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Kelvin Randhir
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Journal Articles

Implementation of a Model Predictive Control Strategy to Regulate Temperature Inside Plug-Flow Solar Reactor With Countercurrent Flow

Assaad Alsahlani, Kelvin Randhir, Michael Hayes, Philipp Schimmels, Nesrin Ozalp, James Klausner
Journal: Journal of Thermal Science and Engineering Applications
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. February 2023, 15(2): 021013.
Paper No: TSEA-22-1211
DOI: https://doi.org/10.1115/1.4056243
Published Online: December 6, 2022
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Topics: Control equipment, Flow (Dynamics), Particulate matter, Solar energy, Temperature, Fuels, Heating, Heat, Steady state, Design
Journal Articles

Design of a Combined Proportional Integral Derivative Controller to Regulate the Temperature Inside a High-Temperature Tubular Solar Reactor

Assaad Alsahlani, Kelvin Randhir, Michael Hayes, Philipp Schimmels, Nesrin Ozalp, James Klausner
Journal: Journal of Solar Energy Engineering
Article Type: Research Papers
J. Sol. Energy Eng. February 2023, 145(1): 011011.
Paper No: SOL-22-1122
DOI: https://doi.org/10.1115/1.4055296
Published Online: September 26, 2022
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Topics: Computer simulation, Control equipment, Control systems, Design, Fuels, High temperature, Particulate matter, Solar energy, Temperature, Heat transfer
Proceedings Papers

Implementation of a Model Predictive Control Strategy to Regulate Temperature Inside Plug-Flow Solar Reactor With Counter-Current Flow

Assaad AlSahlani, Kelvin Randhir, Michael Hayes, Philipp Schimmels, Nesrin Ozalp, James Klausner
Proc. ASME. HT2022, ASME 2022 Heat Transfer Summer Conference, V001T06A009, July 11–13, 2022
Paper No: HT2022-85609
DOI: https://doi.org/10.1115/HT2022-85609
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Topics: Flow (Dynamics), Fuels, Predictive control, Solar energy, Temperature, Thermal energy storage
Proceedings Papers

Design of a Combined PID Controller to Regulate the Temperature Inside a High-Temperature Tubular Solar Reactor

Assaad AlSahlani, Kelvin Randhir, Michael Hayes, Philipp Schimmels, Nesrin Ozalp, James Klausner
Proc. ASME. ES2022, ASME 2022 16th International Conference on Energy Sustainability, V001T06A001, July 11–13, 2022
Paper No: ES2022-85604
DOI: https://doi.org/10.1115/ES2022-85604
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Topics: Control equipment, Design, Fuels, High temperature, Solar energy, Temperature
Journal Articles

A Forward Feedback Control Scheme for a Solar Thermochemical Moving Bed Counter-Current Flow Reactor

Assaad Al Sahlani, Kelvin Randhir, Nesrin Ozalp, James Klausner
Journal: Journal of Solar Energy Engineering
Article Type: Research Papers
J. Sol. Energy Eng. June 2022, 144(3): 031004.
Paper No: SOL-21-1224
DOI: https://doi.org/10.1115/1.4053872
Published Online: March 7, 2022
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Topics: Computer simulation, Control equipment, Feedback, Flow (Dynamics), Particulate matter, Solar energy, Temperature, Heat flux, Energy storage, Heating
Journal Articles

A Simplified Numerical Approach to Characterize the Thermal Response of a Moving Bed Solar Reactor

Assaad Al Sahlani, Kelvin Randhir, Nesrin Ozalp, James Klausner
Journal: Journal of Thermal Science and Engineering Applications
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. August 2022, 14(8): 081010.
Paper No: TSEA-21-1377
DOI: https://doi.org/10.1115/1.4053169
Published Online: January 13, 2022
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Topics: Fuels, Heat transfer, Particulate matter, Solar energy, Temperature, Radiation (Physics), Heating, Errors, Simulation results, Heat
Journal Articles

Ultra-High Temperature Thermal Conductivity Measurements of a Reactive Magnesium Manganese Oxide Porous Bed Using a Transient Hot Wire Method

Michael Hayes, Faezeh Masoomi, Philipp Schimmels, Kelvin Randhir, James Klausner, Joerg Petrasch
Journal: Journal of Heat Transfer
Article Type: Technical Briefs
J. Heat Transfer. October 2021, 143(10): 104502.
Paper No: HT-21-1357
DOI: https://doi.org/10.1115/1.4052081
Published Online: September 8, 2021
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Topics: Particulate matter, Porosity, Temperature, Thermal conductivity, Wire, Magnesium (Metal), Transients (Dynamics)
Proceedings Papers

A Simplified Numerical Approach to Characterize the Thermal Response of a Moving Bed Solar Reactor

Assaad Al Sahlani, Kelvin Randhir, Nesrin Ozalp, James Klausner
Proc. ASME. HT2021, ASME 2021 Heat Transfer Summer Conference, V001T07A009, June 16–18, 2021
Paper No: HT2021-63924
DOI: https://doi.org/10.1115/HT2021-63924
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Topics: Fuels, Solar energy
Proceedings Papers

A Forward Feedback Control Scheme for a Solar Thermochemical Moving Bed Countercurrent Flow Reactor

Assaad Al Sahlani, Kelvin Randhir, Nesrin Ozalp, James Klausner
Proc. ASME. ES2021, ASME 2021 15th International Conference on Energy Sustainability, V001T12A001, June 16–18, 2021
Paper No: ES2021-63912
DOI: https://doi.org/10.1115/ES2021-63912
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Topics: Control equipment, Feedback, Flow (Dynamics), Solar energy
Proceedings Papers

Heat Transfer Modeling in a Counter-Current Moving-Bed Tubular Reactor for High-Temperature Thermochemical Energy Storage

Wei Huang, Eric Million, Kelvin Randhir, Joerg Petrasch, James Klausner, Nick AuYeung, Like Li
Proc. ASME. ES2021, ASME 2021 15th International Conference on Energy Sustainability, V001T06A005, June 16–18, 2021
Paper No: ES2021-63490
DOI: https://doi.org/10.1115/ES2021-63490
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Topics: Energy storage, Heat transfer, High temperature, Modeling
Proceedings Papers

Investigation of Thermochemical Hydrogen Production via the Novel Thermo-Mechanical Stabilized Iron Oxide-Zirconia Porous Structure

Ayyoub M. Mehdizadeh, Kelvin Randhir, James F. Klausner, Nicholas AuYeung, Fotouh Al-Raqom, Renwei Mei, David Hahn
Proc. ASME. ES2013, ASME 2013 7th International Conference on Energy Sustainability, V001T10A006, July 14–19, 2013
Paper No: ES2013-18403
DOI: https://doi.org/10.1115/ES2013-18403
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Topics: Hydrogen, Hydrogen production, Iron, Thermomechanics