Switchable heat exchanger configuration for air cycle cooling ap

Details Switchable heat exchanger configuration for air cycle cooling ap Switchable heat exchanger configuration for air cycle cooling ap

1992-09-16

1994-05-10

Capossela, Ronald C.

Refrigeration

Processes

Reducing pressure on compressed gas

62172, 62402, F25B 900

Patent

active

053097246

ABSTRACT:
In a normal mode, a primary heat exchanger for heated bleed airflow is situated upstream of an aircraft air conditioner compressor. A secondary heat exchanger is located downstream of the compressor. In response to hot and humid environmental conditions, three-way switching valves reposition the primary heat exchanger downstream of the compressor. The result will be the reduction of heat exchange exit temperature, which translates into lower turbine inlet and outlet temperatures at satisfactory airflow rates.

REFERENCES:
patent: 3878692 (1975-04-01), Steves
patent: 4312191 (1982-01-01), Biagini
patent: 4553407 (1985-11-01), Rannenberg
patent: 5086625 (1992-02-01), Momose et al.

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