Jason DeGraw
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View article: building-physics/refrigeration-system
building-physics/refrigeration-system Open
The existing refrigeration system for OpenStudio was originally designed for a prototype supermarket model. To support the development of new modular space types, it is crucial to refactor the system. This process includes refining the des…
View article: Generation of Low-GWP Refrigerants’ Fluid Properties for OpenStudio Measure Development
Generation of Low-GWP Refrigerants’ Fluid Properties for OpenStudio Measure Development Open
The development of OpenStudio Measures is an ongoing process, driven significantly by the collective contributions of the building energy modeling community. An Oak Ridge National Laboratory team reviewed OpenStudio Measures in the Buildin…
View article: Vertex-Cfd: A Performance-Portable Solver for the Next Generation of High-Fidelity Multi-Physics Simulations
Vertex-Cfd: A Performance-Portable Solver for the Next Generation of High-Fidelity Multi-Physics Simulations Open
View article: Energy Implications of Using Upper Room Germicidal Ultraviolet Radiation and HVAC Strategies to Combat SARS-CoV-2
Energy Implications of Using Upper Room Germicidal Ultraviolet Radiation and HVAC Strategies to Combat SARS-CoV-2 Open
View article: Effect of Zone Partitioning on Indoor Contaminant Dispersion Characteristics of the DOE Medium Office Prototype Building
Effect of Zone Partitioning on Indoor Contaminant Dispersion Characteristics of the DOE Medium Office Prototype Building Open
View article: Air Return Strategies and Airborne SARS-CoV-2
Air Return Strategies and Airborne SARS-CoV-2 Open
Dedicated ducted air return per zone for heating, ventilating, and air-conditioning (HVAC) systems is sometimes claimed to be a superior technique over plenum return strategy from the viewpoint of exposure reduction to airborne pathogens. …
View article: Building Envelope Campaign – Program Design and Stakeholder Engagement
Building Envelope Campaign – Program Design and Stakeholder Engagement Open
Building envelope technologies impact approximately 30% of the primary energy consumed by residential and commercial buildings. The Building Envelope Campaign (BEC), which is part of the Department of Energy’s Better Buildings Program, is …
View article: Assessment of Existing OpenStudio Measures: Reviews, Interviews, and Future Developments
Assessment of Existing OpenStudio Measures: Reviews, Interviews, and Future Developments Open
OpenStudio Measure development is continuously in progress and greatly propelled by the collaborative efforts within the building energy modeling community. To ensure the widespread adoption and benefit of OpenStudio Measures, developers m…
View article: Systematic approach to define a prototype building model: Convenience Store
Systematic approach to define a prototype building model: Convenience Store Open
The US Department of Energy supports the development of commercial building energy codes and standards. To support commercial building energy research activities, continuous efforts have been made to convert 30 prototype building models, w…
View article: Initial OpenStudio Profiling Results
Initial OpenStudio Profiling Results Open
OpenStudio’s performance has not historically been an area of much work, but as it has successfully replaced ad hoc model generation solutions, the performance of the software is more and more central to continuing success. This report des…
View article: Final Report on an Advanced Techno-Economic Modeling Tool for Geothermal Heat Pump Applications in Residential and Commercial Buildings
Final Report on an Advanced Techno-Economic Modeling Tool for Geothermal Heat Pump Applications in Residential and Commercial Buildings Open
Geothermal heat pumps (GHPs) have great potential to help the nation meet its energy and decarbonization goals, but consideration of these systems has been blocked by several barriers. One important barrier is the lack of a coherent tool s…
View article: EnergyPlus™ v.23.2.0 2023 [SWR-17-23]
EnergyPlus™ v.23.2.0 2023 [SWR-17-23] Open
EnergyPlus™ is a whole building energy simulation program that engineers, architects, and researchers use to model both energy consumption and water use in buildings. This is the EnergyPlus Development Repository. The Department of Energy …
View article: Development of a simplified calibrated building simulation model of a supermarket for proposed ECMs and control strategies impact evaluation
Development of a simplified calibrated building simulation model of a supermarket for proposed ECMs and control strategies impact evaluation Open
Calibrated building energy simulation is an important pathway to more energy-efficient buildings, but the information requirements of some approaches to this problem are significant. This is particularly true for supermarkets and other so-…
View article: Computational fluid dynamics simulation of SARS-CoV-2 aerosol dispersion inside a grocery store
Computational fluid dynamics simulation of SARS-CoV-2 aerosol dispersion inside a grocery store Open
Grocery stores provide essential services to communities all over the world. The COVID-19 pandemic has necessitated better understanding of the transport and dynamics of aerosolized viruses, particularly for the assessment of infection tra…
View article: Southeastern Focus Place-Based Technology Innovation Summit
Southeastern Focus Place-Based Technology Innovation Summit Open
This meeting focused on taking science-based action to realize decarbonized, place-based, clean energy interventions that are equally shaped by, inspired from, and committed to the communities they serve. We seek to make clean energy techn…
View article: Ultraviolet Germicidal Irradiation for Heating, Ventilation, and Air Conditioning: Literature Review
Ultraviolet Germicidal Irradiation for Heating, Ventilation, and Air Conditioning: Literature Review Open
Ultraviolet germicidal irradiation (UVGI) remains the only ASHRAE-recognized technology for the effective disinfection of air and surfaces, yet the technology still faces barriers to adoption. Even so, there is a growing body of literature…
View article: Multizonal modeling of SARS-CoV-2 aerosol dispersion in a virtual office building
Multizonal modeling of SARS-CoV-2 aerosol dispersion in a virtual office building Open
View article: Experimental Plan for the Vermiculite Study
Experimental Plan for the Vermiculite Study Open
Homes in which vermiculite, which can contain asbestos, is present are often deferred under the DOE Weatherization Assistance Program (WAP) because of uncertainty in how to safely weatherize such homes from a client and worker perspective …
View article: Performance Assessment of the Overall Building Envelope Thermal Performance—Building Envelope Performance (BEP) Metric
Performance Assessment of the Overall Building Envelope Thermal Performance—Building Envelope Performance (BEP) Metric Open
Today, to describe the thermal performance of the building envelope and its components we use a variation of metrics; such as, R-value, ACH (air exchange rate per hour), SHGC (solar heat gain coefficient) of windows, U-factor etc. None of …
View article: Grey-box modeling and application for building energy simulations - A critical review
Grey-box modeling and application for building energy simulations - A critical review Open
View article: Weatherization Assistant NEAT/MHEA
Weatherization Assistant NEAT/MHEA Open
The software provides a measure selection technique indicating cost effective retrofit activities that can be applied to a home using a standard Savings to Investment Ratio (SIR). Users must provide an input file describing the characteris…
View article: FY20 Third Milestone Report for Advanced Techno-Economic Modeling for Geothermal Heat Pump Applications in Residential, Commercial, and Industry Buildings
FY20 Third Milestone Report for Advanced Techno-Economic Modeling for Geothermal Heat Pump Applications in Residential, Commercial, and Industry Buildings Open
This report summarizes the developments of an integrated simulation program for enabling simulation, auto-sizing, and optimization of geothermal heat pump systems. This work fulfills the following FY20 third milestone for WBS 2.5.5.3: Adva…
View article: Energy Performance Validation of a Gaseous Air Cleaning Technology for Commercial Buildings
Energy Performance Validation of a Gaseous Air Cleaning Technology for Commercial Buildings Open
The U.S. Department of Energy (DOE) Building Technologies Office Commercial Building Integration group conducts evaluations of new energy efficiency technologies as part of the High Impact Technology Catalyst program. The subject of this f…
View article: Quantifying Thermal Performance of the Building Envelope - Beyond Common Practice
Quantifying Thermal Performance of the Building Envelope - Beyond Common Practice Open
Performance metrics serve as useful tools and indicators for many applications. For the building industry, various metrics exist; typically, these metrics do not assess the whole building performance. Instead, these represent separate comp…
View article: AirflowNetwork [SWR 19-45]
AirflowNetwork [SWR 19-45] Open
The AirflowNetwork software provides the ability to simulate air movement and the resulting transport of contaminants and other materials within a building. The performance of air distribution systems, including supply and return leaks, an…
View article: Predicting the performance of radiant technologies in attics: Reducing the discrepancies between attic specific and whole-building energy models
Predicting the performance of radiant technologies in attics: Reducing the discrepancies between attic specific and whole-building energy models Open
View article: View3D
View3D Open
This is View3D, version 3.2, a C program for the computation of geometric view factors. This version of View3D is included as part of the EnergyPlus installer package. The program utilizes a number of integration techniques to compute view…
View article: BuildingSync® v.2.5.0 2024 [SWR-18-28]
BuildingSync® v.2.5.0 2024 [SWR-18-28] Open
BuildingSync® is a building data exchange schema to better enable integration between software tools and building data workflows. The schema's original use case was focused on commercial building energy audits; however, several additional …
View article: BRICR v0.2.0 (BayREN Integrated Commercial Retrofits) [SWR 18-33]
BRICR v0.2.0 (BayREN Integrated Commercial Retrofits) [SWR 18-33] Open
BRICR is software for translating NREL's BuildingSync™ XML (BSXML) to OpenStudio® Workflow (OSW) files for simulation. Each BSXML contains information about a building as well as multiple possible energy efficiency upgrade options. An OSW …
View article: BuildingSync® [SWR-18-28]
BuildingSync® [SWR-18-28] Open
BuildingSync® is a standardized language for commercial building energy audit data that software developers can use to exchange data between audit tools. Taking the form of an XML schema, BuildingSync can be required by building owners and…