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Journal Articles

An Elementary Approach to Evaluating the Thermal Self-Sufficiency of Residential Buildings With Thermal Energy Storage

Richard Lüchinger, Núria Duran Adroher, Jörg Worlitschek, Heimo Walter, Philipp Schuetz
Journal: ASME Journal of Engineering for Sustainable Buildings and Cities
Publisher: ASME
Article Type: Research Papers
J. Eng. Sustain. Bldgs. Cities. November 2024, 5(4): 041002.
Paper No: JESBC-24-1026
https://doi.org/10.1115/1.4066068
Published Online: August 22, 2024
View Article titled, An Elementary Approach to Evaluating the Thermal Self-Sufficiency of Residential Buildings With Thermal Energy Storage
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Topics: Heat, Storage, Thermal energy storage, Residential construction, Heating, Temperature, Hot water, Renewable energy
Proceedings Papers

Study on the Standby Characteristics of a Packed Bed Thermal Energy Storage: Experimental Results and Model Based Parameter Optimization

Paul Schwarzmayr, Felix Birkelbach, Heimo Walter, René Hofmann
Proc. ASME. POWER2023, ASME Power Applied R&D 2023, V001T02A001, August 6–8, 2023
Publisher: American Society of Mechanical Engineers
Paper No: POWER2023-108578
https://doi.org/10.1115/POWER2023-108578
View Paper titled, Study on the Standby Characteristics of a Packed Bed Thermal Energy Storage: Experimental Results and Model Based Parameter Optimization
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Topics: Optimization, Thermal energy storage, Storage, Digital twin, Energy efficiency, Energy storage, Heat, Heat recovery, Modeling, Renewable energy
Journal Articles

Micro Encapsulated Phase Change Material for the Application in Thermal Energy Storage

Verena Sulzgruber, Miriam Unterlass, Tobia Cavalli, Heimo Walter
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. May 2022, 144(5): 052001.
Paper No: JERT-21-1193
https://doi.org/10.1115/1.4051734
Published Online: July 30, 2021
View Article titled, Micro Encapsulated Phase Change Material for the Application in Thermal Energy Storage
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Topics: Coating processes, Heating, Particulate matter, Phase change materials, Storage, Temperature, Thermal energy storage, Leakage, Cycles, Fluidized beds
Journal Articles

Mathematical Modeling of a Biomass Steam Gasifier—A Modified Equilibrium Approach

Thomas Gröbl, Heimo Walter
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research-Article
J. Energy Resour. Technol. April 2018, 140(4): 041806.
Paper No: JERT-17-1328
https://doi.org/10.1115/1.4039869
Published Online: April 19, 2018
View Article titled, Mathematical Modeling of a Biomass Steam Gasifier—A Modified Equilibrium Approach
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Topics: Biomass, Carbon, Equilibrium (Physics), Fuel gasification, Modeling, Pressure, Water, Pyrolysis, Temperature, Steam
Proceedings Papers

Fluidized Bed Particle Heat Exchanger for Supercritical Carbon Dioxide Power Cycles

Peter Steiner, Karl Schwaiger, Heimo Walter, Markus Haider, Martin Hämmerle
Proc. ASME. IMECE2016, Volume 14: Emerging Technologies; Materials: Genetics to Structures; Safety Engineering and Risk Analysis, V014T07A014, November 11–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-67104
https://doi.org/10.1115/IMECE2016-67104
View Paper titled, Fluidized Bed Particle Heat Exchanger for Supercritical Carbon Dioxide Power Cycles
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Topics: Fluidized beds, Heat exchangers, Particulate matter, Supercritical carbon dioxide, Thermodynamic power cycles, Power stations, Design, Dimensions, Energy generation, High temperature
Proceedings Papers

Active Fluidized Bed Technology Used for Thermal Energy Storage

Peter Steiner, Karl Schwaiger, Heimo Walter, Markus Haider
Proc. ASME. ES2016, Volume 1: Biofuels, Hydrogen, Syngas, and Alternate Fuels; CHP and Hybrid Power and Energy Systems; Concentrating Solar Power; Energy Storage; Environmental, Economic, and Policy Considerations of Advanced Energy Systems; Geothermal, Ocean, and Emerging Energy Technologies; Photovoltaics; Posters; Solar Chemistry; Sustainable Building Energy Systems; Sustainable Infrastructure and Transportation; Thermodynamic Analysis of Energy Systems; Wind Energy Systems and Technologies, V001T05A001, June 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: ES2016-59053
https://doi.org/10.1115/ES2016-59053
View Paper titled, Active Fluidized Bed Technology Used for Thermal Energy Storage
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Topics: Fluidized beds, Thermal energy storage, Design methodology, Energy / power systems, Energy storage, Heat, Storage, Thermodynamics
Proceedings Papers

Increasing Load Flexibility and Plant Dynamics of Thermal Power via the Implementation of Thermal Energy Storages

Peter Steiner, Karl Schwaiger, Markus Haider, Heimo Walter, Martin Hämmerle
Proc. ASME. POWER2016, ASME 2016 Power Conference, V001T01A002, June 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: POWER2016-59181
https://doi.org/10.1115/POWER2016-59181
View Paper titled, Increasing Load Flexibility and Plant Dynamics of Thermal Power via the Implementation of Thermal Energy Storages
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Topics: Dynamics (Mechanics), Stress, Thermal energy, Particulate matter, Power grids, Power stations, Renewable energy sources, Thermal power stations
Proceedings Papers

New Design of a Bimetallic Finned Tube for the Use in Latent Heat Thermal Energy Storage Units

Georg Urschitz, Jens Brier, Heimo Walter, Roland Mertz, Friedrich Bleicher, Markus Haider
Proc. ASME. ES2015, Volume 2: Photovoltaics; Renewable-Non-Renewable Hybrid Power System; Smart Grid, Micro-Grid Concepts; Energy Storage; Solar Chemistry; Solar Heating and Cooling; Sustainable Cities and Communities, Transportation; Symposium on Integrated/Sustainable Building Equipment and Systems; Thermofluid Analysis of Energy Systems Including Exergy and Thermoeconomics; Wind Energy Systems and Technologies, V002T13A002, June 28–July 2, 2015
Publisher: American Society of Mechanical Engineers
Paper No: ES2015-49143
https://doi.org/10.1115/ES2015-49143
View Paper titled, New Design of a Bimetallic Finned Tube for the Use in Latent Heat Thermal Energy Storage Units
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Topics: Design, Latent heat, Thermal energy storage, Heat transfer, Engineering prototypes, Heat exchangers, Heat, Phase change materials, Steel, Temperature
Proceedings Papers

Transient Analysis of an Improved Finned Tube Heat Exchanger for Thermal Energy Storage System

Heimo Walter, Anton Beck, Michael Hameter
Proc. ASME. ES2015, Volume 2: Photovoltaics; Renewable-Non-Renewable Hybrid Power System; Smart Grid, Micro-Grid Concepts; Energy Storage; Solar Chemistry; Solar Heating and Cooling; Sustainable Cities and Communities, Transportation; Symposium on Integrated/Sustainable Building Equipment and Systems; Thermofluid Analysis of Energy Systems Including Exergy and Thermoeconomics; Wind Energy Systems and Technologies, V002T13A003, June 28–July 2, 2015
Publisher: American Society of Mechanical Engineers
Paper No: ES2015-49144
https://doi.org/10.1115/ES2015-49144
View Paper titled, Transient Analysis of an Improved Finned Tube Heat Exchanger for Thermal Energy Storage System
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Topics: Aluminum, Computer simulation, Computer software, Design, Energy storage, Fins, Heat exchangers, Heat transfer, Melting, Shells
Proceedings Papers

Transient Numerical Analysis of Different Finned Tube Designs for Use in Latent Heat Thermal Energy Storage Devices

Anton Beck, Martin Koller, Heimo Walter, Michael Hameter
Proc. ASME. ES2015, Volume 2: Photovoltaics; Renewable-Non-Renewable Hybrid Power System; Smart Grid, Micro-Grid Concepts; Energy Storage; Solar Chemistry; Solar Heating and Cooling; Sustainable Cities and Communities, Transportation; Symposium on Integrated/Sustainable Building Equipment and Systems; Thermofluid Analysis of Energy Systems Including Exergy and Thermoeconomics; Wind Energy Systems and Technologies, V002T13A004, June 28–July 2, 2015
Publisher: American Society of Mechanical Engineers
Paper No: ES2015-49145
https://doi.org/10.1115/ES2015-49145
View Paper titled, Transient Numerical Analysis of Different Finned Tube Designs for Use in Latent Heat Thermal Energy Storage Devices
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Topics: Latent heat, Numerical analysis, Thermal energy storage, Transients (Dynamics), Melting, Solidification, Heat transfer, Natural convection, Sodium, Design
Proceedings Papers

Experimental Investigation of a Finned Mono Tube — Latent Heat Thermal Energy Storage (LHTES)

Georg Urschitz, Heimo Walter, Michael Hameter
Proc. ASME. ES2014, Volume 1: Combined Energy Cycles, CHP, CCHP, and Smart Grids; Concentrating Solar Power, Solar Thermochemistry and Thermal Energy Storage; Geothermal, Ocean, and Emerging Energy Technologies; Hydrogen Energy Technologies; Low/Zero Emission Power Plants and Carbon Sequestration; Photovoltaics; Wind Energy Systems and Technologies, V001T02A006, June 30–July 2, 2014
Publisher: American Society of Mechanical Engineers
Paper No: ES2014-6338
https://doi.org/10.1115/ES2014-6338
View Paper titled, Experimental Investigation of a Finned Mono Tube — Latent Heat Thermal Energy Storage (LHTES)
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Topics: Latent heat, Thermal energy storage, Heat transfer, Fins, Melting, Storage, Construction, Heat flux, Phase change materials, Sodium
Proceedings Papers

Dynamic Behaviour of a Vertical Natural Circulation Two Pressure Stage HRSG Behind a Heavy Duty Gas Turbine

Georg N. Stamatelopoulos, Karl Ponweiser, Heimo Walter, Wladimir Linzer, Hubert Neßler, Robert Strohmaier
Proc. ASME. GT2000, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T02A018, May 8–11, 2000
Publisher: American Society of Mechanical Engineers
Paper No: 2000-GT-0592
https://doi.org/10.1115/2000-GT-0592
View Paper titled, Dynamic Behaviour of a Vertical Natural Circulation Two Pressure Stage HRSG Behind a Heavy Duty Gas Turbine
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Topics: Gas turbines, Heat recovery steam generators, Pressure, Design, Reliability, Stress, Combined cycle gas turbines, Optimization, Simulation, Temperature
Proceedings Papers

Comparison Between Numerical and Experimental Gas Side Heat Transfer and Pressure Drop of a Tube Bank With Solid and Segmented Circular I-Fins

Rene Hofmann, Heimo Walter
Proc. ASME. ESDA2012, Volume 2: Applied Fluid Mechanics; Electromechanical Systems and Mechatronics; Advanced Energy Systems; Thermal Engineering; Human Factors and Cognitive Engineering, 709-720, July 2–4, 2012
Publisher: American Society of Mechanical Engineers
Paper No: ESDA2012-82713
https://doi.org/10.1115/ESDA2012-82713
View Paper titled, Comparison Between Numerical and Experimental Gas Side Heat Transfer and Pressure Drop of a Tube Bank With Solid and Segmented Circular I-Fins
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Topics: Computer simulation, Fins, Heat transfer, Pressure drop
Journal Articles

Experimental and Numerical Investigation of the Gas Side Heat Transfer and Pressure Drop of Finned Tubes—Part II: Numerical Analysis

Rene Hofmann, Heimo Walter
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Research-Article
J. Thermal Sci. Eng. Appl. December 2012, 4(4): 041008.
https://doi.org/10.1115/1.4007125
Published Online: October 17, 2012
View Article titled, Experimental and Numerical Investigation of the Gas Side Heat Transfer and Pressure Drop of Finned Tubes—Part II: Numerical Analysis
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Topics: Flow (Dynamics), Fluid dynamics, Heat transfer, Numerical analysis, Pressure drop, Simulation, Turbulence, Fins, Fluids, Geometry
Journal Articles

Experimental and Numerical Investigation of the Gas Side Heat Transfer and Pressure Drop of Finned Tubes—Part I: Experimental Analysis

Rene Hofmann, Heimo Walter
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Research-Article
J. Thermal Sci. Eng. Appl. December 2012, 4(4): 041007.
https://doi.org/10.1115/1.4007124
Published Online: October 17, 2012
View Article titled, Experimental and Numerical Investigation of the Gas Side Heat Transfer and Pressure Drop of Finned Tubes—Part I: Experimental Analysis
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Topics: Flow (Dynamics), Heat transfer, Pressure drop
Proceedings Papers

Development of Nomograms for the Calculation of the Temperature Distribution in a Membrane Wall

Heimo Walter
Proc. ASME. IMECE2008, Volume 5: Design, Analysis, Control and Diagnosis of Fluid Power Systems, 33-42, October 31–November 6, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2008-66361
https://doi.org/10.1115/IMECE2008-66361
View Paper titled, Development of Nomograms for the Calculation of the Temperature Distribution in a Membrane Wall
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Topics: Membranes, Temperature distribution, Temperature, Design, Boilers, Combustion chambers, Computers, Convection, Dimensions, Heat flux
Proceedings Papers

Density Wave Oscillation in a Vertical Type Natural Circulation Heat Recovery Steam Generator: A Numerical Study

Heimo Walter, Wladimir Linzer
Proc. ASME. GT2008, Volume 7: Education; Industrial and Cogeneration; Marine; Oil and Gas Applications, 53-63, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50035
https://doi.org/10.1115/GT2008-50035
View Paper titled, Density Wave Oscillation in a Vertical Type Natural Circulation Heat Recovery Steam Generator: A Numerical Study
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Topics: Density, Heat recovery steam generators, Oscillations, Waves, Flow (Dynamics), Design, Heat flux, Simulation results, Boilers, Flow instability
Proceedings Papers

Flow Stability of Heat Recovery Steam Generators

Heimo Walter, Wladimir Linzer
Proc. ASME. GT2004, Volume 4: Turbo Expo 2004, 479-487, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53040
https://doi.org/10.1115/GT2004-53040
View Paper titled, Flow Stability of Heat Recovery Steam Generators
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Topics: Density, Flow (Dynamics), Heat recovery steam generators, Oscillations, Stability, Waves
Proceedings Papers

Flow Reversal in a Horizontal Type Natural Circulation Heat Recovery Steam Generator

Heimo Walter, Wladimir Linzer
Proc. ASME. GT2006, Volume 4: Cycle Innovations; Electric Power; Industrial and Cogeneration; Manufacturing Materials and Metallurgy, 731-739, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90689
https://doi.org/10.1115/GT2006-90689
View Paper titled, Flow Reversal in a Horizontal Type Natural Circulation Heat Recovery Steam Generator
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Topics: Design, Flow (Dynamics), Heat recovery steam generators, Stability
Journal Articles

Flow Stability of Heat Recovery Steam Generators

Heimo Walter, Wladimir Linzer
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2006, 128(4): 840–848.
https://doi.org/10.1115/1.2179469
Published Online: March 1, 2004
View Article titled, Flow Stability of Heat Recovery Steam Generators
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Topics: Boilers, Flow (Dynamics), Heat recovery steam generators, Simulation, Pressure, Stability