Christian Kohler

Christian Kohler

Program Manager: FLEXLAB
Program Manager 4
(510) 486-5040
eta.lbl.gov/people/Christian-Kohler
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Bio

Christian Kohler is the department head for Building Technologies at Berkeley Lab. For over 20 years he has been involved in all aspects of building energy efficiency research such as simulation, measurement and technology development. He has been deeply engaged in software development for various windows related tools, e.g., THERM, WINDOW, and Optics5. He has also led the development of new technologies for highly insulating and dynamic windows. His activities include algorithm development, user support, training, developing embedded controllers and experimental work on highly insulating and dynamic windows. His major work with industry has included being an elected Member of the Board of Directors of the National Fenestration Rating Council and the past Research Chair and Committee Chair Fenestration Technical Committee, American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE).

Prior to that he was working at the LBNL Infrared Thermography research facility.  He received his Masters degree in Building Physics in 1997 from Eindhoven University of Technology in the Netherlands.

Awards

Certificate of Excellence in Customer Service, NuturEnergy -  October 29th 2012

Certificate of Excellence in Customer Service for outstanding performance and lasting contribution on the Department of Energy's refrigerator door research project. Provided technical/engineering support for modeling refrigerator doors, in the THERM and WINDOW software, to NurturEnergy, a company that develops sustainable energy solutions.

Publications

2021

Parametric study of solid-solid translucent phase change materials in building windows

Authors: Gao, Yuan; Qiye Zheng; Jacob C. Jonsson; Sean D. Lubner; Dragan C. Curcija; Luis L. Fernandes; Sumanjeet Kaur, and Christian Kohler.
11/2021

2020

High-Performance Integrated Window and Façade Solutions for California

Authors: Lee, Eleanor S.; Anothai Thanachareonkit; D. Charlie Curcija; Gregory J. Ward; Taoning Wang; David Geisler-Moroder; Christoph Gehbauer; John Breshears; Luis L. Fernandes; Stephen E. Selkowitz; Robert Hart; Christian Kohler; David H. Blum; Jinqing Peng, and Howdy Goudey.
01/2020

2019

R&D and Implementation Outcomes From The U.S.-India Bilateral Center For Building Energy Research And Development Program

Authors: Singh, Reshma; Mary Ann Piette; Ashok J. Gadgil; Rajan Rawal; Narendra Bansal; Vishal Garg; Jyotirmay Mathur; Philip Haves; Paul A. Mathew; Christian Kohler; Mahabir Bhandari; Gail Brager; Vivian Loftness; Narendran Nadarajah; Ronnen M. Levinson; Richard E. Brown; Andre Desjarlais; Milind Rane; Sanyogita Manu; Yash Shukla, and Mona Doctor-Pingel.
08/2019

2017

Calculating the Effect of External Shading on the Solar Heat Gain Coefficient of Windows

Authors: Kohler, Christian; Yash Shukla, and Rajan Rawal.
08/2017

2015

Control algorithms for dynamic windows for residential buildings

Authors: Yazdanian, Mehry; D. Charlie Curcija; Christian Kohler; Dragan Vidanovic; Robert Hart, and Stephen Czarnecki.
12/2015

2014

High Performance Building Mockup in FLEXLAB

Authors: McNeil, Andrew; Christian Kohler; Eleanor S. Lee, and Stephen E. Selkowitz.
12/2014

2012

Simulation of complex glazing products; from optical data measurements to model based predictive controls

Authors: Kohler, Christian.
04/2012

2011

Modeling solar heat gains of complex fenestration systems using bidirectional scattering distribution functions

Authors: Nouidui, Thierry Stephane; Andrew McNeil; Christian Kohler; Brian E. Coffey, and Eleanor S. Lee.
09/2011

Research Needs: Glass Solar Reflectance and Vinyl Siding

Authors: Hart, Robert; Dragan C. Curcija; Dariush K. Arasteh; Howdy Goudey; Christian Kohler, and Stephen E. Selkowitz.

2010

Experimental and Numerical Examination of the Thermal Transmittance of High Performance Window Frames

Authors: Gustavsen, Arlid; Goce Talev; Dariush K. Arasteh; Howdy Goudey; Christian Kohler; Sivert Uvsløkk, and Bjørn Petter Jelle.
09/2010

2009

Modeling Windows in Energy Plus with Simple Performance Indices

Authors: Arasteh, Dariush K.; Christian Kohler, and Brent T. Griffith.
10/2009

2008

Highly Insulating Glazing Systems using Non-Structural Center Glazing Layers

Authors: Arasteh, Dariush K.; Howdy Goudey, and Christian Kohler.
06/2008

WINDOW 6.2/THERM 6.2 Research Version User Manual

Authors: Mitchell, Robin; Christian Kohler; Joseph H. Klems; Michael D. Rubin; Dariush K. Arasteh; Charlie Huizenga; Tiefeng Yu, and Dragan C. Curcija.
01/2008

Developing Low-Conductance Window Frames: Capabilities and Limitations of Current Window Heat Transfer Design Tools

Authors: Gustavsen, Arlid; Dariush K. Arasteh; Bjørn Petter Jelle; Dragan C. Curcija, and Christian Kohler.

2007

Field Evaluation of Low-E Storm Windows

Authors: Drumheller, S. Craig; Christian Kohler, and Stefanie Minen.
12/2007

Two-Dimensional Computational Fluid Dynamics and Conduction Simulations of Heat Transfer in Horizontal Window Frames with Internal Cavities

Authors: Gustavsen, Arlid; Christian Kohler; Arvid Dalehaug, and Dariush K. Arasteh.
01/2007

State-of-the-Art Highly Insulating Window Frames - Research and Market Review

Authors: Gustavsen, Arlid; Bjørn Petter Jelle; Dariush K. Arasteh, and Christian Kohler.

2006

Evaluating Fenestration Products for Zero-Energy Buildings: Issues for Discussion

Authors: Arasteh, Dariush K.; Dragan C. Curcija; Yu Joe Huang; Charlie Huizenga, and Christian Kohler.
08/2006

Performance Criteria for Residential Zero Energy Windows

Authors: Arasteh, Dariush K.; Howdy Goudey; Yu Joe Huang; Christian Kohler, and Robin Mitchell.
01/2007

2005

Two-Dimension Conduction and CFD Simulations for Heat Transfer in Horizontal Window Frame Cavities

Authors: Gustavsen, Arlid; Dariush K. Arasteh; Christian Kohler, and Dragan C. Curcija.
02/2005

2004

A First-Generation Prototype Dynamic Residential Window

Authors: Kohler, Christian; Howdy Goudey, and Dariush K. Arasteh.
10/2004

2003

Two-Dimensional Computational Fluid Dynamics and Conduction Simulations of Heat Transfer in Window Frames with Internal Cavities - Part 1: Cavities Only

Authors: Gustavsen, Arlid; Christian Kohler; Dariush K. Arasteh, and Dragan C. Curcija.
02/2005

THERM 5/WINDOW 5 NFRC Simulation Manual

Authors: Mitchell, Robin; Christian Kohler; Dariush K. Arasteh; John Carmody; Charlie Huizenga, and Dragan C. Curcija.

2002

Solar Absorption in Thick and Multilayered Glazings

Authors: Powles, Rebecca; Dragan C. Curcija, and Christian Kohler.
07/2002

High-Performance Commercial Building Façades

Authors: Lee, Eleanor S.; Stephen E. Selkowitz; Christian Kohler; Vladimir Bazjanac, and Vorapat Inkarojrit.

2001

Improving Information Technology to Maximize Fenestration Energy Efficiency

Authors: Arasteh, Dariush K.; Robin Mitchell; Christian Kohler; Charlie Huizenga, and Dragan C. Curcija.
12/2001

THERM Simulations of Window Indoor Surface Temperatures for Predicting Condensation

Authors: Kohler, Christian; Dariush K. Arasteh, and Robin Mitchell.
01/2002

WINDOW 5.0 User Manual for Analyzing Window Thermal Performance

Authors: Mitchell, Robin; Christian Kohler; Dariush K. Arasteh; Charlie Huizenga, and Dragan C. Curcija.

2000

THERM 2.1 NFRC Simulation Manual

Authors: Mitchell, Robin; Christian Kohler; Dariush K. Arasteh; Elizabeth U. Finlayson; Charlie Huizenga; Dragan C. Curcija, and John Carmody.
07/2000

1999

A Database of Window Annual Energy Use in Typical North American Residences

Authors: Arasteh, Dariush K.; Yu Joe Huang; Robin Mitchell; Robert D. Clear, and Christian Kohler.
02/2000

1998

Rapid field testing of low-emittance coated glazings for product verification

Authors: Griffith, Brent T.; Christian Kohler; Howdy Goudey; Daniel Turler, and Dariush K. Arasteh.
12/1998