Water-Enhanced Turbofan condenser sizing considering configuration and operating conditions

• DOI: 10.1017/aer.2024.158
• Publication Date: 2025-02-26T04:19:56Z
• Authors: P. Ziegler; C. Simson; T. Arzberger; A. Woitalka; F. Nöske; S. Kaiser; V. Gümmer
• Keywords: Turbofan; Condenser (optics)

Abstract The Water-Enhanced Turbofan is a promising aero engine propulsion concept that could reduce the climate impact of aviation significantly by combining conventional Joule/Brayton cycle with Clausius-Rankine steam cycle. One important component high on overall performance condenser, heat exchanger cooling core exhaust for water recovery. design conditions condenser have not been analysed from system perspective in previous studies. Therefore, these operating conditions, which can be decisive dimensioning are investigated present work. These include ambient temperature variations, different cruise altitudes, maximum thrust and contrail avoidance. A conceptual model set up Numerical Propulsion System Simulation (NPSS) framework, incorporating multi-point scheme. exchangers modelled using neural network surrogate model. results show trade-off between fuel burn cold size frontal area latter being an indication integrability. It shown temperatures pose challenge to design, necessitating consideration such new concepts based exchange environment. designed typical at 15K above standard atmosphere 35,000 ft altitude, enables sustained operations down 10,000 under day conditions. Additionally, complete segment mission flown 10K positive side effect sizing hot probability formation reduced because excess recovery colder