NIST develops energy efficient cooling

Nov 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: Ancient Greek well yields rare wooden statue

add to favorites email to friend print save as pdf

Related Stories

Nanoparticle Research Points to Energy Savings

Jul 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 ...

Recommended for you

US state reaches deal to keep dinosaur mummy

57 minutes ago

North Dakota reached a $3 million deal to keep a rare fossil of a duckbilled dinosaur on display at the state's heritage center, where it will serve as a cornerstone for the facility's $51 million expansion, officials said ...

Jerusalem stone may answer Jewish revolt questions

3 hours ago

Israeli archaeologists said Tuesday they have discovered a large stone with Latin engravings that lends credence to the theory that the reason Jews revolted against Roman rule nearly 2,000 ago was because ...

Kung fu stegosaur

3 hours ago

Stegosaurs might be portrayed as lumbering plant eaters, but they were lethal fighters when necessary, according to paleontologists who have uncovered new evidence of a casualty of stegosaurian combat. The ...

User comments : 0