Printer Friendly

NIST smooths transition to "safe," energy-efficient refrigeration. (News Briefs).

The National Institute of Standards and Technology has contributed significantly to the refrigeration industry through its work with "alternative" refrigerants for the past 14 years, and the effort is paying off.

When it became known that chlorofluorocarbons and hydrochlorofluorocarbons in refrigerants were contributing to depletion of the earth's protective ozone layer, NIST began a program (funded by the Department of Energy's Office of Basic Energy Sciences and Office of Building Technologies) to measure the properties of their replacements. These data have been made available through a computer program known as NIST Standard Reference Database 23: Thermodynamic and Transport Properties of Refrigerants and Refrigerant Mixtures Database (or REEPROP for REFrigerant PROPerties). Some 1500 copies of REFPROP have been distributed over the years and it continues to be a timely and valuable tool for refrigeration engineers, chemical and equipment manufacturers, and others who use refrigerants. Version 6.0 now provides data on 33 pure refrigerants, as well as refrigerant mixtures.

But the database's real impact has been in facilitating the design of more energy-efficient cooling equipment. In 1999, the Environmental Protection Agency estimated that new, non-CFC chillers used to cool large buildings reduced U.S. energy costs by $480 million annually (which corresponds to an improvement in energy efficiency of 35 %).

"Accurate property data are essential for optimizing efficiency, and the entire NIST refrigerants program over its 14 year duration would be paid for by a single years savings resulting from a single percentage point gain in energy efficiency for this single class (non-CFC chillers) of refrigeration equipment," says a new technical paper from NIST.

For a copy of this paper (26-01), contact Sarabeth Harris, NIST, MC104, Boulder, CO 80305-3328; (303) 497-3237; sarabeth The REFPROP database may be ordered via the World Wide Web at

Media Contact: Fred McGehan, (303) 497-3246;
COPYRIGHT 2001 National Institute of Standards and Technology
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2001, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

Article Details
Printer friendly Cite/link Email Feedback
Title Annotation:National Institute of Standards & Technology
Publication:Journal of Research of the National Institute of Standards and Technology
Article Type:Brief Article
Geographic Code:1USA
Date:Sep 1, 2001
Previous Article:NIST uncovers potential problem for semiconductor lithography. (News Briefs).
Next Article:New security standard for federal agencies effective in November. (News Briefs).

Related Articles
Non-electric chillers: safe alternative.
Note to Readers.
Message From Past Chief Editor.
Message from the chief editor.
NIST offers online metrology resource for electronics manufacturers. (News Briefs).
NIST publishes 2001 Edition of SP 330. (News Briefs).
NIST updates health care community on IT security work.
NIST hosts groundbreaking voting standards symposium.

Terms of use | Copyright © 2018 Farlex, Inc. | Feedback | For webmasters