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The CYCLE_D package simulates the vapor compression refrigeration cycles that use pure refrigerants or mixtures of refrigerants. The model can simulate a basic refrigeration cycle as well as a cycle with a liquidline/suction-line heat exchanger. CYCLE_D
Summarizes World Trade Center (WTC) investigation activities since the May 2003 progress report. Access has been obtained to nearly all of the important information needed for the investigation. The selection process for all major contractors and experts
Several studies have shown the importance of particle losses in real homes due to deposition; however, none have shown the impact of using a central forced air fan and in-duct filter on particle deposition rates. In an attempt to provide such data, this
The building automation industry is moving away from isolated building control systems toward building automation systems (BAS) integrated with business applications on a shared "IT" network. This open shared architecture allows not only for integration of
Opposed-flow flame spread over the surface of a semi-infinite solid has been a subject of much investigation in the past. Several elegant analytical flame spread models have also appeared in the literature. It is indeed fascinating to note how the authors
In cooperation with the fire protection engineering community, a numerical fire model, Fire Dynamics Simulator (FDS), is being developed at NIST to study fire behavior and to evaluate the performance of fire protection systems in buildings. Version 1 of
Rodney A. Bryant, Thomas J. Ohlemiller, Erik L. Johnsson, Anthony P. Hamins, B S. Grove, William F. Guthrie, Alexander Maranghides, George W. Mulholland
The 3 Megawatt Heat Release Rate Facility was developed at NIST as a first step toward having broad capabilities for making quantitative large scale fire measurements. Such capabilities will be used at NIST to validate fire models and to develop sub-grid
Thermoplastic materials such as polypropylene (PP), polyethylene (PE), and polystyrene (PS) are widely used in household furnishings, and therefore constitute a large fraction of the fuel load during a fire. The combustible gases generated during polymer
Richard W. Bukowski, Richard D. Peacock, Jason D. Averill, Thomas G. Cleary, Nelson P. Bryner, Paul A. Reneke
This report presents the results of the project and provides details of the response of a range of residential smoke alarm technologies in a controlled laboratory test and in a series of real-scale tests conducted in two different residential structures
Andrew K. Persily, A L. Musser, Steven J. Emmerich, Michael A. Taylor
Carbon-dioxide (CO2) based demand controlled ventilation (DCV) offers the potential for more energy efficient building ventilation compared with constant ventilation rates based on design occupancy levels. A number of questions related to CO2-based DCV