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Buildings & Construction

Indoor air quality

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Displaying 226 - 250 of 431

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

Building air leakage databases in energy conservation policies: analysis of selected initiatives in 4 European countries and the USA

January 2, 2013
Author(s)
Wanyu Chan, Francois R. Carrie, Jiri Novak, Andres Litvak, Fabrice Richieri, Oliver Solche, Wei Pan, Steven Emmerich
We collected information on existing envelope air leakage databases from countries that are involved in the AIVC-TightVent project "Development and applications of building air leakage databases". This document summarizes the information from five

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

Environmental Analysis: Persistent Organic Pollutants

November 29, 2011
Author(s)
Lane C. Sander, Michele M. Schantz, Stephen A. Wise
The term “persistent organic pollutants” (POPs) describes a broad range of anthropogenic compounds that are present in the environment. Persistent organic pollutants can be grouped into subclasses based on their original intended uses or chemical
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