Patent ID: 9623974
Date: 2017-04-18
CPC Classifications: B64D,F25B,Y02T

Claim:
1. An environmental control system comprising: a turbomachine assembly comprising: a first valve configured to split said compressed air stream into a first compressed air stream and a second compressed air stream; a heat exchanger positioned to cool said first compressed air stream and output a cooled air stream; a second valve positioned to receive said cooled air stream and split said cooled air stream into a first cooled air stream and a second cooled air stream, wherein said first cooled air stream is expanded in said turbine to produce an expanded air stream, and wherein said expanded air stream is combined with said second compressed air stream and said second cooled air stream to provide a combined air stream, said combined air stream having a temperature and a flow rate; and a controller configured to communicate control signals to said compressor, said motor, said first valve and said second valve to control said temperature and said flow rate of said combined air stream.