REFLEAK: NIST Leak/Recharge Simulation Program for Refrigerant Mixtures
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REFLEAK estimates composition changes of zeotropic mixtures in leak and recharge processes. The leak/recharge simulation program consists of three parts: 1) the pre-processing section for inputting required data, 2) the computation section which simulates leak/recharge processes and, 3) the post-processing section to display calculated results and to print or store data and graphs.
REFLEAK offers the following:
· Choice of simulation mode between leak only and leak/recharge
· Choice of process between isothermal (slow) and adiabatic (fast) leak conditions
· Choice of vapor leak or liquid leak
· Choice of 61 refrigerants
· Choice of any mixture, up to 5 components, comprising the above refrigerants
· Choice of 66 predefined refrigerant mixtures
· Choice of specifying the initial temperature and initial volumetric quality of charge directly or through specifying the maximum liquid fill at a different fill temperature. The second option is consistent with the specification of the initial volumetric quality used in ANSI/ASHRAE Standard 34, "Designation and Safety Classification of Refrigerants".
· Choice of specifying the number of recharges, up to 10, and the % mass leaked after each.
Calculated vapor and liquid compositions are displayed in a graphic format. Additional tabular data includes temperature, pressure, volumetric quality, liquid specific volume and vapor specific volume for each 1% of mass leaked throughout the process. Output data can be saved and printed. Thermodynamic properties of refrigerant mixtures are calculated based upon the widely used NIST Standard Reference Database 23 - NIST Reference Fluid Thermodynamic and Transport Properties Database: REFPROP Version 8.0. A user manual and help section is included.
Compared to Version 3.1, this version of REFLEAK uses the representation of thermodynamic properties based on NIST Standard Reference Database 23 - NIST Reference Fluid Thermodynamic and Transport Properties Database: REFPROP Version 9.0 (versus Version 8.0 in REFLEAK 3.1), includes extended list of refrigerants and refrigerant mixtures, and is compatible with the Microsoft® Windows® 7 operating system.
System Requirements: Free space for complete installation: 10 MB. REFLEAK is designed to run on any personal computer (PC) capable of running Microsoft® Windows® 7, XP with Service Pack 3, and Vista operating systems.
The installation module requires .NET Framework 2.0 Service Pack 2 (or later version), which can be downloaded from the Microsoft website if not present on the user's PC.
Please click here to view the PDF version of Users' Guide to see how this database works
For more information please contact:
Standard Reference Data
National Institute of Standards and Technology
100 Bureau Dr., Stop 8550
Gaithersburg, MD 20899-8550
(301) 975-2200 (VOICE)/ (301) 975 4553 (FAX) firstname.lastname@example.org (E-MAIL)
The scientific contact for this database is:
Piotr A. Domanski
National Institute of Standards and Technology Building and Fire Research Laboratory (863)
100 Bureau Dr., Stop 8631
Gaithersburg, MD 20899 (301) 975-5877 email@example.com
Keywords: Chemical leak; fractionation; recharge; refrigerant; thermodynamic properties; zeotropic mixtures; NIST.