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This paper describes the development and implementation of a simulation testbed used to study the concept of employing intelligent agents to optimize the performance of building Heating, Ventilating, and Air Conditioning (HVAC) systems. One day simulated
Piotr A. Domanski, J S. Brown, Jae H. Heo, Janusz Wojtusiak, Mark O. McLinden
This paper explores the thermodynamic performance limits of the vapor compression cycle. In particular, we apply evolutionary algorithms to explore the performance of thousands of hypothetical refrigerants defined by their thermodynamic parameters using
This paper presents liquid kinematic viscosity and density measurements of a synthetic polyolester based copper (II) oxide (CuO) nanoparticle dispersion (nanolubricant) at atmospheric pressure for a temperature range from approximately 288 K to 318 K. The
Sensor nodes in wireless networks often use batteries as their source of energy, but replacing or recharging exhausted batteries in a deployed network can be difficult and costly. Therefore, prolonging battery life becomes a principal objective in the
The enterprise integration-style interfaces and information models in the Organization for the Advancement of Structured Information Systems (OASIS) collaborative energy standards are designed to address information exchange across the smart grid. This
Chlo? Legris, Daniel Choiniere, Natascha S. Milesi-Ferretti
This report summarizes part of the work of IEA-ECBCS Annex 47 Cost-Effective Commissioning of Existing and Low Energy Buildings. It is based on the research findings from the participating countries. The publication is an official Annex report. Report 1,
This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a Turbo-BII-HP boiling surface. An Al2O3 nanolubricant (a lubricant containing dispersed nano-size particles) was made by suspending
The National Electrical Manufacturer's Association (NEMA) and the American Society of Heating Refrigerating, and Air-Conditioning Engineers (ASHRAE) are working to cooperatively develop a national Facility Smart Grid Information Model standard. This
The role of buildings in the electric grid is steadily being transformed to that of active participant in managing the grid, serving as a key player in maintaining grid reliability. The necessity for this transformation is based on three factors: grid
A study was conducted to evaluate the potential for using a linear relationship between the power input to a residential water heater and the output of thermal energy in hot water for rating the units energy efficiency. This approach has the potential for
Natascha S. Milesi-Ferretti, Michael A. Galler, Farhad Omar
This paper discusses the issue of standby power in the Department of Energys (DOE) residential appliance test procedures. Section 1 introduces DOEs legislative mandate, briefly discusses the rise of standby power in white products, and gives a sense of
The BACnet Data Source (BDS) was developed to be used as a component of the Virtual Cybernetic Building Testbed (VCBT) (1), in conjunction with work on various Fault Detection and Diagnostics (FDD) (2) and Building Commissioning (Cx) tools. The VCBT uses
Richard Lau, Sami Ayyorgun, Siun Chuon Mau, Archan Misra, David Holmberg, Steven T. Bushby
While it is well recognized that renewable microgrid generation and intelligent storage can significantly reduce a building's need for grid power and its peak loading, there is currently no sound and generalized approach to combine these two technologies
This paper considers the alternative cooling technologies studied by Fisher et al. (1994) and assesses their current potential to compete with or to replace vapor compression refrigeration technology for space cooling and near-room temperature
Piotr A. Domanski, David A. Yashar, Sunil Lee, Janusz Wojtusiak
A public domain finned-tube heat exchanger simulation program, EVAP-COND ver. 3.0, has been equipped with an evolutionary algorithm-based module, called ISHED Intelligent System for Heat Exchanger Design, which facilitates optimization of refrigerant
This paper presents liquid kinematic viscosity and density measurements of a synthetic polyolester-based aluminum oxide (Al2O3) nanoparticle dispersion (nanolubricant) at atmospheric pressure over the temperature range 288 K to 318 K. The polyolester was a
The paper summarizes the goals and planned activities to be undertaken by the participants in Annex 36. Some background information and status of Annex work specific to each participant is provided as well.
The National Electrical Manufacturers Association (NEMA) and the American Society of Heating Refrigerating, and Air-Conditioning Engineers (ASHRAE) are working to cooperatively develop a national Facility Smart Grid Information Model standard. This
Christopher Iglehart, Natascha S. Milesi-Ferretti, Michael Galler
NIST provides technical support to the DOE in developing test procedures for a variety of residential appliances. As part of this process, DOE seeks representative consumer use data to establish test procedures that are representative of real world use
Experiments conducted in a Toledo Ohio school are used to examine the use of signals from simulated heat detectors by incident command. Two approaches are examined. The first is to use the signal from ceiling mounted thermocouples to deduce conditions in