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Energy Efficiency Improvement in a Coated Paper Line Using a Custom Back Surface Reflector

[+] Author Affiliations
Jay C. Rozzi, Scott D. Phillips

Creare Incorporated, Hanover, NH

Paper No. IMECE2009-13221, pp. 343-353; 11 pages
doi:10.1115/IMECE2009-13221
From:
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 6: Emerging Technologies: Alternative Energy Systems; Energy Systems: Analysis, Thermodynamics and Sustainability
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4379-6 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME

abstract

Paper-drying and coating processes consume significant amounts of energy. A single coated paper line in a New Page Corporation paper-making plant consumes approximately 1.7 MW of electrical power. Because of the poor efficiency of the infrared (IR) dryers used in this application, only 6% to 10% of the input power is utilized for moisture removal; the remainder of the energy input is lost as waste heat. The poor efficiency also impacts the quality of the paper sheet, resulting in poor control of the moisture profile and increased scrap. To address these issues, we developed a Back Surface Reflector (BSR) that captures thermal energy transmitted through the paper sheet and re-radiates it at wavelengths the paper can readily absorb. For coated 70 lb. paper, we demonstrated a 90% increase in the overall efficiency of the moisture removal process and an improvement in the paper quality. In this case, the energy saved in one month is enough to power five households for one year. These benefits translate to reduced energy costs and decreased scrap. In this paper, we will discuss the development of a simplified thermal model of the process, the completed benchtop experiments, and the results of our in-plant testing on a New Page paper line.

Copyright © 2009 by ASME

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