Patent ID: 9657648
Date: 2017-05-23
CPC Classifications: B64D,F02C,Y02T

Claim:
1. An environmental air conditioning system for conditioning airflow path compressed air for supply as conditioned air, the system comprising: an airflow path comprising a compressor that receives the airflow path compressed air, a first heat exchanger that receives and cools air from the compressor, a first turbine that receives air from the heat exchanger and discharges said air as conditioned air; a second turbine that receives compressed air and discharges it as exhaust; and a power transfer path that transfers power output from the first turbine and power output from the second turbine to the compressor, wherein the system is configured to operate in a first mode in which power is transferred from the second turbine to the compressor when the first turbine does not provide sufficient power for the system to deliver conditioned air at a specified parameter, and a second mode in which power is not transferred from the first turbine to the compressor when the first turbine provides sufficient power for the system to deliver conditioned air at the specified parameter.