the air carried by exhaust steam of steam turbine and the air leaked from imperfect vacuum system must be continuously extracted so as to maintain the condenser vacuum.

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