Refrigeration supply temperatures of currently produced air cycle environmental control systems must be maintained above 32 F to precent icing problems in water separators, ducts, and heat exchangers. However, several new ECS cycles capable of usefully utilizing subfreezing refrigeration potential by chilling recirculation air are now being developed. These candidate schemes simultaneously eliminate icing problems, provide water separation, and usefully cool cabin recirculation air, while efficiently utilizing supply pressures higher than those which would cause ice in conventional systems. The ability to utilize subfreezing refrigeration potential to chill recirculation air results in a significant reduction in the amount of compressed air required to power the cycle, and a corresponding decrease in power and fuel consumption chargeable to the ECS. (Wassmann)
Chilled recirculations ECS for aircraft
Gekuehlte Lueftungsrueckfuehrung fuer Flugzeuge
ASME-Papers ; 1-7
1979
7 Seiten, 13 Bilder, 2 Quellen
Conference paper
English
European Patent Office | 2017
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