Variable-speed screw chiller
The YORK YVWA water-cooled screw chiller by Johnson Controls.
Johnson Controls has introduced the YORK YVWA water-cooled screw chiller. The design of this chiller, with energy-saving variable-speed technology, helps cut energy costs and carbon emissions by as much as 30%. The variable-speed drive saves energy during the 99% of operating hours spent at off-design conditions, when building loads and/or tower-water temperatures are lower. The YVWA increases sustainability by using HFC-134a refrigerant, which has zero ozone-depletion potential and no phaseout date. Its innovative design reduces the number of potential leak points by 35%. In addition, the company’s falling-film evaporator reduces the chiller’s refrigerant charge by as much as 30% compared to conventional designs.
Johnson Controls Inc.
Annual Salary Survey
After almost a decade of uncertainty, the confidence of plant floor managers is soaring. Even with a number of challenges and while implementing new technologies, there is a renewed sense of optimism among plant managers about their business and their future.
The respondents to the 2014 Plant Engineering Salary Survey come from throughout the U.S. and serve a variety of industries, but they are uniform in their optimism about manufacturing. This year’s survey found 79% consider manufacturing a secure career. That’s up from 75% in 2013 and significantly higher than the 63% figure when Plant Engineering first started asking that question a decade ago.