FDD uses artificial intelligence rules and statistical analysis to find the location of mechanical problems in heating, ventilation and air-conditioning (HVAC) systems, be it valves, temperature sensors, dampers or coils, to improve the performance and energy efficiency of the system.
Buildings consume approximately 40 percent of all energy used in the United States—even more than transportation or industry. A substantial portion of that energy is used for HVAC to keep employees comfortable and computers cool. “Optimizing the way HVAC systems work will cut energy costs by improving efficiency,” explains Steven Bushby of NIST’s Building and Fire Research Laboratory.
The research began in a NIST lab equipped with an instrumented air-handling unit similar to ones seen on top of small office buildings and a set of variable-air-volume boxes that control air flow into offices. Engineers evaluated typical problems that occur in these systems—for example, what happens when a leaky valve is producing hot air during air-conditioning season. Later, they used a Virtual Cybernetic Building Test Bed at NIST to simulate what faults occur in different types of buildings under a variety of weather conditions. “This allowed us to evaluate which faults can be detected under certain weather conditions,” Bushby says.
Next, the fault detection technology was installed and tested in buildings. “In one high-rise building in California, the variable-air-volume boxes were so unreliable that one employee’s full-time job was to go throughout the building checking the condition of each variable-air-volume box, and when finished, to start all over again,” Bushby explains. With the FDD technology installed, building technicians know precisely which variable-air-volume box needs work when there is a HVAC problem.
The state of California funded part of the FDD research and after seeing its potential, added this automated fault detection and diagnostics tool to its strict building code. “With California taking this step, I believe more people will look at this technology and boost its potential in the marketplace,” Bushby says.
The air-handling units and variable-air-volume boxes are just two components of complex HVAC systems. Bushby and colleagues will continue to apply this FDD technology to other pieces of the system.
Evelyn Brown | Newswise Science News
Rock solid: Carbon-reinforced concrete from Augsburg
11.10.2016 | Universität Augsburg
Heating and cooling with environmental energy
22.09.2016 | FIZ Karlsruhe – Leibniz-Institut für Informationsinfrastruktur GmbH
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
24.10.2016 | Earth Sciences
24.10.2016 | Life Sciences
24.10.2016 | Physics and Astronomy