Sebastian Rehfeldt
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View article: Validation of a thermodynamic model for the liquid hydrogen distribution utilizing novel data from an operational trailer
Validation of a thermodynamic model for the liquid hydrogen distribution utilizing novel data from an operational trailer Open
View article: Investigation of Fouling on Random Packing Using Microfocus X-ray Computed Tomography
Investigation of Fouling on Random Packing Using Microfocus X-ray Computed Tomography Open
View article: Experimental investigation and modeling of the condensation heat transfer of binary solvent mixtures on plain and low-finned tubes
Experimental investigation and modeling of the condensation heat transfer of binary solvent mixtures on plain and low-finned tubes Open
View article: Local heat transfer coefficients for cryogenic hydrogen flow in circular tubes with constant wall temperature
Local heat transfer coefficients for cryogenic hydrogen flow in circular tubes with constant wall temperature Open
View article: Integrating Thermodynamic Simulation and Surrogate Modeling to Find Optimal Drive Cycle Strategies for Hydrogen-Powered Trucks
Integrating Thermodynamic Simulation and Surrogate Modeling to Find Optimal Drive Cycle Strategies for Hydrogen-Powered Trucks Open
Hydrogen-powered heavy-duty trucks have a high potential to significantly reduce CO2 emissions in the transportation sector. Therefore, efficient hydrogen storage onboard vehicles is a key enabler for sustainable transportation, as achievi…
View article: Hydrogen from Biogas: Dynamic Modeling of an Integrated Shift Reactor
Hydrogen from Biogas: Dynamic Modeling of an Integrated Shift Reactor Open
A dynamic, pseudo‐homogeneous, two‐dimensional reactor model of an integrated shift reactor for the production of hydrogen from biogas is developed. This integrated shift reactor enables the preheating of the biogas feed through a helical …
View article: Model and Simulation of the Liquid Hydrogen Distribution by Trailer
Model and Simulation of the Liquid Hydrogen Distribution by Trailer Open
Today, the distribution of liquid hydrogen (LH 2 ) from the liquefier facility to the consumer is almost entirely performed by road trailers. Significant growth in the global LH 2 production in recent years demands efficient processes in t…
View article: Dynamic multi-physics 1D-model of a proton exchange membrane electrolysis cell
Dynamic multi-physics 1D-model of a proton exchange membrane electrolysis cell Open
View article: Experimental investigation of the impact of composite membranes and novel spacer designs on membrane humidifier performance
Experimental investigation of the impact of composite membranes and novel spacer designs on membrane humidifier performance Open
View article: Dynamic simulation of a highly load-flexible Haber–Bosch plant
Dynamic simulation of a highly load-flexible Haber–Bosch plant Open
View article: Towards reliable HETP values: Lessons learned from standardized separation efficiency measurements
Towards reliable HETP values: Lessons learned from standardized separation efficiency measurements Open
View article: Validation of a Thermodynamic Model for the Liquid Hydrogen Distribution Utilizing Novel Data from an Operational Trailer
Validation of a Thermodynamic Model for the Liquid Hydrogen Distribution Utilizing Novel Data from an Operational Trailer Open
View article: Dynamic Modeling of Mass and Heat Transfer in Membrane Humidifiers for Proton Exchange Membrane Fuel Cells
Dynamic Modeling of Mass and Heat Transfer in Membrane Humidifiers for Proton Exchange Membrane Fuel Cells Open
View article: Validation of a Thermodynamic Model for the Liquid Hydrogen Distribution Utilizing Novel Data from an Operational Trailer
Validation of a Thermodynamic Model for the Liquid Hydrogen Distribution Utilizing Novel Data from an Operational Trailer Open
View article: Heat Transfer Coefficients for Hydrogen Heat Exchangers with Large Temperature Difference
Heat Transfer Coefficients for Hydrogen Heat Exchangers with Large Temperature Difference Open
View article: Experimental Investigation and Modeling of the Condensation Heat Transfer of Binary Solvent Mixtures on Plain and Low-Finned Tubes
Experimental Investigation and Modeling of the Condensation Heat Transfer of Binary Solvent Mixtures on Plain and Low-Finned Tubes Open
View article: Natural Convection on a Horizontal Smooth Cylinder in a Cryo-Compressed Hydrogen Tank for Trucks
Natural Convection on a Horizontal Smooth Cylinder in a Cryo-Compressed Hydrogen Tank for Trucks Open
View article: Improving extrapolation capabilities of a data-driven prediction model for control of an air separation unit
Improving extrapolation capabilities of a data-driven prediction model for control of an air separation unit Open
View article: First-principle modeling of parallel-flow regenerative kilns and their optimization with genetic algorithm and gradient-based method
First-principle modeling of parallel-flow regenerative kilns and their optimization with genetic algorithm and gradient-based method Open
We present a one-dimensional first-principle model for parallel-flow regenerative kilns that accounts for the most important effects. These include the kinetics and thermal effects of the limestone decomposition as well as the heat transfe…
View article: Investigation of Crystallization Fouling on Column Internals using a Screening Test Rig
Investigation of Crystallization Fouling on Column Internals using a Screening Test Rig Open
Fouling on column internals leads to many malfunctions in chemical processes every year. Despite the importance for the industry, only a few systematic studies exist on the fouling of column internals. Here, a new screening test rig is pre…
View article: Modeling the Condensation Heat Transfer on Horizontal Low‐Finned Tubes
Modeling the Condensation Heat Transfer on Horizontal Low‐Finned Tubes Open
Most studies regarding heat transfer on low‐finned tubes address the condensation of refrigerants and water on copper tubes. Existing models are mainly validated for this use case since studies regarding different substances or tube materi…
View article: Where Does Fouling Occur in Individual Random Packing Elements? A Simulative Investigation
Where Does Fouling Occur in Individual Random Packing Elements? A Simulative Investigation Open
Fouling in columns is a persistent challenge in the chemical process industry, leading to decreased efficiency and increased operating costs. This paper presents an investigation into fouling behavior on individual random packing elements …
View article: Overview and evaluation of crossover phenomena and mitigation measures in proton exchange membrane (PEM) electrolysis
Overview and evaluation of crossover phenomena and mitigation measures in proton exchange membrane (PEM) electrolysis Open
Proton exchange membrane (PEM) electrolysis is widely considered an integral part of the energy transition. Thinner membranes can reduce Ohmic losses and increase efficiency. However, hydrogen crossover limits the use of thinner membranes.…
View article: Generalized thermodynamic modeling of hydrogen storage tanks for truck application
Generalized thermodynamic modeling of hydrogen storage tanks for truck application Open
Hydrogen-driven heavy-duty trucks are a promising technology for reducing CO2 emissions in the transportation sector. Thus, storing hydrogen efficiently onboard is vital. The three available or currently developed physical hydrogen storage…
View article: Correction to: Modeling evaporation with a meshfree collocation approach
Correction to: Modeling evaporation with a meshfree collocation approach Open
A Correction to this paper has been published: 10.1007/s40571-023-00602-0
View article: Experimental investigation of the impact of non-condensing gas on the condensation of n-propanol on a low-finned tube
Experimental investigation of the impact of non-condensing gas on the condensation of n-propanol on a low-finned tube Open
This paper investigates the impact of a non-condensing gas on the condensation heat transfer of n-propanol on a low-finned and plain tube. Despite the potential of low-finned tubes to enhance outer heat transfer during condensation, the li…
View article: Modeling mass and heat transfer in membrane humidifiers for polymer electrolyte membrane fuel cells
Modeling mass and heat transfer in membrane humidifiers for polymer electrolyte membrane fuel cells Open
Water management is essential for the performance and durability of fuel cells in automotive applications. External membrane humidification is the preferred method for this task, as no additional energy or water supply is required. Accurat…
View article: Techno-Economic Impacts of H2 Loss Recovery Methods in a Gh2 Supply Chain for Aviation
Techno-Economic Impacts of H2 Loss Recovery Methods in a Gh2 Supply Chain for Aviation Open
View article: Experimental Investigation of the Impact of Composite Membranes and Novel Spacer Designs on Membrane Humidifier Performance
Experimental Investigation of the Impact of Composite Membranes and Novel Spacer Designs on Membrane Humidifier Performance Open
View article: First-Principle Modeling of Parallel-Flow Regenerative Kilns and Optimization Based on an Artificial Neural Network
First-Principle Modeling of Parallel-Flow Regenerative Kilns and Optimization Based on an Artificial Neural Network Open