Publications

Displaying 26 - 50 of 133

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

Simulation of indoor and outdoor air quality and health impacts following installation of energy-efficient retrofits in a multifamily housing unit

March 2, 2020

Author(s)

Lindsay Underhill, Chad W. Milando, Jonathan I. Levy, William Stuart Dols, Sharon K. Lee, M. Patricia Fabian

Efforts to reduce energy consumption and greenhouse gas emissions in the United States have led to widespread interest in energy-efficient retrofits in the residential sector. Weatherization retrofits, such as air sealing and insulation, lower residential

Quantifying the Impact of Housing Interventions on Indoor Air Quality And Energy Consumption Using Coupled Simulation Models

January 20, 2020

Author(s)

Lindsay J. Underhill, William Stuart Dols, Sharon Lee, M. P. Fabian, Jonathan I. Levy

While residential energy and ventilation standards aim to improve the energy performance and indoor air quality (IAQ) of homes, their combined impact across diverse residential activities and housing environments has not been well-established. In this

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

Using co-simulation between EnergyPlus and CONTAM to develop IAQ and energy-centric demand-controlled ventilation systems

October 16, 2019

Author(s)

Maria Alonso, William Stuart Dols, Hans M. Mathisen

Buildings account for approximately 40 % of energy use in the European Union. In light of the Energy performance of buildings directive (EPBD), efforts are underway to reduce this energy use by targeting zero or nearly zero emissions/energy buildings (nZEB

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

Cross-platform, Public Domain Simulation Tools for Performing Parametric IAQ and Energy Analysis

September 26, 2018

Author(s)

William S. Dols, Lindsay J. Underhill

As building design is being driven towards lower energy use, the relationship between indoor air quality (IAQ) and energy becomes more important due in large part to reduced building envelope leakage, which can lead to higher indoor pollutant levels

Development of Airborne Nanoparticle Exposure Modeling Tools

July 27, 2018

Author(s)

William S. Dols, Andrew K. Persily, Brian J. Polidoro

Engineered nanoparticles (ENP) are being used in many applications including consumer products. There are many different means by which ENPs may be incorporated into these products (freely- dispersed, embedded, reactive or passive) which can impact the

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

AN INVESTIGATION OF DIFFERENT STRATEGIES FOR SOLVING COUPLED THERMAL AIRFLOWS BY MULTI-ZONE NETWORK METHOD

February 15, 2018

Author(s)

Ali Katal, Liangzhu Wang, William Stuart Dols, Brian Polidoro

Natural ventilation (NV) is a method of allowing fresh outdoor air into indoor living spaces by natural means without the use of air conditioning units and other types of mechanically driven devices. Therefore NV of buildings is a cooling strategy that

Evaluating IAQ and Energy Impacts of Ventilation in a Net-Zero Energy House Using a Coupled Model

December 18, 2017

Author(s)

Lisa C. Ng, Dustin G. Poppendieck, William S. Dols, Steven J. Emmerich

The National Institute of Standards and Technology constructed the Net-Zero Energy (NZE) Residential Test Facility to support the development and adoption of cost-effective NZE designs and technologies. Source control approaches were implemented that

Weather Correlations to Calculate Infiltration Rates for U.S Commercial Building Energy Models

November 14, 2017

Author(s)

Lisa C. Ng, Nelson Ojeda-Quiles, William S. Dols, Steven J. Emmerich

As building envelope performance and heating, ventilating and air-conditioning (HVAC) equipment efficiencies are improved to reduce building energy use, a greater percentage of the total energy loss can occur through building envelope leakage. Although the

Model Validation Study of Carbon Monoxide Transport due to Portable Generator Operation in an Attached Garage

October 6, 2017

Author(s)

Steven J. Emmerich, William S. Dols

NIST conducted a series of tests to characterize the indoor CO concentrations resulting from portable generators operating in the attached garage of a house under various use and environmental conditions. An extensive model validation effort using the

Simulation of Residential Carbon Monoxide Exposure Due to Generator Operation in Enclosed Spaces

September 23, 2016

Author(s)

Steven J. Emmerich, Brian J. Polidoro, William S. Dols

The U.S. Consumer Product Safety Commission (CPSC) and others are concerned about the hazard of acute carbon monoxide (CO) exposures from portable gasoline powered generators that can result in death or serious adverse health effects in exposed individuals

Evaluating IAQ and Energy Impacts of Ventilation in a Net-Zero Energy House Using a Coupled Model

September 20, 2016

Author(s)

Lisa C. Ng, William S. Dols, Dustin G. Poppendieck, Steven J. Emmerich

The National Institute of Standards and Technology (NIST) constructed the Net-Zero Energy Residential Test Facility (NZERTF) to support the development and adoption of cost-effective NZE designs and technologies. Among the key objectives of the facility

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