Compact heat exchangers for hydrogen-fueled aero engine intercooling and recuperation
Artikel i vetenskaplig tidskrift, 2024

This study investigates the application of compact heat exchangers for the purpose of intercooling and recuperation systems for short-to-medium range aircraft equipped with hydrogen-fueled turbofan engines. The primary objective is to assess the potential effects of engine-integrated compact heat exchangers on fuel consumption and emissions. The paper encompasses the conceptual design of integrated heat exchangers and associated ducts, followed by aerodynamic optimization studies to identify suitable designs that minimize air-side pressure losses and ensure flow uniformity at the inlet of the high-pressure compressor. Pressure drop correlations are then established for selected duct designs and incorporated into a system-level performance model, allowing for a comparison of their impact on specific fuel consumption, NOx emissions, and fuel burn against an uncooled baseline engine. The intercooled-recuperated engine resulted in the most significant improvement in take-off specific fuel consumption, with a reduction of up to 7.7% compared to the baseline uncooled engine, whereas the best intercooled engine resulted in an improvement of about 4%. Furthermore, the best configuration demonstrated a decrease in NOx emissions by up to 37% at take-off and a reduction in mission fuel burn by 5.5%. These enhancements were attributed to reduced compression work, pre-heating of the hydrogen fuel, and lower high-pressure compressor outlet temperatures.

Recuperation

Heat exchangers

CFD

Emissions

Hydrogen

Cryogenics

Intercooling

Författare

Alexandre Capitao Patrao

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Isak Jonsson

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Carlos Xisto

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Anders Lundbladh

Chalmers, Mekanik och maritima vetenskaper

Tomas Grönstedt

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Applied Thermal Engineering

1359-4311 (ISSN)

Vol. 243 122538

Pathways for a sustainable introduction of hydrogen into the aviation sector

Chalmers, 2022-01-01 -- 2023-12-31.

Enabling cryogenic hydrogen-based CO2-free air transport (ENABLEH2)

Europeiska kommissionen (EU) (EC/H2020/769241), 2018-09-01 -- 2021-08-31.

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Ämneskategorier

Rymd- och flygteknik

Energiteknik

Farkostteknik

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

DOI

10.1016/j.applthermaleng.2024.122538

Mer information

Senast uppdaterat

2024-06-25