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Major Energy Savings in Brewing and Drinks Processing with PDX •F.R.ShaIpe and GJ.Freeman A novel, patented steam injection system called "PDX"may offer opportunlties and cost reductions ln the energy intensive processes in brewing.These processes indude wort boiling and in-place cleaning, and possibly mlashing, Pasteurisation and cereal cooking. The PDX has the abiHty to pump,mix and heat in one simple unit operation. Heat input by direct steam injection is more efficient than indirect heating and, in addition, the PDX unit is an hygienic, "clean bore¡±pipe fitting that requires very little cleaning. At this time, wort boiling and in-place cleaning have been successfully employed on the large scale.
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