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Publications

Search Publications by

Steven Emmerich (Fed)

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Displaying 1 - 25 of 145

Using a Single-Zone Residential Model to Evaluate Virus Particle Exposure

September 20, 2022
Author(s)
Stephen Zimmerman, Brian Polidoro, Lisa Ng, William Stuart Dols, Steven Emmerich
On March 11, 2020, the World Health Organization declared the novel coronavirus (COVID-19) outbreak a global pandemic. As noted by ASHRAE and the Centers for Disease Control and Prevention (CDC), engineering and other controls should be part of a broader

A Tool to Model Virus Particle Exposure in Residences (ViPER)

March 9, 2022
Author(s)
Stephen Zimmerman, Brian Polidoro, Lisa Ng, William Stuart Dols, Steven Emmerich
Virus Particle Exposure in Residences (ViPER) is a web-based, single zone indoor air quality and ventilation analysis tool developed by the National Institute of Standards and Technology (NIST) for evaluating an occupant's relative exposure to virus-laden

Simulation of Residential CO Exposures from Portable Generators with and without CO Hazard Mitigation Systems Meeting Requirements of Voluntary

February 16, 2022
Author(s)
Steven Emmerich, Brian Polidoro, Matthew Hnatov, Janet Buyer, Matthew Brookman
This report documents work performed by the U.S. National Institute of Standards and Technology (NIST) and the U.S. Consumer Product Safety Commission (CPSC) under an interagency agreement in support of the Commission's effort to address the carbon

Single-Zone Simulations Using FaTIMA for Reducing Aerosol Exposure in Educational Spaces

September 2, 2021
Author(s)
Lisa Ng, Dustin Poppendieck, Brian Polidoro, William Stuart Dols, Steven Emmerich, Andrew K. Persily
On March 11, 2020, the World Health Organization declared the novel coronavirus (COVID-19) outbreak a global pandemic. Following this announcement, school closures around the United States began, and starting in June 2020, many schools decided to reopen

Single-Zone Simulations Using FaTIMA for Reducing Aerosol Exposure in Educational Spaces

April 8, 2021
Author(s)
Lisa Ng, Dustin Poppendieck, Brian Polidoro, William Stuart Dols, Steven Emmerich, Andrew K. Persily
On March 11, 2020, the World Health Organization declared the novel coronavirus (COVID-19) outbreak a global pandemic. Following this announcement, school closures around the United States began, and starting in June 2020, many schools decided to reopen

Simulation of controls for reducing aerosol exposure in educational spaces using FaTIMA

September 1, 2020
Author(s)
Lisa C. Ng, Dustin G. Poppendieck, Brian J. Polidoro, William S. Dols, Steven J. Emmerich, Andrew K. Persily
Results from FaTIMA are presented, which is a recently developed, web-based front end to the CONTAM simulation engine, ContamX. We will introduce the model capabilities, user inputs, and results generated. We will then present the use of the tool in

A Tool to Model the Fate and Transport of Indoor Microbiological Aerosols (FaTIMA)

June 1, 2020
Author(s)
William S. Dols, Brian J. Polidoro, Dustin G. Poppendieck, Steven J. Emmerich
The web-based tool Fate and Transport of Indoor Microbiological Aerosols (FaTIMA) allows for the determination of the indoor fate of microbiological aerosols associated with ventilation, filtration, deposition and inactivation mechanisms. FaTIMA provides a

Moisture Transfer in Commercial Buildings due to the Air Leakage: A New Feature in the Online Airtightness Savings Calculator

December 9, 2019
Author(s)
Som Shrestha, Andre Desjarlais, Laverne Dalgleish, Lisa Ng, Diana Hun, Steven Emmerich, Gina Accawi
Air leakage through the building envelope is responsible for a large amount of energy use. The US Department of Energy Windows and Building Envelope Research and Development Roadmap for Emerging Technologies states that in 2010 infiltration was responsible

NIST Air Leakage Calculation Tools for Commercial Buildings

December 9, 2019
Author(s)
Lisa C. Ng, Shrestha Som, William S. Dols, Steven J. Emmerich
The Department of Energy (DOE) estimates that air leakage (or “infiltration”) through building envelopes accounted for 6 % of the total energy consumed by commercial buildings in 2010 (DOE 2014). Air barrier requirements are now included in ASHRAE

Estimating Interzonal Leakage in a Net-Zero Energy House

November 11, 2019
Author(s)
Lisa C. Ng, Lindsey Kinser, Steven J. Emmerich, Andrew K. Persily
The Net Zero Energy Residential Test Facility (NZERTF) was constructed at the National Institute of Standards and Technology (NIST) to support the development and adoption of cost-effective net zero energy designs and technologies. The 250 m2 two-story

Airflow and Indoor Air Quality Models of DOE Prototype Commercial Buildings

October 24, 2019
Author(s)
Lisa C. Ng, Amy Musser, Andrew K. Persily, Steven J. Emmerich
An previous report, NIST Technical Note 1734, Airflow and Indoor Air Quality Models of DOE Reference Commercial Buildings [1], detailed the CONTAM models of the 16 U. S. Department of Energy (DOE) reference commercial building models. DOE developed the

The Role of Carbon Dioxide in Ventilation and IAQ Evaluation: 40 years of AIVC

October 1, 2019
Author(s)
Andrew K. Persily, William S. Dols, Steven J. Emmerich, Lisa C. Ng
The purpose of this summary is to review Air Infiltration and Ventilation Centre activities, as reflected in its publications, related to indoor carbon dioxide over the 40 years that have transpired since its creation. These activities, like most

Estimating real-time infiltration for use in residential ventilation control

September 19, 2019
Author(s)
Lisa C. Ng, Stephen M. Zimmerman, Jeremy Good, Brian Toll, Steven J. Emmerich, Andrew K. Persily
Minimum outdoor air ventilation rates specified in standards such as ASHRAE Standard 62.2 are generally based on envelope airtightness, building floor area, geographical location, and number of occupants. ASHRAE Standard 62.2 allows for a constant

Estimating real-time infiltration for use in residential ventilation control

June 18, 2019
Author(s)
Lisa Ng, Stephen M. Zimmerman, Jeremy Good, Brian Tool, Steven Emmerich, Andrew Persily
Minimum outdoor air ventilation rates specified in standards such as ASHRAE Standard 62.2 are generally based on envelope airtightness, building floor area, geographical location, and number of occupants. To meet ventilation requirements in practice

Ventilation, IAQ and Filtration in a Net Zero Energy House

May 24, 2018
Author(s)
Andrew K. Persily, Lisa C. Ng, Dustin G. Poppendieck, Steven J. Emmerich
The Net Zero Energy Residential Test Facility (NZERTF) was constructed at the National Institute of Standards and Technology (NIST) to support the development and adoption of cost-effective net zero energy designs and technologies. The 250 m2 two-story

Balancing Energy and IAQ: NIST Net-Zero Energy Residential Test Facility

April 18, 2018
Author(s)
Lisa C. Ng, Dustin G. Poppendieck, William S. Dols, Brian P. Dougherty, Steven J. Emmerich
Buildings used 39 % of all energy used in the United States in 2017, with residential buildings and commercial buildings accounting for 20 % and 19% (EIA 2018) respectively. Zero energy buildings have the potential to help extend and accelerate the recent