Autor bzw. Ersteller | Jordan, Thomas |
---|---|
Mitwirkende | Friedrich, Andreas; Veser, Anke; Kotchourko, Natalie |
Schlagwörter | Hydrogen safety, cryogenic, release, liquid hydrogen, blow-down, discharge |
Klassifizierungen |
|
Art der Forschungsdaten | Dataset |
Erstellungsjahr | 2019 |
Herausgeber | KIT-Bibliothek |
Jahr der Veröffentlichung | 2019 |
DOI | 10.5445/IR/1000096833 |
Abstract |
In the frame of the PRESLHY project more than 200 hydrogen blow-down experiments were made with the DisCha-facility at KIT and about half of the experiments were made at cryogenic temperatures (approx. 80 K). During the experimental campaign the facility was continuously improved and extended, since several problems with the facility and instrumentation were encountered. However, the tests showed very good reproducibility. Although the actual exploitation of the data is left for the further modelling work in the work packages WP3 and WP4, some interesting observations are: not a single test showed a spontaneous ignition, although the cold jets generated relative strong electrostatic fields. This static electricity seems to be generated by ice crystal which form on the release nozzle before the tests. The cold tests with large diameter and high pressure show strong temperature decay in the reservoir close to the boiling point of hydrogen and quite a huge fraction of “particles” entrained in the released jet were recorded. It is assumed that this is ice from ambient humidity and frozen on the nozzle before the actual test. However, there might be condensed hydrogen involved, as the acceleration of the gas through the nozzle might bring down the temperature below the boiling point. Only detailed multi-phase simulations accounting for non-equilibrium effects of the real gases’ behaviour might clarify this issue.
|
Lizenz | CC BY 4.0
![]() |
Liesmich |
Result dataset files in Excel format of the sub-set of experiments with most mature measurement set-up. Data for all initial pressure levels, but same temperature (tt=80K/300K) and same nozzle diameter (mm=05/1/2/4mm) packed in zip file, named PRE3P1A_KIT_Dmm_ttK_DATA.zip
|
Zugriffszähler | 6794 |
---|---|
Downloadzähler | 21 |
Die Forschungsdaten sind sicher im Archiv aufbewahrt und könnten sich auf Speicherbändern befinden. Ein direkter Zugriff könnte momentan nicht möglich sein. Um die Daten herunterzuladen haben Sie die folgenden Möglichkeiten:
In diesem Abschnitt können BagIT Dateien heruntergeladen werden. Es ist zu beachten, dass die Dateien aus dem Archiv abgerufen werden müssen und dies möglicherweise lange dauern kann. Die Dateien können aber vorab gecached werden. Mehr Informationen zu BagIT sind unter nachfolgendem Link verfügbar (The BagIt File Packaging Format).:
Klicken Sie bitte auf den Button und wir werden die Dateien aus dem Archiv holen und in einer Zip-Datei bündeln.
Name | Dateigröße | Hochgeladen | Prüfsumme (MD5) |
---|---|---|---|
PRE3P1A_KIT_D05_300K_DATA.zip | 153.78 MiB | 25.07.19 09:01:14 | 903edbc3dd85e8aa4aee2b0f73910b0b |
PRE3P1A_KIT_D05_80K-DATA.zip | 152.99 MiB | 25.07.19 09:01:45 | f0df26e75cb29058454f557825677153 |
PRE3P1A_KIT_D1_300K_DATA.zip | 120.84 MiB | 25.07.19 09:04:30 | fe7bb03dfb2eaaf0cfe3c2acddfec8ff |
PRE3P1A_KIT_D1_80K-DATA.zip | 121.87 MiB | 25.07.19 09:04:54 | 3094105b1798dd660f8e1b2bc932bd42 |
PRE3P1A_KIT_D2_300K_DATA.zip | 129.88 MiB | 25.07.19 09:03:27 | 678ade33b192e24349f43ab5271a22c6 |
PRE3P1A_KIT_D2_80K-DATA.zip | 177.14 MiB | 25.07.19 09:03:54 | ccdbc0fad4b7308dba86c1569ed22e6d |
PRE3P1A_KIT_D4_300K_DATA.zip | 126.66 MiB | 25.07.19 09:02:17 | a7ab62971f359a0976333cec86f6738e |
PRE3P1A_KIT_D4_80K_DATA.zip | 224.94 MiB | 25.07.19 09:02:43 | 2843fe50eac792e18efbb4e77f0cfd28 |
PRE3P1A_KIT_D4_80K_PICS.zip | 40.87 MiB | 25.07.19 09:01:05 | 4addcc259a98fd375bee67105f2c38c0 |
PRESLHY_D3_4_E3P1A_DisCha_190723.pdf | 3.34 MiB | 25.07.19 09:26:38 | 083064b42ec6795d39af3a8e87cd958b |