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Displaying 1 - 25 of 176

Advanced Co-simulation Framework for Assessing the Interplay between Occupant Behaviors and Demand Flexibility in Commercial Buildings

September 2, 2024
Author(s)
Zhelun Chen, Jin Wen, Yicheng Li, L James Lo, Gabriel Grajewski, Vance (Wm.) Payne, Steven T. Bushby, Amanda Pertzborn, Zheng O'Neill, Zhiyao Yang, Caleb Calfa
With buildings contributing significantly to electricity usage, enabling demand flexibility becomes a challenge, especially when accounting for occupant comfort. This study introduces an advanced co-simulation framework that integrated a range of models

A Simulation Framework for Analyzing the Impact of Stochastic Occupant Behaviors on Demand Flexibility in Typical Commercial Buildings

June 27, 2023
Author(s)
Zhelun Chen, Yicheng Li, Jin Wen, Liang Chung Lo, Gabriel Grajewski, Zheng O'Neill, Amanda Pertzborn, Vance (Wm.) Payne, Steven T. Bushby
As one of the primary users of the electric grid, buildings and building equipment, including heating, ventilation, and air conditioning (HVAC) systems, can be leveraged to provide the flexible demand needed to balance the grid. Typical strategies to

A Review of Machine Learning Control in Building Operations

March 14, 2023
Author(s)
Liang Zhang, Zhelun Chen, Xiangyu Zhang, Amanda Pertzborn
Machine learning control (MLC) is a highly flexible and adaptable method that enables the design, modeling, tuning, and maintenance of building controllers to be more accurate, automated, flexible, and adaptable. The research topic of MLC in building

They're phishing for you: be the one that got away

February 1, 2023
Author(s)
Michael Galler
Cybersecurity has been a topic of increasing importance to the building services community for several years. While fully securing large and complex building systems can be complicated, some basic precautions can easily be applied to any system, and some

Basic Cybersecurity Recommendations for HVAC Systems- Passwords

April 1, 2022
Author(s)
Michael Galler
Cybersecurity has been a topic of increasing importance for several years. While fully securing a large and complex system can be very complicated, there are some basic precautions that can easily be applied to any system, and some basic precautions that

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

Load Forecasting Tool for NIST Transactive Energy Market

September 27, 2021
Author(s)
Farhad Omar, David Holmberg
Customers and transactive energy (TE) market managers may rely on load forecasting algorithms to purchase or sell power in a forward market environment, using day-ahead and real-time pricing structures. Accurate load forecasting becomes necessary when a

Baseline Control Systems in the Intelligent Building Agents Laboratory

September 22, 2021
Author(s)
Amanda Pertzborn, Daniel Veronica
The goal of the Embedded Intelligence in Buildings program at the National Institute of Standards and Technology (NIST) is to develop and deploy advances in measurement science that will improve building operations to achieve lower operating costs

Basic Recommendations For HVAC Cybersecurity

September 1, 2021
Author(s)
Michael Galler
Cybersecurity has been a topic of increasing importance for several years. While fully securing a large system can be very complicated, there are some basic precautions that can easily be applied to any system. The purpose of this document is to briefly

Modelling the NIST IBAL

May 28, 2021
Author(s)
Adam J. Kopach, G. F. Nellis, David Bradley, Douglas T. Reindl, Amanda Pertzborn
The Intelligent Building Agents Laboratory (IBAL) at the National Institute of Standards and Technology (NIST) will be used to experimentally study control strategies within the realm of commercial building air-conditioning systems. A TRNSYS [1] model of

Users Guide to the HVACSIM+ Configuration Tool

September 2, 2020
Author(s)
Michael A. Galler
HVACSIM+ (HVAC SIMulation PLUS other systems) was introduced by the National Institute of Standards and Technology (NIST) in 1985 as a computer simulation tool to simulate building systems. The HVACSIM+ computer program package and manuals have been

Users Guide to Type277 Loosely Coupled Integration of TRNSYS with Java

August 13, 2019
Author(s)
Farhad Omar
The purpose of this document is to provide instructions for using a newly developed TRNSYS component (Type277). Type277 enables the loosely-coupled integration of a TRNSYS model with Java software environments using socket communication. The bi-directional

Programmers Guide to the BACnet Communications DLL

October 1, 2018
Author(s)
Michael A. Galler
The BACnet standard defines a communication protocol for information exchange between components of a distributed building automation and control system. The BACnet communications dynamically linked library enables researchers to implement selected BACnet

Users Guide to the NIST Data Alignment Tool V1.0

September 4, 2018
Author(s)
Michael A. Galler
The Data Alignment Tool (DAT) was built to assist with the analysis of data used in testing Fault Detection and Diagnostics (FDD) tools and building commissioning (Cx) tools. The data sources were the Virtual Cybernetic Building Testbed (VCBT) and data

Burning Velocities of Marginally Flammable Refrigerant-Air Mixtures

May 1, 2018
Author(s)
Gregory T. Linteris
Refrigerant working fluids have been predicted to be large contributors to the increase in radiative forcing of the earth. Consequently, existing compounds will soon be phased out. Low- GWP replacements exist, but they tend to be mildly flammable, and

Users Guide to HVAC-Cx v2.2

December 6, 2017
Author(s)
Michael A. Galler, Natascha S. Milesi-Ferretti
HVAC-Cx is a software tool designed to facilitate performance analysis for mechanical equipment buildings. It is used for ongoing monitoring and provides the ability to detect faults related to improper operation, using expert rules to present results of
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