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Author: andrew persily

Displaying records 21 to 30 of 104 records.
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21. Multizone Modeling of Strategies to Reduce the Spread of Airborne Infectious Agents in Healthcare Facilities
Published: 2/1/2013
Authors: Steven J Emmerich, David Heinzerling, Jung-il Choi, Andrew Keith Persily
Abstract: Control of airborne infectious agents in hospitals is critical both to effective health care and to the control of direct and indirect health care costs. Current hospital design guidelines focus on ventilation rates, room pressure control and air fil ...

22. Standard Formaldehyde Source for Chamber Testing of Material Emissions: Modeling and Preliminary Tests
Published: 2/1/2013
Authors: Wenjuan Wei, Cynthia H. Reed, Andrew Keith Persily, Yinping Zhang
Abstract: Formaldehyde is recognized as a harmful indoor air pollutant for human health (IARC. 2004) and is emitted from building materials, including urea-formaldehyde resin in pressed wood products. Environmental chambers are typically used to measure formal ...

23. Multi-zone Modeling of Size- Resolved Outdoor Ultrafine Particle Entry into a Test House
Published: 12/11/2012
Authors: Dong H. Rim, Andrew Keith Persily, Lance L. Wallace, William S Dols, Steven J Emmerich
Abstract: Airborne particle transport into buildings is important for human exposure to particles and associated health effects. The present study investigated the entry of size-resolved outdoor ultrafine particles into a test building under three different ve ...

24. Indoor Air Quality Analyses of Commercial Reference Buildings
Report Number: 1734
Published: 11/1/2012
Authors: Lisa C Ng, Amy Musser, Andrew Keith Persily, Steven J Emmerich
Abstract: Sixteen commercial reference buildings were created in the multizone airflow and contaminant transport program CONTAM in order to support airflow and indoor air quality (IAQ) analyses, which are not possible using the existing EnergyPlus input files ...

25. VOC emissions from a LIFE reference: small chamber tests and factorial studies
Published: 6/28/2012
Authors: Wenjuan Wei, Sylvester M Greer, Cynthia H. Reed, Andrew Keith Persily, Yinping Zhang
Abstract: A liquid-inner tube diffusion-film-emission (LIFE) reference was developed to quickly evaluate the performance of a chamber system for furniture/building material VOC emission tests. The reference has a constant emission rate determined by an analyti ...

26. Reduction of Exposure to Ultrafine Particles by Kitchen Exhaust Hoods: The Effects of Varying Flow Rates, Particle Size, and Burner Position
Published: 6/6/2012
Authors: Dong H. Rim, Lance L. Wallace, Steven J Nabinger, Andrew Keith Persily
Abstract: Cooking stoves are one of the most common combustion sources of indoor ultrafine particles (UFP). UFP have been observed to be associated with adverse health effects such as respiratory and cardiovascular diseases. This study investigates the effecti ...

27. Indoor Air Quality in Sustainable, Energy Efficient Buildings
Published: 5/15/2012
Authors: Andrew Keith Persily, Steven J Emmerich
Abstract: Building designers, contractors, owners and managers have long been challenged with providing quality indoor environments at a reasonable energy cost. Current efforts to improve building energy efficiency, including goals of sustainability and net-ze ...

28. Airflow and Indoor Air Quality Models of DOE Reference Commercial Buildings
Series: Technical Note (NIST TN)
Report Number: 1734
Published: 2/24/2012
Authors: Lisa C Ng, Amy Musser, Andrew Keith Persily, Steven J Emmerich
Abstract: Sixteen reference commercial buildings were defined by the U.S. Department of Energy (DOE) and created as EnergyPlus input files. They were developed for use in assessing new technologies and supporting the development of energy codes. Infiltration ...

29. Evolution of Ultrafine Particle Size Distributions Following Indoor Episodic Releases: Relative Importance of Coagulation, Deposition and Ventilation
Published: 11/15/2011
Authors: Dong H. Rim, Lance L. Wallace, Andrew Keith Persily, Jung I. Choi
Abstract: Indoor ultrafine particles (UFP, < 100 nm) undergo aerosol processes such as coagulation and deposition, which alter UFP size distribution and accordingly the level of exposure to UFP of different sizes. This study investigates the decay of indoor UF ...

30. U.S. Commercial Building Airtightness Requirements and Measurements
Published: 10/12/2011
Authors: Steven J Emmerich, Andrew Keith Persily
Abstract: In 1998, Persily published a review of commercial and institutional building airtightness data that found significant levels of air leakage and debunked the ,mythŠ of the airtight commercial building. Since that time, the U.S. National Institute of S ...

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