Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Robert Hegner"'
Publikováno v:
Energy Science & Engineering, Vol 11, Iss 10, Pp 3500-3511 (2023)
Abstract High‐temperature heat pumps (HTHPs) that can supply heat at temperatures at and above 200°C have the potential to increase energy efficiency and decrease carbon dioxide (CO2) emissions in industrial processes. In this study, three reverse
Externí odkaz:
https://doaj.org/article/d65481ccd58c4135a66c881810f2ab99
Autor:
Robert Hegner, Christoph Weckerle
Publikováno v:
ATZ worldwide. 122:78-81
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cc7b28a4d9dd218b26a439aa90f871a
https://doi.org/10.1007/s38311-019-0154-8
https://doi.org/10.1007/s38311-019-0154-8
A polygeneration system producing hydrogen, electricity, process steam, and heating water is modeled and studied by conducting an exergoeconomic analysis. This system includes a homogeneous charge compression ignition (HCCI) engine burning a rich met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4902f76a3fb8b87c6374a04a360effd
https://hdl.handle.net/11454/63058
https://hdl.handle.net/11454/63058
Klimatisierungsaggregat auf Metallhydridbasis für Elektrofahrzeuge mit Batterie oder Brennstoffzelle
Autor:
Christoph Weckerle, Robert Hegner
Der im Drucktank eines Brennstoffzellenfahrzeugs gespeicherte Wasserstoff hat einen hohen potenziellen Energiegehalt (15 % des unteren Heizwerts bei 700 bar), der bislang noch nicht genutzt wird. Die Integration von zwei alternierend betriebenen Meta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cac5c98253b223d82211acb2b7ca03c5
https://elib.dlr.de/133718/
https://elib.dlr.de/133718/
High pressure storage of hydrogen is the established storage technology for automotive systems. However, around 15% of the lower heating value of hydrogen is spent to compress hydrogen up to the pressure of 700 bar. Since this energy is available on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba50d4263264d04aa64a21a873eccb48
https://doi.org/10.1016/j.apenergy.2019.114187
https://doi.org/10.1016/j.apenergy.2019.114187
Publikováno v:
Fuel. 215:40-45
In this work, an internal combustion engine is used as a reactor for partial oxidation to produce syngas together with mechanical work. Experiments were performed in a single-cylinder engine operated on methane/air. Spark-ignition (SI) and homogeneou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d00595e382e7a3c7efd620bbd1ce377c
https://doi.org/10.1016/j.fuel.2017.11.002
https://doi.org/10.1016/j.fuel.2017.11.002
Publikováno v:
Energy Conversion and Management. 243:114490
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee9b7ffe32b42f1a6d9a6815748df2dc
https://doi.org/10.1016/j.enconman.2021.114490
https://doi.org/10.1016/j.enconman.2021.114490
Publikováno v:
Energy & Fuels. 31:14079-14088
The usage of a methane-fueled homogeneously charged compression ignition (HCCI) engine process for producing base chemicals like ethylene and synthesis gas together with some work output is investigated. This polygeneration process is studied by nume
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9266e2c85c7abc57b6e339d83c557fc4
https://doi.org/10.1021/acs.energyfuels.7b02150
https://doi.org/10.1021/acs.energyfuels.7b02150
Autor:
Burak Atakan, Robert Hegner
Publikováno v:
International Journal of Hydrogen Energy. 42:1287-1297
This modeling study addresses the question, whether HCCI piston engines can be used as chemical reactors in a polygeneration process. In this context, a combustion engine is used to produce hydrogen by partial oxidation in the engine and the further
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14f54ea0e61491b4def983bf0d105840
https://doi.org/10.1016/j.ijhydene.2016.09.050
https://doi.org/10.1016/j.ijhydene.2016.09.050
Autor:
Michael Schier, Christoph Weckerle, Inga Bürger, Horst E. Friedrich, Robert Hegner, Holger Dittus
Publikováno v:
EVER
In this paper a hydrogen-based air-conditioning unit, which can also function as range extender for electric vehicles, is studied. This hydrogen A/C-unit utilizes the endothermic reaction of hydrogen desorption from metal hydrides to generate a cooli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47658293957d875d06f88883310a1d5f
https://elib.dlr.de/129569/
https://elib.dlr.de/129569/