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Dr. Andrew K. Persily

Dr. Andrew K. Persily is the leader of and a supervisory mechanical engineer in the Indoor Air Quality and Ventilation Group of the Energy and Environment Division (EED) of the Engineering Laboratory (EL) at the National Institute of Standards and Technology (NIST). Dr. Persily works on indoor air quality and ventilation in commercial and residential buildings. His work includes the development and application of measurement techniques to evaluate airflow and air quality characteristics in a variety of building types, including large, mechanically ventilated buildings and single-family dwellings. The evaluation procedures include tracer gas techniques for measuring air change rates and air distribution effectiveness, contaminant concentrations measurements, and envelope air-tightness. He is also involved with the development and application of multi-zone airflow and contaminant dispersal models.

Dr. Persily is a past vice-president of the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE), and is past chair of ASHRAE SSPC 62.1, responsible for the revision of the ASHRAE Ventilation Standard 62. He is a past chair of ASTM Subcommittee E6.41 on Air Leakage and Ventilation Performance and a member of subcommittee D22.05 on Indoor Air Quality.

Dr. Persily's first two years at the National Bureau of Standards were as a National Research Council Postdoctoral Research Associate, working on air infiltration in homes and large buildings. He received the Department of Commerce Bronze Medal in December 1989, and was named Young Engineer of the Year by the D.C. Council of Engineering and Architectural Societies in 1990. He was names an ASTM Fellow in 2002 and an ASHRAE Fellow in 2004.

Dr. Andrew K. Persily


Leader, Supervisory Mechanical Engineer
Energy and Environment Division
Indoor Air Quality and Ventilation Group


Princeton University, Ph.D., Mechanical and Aerospace Engineering, 1982

Princeton University, M.A., Mechanical and Aerospace Engineering, 1979

Beloit College, B.A., Physics and Mathematics, 1976


Phone: 301-975-6418