CONCEPTUAL DESIGN OF AEROPROPULSION ENGINE HEAT EXCHANGERS PART 3: PRINTED CIRCUIT HEAT EXCHANGER

A major challenge which emerged in developing innovative approaches for significantly reducing the aviation Greenhouse Gas (GHG) emissions was the design of a compact heat exchanger. As a part of the FAA program under US Department of Transportation Contract Number DTRT57-11-P-80083, an LP Turbine Exhaust Driven (TED-T) secondary cycle was proposed for contrail mitigation as well as an increment of 4-5% pts in overall powerplant efficiency. It was identified that a compact heat exchanger is a critical component of TED-T. In this series of papers, Paper #1 presented some of the existing advanced compact heat exchanger (HEX) technologies along with parametric analysis of a baseline configuration. A 1-D steady state code was developed for heat transfer calculations. In this paper, a similar parametric study is presented for a Printed Circuit Heat Exchanger (PCHE) operating at the proposed TED-T cycle conditions.