Pdf contam user guide and program documentation version. A stiff, variable time step transport solver for contam. The contam results export tool subsequently referred to as export tool was created to provide access to all of the results that can be generated by a contam simulation. The model input data contained in these databases are not intended to be.
The protection of controlled unclassified information cui resident in nonfederal systems and organizations is of paramount importance to federal agencies and can directly. Dec 06, 2019 nist internet time service metadata updated. Organizations that can minimize the time they spend dealing with patching can use those 11 resources for addressing other security concerns. Nist time widget this widget is a public service provided by the time and frequency division of the national institute of standards and technology nist. Contam is multizone airflow and contaminant transport. However, a wpc file is created by a cfd analysis for a specific wind speed and direction.
The national institute of standards and technology time and frequency division maintains the standard for frequency and time interval for the united states, provides official time to the united states, and carries out a broad program of research and service activities in time and frequency metrology. Using nist software for ntp windows server spiceworks. Comob contaminat monitoring in buildings, a matlab toolbox which encapsulates the contam computational engine for generating multiple data sets by varying different building parameters. Software piracy is theft, using crack, password, serial numbers, registration codes, key generators, cd key, hacks is illegal and prevent future development of contamrv v. Contam is a multizone indoor air quality and ventilation analysis computer program designed to help you determine. Provides substitute information system components and a means to exchange active and standby components at assignment. It is a web clock showing the official time of day from nist, displayed as a 12 or 24hour clock, in a userselectable time zone. To use these library files, download them to your computer and copy them to the desired location. However, please pay special attention to the individual works to make sure there are. Contampp contam post processor was designed to simplify the process of analyzing contam simulation results. It creates weather file templates for contam and convert energy plus weather files to contam s format. Nvd control si predictable failure prevention nist. This example, courtesy of adam benson, shows how you can get the current time from the nist atomic clock server. Even though the windows time service startup type is set to automatic, it isnt running after i start windows.
Nist has announced the launch of a new atomic clock as the official standard for civilian time. Often, they continue their activities until the urgency of the situation becomes obvious. In this study, realtime infiltration rates are estimated using the multizone airflow simulation software, contam, developed at the national institute of. Estimating realtime infiltration for use in residential ventilation control lisa c. I have usually changed the time server for my systems to one from the. Stateoftheart algorithms for sensor placement, detection and isolation of contaminant sources are also incorporated into the comob toolbox. An error has occured while windows was synchronizing with. It sits in the vagina just like a tampon and its specially designed shape raises the vaginal wall, shutting the urethra enough to prevent involuntary loss of urine. Its ability to calculate building airflow rates and relative pressures between zones of the building is useful for assessing the adequacy of ventilation rates in a building, for determining the variation in ventilation rates over time, for determining the distribution of ventilation air within a building, and for estimating the impact of. These results can only be generated using contams short time step contaminant. The nist internet time service has an executable that can be used to remedy the lack of ntp support on legacy systems. When i go to date and time in control panel, open the internet time tab, click change settings, and click update now, it says unable to start the windows time service.
To conduct airflow and iaq analyses of the prototype buildings, nist created contam models of them available for download from the nist multizone modeling website. The key to the program is the following method, which. How to make sure your pc has the right time gizmos freeware. Its ability to calculate building airflow rates and relative pressures between zones of the building is useful for assessing the adequacy of ventilation rates in a building, for determining the variation in ventilation rates over time, for determining the distribution of ventilation air within. Premovement time is the period after occupants become aware of a fire during which they think about what to do. Called nistf2, it is so accurate that it will lose only one second in 300 million years. Estimating realtime infiltration for use in residential. How to obtain the time of the internet with java rfc868. Estimating real time infiltration for use in residential ventilation control lisa c. This also sets the longest period between control element evaluations. Airflows include infiltration, exfiltration, and roomtoroom airflows and pressure differences in building systems, and can be driven by mechanical means, wind. For that purpose, wang and chen have coupled contam, a multizone network software for airflow analysis, developed by nist national institute of standards and technology with cfd0, a cfd code, originally developed by srebric et al. Contam is a popular tool to determine building air infiltration.
Ive reformatted it slightly to make it fit better on the blog page. The papers are in the public domain and are not subject to in the united states. Contam integrated environmental health impact assessment. Software license tracking can be accomplished by manual methods e. Contam is based on a graphic interface that allows the user to draw floor plans on a sketchpad and employ icons to represent airflow paths, ventilation system components, and contaminant sources.
However, please pay special attention to the individual works to make sure there are no restrictions indicated. Called nist f2, it is so accurate that it will lose only one second in 300 million years. Fetching latest commit cannot retrieve the latest commit at this time. Firdemnd simulates the suppression of post flashover charring and noncharring solidfuel fires in compartments using water sprays from portable hosenozzle equipment used by the fire departments. The errata update includes minor editorial changes to selected cui security requirements, some additional references and definitions, and a new appendix that contains an expanded discussion about each cui requirement. Contam is the popular nist tool that predicts airflows and contaminant concentrations in multizone building systems. The databases are in microsoft access format and are available for download as zip compressed files. Evacuation time consists of premovement time and movement time. Ng, stephen zimmerman, jeremy good, brian toll, steven j.
Contam provides the ability to view a limited set of these results via the contam graphical user interface, but many users require access to a much broader range of results. Contamrv displays buildings in sketchpad form very similar to the manner in which contamw does. Weatherdependent modelling of the indoor radon concentration. Determines mean time to failure mttf for assignment. This manual describes the computer program contam version 3. Controls and documents the use of peertopeer file sharing technology to ensure that this capability is not used for the unauthorized distribution, display, performance, or reproduction of ed work. Feb 03, 2009 i have tried the following internet time servers. Python module supporting the nist contam airflow model wsularpycontam. Contam is a multizone indoor air quality and ventilation analysis program designed to help you determine airflows, contaminant concentrations, and personal exposure in buildings.
Choose a folder into which you want to install the program, or simply select the default location which is c. A contam control system has sensors, logic components, and actuators, for example to model demandcontrolled ventilation. The time is supposed to be synchronized over the internet once a week to keep it accurate. To ensure updates take place at reasonable intervals, users can limit cvodes longest time step. Please see the following for information about the. This study presents a methodology for including weather factors when simulating radon levels inside a dwelling using the contam modelling software. Contam user guide and program documentation version 3 nist. After downloading contam from here then you doubleclick the microsoft installer file contam msi file to begin the installation process. The national institute of standards and technology time and frequency division maintains the standard for frequency and time interval for the united states, provides official time to the united states, and carries out a broad program of research and service activities in. Pdf contam user guide and program documentation version 3. Contam is developed for windows xp7810 environment, 32bit version.
The protection of controlled unclassified information cui resident in nonfederal systems and organizations is of paramount. The main contam result file, the sim file, is a binary file. The calculator is available for free download and lets you see realtime energy connections among building components, isolate the effects of a change to a single energy parameter or produce conceptlevel energy estimates. The contam model aims to provide a tool to calculate building airflows, to determine the variation in ventilation rates over time and weather conditions, and to provide insight in the effect of design of ventilation systems, in the distribution of ventilation air within a building, and to estimate the impact of envelope air tightening efforts on infiltration rates. The national institute of standards and technology nist has developed database structures for compiling and organizing model input data that can be used in contamlink. Depending on the heatrelease rate of the design fire, the location of the design fire, and the kinds of materials burned, a tenable environment can be maintained. Instruction and discussion for energy modelers, building simulators, architects and engineers is a site for energy modelers, building simulators, architects, and engineers who want learn the. Shareware junction periodically updates pricing and software information of contamrv v. December 6, 2019 distributes nist estimate of official u. You can download contam after registering on this page. Nist requests comments on draft sp 80040 revision 3 by. For transient analysis, these parameters vary over time and are provided via contam weather files wth file.
The following procedure enables you to save the program installer named contam32. Instruction and discussion for energy modelers, building simulators, architects and engineers is a site for energy modelers, building simulators, architects, and engineers who want learn the basics, to advanced concepts of energy modeling. Nist maintains the time scale using atomic clocks, and they coordinated it with the time scales used by other nations and the u. Nist isnt of much value outside the continental us, other regional equivalent national time and frequency. Contamw is the multizone airflow and contaminant transport analysis program that is the main tool to be used in performing multizone analysis. Contam integrated environmental health impact assessment system. Most pc users probably dont pay a lot of attention to the datetime entry in the notification area. Contam is a multizone indoor air quality and ventilation analysis. New us time standard launched with nistf2 atomic clock. This howto is now more about a possible setup of nist sofware. Follow the directions to complete the installation. Wth files are tabdelimited text files that may be readily viewed or modified with a spreadsheet program.
This means filling time does not necessarily need to be greater than evacuation time. Contam is a multizone indoor air quality and ventilation analysis program designed to help determine airflows, contaminant concentrations, and personal exposure in buildings. You can use the contam weather file creator to create wth files. Validation and assessment of the cfd0 module of contam. Contam updates these control elements between time steps. The contam results viewer, contamrv, is a tool for visualizing contaminant concentration and airflow results of contam simulations. The output is a table of elevator travel time, round trip time, people moved, and number of round trips for each floor plus the total evacuation time. As dalyon points out and i now know, windows 2000 does support sntp from the command line. Simple air handling system ahs spreasheet and contam project demonstrates the simple ahs algorithm zip file. These results can only be generated using contam s short time step contaminant simulation method. Airflows include infiltration, exfiltration, and roomtoroom airflows and pressure differences in building systems, and can be driven by mechanical means, wind pressures acting on the exterior of the.