Which component is immediately before the Turbine in the PACK air flow path?

Which component is immediately before the Turbine in the PACK air flow path?

• A. Condenser
• B. Water Extractor
• C. ReHeater
• D. PreCooler

Answer: (B)

Moisture control and the sequence of PACK components before the turbine is the key idea. The air leaving the PreCooler has cooled significantly and may still carry moisture. The Water Extractor is placed right before the turbine to remove condensate and any remaining water from the air flow, ensuring the air entering the turbine is dry. This helps prevent ice formation on turbine components and reduces moisture-related issues in the expansion stage, which improves the efficiency and reliability of the PACK system. The other stages—PreCooler lowers the temperature with ram air, the Condenser handles further moisture removal and heat rejection, and the Reheater adjusts the temperature after initial cooling—work together to condition the air, but the immediate predecessor to the turbine specifically is the Water Extractor.

Moisture control and the sequence of PACK components before the turbine is the key idea. The air leaving the PreCooler has cooled significantly and may still carry moisture. The Water Extractor is placed right before the turbine to remove condensate and any remaining water from the air flow, ensuring the air entering the turbine is dry. This helps prevent ice formation on turbine components and reduces moisture-related issues in the expansion stage, which improves the efficiency and reliability of the PACK system. The other stages—PreCooler lowers the temperature with ram air, the Condenser handles further moisture removal and heat rejection, and the Reheater adjusts the temperature after initial cooling—work together to condition the air, but the immediate predecessor to the turbine specifically is the Water Extractor.