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David A. Yashar (Fed)
Deputy Chief, Building Energy and Environment Division
Dr. Yashar is the Deputy Chief of the Building Energy and Environment Division (BEED) of the Engineering Laboratory (EL) at the National Institute of Standards and Technology (NIST). Dr. Yashar is a mechanical engineer and has served in a variety of technical and management roles at NIST, including Deputy Chief (2014-present) and Acting Chief (2021-2022, and 2015) of the division, member of the NIST Institutional Review Board (2016-2022), member of the Engineering Laboratory's DIB Steering Committee (2019-2021), and technical project leader for several efforts. As the BEED Deputy Chief, Dr. Yashar provides management and leadership for the division's technical activities and staff and carries out activities associated with the division's day-to-day operations.
Dr. Yashar was a member of the HVAC&R Equipment Performance Group (formerly Thermal Machinery Group) for 15 years before moving to the Division office. There, his research focused on making HVAC&R equipment more efficient, intelligent, and reliable. One major area of his work centered on improving the efficiency of air-to-refrigerant heat exchangers through measurement, modeling, and developing and employing evolutionary algorithm optimization techniques to generate no-cost design improvements. He was also heavily involved in the development and maintenance of standards for domestic refrigerating appliances for the U.S. Department of Energy, the Association of Home Appliance Manufacturers (AHAM), the International Organization for Standardization (ISO), and the International Electrotechnical Commission (IEC). His efforts have resulted in over 40 publications and new refrigerator/freezer standards in the US and abroad which are more in tune with modern appliances.
Dr. Yashar is currently a member of ASHRAE's Technology Council, and a former member and Chair of the Research Administration Committee, which oversees research related to building systems, energy efficiency, indoor air quality, refrigeration, and sustainability. He served as the Secretary for the 3rd International Institute of Refrigeration (IIR) Conference on Thermophysical Properties and Transfer Processes of Refrigerants.
Awards
2009 Department of Commerce Silver Medal for Scientific and Engineering Achievement
2014 ASHRAE Distinguished Service Award
2014 Department of Commerce Bronze Medal for Scientific and Engineering Achievement
2015 Best Paper of the Year Award from Science and Technology for the Built Environment
