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.
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2012 Salary Survey
In a year when manufacturing continued to lead the economic rebound, it makes sense that plant manager bonuses rebounded. Plant Engineering’s annual Salary Survey shows both wages and bonuses rose in 2012 after a retreat the year before.
Average salary across all job titles for plant floor management rose 3.5% to $95,446, and bonus compensation jumped to $15,162, a 4.2% increase from the 2010 level and double the 2011 total, which showed a sharp drop in bonus.