Thermal Energy Systems

Research Output

Research Output per year

1999 2021

• 124 Journal article
• 95 Article in proceeding
• 25 Poster
• 19 Conference article in Journal
• 52 More
  • 11 Conference abstract in proceeding
  • 9 Ph.D. thesis
  • 8 Paper without publisher/journal
  • 5 Book chapter
  • 4 Book
  • 4 Report
  • 4 Conference abstract for conference
  • 3 Review article
  • 1 Report chapter
  • 1 Contribution to newspaper - Feature article
  • 1 Editorial
  • 1 Other contribution

Research Output per year

Research Output per year

Search results

• 2021

  Bio-crude production through co-hydrothermal processing of swine manure with sewage sludge to enhance pumpability

  Shah, A. A., Toor, S., Seehar, T. H., Sadetmahaleh, K. K., Pedersen, T. H., Nielsen, A. H. & Rosendahl, L., 15 Mar 2021, In : Fuel . 288, 119407.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Sewage sludge
  • Manures
  • Liquefaction
  • Potassium
  • Sodium
• 2020

  A detailed pyrolysis model for a thermally large biomass particle

  Li, X., Yin, C., Kær, S. K. & Condra, T., 15 Oct 2020, In : Fuel. 278, 118397.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Pyrolysis
  • Biomass
  • Temperature distribution
  • Swelling
  • Evaporation
  2 Citations (Scopus)

• Book Review: Down to Earth: Politics in the New Climatic Regime

  Godoy, J. D., 26 Oct 2020, In : Frontiers in Climate. p. 1-3 3 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

• Development of a micro-compressed air energy storage system model based on experiments

  Chen, S., Arabkoohsar, A., Zhu, T. & Nielsen, M. P., Apr 2020, In : Energy. 197, 117152.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Energy Storage
  • Storage System
  • Compressed air energy storage
  • compressed air
  • energy storage
  6 Citations (Scopus)

• Implementing the Introduction, Methods, Results and Discussion Article Structure in Engineering Education based on Problem-based Learning

  Liso, V., 2020, In : Journal of Problem Based Learning in Higher Education.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  • engineering
  • acquisition process
  • organization
  • knowledge acquisition
  • learning

• Integration of hydrothermal liquefaction and carbon capture and storage for the production of advanced liquid biofuels with negative CO₂ emissions

  Lozano, E. M., Pedersen, T. H. & Rosendahl, L. A., 1 Dec 2020, In : Applied Energy. 279, 115753.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Carbon capture
  • Liquefaction
  • Biofuels
  • biofuel
  • liquefaction

• Modeling and Design of a Multi-Tubular Packed-Bed Reactor for Methanol Steam Reforming over a Cu/ZnO/Al2O3 Catalyst

  Zhu, J., Simon Araya, S., Cui, X., Sahlin, S. L. & Kær, S. K., Jan 2020, In : Energies. 13, 3, 25 p., 610.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  • Zinc Oxide
  • Packed Bed
  • Catalyst
  • Packed beds
  • Steam reforming
  3 Citations (Scopus)

• Modeling a novel combined solid oxide electrolysis cell (SOEC) - biomass gasification renewable methanol production system

  Ali, S., Sørensen, K. & Nielsen, M. P., Jul 2020, In : Renewable Energy. 154, p. 1025-1034 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Regenerative fuel cells
  • Methanol
  • Gasification
  • Biomass
  • Oxygen
  4 Citations (Scopus)

• System Design and Modeling of a High Temperature PEM Fuel Cell Operated with Ammonia as a Fuel

  Cinti, G., Liso, V., Sahlin, S. L. & Araya, S. S., Sep 2020, In : Energies. 13, 18, 17 p., 4689.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File

  • Ammonia
  • Fuel Cell
  • Hydrogen
  • System Design
  • System Modeling
  7 Downloads (Pure)

• The effects of cationic impurities on the performance of proton exchange membrane water electrolyzer

  Li, N., Simon Araya, S., Cui, X. & Kær, S. K., Oct 2020, In : Journal of Power Sources. 473, 228617.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Protons
  • Contamination
  • Impurities
  • Ions
  • Membranes
• 2019

  An experimental study of the drag reducing surfactant for district heating and cooling

  Kotenko, M., Oskarsson, H., Bojesen, C. & Nielsen, M. P., Jul 2019, In : Energy. 178, p. 72-78 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • District heating
  • Surface active agents
  • Drag
  • Cooling
  • Biodegradability
  4 Citations (Scopus)

• An Experimental Study of the Effect of a Turbulence Grid on the Stack Performance of an Air-Cooled Proton Exchange Membrane Fuel Cell

  Al Shakhshir, S., Gao, X. & Berning, T., Feb 2019, In : Journal of Electrochemical Energy Conversion and Storage. 17, 1, 8 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Proton exchange membrane fuel cells (PEMFC)
  • Cathodes
  • Turbulence
  • Air
  • Heat transfer

• Fault Characterization of a Proton Exchange Membrane Fuel Cell Stack

  Simon Araya, S., Zhou, F., Sahlin, S. L., Thomas, S., Jeppesen, C. & Kær, S. K., Jan 2019, In : Energies. 12, 1, p. 1-17 17 p., en12010152.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File

  • Fuel Cell
  • Fault
  • Proton exchange membrane fuel cells (PEMFC)
  • Membrane
  • Drying
  13 Citations (Scopus)

  33 Downloads (Pure)

• High performance octahedral PtNi/C catalysts investigated from rotating disk electrode to membrane electrode assembly

  Li, B., Wang, J., Gao, X., Qin, C., Yang, D., Lv, H., Xiao, Q. & Zhang, C., Feb 2019, In : Nano Research. 12, 2, p. 281-287 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Rotating disks
  • Catalysts
  • Membranes
  • Electrodes
  • poly-N,N-dimethyl-N,N-diallylammonium chloride
  14 Citations (Scopus)

• Hydrogen mass transport resistance changes in a high temperature polymer membrane fuel cell as a function of current density and acid doping

  Thomas, S., Araya, S. S., Frensch, S. H., Steenberg, T. & Kær, S. K., Sep 2019, In : Electrochimica Acta. 317, p. 521-527 7 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Doping (additives)
  • Hydrogen
  • Current density
  • Acids
  • Polymers
  6 Citations (Scopus)

• Impact of iron and hydrogen peroxide on membrane degradation for polymer electrolyte membrane water electrolysis: Computational and experimental investigation on fluoride emission

  Frensch, S. H., Serre, G., Fouda-Onana, F., Jensen, H. C., Christensen, M. L., Simon Araya, S. & Kær, S. K., 30 Apr 2019, In : Journal of Power Sources. 420, p. 54-62 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Hydrogen peroxide
  • hydrogen peroxide
  • electrolysis
  • Electrolysis
  • Hydrogen Peroxide
  10 Citations (Scopus)

  30 Downloads (Pure)

• Influence of the operation mode on PEM water electrolysis degradation

  Frensch, S. H., Fouda-Onana, F., Serre, G., Thoby, D., Araya, S. S. & Kær, S. K., Nov 2019, In : International Journal of Hydrogen Energy. 44, 57, p. 29889-29898 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • electrolysis
  • Electrolysis
  • Membranes
  • Passivation
  • degradation
  12 Citations (Scopus)

• Investigation of Vortex Generator Enhanced Double-Fin and Tube Heat Exchanger

  Singh, S., Sørensen, K. & Condra, T. J., Feb 2019, In : Journal of Heat Transfer. 141, 2, p. 1-13 13 p., 021802.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • tube heat exchangers
  • vortex generators
  • fins
  • Tubes (components)
  • winglets
  2 Citations (Scopus)

• Investigation on transient performance of a large-scale packed-bed thermal energy storage

  Singh, S., Sørensen, K., Condra, T., Batz, S. S. & Kristensen, K., Apr 2019, In : Applied Energy. 239, p. 1114-1129 16 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • energy storage
  • Packed beds
  • Thermal energy
  • Energy storage
  • Energy efficiency
  7 Citations (Scopus)

• Long-term contamination effect of iron ions on cell performance degradation of proton exchange membrane water electrolyser

  Li, N., Araya, S. S. & Kær, S. K., Sep 2019, In : Journal of Power Sources. 434, p. 1-7 7 p., 226755.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Protons
  • Contamination
  • Ions
  • Iron
  • contamination
  7 Citations (Scopus)

• Mathematical Model of Natural Circulation Biomass Boilers during Start-Up

  Bilde, K. G., Sørensen, K. & Condra, T., Nov 2019, In : International Journal of Heat and Mass Transfer. 143, 8 p., 118477.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Boiler circulation
  • Steam
  • biomass
  • boilers
  • steam
  1 Citation (Scopus)

• Modeling of thermochemically liquefied biomass products and heat of formation for process energy assessment

  Sanchez, E. M. L., Rosendahl, L. & Pedersen, T. H., 15 Nov 2019, In : Applied Energy. 254, 113654.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • energy process
  • Biomass
  • biomass
  • enthalpy
  • Enthalpy
  4 Citations (Scopus)

• Parametric analysis and optimization for exergoeconomic performance of a combined system based on solid oxide fuel cell-gas turbine and supercritical carbon dioxide Brayton cycle

  Chen, Y., Wang, M., Liso, V., Samsatli, S., Samsatli, N. J., Jing, R., Chen, J., Li, N. & Zhao, Y., Apr 2019, In : Energy Conversion and Management. 186, p. 66-81 16 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Brayton cycle
  • Exergy
  • Solid oxide fuel cells (SOFC)
  • Carbon dioxide
  • Gas turbines
  17 Citations (Scopus)

• The effect of Fe ³⁺ contamination in feed water on proton exchange membrane electrolyzer performance

  Li, N., Araya, S. S. & Kær, S. K., May 2019, In : International Journal of Hydrogen Energy. 44, 26, p. 12952-12957 6 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Protons
  • Contamination
  • contamination
  • Membranes
  • membranes
  4 Citations (Scopus)

• Trajectory integrated smoothening of exchange fields for discrete phase simulations

  Simonsen, A. S., Deen, N. G., Sørensen, K., Condra, T. & Rosendahl, L., 30 May 2019, In : Computers & Fluids. 186, p. 15-23 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Computational fluid dynamics
  • Trajectories
  • Normal distribution
  • Thermal energy
  • Probability density function
  3 Citations (Scopus)
• 2018

  Early stages of agglomeration of adhesive particles in fully-developed turbulent pipe flows

  Hærvig, J., Sørensen, K. & Condra, T. J., Sep 2018, In : International Journal of Multiphase Flow. 106, p. 254-267 14 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File

  • pipe flow
  • Pipe flow
  • agglomeration
  • adhesives
  • Adhesives
  4 Citations (Scopus)

  12 Downloads (Pure)

• Fin-and-tube heat exchanger enhancement with a combined herringbone and vortex generator design

  Välikangas, T., Singh, S., Sørensen, K. & Condra, T. J., Mar 2018, In : International Journal of Heat and Mass Transfer. 118, p. 602-616 15 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • tube heat exchangers
  • vortex generators
  • fins
  • Tubes (components)
  • Vortex flow
  19 Citations (Scopus)

• From rotating disk electrode to single cell: Exploration of PtNi/C octahedral nanocrystal as practical proton exchange membrane fuel cell cathode catalyst

  Wang, J., Li, B., Gao, X., Yang, D., Lv, H., Xiao, Q., Kær, S. K. & Zhang, C., Dec 2018, In : Journal of Power Sources. 406, p. 118-127 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • cell cathodes
  • Nanocrystals
  • Rotating disks
  • fuel cells
  • rotating disks
  6 Citations (Scopus)

• Investigating different break-in procedures for reformed methanol high temperature proton exchange membrane fuel cells

  Thomas, S., Araya, S. S., Vang, J. R. & Kær, S. K., Aug 2018, In : International Journal of Hydrogen Energy. 43, 31, p. 14691-14700 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • fuel cells
  • Proton exchange membrane fuel cells (PEMFC)
  • methyl alcohol
  • Methanol
  • membranes
  2 Citations (Scopus)

• Modelling and Experimental Analysis of a Polymer Electrolyte Membrane Water Electrolysis Cell at Different Operating Temperatures

  Liso, V., Savoia, G., Simon Araya, S., Cinti, G. & Kær, S. K., Nov 2018, In : Energies. 11, 12, p. 1-18 18 p., 3273.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File

  • Experimental Analysis
  • Electrolyte
  • Electrolysis
  • Polymers
  • Water
  9 Citations (Scopus)

  224 Downloads (Pure)

• Modelling of hot air chamber designs of a continuous flow grain dryer

  Kjær, L. S., Poulsen, M., Sørensen, K. & Condra, T. J., Oct 2018, In : Engineering Science and Technology, an International Journal. 21, 5, p. 1047-1055 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File

  • Driers (materials)
  • Air
  • Temperature distribution
  • Fuel burners
  • Ducts
  2 Citations (Scopus)

  212 Downloads (Pure)

• Model-supported characterization of a PEM water electrolysis cell for the effect of compression

  Frensch, S. H., Olesen, A. C., Simon Araya, S. & Kær, S. K., Feb 2018, In : Electrochimica Acta. 263, p. 228-236 9 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  File

  • Electrolysis
  • Polarization
  • Acoustic impedance
  • Water
  • Contact resistance
  19 Citations (Scopus)

  642 Downloads (Pure)

• Performance of a reversible heat pump / organic Rankine cycle unit coupled with a passive house to get a Positive Energy building

  Dumont, O., Do Carmo, C. M. R., Fontaine, V., Randaxhe, F., Quoilin, S., Lemort, V., Elmegaard, B. & Nielsen, M. P., 2 Jan 2018, In : Journal of Building Performance Simulation. 11, 1, p. 19-35 17 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File

  • Pump
  • Rankine cycle
  • Heat
  • Pumps
  • Cycle
  2 Citations (Scopus)

  138 Downloads (Pure)

• The Influence of Phosphoric Acid Migration on the Performance of High Temperature Polymer Electrolyte Fuel Cells

  Halter, J., Thomas, S., Kær, S. K., Schmidt, T. J. & Büchi, F. N., Sep 2018, In : Journal of Power Sources. 399, p. 151-156 6 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Phosphoric acid
  • phosphoric acid
  • fuel cells
  • Hydrogen
  • Electrolytes
  7 Citations (Scopus)
• 2017

  An EIS alternative for impedance measurement of a high temperature PEM fuel cell stack based on current pulse injection

  Jeppesen, C., Araya, S. S., Sahlin, S. L., Andreasen, S. J. & Kær, S. K., Jun 2017, In : International Journal of Hydrogen Energy. 42, 24, p. 15851-15860 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  File

  • Electrochemical impedance spectroscopy
  • impedance measurement
  • fuel cells
  • Fuel cells
  • impedance
  10 Citations (Scopus)

  309 Downloads (Pure)

• A new modified-serpentine flow field for application in high temperature polymer electrolyte fuel cell

  Singdeo, D., Dey, T., Gaikwad, S., Andreasen, S. J. & Ghosh, P. C., Jun 2017, In : Applied Energy. 195, p. 13-22 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • fuel cell
  • Electrolytes
  • electrolyte
  • flow field
  • Fuel cells
  15 Citations (Scopus)

• Comparison of distributed and centralised integration of solar heat in a district heating system

  Rämä, M. & Mohammadi, S., 15 Oct 2017, In : Energy. 137, p. 649-660 12 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • District heating
  • Hot Temperature
  • Solar collectors
  • Solar heating
  • Space heating
  29 Citations (Scopus)

• Economic assessment of electric energy storage for load shifting in positive energy building

  Dumont, O., Do Carmo, C. M. R., Georges, E., Quoilin, S. & Lemort, V., Mar 2017, In : International Journal of Energy and Environmental Engineering. 8, 1, p. 25–35 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File

  • Electric energy storage
  • Electricity
  • Zero energy buildings
  • Economics
  • Lightning
  3 Citations (Scopus)

  221 Downloads (Pure)

• Electrochemical Impedance Spectroscopy (EIS) Characterization of Reformate-operated High Temperature PEM Fuel Cell Stack

  Sahlin, S. L., Simon Araya, S., Andreasen, S. J. & Kær, S. K., Apr 2017, In : International Journal of Power and Energy Research. 1, 1, p. 20-40 20 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File

  • fuel cells
  • impedance
  • stoichiometry
  • anodes
  • characterization
  1541 Downloads (Pure)

• Experimental study to distinguish the effects of methanol slip and water vapour on a high temperature PEM fuel cell at different operating conditions

  Thomas, S., Vang, J. R., Araya, S. S. & Kær, S. K., Apr 2017, In : Applied Energy. 192, p. 422–436 15 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • fuel cell
  • Water vapor
  • density current
  • Methanol
  • methanol
  20 Citations (Scopus)

  25 Downloads (Pure)

• Fault detection and isolation of high temperature proton exchange membrane fuel cell stack under the influence of degradation

  Jeppesen, C., Araya, S. S., Sahlin, S. L., Thomas, S., Andreasen, S. J. & Kær, S. K., Aug 2017, In : Journal of Power Sources. 359, p. 37-47 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  File

  • fault detection
  • fuel cells
  • Proton exchange membrane fuel cells (PEMFC)
  • Anodes
  • isolation
  17 Citations (Scopus)

  305 Downloads (Pure)

• Impedance characterization of high temperature proton exchange membrane fuel cell stack under the influence of carbon monoxide and methanol vapor

  Jeppesen, C., Polverino, P., Andreasen, S. J., Araya, S. S., Sahlin, S. L., Pianese, C. & Kær, S. K., Aug 2017, In : International Journal of Hydrogen Energy. 42, 34, p. 21901-21912 12 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • fuel cells
  • carbon monoxide
  • Carbon monoxide
  • Proton exchange membrane fuel cells (PEMFC)
  • methyl alcohol
  12 Citations (Scopus)

• Implications of fin profiles on overall performance and weight reduction of a fin and tube heat exchanger

  Singh, S., Sørensen, K., Simonsen, A. S. & Condra, T. J., Mar 2017, In : Applied Thermal Engineering. 115, p. 962–976 15 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Tubes (components)
  • Waste heat utilization
  • Aspect ratio
  • Heat exchangers
  • Nusselt number
  14 Citations (Scopus)

• Inertial range spectrum of field-aligned whistler turbulence

  Dwivedi, N. K. & Singh, S., Feb 2017, In : Physica Scripta. 92, 6 p., 035001.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Turbulence
  • Magnetic Field
  • Electric Field
  • turbulence
  • Range of data

• Investigation of material efficient fin patterns for cost-effective operation of fin and tube heat exchanger

  Singh, S., Sørensen, K. & Condra, T. J., Nov 2017, In : Applied Thermal Engineering. 126, p. 903-914 12 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Tubes (components)
  • Costs
  • Thermal energy
  • Polynomials
  • Exhaust gases
  10 Citations (Scopus)

• Modeling and optimization of integrated exhaust gas recirculation and multi-stage waste heat recovery in marine engines

  Kyriakidis, F., Sørensen, K., Singh, S. & Condra, T. J., Nov 2017, In : Energy Conversion and Management. 151, p. 286-295 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  • Marine engines
  • Exhaust gas recirculation
  • Waste heat utilization
  • Steam
  • Boilers
  20 Citations (Scopus)

• New load cycling strategy for enhanced durability of high temperature proton exchange membrane fuel cell

  Thomas, S., Jeppesen, C., Steenberg, T., Araya, S. S., Vang, J. R. & Kær, S. K., Nov 2017, In : International Journal of Hydrogen Energy. 42, 44, p. 27230-27240

  Research output: Contribution to journal › Journal article › Research › peer-review

  • fuel cells
  • Proton exchange membrane fuel cells (PEMFC)
  • durability
  • Current density
  • Relaxation time
  8 Citations (Scopus)

• Nonlinear whistler wave model for lion roars in the Earth’s magnetosheath

  Dwivedi, N. K. & Singh, S., Sep 2017, In : Astrophysics and Space Science. 362, 172

  Research output: Contribution to journal › Journal article › Research › peer-review

  • magnetosheath
  • nonlinear wave
  • magnetic field
  • slopes
  • magnetic fields

• On the Adhesive JKR Contact and Rolling Models for Reduced Particle Stiffness Discrete Element Simulations

  Hærvig, J., Kleinhans, U., Wieland, C., Spliethoff, H., Jensen, A. L., Sørensen, K. & Condra, T. J., Sep 2017, In : Powder Technology. 319, p. 472-482 11 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File

  • Stiffness
  • Finite difference method
  • Rolling resistance
  • Adhesives
  • Torque
  29 Citations (Scopus)

  141 Downloads (Pure)

• On the Fully-Developed Heat Transfer Enhancing Flow Field in Sinusoidally, Spirally Corrugated Tubes Using Computational Fluid Dynamics

  Hærvig, J., Sørensen, K. & Condra, T. J., Mar 2017, In : International Journal of Heat and Mass Transfer. 106, p. 1051–1062 12 p.

  Research output: Contribution to journal › Journal article › Research › peer-review

  Open Access

  File

  • computational fluid dynamics
  • Heat exchangers
  • flow distribution
  • Flow fields
  • heat transfer
  23 Citations (Scopus)

  118 Downloads (Pure)