U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Andrew K. Persily (Assoc)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 101 - 125 of 205

Characterization of Airborne Nanoparticle Released from Consumer Products

August 29, 2013
Author(s)
Li Piin Sung, Joannie W. Chin, Andrew K. Persily
This interim report summarizes research results to date under the FY2012 interagency agreement between CPSC and NIST to develop testing and measurement protocols for determining the quantities and properties of nanoparticles released from flooring finishes

A stiff variable time step transport solver for CONTAM

May 10, 2013
Author(s)
David M. Lorenzetti, William Stuart Dols, Andrew K. Persily, Michael D. Sohn
CONTAM, a multizone model for predicting whole-building airflow and contaminant transport, has been updated to improve the speed and accuracy of its transport calculations. CVODE, a general-purpose code for solving ordinary differential equations, brings

Using multi-zone modeling of particle transport to support building design

February 21, 2013
Author(s)
Dong H. Rim, Andrew K. Persily, Lance L. Wallace, William S. Dols, Steven J. Emmerich
As building design and operation changes to meet the goals of sustainability, it is critical to address indoor air quality issues such that indoor environmental conditions are maintained. Among the indoor air contaminants of concern in this context are

Characterization of Airborne Nanoparticle Releases from Consumer Products

February 6, 2013
Author(s)
Andrew K. Persily, Michael Magee, Dong H. Rim
This letter report provides a project update reflecting the activities to date under the FY2012 interagency agreement between CPSC and NIST to develop testing and measurement protocols for determining the quantities and properties of nanoparticles released

Development of a Reference Material for Building Product Emissions Testing

February 4, 2013
Author(s)
Cynthia H. Reed, Zhe Liu, Steve Cox, Andrew K. Persily, John Little
The business of measuring volatile organic compound (VOC) emissions from building products and materials has grown to include more than 100 laboratories, many with unique testing equipment and analytical techniques. For the purposes of labeling building

Multi-zone Modeling of Size- Resolved Outdoor Ultrafine Particle Entry into a Test House

December 11, 2012
Author(s)
Dong H. Rim, Andrew K. Persily, Lance L. Wallace, William S. Dols, Steven J. Emmerich
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

Indoor Air Quality Analyses of Commercial Reference Buildings

November 1, 2012
Author(s)
Lisa C. Ng, Amy Musser, Andrew K. Persily, Steven J. Emmerich
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 for

VOC emissions from a LIFE reference: small chamber tests and factorial studies

June 28, 2012
Author(s)
Wenjuan Wei, Sylvester M. Greer, Cynthia H. Reed, Andrew K. Persily, Yinping Zhang
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 analytical

Indoor Air Quality in Sustainable, Energy Efficient Buildings

May 15, 2012
Author(s)
Andrew K. Persily, Steven J. Emmerich
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-zero

Airflow and Indoor Air Quality Models of DOE Reference Commercial Buildings

February 24, 2012
Author(s)
Lisa C. Ng, Amy Musser, Andrew K. Persily, Steven J. Emmerich
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 rates

U.S. Commercial Building Airtightness Requirements and Measurements

October 12, 2011
Author(s)
Steven J. Emmerich, Andrew K. Persily
In 1998, Persily published a review of commercial and institutional building airtightness data that found significant levels of air leakage and debunked the “myth” of the airtight commercial building. Since that time, the U.S. National Institute of

Nucleation and Growth of Freshly-Formed Particles from Limonene Ozonolysis

August 30, 2011
Author(s)
Chi P. Hoang, Dong H. Rim, Lance L. Wallace, Andrew K. Persily
In building environments, oxidation reactions involving ozone and terpenoids lead to nano-sized particle formation [Jang et al. 1999]. Low volatility products of these reactions are important and add to particle mass concentrations in air through