US 12,330,796 B2
Pack management system for environmental control system
Giusi Quartarone, Mayfield (IE); Lance R. Bartosz, Granby, MA (US); and Catherine Thibaud, South Windsor, CT (US)
Assigned to UNITED TECHNOLOGIES RESEARCH CENTRE IRELAND, Cork (IE)
Filed by COLLINS AEROSPACE IRELAND, LIMITED, Cork (IE)
Filed on Jan. 16, 2024, as Appl. No. 18/413,898.
Application 18/413,898 is a division of application No. 16/719,480, filed on Dec. 18, 2019, granted, now 11,897,617.
Claims priority of application No. 19203689 (EP), filed on Oct. 16, 2019.
Prior Publication US 2024/0150025 A1, May 9, 2024
Int. Cl. B64D 13/06 (2006.01)
CPC B64D 13/06 (2013.01) [B64D 2013/0688 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method of controlling an environment control system comprising:
apportioning with a pack management system, an amount of air to be distributed by the system between one or more of two or more available air conditioning packs based on the total amount of air to be distributed and the operating efficiencies of the packs;
wherein, depending on the predetermined amount of conditioned air, and based on the respective operating efficiencies of the two or more air conditioning packs relative to their maximum operating efficiencies, apportioning includes apportioning the predetermined amount of conditioned air unequally between the two or more air conditioning packs such that one of the two or more air conditioning packs provides a greater proportion of the predetermined amount of conditioned air than the other/another of the two or more air conditioning packs;
wherein the pack management system apportions by solving an optimization problem:

OG Complex Work Unit Math
Where:
ηi is the efficiency of the i-th pack;
mi is an optimization variable that corresponds to the inlet external airflow to the i-th pack; and
mTOT is the total external mass air flow.