Harald Klein

3.2k total citations
142 papers, 2.3k citations indexed

About

Harald Klein is a scholar working on Mechanical Engineering, Control and Systems Engineering and Biomedical Engineering. According to data from OpenAlex, Harald Klein has authored 142 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 48 papers in Mechanical Engineering, 30 papers in Control and Systems Engineering and 23 papers in Biomedical Engineering. Recurrent topics in Harald Klein's work include Process Optimization and Integration (24 papers), Advanced Control Systems Optimization (22 papers) and Heat Transfer and Optimization (18 papers). Harald Klein is often cited by papers focused on Process Optimization and Integration (24 papers), Advanced Control Systems Optimization (22 papers) and Heat Transfer and Optimization (18 papers). Harald Klein collaborates with scholars based in Germany, United States and United Kingdom. Harald Klein's co-authors include Sebastian Rehfeldt, J. Gaube, L. Decker, U. Cardella, Andreas Peschel, G. Eigenberger, Hans H. Karsch, Hubert Schmidbaur, Christine E. A. Kirschhock and Michael Hunger and has published in prestigious journals such as SHILAP Revista de lepidopterología, The Journal of Physical Chemistry and Journal of Computational Physics.

In The Last Decade

Harald Klein

131 papers receiving 2.2k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Harald Klein Germany 25 746 742 533 478 431 142 2.3k
Troy A. Semelsberger United States 22 1.5k 2.0× 519 0.7× 1.3k 2.5× 245 0.5× 644 1.5× 56 2.7k
Eustathios S. Kikkinides Greece 28 1.1k 1.4× 1.1k 1.4× 422 0.8× 206 0.4× 610 1.4× 92 2.5k
Pierre Bénard Canada 33 1.8k 2.4× 1.0k 1.4× 467 0.9× 948 2.0× 423 1.0× 106 3.1k
Laura A. Pellegrini Italy 31 388 0.5× 1.5k 2.0× 585 1.1× 207 0.4× 1.2k 2.8× 160 2.6k
Karsten Müller Germany 33 1.9k 2.5× 623 0.8× 1.0k 1.9× 1.7k 3.5× 552 1.3× 132 3.3k
Jean‐Marc Commenge France 25 561 0.8× 676 0.9× 358 0.7× 150 0.3× 1.1k 2.5× 53 2.2k
Patrick Preuster Germany 29 2.3k 3.1× 520 0.7× 1.2k 2.3× 2.3k 4.7× 428 1.0× 55 4.0k
Calin Zamfirescu Canada 29 1.5k 2.0× 1.1k 1.5× 1.0k 1.9× 662 1.4× 736 1.7× 74 3.9k
Xiaopeng Zhang China 33 985 1.3× 982 1.3× 282 0.5× 70 0.1× 583 1.4× 136 3.1k
Jingdai Wang China 33 669 0.9× 1.1k 1.5× 268 0.5× 97 0.2× 788 1.8× 259 3.8k

Countries citing papers authored by Harald Klein

Since Specialization
Citations

This map shows the geographic impact of Harald Klein's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Harald Klein with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Harald Klein more than expected).

Fields of papers citing papers by Harald Klein

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Harald Klein. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Harald Klein. The network helps show where Harald Klein may publish in the future.

Co-authorship network of co-authors of Harald Klein

This figure shows the co-authorship network connecting the top 25 collaborators of Harald Klein. A scholar is included among the top collaborators of Harald Klein based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Harald Klein. Harald Klein is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Klein, Harald, et al.. (2025). Investigation and modeling of paper drying in digital-printing. Applied Thermal Engineering. 269. 125766–125766. 1 indexed citations
2.
Wodak, Shoshana J., et al.. (2025). Dynamic multi-physics 1D-model of a proton exchange membrane electrolysis cell. International Journal of Hydrogen Energy. 119. 56–72. 3 indexed citations
3.
Tafone, Alessio, et al.. (2025). A novel approach to simulate ortho-para conversion in hydrogen liquefaction based on the van’t Hoff equation. International Journal of Hydrogen Energy. 140. 870–880. 1 indexed citations
4.
Tafone, Alessio, Roberto Pili, Tobias Massier, Lizhong Yang, & Harald Klein. (2025). Liquid air energy storage (LAES) integrated into the hydrogen economy – Techno-economic optimization of waste cold recovery from liquid hydrogen regasification. Journal of Energy Storage. 132. 117763–117763. 2 indexed citations
5.
Boden, Stephan, et al.. (2025). Investigation of Fouling on Random Packing Using Microfocus X-ray Computed Tomography. Industrial & Engineering Chemistry Research. 64(43). 20744–20756.
6.
Rehfeldt, Sebastian, et al.. (2025). Local heat transfer coefficients for cryogenic hydrogen flow in circular tubes with constant wall temperature. International Journal of Heat and Mass Transfer. 252. 127454–127454. 1 indexed citations
7.
Wolf, Christian, et al.. (2025). Model and Simulation of the Liquid Hydrogen Distribution by Trailer. IOP Conference Series Materials Science and Engineering. 1327(1). 12140–12140.
8.
Rehfeldt, Sebastian, et al.. (2024). Overview and evaluation of crossover phenomena and mitigation measures in proton exchange membrane (PEM) electrolysis. International Journal of Hydrogen Energy. 68. 705–721. 29 indexed citations
9.
10.
Reinke, Michael, et al.. (2023). Simultaneous design and part-load optimization of an industrial ammonia synthesis reactor. Chemical Engineering Journal. 480. 148302–148302. 15 indexed citations
11.
Grützner, Thomas, et al.. (2023). Simulation of the liquid flow distribution in laboratory-scale additively manufactured structured packings. Process Safety and Environmental Protection. 196. 28–39. 6 indexed citations
12.
Wunderlich, Bernd, et al.. (2023). Reduced order modeling of a pressure column of an air separation unit using the Dynamic Edmister Method. Computers & Chemical Engineering. 174. 108250–108250. 5 indexed citations
13.
Rehfeldt, Sebastian, et al.. (2023). Modeling the thermodynamic behavior of cryo-compressed hydrogen tanks for trucks. Cryogenics. 135. 103743–103743. 3 indexed citations
14.
Rehfeldt, Sebastian, et al.. (2023). Performance and cost modelling taking into account the uncertainties and sensitivities of current and next-generation PEM water electrolysis technology. International Journal of Hydrogen Energy. 48(66). 25619–25634. 35 indexed citations
15.
Rehfeldt, Sebastian, et al.. (2023). Plug & Produce – A 3D-printed sensor system concept combined with cloud-based process monitoring for data-driven decision support. Procedia CIRP. 118. 348–353. 1 indexed citations
16.
Rehfeldt, Sebastian, et al.. (2023). Design and thermodynamic analysis of a large-scale ammonia reactor for increased load flexibility. Chemical Engineering Journal. 471. 144612–144612. 21 indexed citations
17.
18.
Wunderlich, Bernd, et al.. (2018). Pressure-driven dynamic simulation of distillation columns in air separation units. SHILAP Revista de lepidopterología. 9 indexed citations
19.
Rehfeldt, Sebastian, et al.. (2017). Analysis of membranes used in external membrane humidification of PEM fuel cells. International Journal of Hydrogen Energy. 42(22). 15370–15384. 24 indexed citations
20.
Rehfeldt, Sebastian, et al.. (2016). Experimental set-up for analysis of membranes used in external membrane humidification of PEM fuel cells. International Journal of Hydrogen Energy. 41(31). 13666–13677. 32 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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2026