Two spool environmental control system

Details Two spool environmental control system Two spool environmental control system

1997-11-11

1999-03-30

Doerrler, William

Refrigeration

Air compressor, cooler and expander type

Motor-type expander

62 87, F25D 900

Patent

active

058874453

ABSTRACT:
A two spool environmental control system includes a low pressure spool subsystem having a low pressure turbine. A high pressure spool subsystem is in air flow communication with the low pressure spool subsystem, while the high pressure spool subsystem is capable of conditioning compressed air prior to the low pressure spool subsystem conditioning the compressed air. The high pressure spool subsystem includes a high pressure turbine which is mechanically operable independently of the low pressure turbine.

REFERENCES:
patent: 2697917 (1954-12-01), Mayer
patent: 3153916 (1964-10-01), Schuhmacher
patent: 4198830 (1980-04-01), Campbell
patent: 4312191 (1982-01-01), Biagini
patent: 5086622 (1992-02-01), Warner
patent: 5704218 (1998-01-01), Christians et al.

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