HVAC heat exchanger coils
Heat exchanger coils benefit from smaller diameter copper tubes
The International Copper Assn. (ICA) has announced a heat exchanger coil technology that benefits from smaller diameter copper tubes. Heat transfer from the refrigerant to the tube wall is more effective inside copper tubes with diameters smaller than the conventional diameter. Consequently, coils can be made less bulky and air conditioners with higher energy efficiency can be made smaller and lighter. Coils made of conventional copper tubes are a proven technology with a long, successful, field-tested history. The new coils provide the high durability and performance that is expected from copper tubes but they use less raw material.
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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.