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Buildings & Construction

Building control systems

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Displaying 326 - 346 of 346

State-of-the-Art Review for Commissioning Low Energy Buildings: Existing Cost/Benefit and Persistence Methodologies and Data, State of Development of Automated Tools and Assessment of Needs for Commissioning ZEB

August 1, 2007
Author(s)
Marti Frank, Hannah Friedman, Kristin Heinemeier, Cory Toole, David Claridge, Natascha S. Milesi-Ferretti, Philip Haves
This report documents the findings of a review of the state of the art in the commissioning of low energy buildings. The purpose of this report is threefold: 1) To identify and assess existing methodologies for defining the costs and benefits of

ECBCS Annex 47: Cost-Effective Commissioning Research

November 20, 2006
Author(s)
Natascha S. Milesi-Ferretti, Hannah Friedman, Marti Frank
In 2005, the Executive Committee of the International Energy Agency s (IEA) Energy Conservation in Buildings and Community Systems (ECBCS) program approved the start of a new four-year research project on building commissioning. Annex 47, on Cost-Effective

Lessons Learned in Wireless Monitoring

October 2, 2005
Author(s)
William M. Healy
The emergence of wireless communications technology has led to an increasing interest in sensors that are free from wiring constraints that increase the cost of installation of a sensor network and create a confusing collection of wires in a building. In

Exploration of Potential Energy Saving From Smart Appliances

July 1, 2005
Author(s)
Natascha S. Milesi-Ferretti
Technological innovations coupled with the decreasing costs of sensors have brought about a new generation of Smart appliances. While current sensor-based appliances have shown the potential to offer consumers increased options for energy and cost savings

Vibration Signatures for Three Positive Displacement Compressors

December 1, 2004
Author(s)
David A. Yashar, William V. Payne
This report presents vibration data for three positive displacement compressors which will be used to evaluate Microelectromechanical Systems (MEMS) vibration sensors at a later time. The axial, radial and tangential vibration signatures of three

A Test Shell for Developing Automated Commissioning Tools for BACnet Systems

May 20, 2003
Author(s)
Natascha S. Milesi-Ferretti, Michael A. Galler, Steven T. Bushby
spite advances in building automation technology, many building control systems do not work as intended. Thorough commissioning of control systems can significantly improve operation but it is manually intensive and thus expensive and often neglected

Energy Consumption Measurements Using AHAM HRF-1 and ISO 8561

March 10, 2003
Author(s)
David A. Yashar
This investigation compares the energy consumption ratings obtained for refrigerators using the Association of Home Appliance Manufacturers (AHAM) HRF-1 test procedure, as adopted by the United States Department of Energy (DOE), and the International

An Investigation of Refrigerant Void Fraction in Horizontal, Microfin Tubes

January 1, 2001
Author(s)
David A. Yashar, M J. Wilson, HM R. Kopke, D M. Graham, J C. Chato, TJD A. Newell
A series of experiments to determine void fraction in both condensation and evaporation have been performed in horizontal microfin tubes with refrigerants R134a and R410A. Mass flux varied from 75 kg/m2-s to 700 kg/m2-s and average test section quality
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