elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Simulation and Optimization of Zero Emission Hydrogen-Based Powertrains Using EcosimPro

Haemisch, Jan and Lindner, Daniela (2022) Simulation and Optimization of Zero Emission Hydrogen-Based Powertrains Using EcosimPro. 2nd International Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions Engineering (FAR), 2022-06-19 - 2022-06-23, Heilbronn.

[img] PDF - Only accessible within DLR
1MB

Abstract

The transportation and especially aviation sectors climate impact could be substantially reduced by switching its fuel to liquid hydrogen. However, due to its low boiling point (~20 K), it is a challenging fuel to handle. One of the most critical aspects is the evaporation of cryogenic liquid due to heat input from the environment, the so-called boil-off. To detect and rate all sources of boil-off losses along the liquid hydrogen power train system, simulations were performed with EcosimPro, a software tool that is widely used to simulate propellant lines in space transportation. The model that is simulated consists of a small liquid hydrogen tank an electrical heater and a fuel cell model. The dimension relates to a small aircraft / air taxi or an APU replacement for a medium sized aircraft. The scope of simulations incorporates the fueling of the lH2 tank and various mission scenarios such as long taxiing and waiting times as well as high power demands. The results show that boil-off losses during fueling are one of the most significant sources of losses along the liquid hydrogen pathway. These boil-off losses can substantially be reduced e.g. by subcooling the liquid hydrogen or by pre-cooling the tank with liquid nitrogen before the filling process. The smaller the tank, the higher are potential benefits, therefore mass savings of up to 50% of total fuel mass are possible. An experimental demonstrator that is suitable to validate the numerical simulations is currently under development. First results with liquid nitrogen as a replacement for liquid hydrogen are expected until end of 2022.

Item URL in elib:https://elib.dlr.de/190075/
Document Type:Conference or Workshop Item (Poster)
Title:Simulation and Optimization of Zero Emission Hydrogen-Based Powertrains Using EcosimPro
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Haemisch, JanUNSPECIFIEDhttps://orcid.org/0000-0001-9463-1740UNSPECIFIED
Lindner, DanielaUNSPECIFIEDhttps://orcid.org/0000-0002-1412-9513UNSPECIFIED
Date:June 2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:liquid Hydrogen, Boil-off, EcosimPro
Event Title:2nd International Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions Engineering (FAR)
Event Location:Heilbronn
Event Type:international Conference
Event Start Date:19 June 2022
Event End Date:23 June 2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Applied Hydrogen Technologies
Deposited By: Haemisch, Jan
Deposited On:15 Nov 2022 07:45
Last Modified:24 Apr 2024 20:51

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.