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Richard N. Christensen
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Proceedings Papers

Two-Phase Flow Regime Maps for Straight and Coiled Spirally Fluted Tubes

Mark E. Ewing, Douglas K. Priedeman, Bruce E. Wynn, Richard N. Bohon, Richard N. Christensen
Proc. ASME. IMECE97, Fluids Engineering, 97-104, November 16–21, 1997
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1997-0761
https://doi.org/10.1115/IMECE1997-0761
View Paper titled, Two-Phase Flow Regime Maps for Straight and Coiled Spirally Fluted Tubes
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Topics: Two-phase flow, Flow (Dynamics), Bubbles, Condensation, Slug flows, Testing, Transparency, Water, Waves
Proceedings Papers

Modeling and Experimental Verification of a Perforated Plate-Fin Absorber for Aqua-Ammonia Absorption Systems

Michael A. Garrabrant, Richard N. Christensen
Proc. ASME. IMECE97, Advanced Energy Systems, 337-347, November 16–21, 1997
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1997-1006
https://doi.org/10.1115/IMECE1997-1006
View Paper titled, Modeling and Experimental Verification of a Perforated Plate-Fin Absorber for Aqua-Ammonia Absorption Systems
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Topics: Absorption, Modeling, Flow (Dynamics), Cavities, Cooling, Heat, Mass transfer, Strips, Construction, Coolants
Proceedings Papers

Performance of a Residential Sized GAX Absorption Chiller

Douglas K. Priedeman, Michael A. Garrabrant, James A. Mathias, Roger E. Stout, Richard N. Christensen
Proc. ASME. IMECE98, Advanced Energy Systems, 277-282, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0853
https://doi.org/10.1115/IMECE1998-0853
View Paper titled, Performance of a Residential Sized GAX Absorption Chiller
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Topics: Absorption, Cycles, Cooling, Heat, Stress, Flowmeters, Fluids, Generators, Heat pumps, Instrumentation
Proceedings Papers

Modeling an Integral Dual Solar/Gas Fired Generator for a Water-Lithium Bromide Absorption Chiller

Jiming Cao, Richard N. Christensen
Proc. ASME. IMECE99, Advanced Energy Systems, 159-165, November 14–19, 1999
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1999-0823
https://doi.org/10.1115/IMECE1999-0823
View Paper titled, Modeling an Integral Dual Solar/Gas Fired Generator for a Water-Lithium Bromide Absorption Chiller
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Topics: Absorption, Generators, Lithium, Modeling, Solar energy, Water, Flow (Dynamics), Heat transfer, Natural gas, Desorption
Proceedings Papers

Review on Mechanical Design of Printed Circuit Heat Exchangers

Xiaoqin Zhang, Shanbin Shi, Richard N. Christensen, Xiaodong Sun
Proc. ASME. ICONE25, Volume 9: Student Paper Competition, V009T15A042, July 2–6, 2017
Publisher: American Society of Mechanical Engineers
Paper No: ICONE25-67284
https://doi.org/10.1115/ICONE25-67284
View Paper titled, Review on Mechanical Design of Printed Circuit Heat Exchangers
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Topics: Circuits, Design engineering, Heat exchangers, Flow (Dynamics), Computer simulation, ASME Standards, Diffusion (Physics), Plates (structures), Strength (Materials), Airfoils
Proceedings Papers

Investigation of Printed Circuit Heat Exchangers for VHTRs

Sai K. Mylavarapu, Xiaodong Sun, Justin Figley, Noah J. Needler, Richard N. Christensen
Proc. ASME. HTR2008, Fourth International Topical Meeting on High Temperature Reactor Technology, Volume 1, 33-40, September 28–October 1, 2008
Publisher: American Society of Mechanical Engineers
Paper No: HTR2008-58097
https://doi.org/10.1115/HTR2008-58097
View Paper titled, Investigation of Printed Circuit Heat Exchangers for VHTRs
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Topics: Alloys, Circuits, Computational fluid dynamics, Heat exchangers, High temperature materials, Very high temperature reactors
Journal Articles

Experimental Testing of Gerotor and Scroll Expanders Used in, and Energetic and Exergetic Modeling of, an Organic Rankine Cycle

James A. Mathias, Jon R. Johnston, Jr., Jiming Cao, Douglas K. Priedeman, Richard N. Christensen
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. March 2009, 131(1): 012201.
https://doi.org/10.1115/1.3066345
Published Online: February 5, 2009
View Articletitled, Experimental Testing of Gerotor and Scroll Expanders Used in, and Energetic and Exergetic Modeling of, an Organic Rankine Cycle
Open the PDF for Experimental Testing of Gerotor and Scroll Expanders Used in, and Energetic and Exergetic Modeling of, an Organic Rankine Cycle in another window
Topics: Boilers, Condensers (steam plant), Cycles, Engines, Exergy, Flow (Dynamics), Fluids, Modeling, Organic Rankine cycle, Pumps
Journal Articles

Performance of a Residential-Sized GAX Absorption Chiller

Douglas K. Priedeman, Mem. ASME, Michael A. Garrabrant, James A. Mathias, Roger E. Stout, Richard N. Christensen
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Technical Papers
J. Energy Resour. Technol. September 2001, 123(3): 236–241.
https://doi.org/10.1115/1.1385519
Published Online: March 14, 2001
View Articletitled, Performance of a Residential-Sized GAX Absorption Chiller
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Topics: Absorption, Cooling, Cycles, Design, Generators, Heat, Heat pumps, Stress, Temperature, Testing
Journal Articles

Analysis of Heat Transfer and Fluid Flow Through a Spirally Fluted Tube Using a Porous Substrate Approach

Vijayaragham Srinivasan, Kambiz Vafai, Richard N. Christensen
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. August 1994, 116(3): 543–551.
https://doi.org/10.1115/1.2910905
Published Online: August 1, 1994
View Articletitled, Analysis of Heat Transfer and Fluid Flow Through a Spirally Fluted Tube Using a Porous Substrate Approach
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Topics: Fluid dynamics, Heat transfer, Modeling, Permeability, Flow (Dynamics), Geometry, Finite element methods, Friction, Porosity, Porous materials