We’ve got some catchy headlines that should draw you into this issue, and the when you get to the articles, you won’t be disappointed. You’re going to learn more than one new thing by the time you reach the last page. And here’s a closer look to further entice you.

It’s a pretty good bet that everyone likes something useful that’s also free. How about cold air? It’s plentiful, free and certainly useful. Graham Whitmore, president of Motivair Corp., Amherst, N.Y., gives a whole different take on what so many of us complain about: cold weather. If you live in a climate that puts you in the deep freeze a few months a year, then “Free Cooling Using Winter’s Chill’ is a must-read. Whitmore tells you how a winter economizer lets a chiller make use of cold outside temperatures. An added bonus: the technology extends the useful life of the chiller equipment by selectively reducing its operating hours.

No matter which clime you work in, “Breathing New Life into Old Compressors” has some ideas for you. Author Hank McConnell, vice president of engineering operations, M&M Systems Inc., Ormand Beach, Fla., has a solution for plant operators who want to get better control of their engine rooms but are stymied by outdated electronics on their compressor packages. Microprocessor controls for retrofitting can solve the problem. Benefits include energy savings, improved monitoring and equipment protection, a common user interface and improved communication with newer plant controls.

In “The Dirty Truth About Refrigeration Systems,” Ron Odom, P.E., director of engineering at Refrigeration Systems Co., Columbus, notes that while suppliers ensure that both new and recycled refrigerants are contaminant-free before shipping, sometimes contaminants enter the system by other means. Odom explains why it is critical to start with a clean refrigeration system and implement technology designed to keep it that way.

It’s not only refrigerants that need to be clean and free of contamination. Process cooling operations often demand an uninterrupted stream of filtered water. If the water supply is unreliable, contaminated or maintenance-intensive, processes suffer. In “Cleaner Water with Centrifugal-Force Filtration,” Martine Mennard, marketing manager at Sonitec Inc., Holyoke, Mass., explains how centrifugal sand filtration can help avoid problems with diminished product quality, process interruptions and high maintenance costs.

Pumps are energy-intensive machines that can be expensive to operate. In fact, a pump’s energy costs can constitute 90 percent of its lifecycle cost over a 10-year period. As Gunnar Hovstadius, Ph.D., the director of technical services for pumps, Industrial Efficiency Alliance, Portland, Ore., explains, optimizing your pump operation by implementing a continuous energy-improvement program can reduce energy, operation and maintenance costs while improving productivity, system reliability and safety. Hovstadius outlines a five-step process.

Another high energy user in process applications is industrial freezers, so effective, space-saving freezer designs are important. As Devon Barnes, business development manager at Stellar Freezing Systems, Jacksonville, Fla., explains in “Vertical Cooling,” low-tension spiral belt conveyor technology allows a large quantity of conveying belt to be used in a relatively small footprint. The rugged design can be leveraged for cooling and freezing applications where product must be transported vertically up or down.