NIST develops energy efficient cooling

November 18, 2005

A National Institute of Standards and Technology scientist has developed a way to improve energy efficiency in cooling large commercial buildings.

The method, if confirmed through experiments with full-scale chiller systems, could save as much as 1 percent of the 320 billion kilowatt hours of electricity now used annually to cool such buildings. That's an equivalent 920,000 barrels of oil each day, said Mark Kedzierski, the NIST mechanical engineer who developed the technique.

The advance builds on past NIST research designed to optimize mixtures of chiller refrigerants with lubricants. The researchers discovered that some lubricants, when injected in small amounts, can significantly enhance evaporator heat transfer, increasing the efficiency of chillers.

Studying the method more closely, they found the most efficient heat transfer occurred when the added oil's surface tension, viscosity, composition and chemical characteristics complemented those of the chiller's base lubricant.

The process is described online at the Prior Art Database, ip.com.

Copyright 2005 by United Press International

Explore further: Nanoparticle Research Points to Energy Savings

Related Stories

Nanoparticle Research Points to Energy Savings

July 23, 2008

(PhysOrg.com) -- Adding just the right dash of nanoparticles to standard mixes of lubricants and refrigerants could yield the equivalent of an energy-saving chill pill for factories, hospitals, ships, and others with large ...

Recommended for you

Inferring urban travel patterns from cellphone data

August 29, 2016

In making decisions about infrastructure development and resource allocation, city planners rely on models of how people move through their cities, on foot, in cars, and on public transportation. Those models are largely ...

NASA team probes peculiar age-defying star

August 29, 2016

For years, astronomers have puzzled over a massive star lodged deep in the Milky Way that shows conflicting signs of being extremely old and extremely young.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.