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Shokouh Pourarian, Jin Wen, Xiwang Li, Daniel Veronica, Xiaohui Zhou, Ran Liu
Dynamic system simulation tools are needed for developing advanced control, operation, and fault detection and diagnosis techniques for heating, ventilation, and air conditioning (HVAC) systems. There has been a lack of dynamic simulation tool development
David G. Holmberg, Steven T. Bushby, David B. Hardin
Residential, commercial, and industrial facilities have potential to support electric grid reliability with demand response (DR) via use of facility energy management approaches. The ability of different DR approaches to successfully engage the maximum
This paper quantifies the influence of acoustic excitation of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a Turbo-BII-HP boiling surface. A nanolubricant with 10 nm diameter Al2O3 nanoparticles at a 5.1 % volume
One of the most influential factors of the performance of a finned tube heat exchanger is the distribution of the air passing through it; therefore it must be known in order to produce a highly efficient design. We examined two different common style air
Shokouh Pourarian, Jin Wen, Daniel Veronica, Xiaohui Zhou, Ran Liu
Dynamic simulation software "tools" are needed for the research and development of improved methods for automatic control and automated fault detection and diagnosis of heating ventilation and air conditioning (HVAC) systems. These tools must generate data
One approach to the optimization of building heating, ventilation and air-conditioning (HVAC) systems involves the use of intelligent agents. These Agents can be used for minimizing energy consumption, maximizing occupant comfort, fault detection
The performance of a residential split heat pump in the cooling mode operating under nine faults was described using normalized performance parameters determined from a ratio of the faulty value to the no-fault value obtained from heat pump tests in
Piotr A. Domanski, J S. Brown, Jae H. Heo, Mark O. McLinden
This presentation discusses the thermodynamic performance limits of the vapor compression cycle. We have applied evolutionary algorithms to explore the performance of hypothetical refrigerants defined by the thermodynamic parameters used by the extended
The Net-Zero Energy Residential Test Facility (NZERTF), at the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland, is a research house that is comparable in size and aesthetic to the houses in the greater Washington DC metro
Commissioning is a quality assurance process for the design, construction and operation of buildings. Specifically, Building Commissioning is a process of auditing buildings to help them operate with greater efficiency in accomplishing their intended
Piotr A. Domanski, J S. Brown, 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 used by
The National Institute of Standards and Technology (NIST) received funding through the American Recovery and Reinvestment Act (ARRA) to construct a Net Zero Energy Residential Test Facility (NZERTF). The initial goal of the NZERTF is to demonstrate that a
The AHU Performance Assessment Rules (APAR) were developed in 2001 and have been implemented as part of a limited number of Fault Detection and Diagnostics (FDD) tools. While a list of the rules has been widely available, an implementation of them that is
Nanoparticle materials can be very inexpensive and the technology for producing nanofluids is mature. The production of inks, paints, coatings, and suntan lotions is old enough to be a very competitive industry. So, nanofluids probably set the benchmark
This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a rectangular finned boiling surface. A nanolubricant containing roughly 10 nm diameter Al2O3 nanoparticles of various volume
A new method is introduced to automatically detect faulty regulation of temperatures, pressures, and flow rates within the heating, ventilating, and air-conditioning (HVAC) systems and equipment of buildings by using digital data typically available from
The value and impact of demand response (DR) at grid-scale depends upon the widespread and active participation of a diverse customer base. The level of participation by customers is impacted by financial compensation and return-on-investment. The role of
Wireless sensor networks are being considered for application within buildings to control various equipment in different working environments. As wireless sensors are powered by commercially available batteries, battery performance will directly affect the
David G. Holmberg, Michelle A. Raymond, Jason D. Averill
Presently, there is no integrated solution for delivering building systems data into the hands of emergency responders. A standard building data delivery solution will integrate the capacity of the building fire safety systems with the capabilities of the
In this experiment-aided simulation study, we achieved the performance improvement of a Roof Top Unit (RTU) by optimizing an evaporator's refrigerant circuitry using evolutionary algorithms. The system used in this study was a 2-stage 7.5 Ton RTU with an
FDD CX is a commissioning tool for unitary, air-source, single-speed, vapor compression air conditioner (AC) or heat pump (HP) systems. This software tool can be utilized to commission the operation of residential ACs or HPs to ensure proper refrigerant
David G. Holmberg, Girish Ghatikar, Ed Koch, Jim Boch
One important goal for the advancement of smart grid deployments is to enable buildings to dynamically respond to the supply of electricity. Buildings should respond to grid event and price signals in order to manage peak demands on the electric grid and
In 2006, researchers from 22 organizations in ten countries began a joint effort to enable the cost-effective commissioning of existing and future buildings to improve the buildings operating performance. The commissioning techniques developed through
Christian Neumann , Henk Pietsman, Harunori Yoshida , Hideki Yuzawa, Takeshi Watanabe, Katsuhiro Kamitani, Hiroshige Kikuchi , Dirk Jacob, Oliver Baumann, 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,
With the recent emergence of standards, wireless solutions are ready to be deployed in building automation networks. IEEE 802.15.4 is a standard for short range wireless networks. Its major applications fields are home and building automation, as well as