The Trinity Mirror Group print works on Oldham is one of the UK’s largest newspaper printers. The nine presses in the facility produce around 1million papers every day, including the Independent, the Daily Mirror and a range of local, regional and sports titles. Printing on this scale does not come cheap in energy terms, however. The plant’s annual electricity bill is in the order of £1.5millon. With energy prices on the rise, and a strong desire to improve environmental performance and reduce its carbon footprint, the plant’s management has recently embarked on a project to cut energy use substantially.
Several days prior to our visit, during a cold winter evening, the lead air compressor in one mechanical room tripped off (apparently due to a fouled intake filter and low air flow through the machine). A crucial situation then developed: The "stand-by" unit did not start. Maintenance folks had to be called in to get a compressor running. That delay caused low plant air pressure, production curtailment and some defective product. They had yet to determine the conditions that caused the "no-start".
The primary objective of this case study is to illustrate the process in which industrial facilities can qualify for energy incentives on projects that reduce the energy usage of their compressed air system.
Most printing facilities use vacuum for one process or another. I recently spoke with Jesse Krivolavek, (a vacuum system efficiency specialist with IVS, Inc.) about his recent adventures in the world of printing.
This article will focus on a compressed air system assessment done at a printing facility in Canada. The energy costs at the time, in Manitoba, were $0.025 per kWh and the installation was of just 65 horsepower of air compressors.
Compressed Air Best Practices interviewed Michael D. Manzella. Mr. Manzella is a Senior Vice President, Environmental, Health, Safety and Quality (EH&S), and also the Chief Sustainability Officer for RR Donnelley (RRD).
This commercial printing facility is located in the Northeastern part of the U.S. Like most facilities, the plant has seen many changes over the years.