Staff

Philip Haves is the Leader of the Simulation Research Group. He has worked on different aspects of commercial buildings since 1986, with particular interests in simulation and in building operations. He is a Fellow of ASHRAE, the chair of its Technical Committee on Energy Calculations and a former Chair of its Technical Committee on Building Operation Dynamics. He is the immediate past president of IBPSA-USA, the US affiliate of the International Building Performance Simulation Association. He has a BA in Physics from Oxford University and a PhD in Radio Astronomy from Manchester University.

Projects: EnergyPlus

Michael Wetter is a Computational Scientist in the Simulation Research Group. His research includes integrating building performance simulation tools into the research process, as well as their use for design and operation of buildings. He did his dissertation at the University of California at Berkeley and at LBNL, where he created the GenOpt optimization program and the BuildOpt building simulation program and where he developed the first building energy optimization technique that provably converges to the optimal building design. He created various software for building energy simulation and optimization, including the Building Controls Virtual Test Bed, the Modelica Buildings library, and the GenOpt optimization program. He is a recipient of the Outstanding Young Contributor Award of the International Building Performance Simulation Association (IBPSA), the president of IBPSA-USA, a member of the board of directors of IBPSA, and a member of ASHRAE.

Yixing Chen is a Postdoctoral Fellow in the Simulation Research Group. He is currently involved in the development of EnergyPlus and a web-based retrofit toolkit for small and medium office and retail buildings, named Commercial Building Energy Saver (CBES). He got his Ph.D. in the Department of Mechanical and Aerospace Engineering from Syracuse University. His Ph.D. research focuses on the development of a modeling and simulation platform for performance-based design of low-energy and high IEQ buildings.
He received his M.S. in the Department of Building Science from National University of Singapore, and his B.S degree in Building Science Department from Tsinghua University in China.

Simona D’Oca is an Italian architect and PhD Candidate at the Energy Department Polytechnic of Turin. She is currently a visiting scholar at Lawrence Berkeley National Lab, collaborating within the Energy Technologies Area in the Building Technology and Urban Systems Department. Simona has a background in the sphere of sustainable architecture and she strongly believes in the power of the human factor on the energy saving potential of smart and sustainable building and communities. In this context, she raised pivotal attention in her researches towards the understanding of the leverage of energy related occupant behavior on building energy performance. She developed expertise in data mining and statistical analysis, building energy simulations, occupancy models, meter-based feedback behavioral programs and familiarity with social, psychological, economic aspects of consumer energy behaviour. Her researches aim to uncover best practices to support energy modelers and decision makers on how to incorporate patterns of human actions and motivations into behavioral models for bridging the gap between predicted and actual energy performance in buildings.

Dr. Tianzhen Hong is a Staff Scientist and Principal Investigator with the Building Technology and Urban Systems Division. He is a Deputy Leader of the Simulation Research Group, a registered mechanical engineer in California and a LEED accredited professional. His research focuses on data, methods, tools and policy for design and operation of low energy buildings and sustainable urban systems. He is leading the EnergyPlus development at LBNL, was the chief developer and product manager of VisualDOE version 4.0 (a GUI to DOE-2.1E), and was the founding developer of DeST (a building energy modeling program widely used in China). He was a key member of the teams that developed building energy standards for California, ASHRAE and India. He is an editorial board member of the Journal of Building Simulation, a member of the COMNET technical committee, and a member of the U.S. TAG to ISO/TC 163. He actively contributed to international collaborations such as IEA ECBCS Annex 21 and 53. He is currently co-leading the IEA EBC Annex 66: Definition and Simulation of Occupant Behavior in Buildings. He received B.Sc. in Applied Mathematics, B.Eng. and Ph.D. in HVACR from Tsinghua University, China.

Projects: Modelica, EnergyPlus

Sang Hoon Lee is a Senior Scientific Engineering Associate in the Simulation Research Group. He received a Ph.D. in Building Technology and M.S. in Integrated Facility Management from the Georgia Institute of Technology. He is a LEED accredited professional with USGBC and a Facility Management Professional with IFMA. His current work focuses on the development of the energy retrofit tool for small and medium business and large-scale energy modeling method. Prior to joining LBNL, he worked at the Georgia Institute of Technology for developing energy modeling methods that are implemented in tools such as Energy Performance Standard Calculation Toolkit for easy use by building owners, architects, and engineers and Network Energy Performance Toolkit for campus-scale energy evaluation.

Thierry Stephane Nouidui is a Principal Scientific Engineering Associate in the Simulation Research Group. His current research is focused on developing building performance simulation tools and co-simulation. Thierry received a Ph.D in Building Physics from the University of Stuttgart in Germany and a M.S. in Electrical Engineering from the University of Kiel in Germany. In his Dissertation, he developed a building physics library for simulation and analysis of the hygrothermal behaviour of buildings. Prior to joining the Simulation Research Group, he worked as research engineer at Fraunhofer Institute for Building Physics in Holzkirchen in Germany. He is member of the International Building Performance Simulation Association (IBPSA).

Xiufeng Pang is a Sr. Scientific Engineer Associate in the Simulation Research Group. His research focuses on applying performance monitoring and automated diagnostic methods to improve the performance of commercial buildings. Prior to joining LBNL, he worked as a Sr. Project Engineer in a consultant firm to conduct research on building energy efficiency technologies and lead the building energy efficiency retrofit projects. He earned his PhD at the University of Nebraska at Lincoln, where he led 4 building energy efficiency retrofit projects, supervised 7 projects and conducted more than 15 building energy audits with overall measured energy savings greater than 20%. He is an associate member of ASHRAE and member of ASME.

Projects: Modelica, EnergyPlus

Sarah C. Taylor-Lange is a Postdoctoral fellow in the Simulation Research Group. She is a data scientist with her primary research focus on building energy performance and monitoring, building energy retrofit design, green buildings and sustainable construction. She is currently working on two projects that target the reduction of energy use and carbon emissions associated with the building sector through large scale adoption of low energy buildings. The first project focuses on developing and implementing the Commercial Building Energy Saver (CBES) toolkit. This toolkit is an on-line software for conducting whole-building energy retrofit assessment of commercial buildings located throughout the United States. The second project focuses on developing quantitative metrics for modeling energy-related human behavior in buildings.
Dr. Taylor-Lange received her B.S, M.S, and Ph.D. in civil and environmental engineering from UC Davis, UC Los Angeles and The University of Texas at Austin, respectively. During her Ph.D., she was an EPA STAR Fellow and an NSF IGERT affiliate for Indoor Environmental Science and Engineering. She is a member of P.E.O. International, Chi Epsilon Honors Society, Tau-Beta-Pi Honors Society, Society of Women Engineers, American Ceramic Society, American Society of Civil Engineers and the US Green Building Council.

Dr. Rongpeng Zhang is a Postdoctoral Fellow in the Building Technology and Urban Systems Division at Lawrence Berkeley National Laboratory. He is an Energy Modeler and Mechanical Engineer with his primary research focusing on the energy prediction and management for smart building/urban systems, building energy/lighting/acoustic performance modeling and simulation, and advanced HVAC system control. He is a key investigator in several current projects in the lab, including EnergyPlus new feature development, advanced VRF-HR system control, modeling of HVAC operational faults, demand response quick assessment tool (DRQAT) for refrigerated warehouses, and SMB Toolkit development.
Dr. Zhang received his Ph.D. in Building Performance and Diagnostics program at Carnegie Mellon University, where his research focused on the dynamic optimization of integrated HVAC operation, and development of web-based information technology infrastructures and regulatory repositories for green building codes (iCodes). He received his B.S. and M.S. degrees in Built Environment and Facilities Engineering at Tongji University.