Research Commons
      • Browse 
        • Communities & Collections
        • Titles
        • Authors
        • By Issue Date
        • Subjects
        • Types
        • Series
      • Help 
        • About
        • Collection Policy
        • OA Mandate Guidelines
        • Guidelines FAQ
        • Contact Us
      • My Account 
        • Sign In
        • Register
      View Item 
      •   Research Commons
      • University of Waikato Research
      • Science and Engineering
      • Science and Engineering Papers
      • View Item
      •   Research Commons
      • University of Waikato Research
      • Science and Engineering
      • Science and Engineering Papers
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      An investigation of milk powder deposition on parallel fins

      Walmsley, Timothy Gordon; Walmsley, Michael R.W.; Atkins, Martin John; Neale, James R.
      Thumbnail
      Files
      An investigation of milk powder deposition.pdf
      765.6Kb
      CHEMECA'12 - An Investigation of Milk Powder Deposition on Parallel Fins - Sep 2012.pdf
      Accepted version, 1.985Mb
      Link
       www.chemeca2012.com
      Citation
      Export citation
      Walmsley, T. G., Walmsley, M. R. W., Atkins, M. J., & Neale, J. R. (2012). An investigation of milk powder deposition on parallel fins. Presented at the Annual Conference of Australian and NZ Chemical Engineers, Wellington, NZ, 23- 26 September 2012.
      Permanent Research Commons link: https://hdl.handle.net/10289/9010
      Abstract
      One method to reduce the energy consumption of industrial milk spray dryers is to recover waste heat from the exhaust dryer air. A significant challenge associated with this opportunity is the air contains a small amount of powder that may deposit on the face and surfaces of a recuperator. This paper introduces a novel lab based test that simulates powder deposition on a bank of parallel plate fins at exhaust dryer air conditions. The fin bank acts like the face of a typical finned tube row in a recuperator. The aim of this study is to look at how deposition on the front of fins is affected by the air conditions. Results show similar characteristics to other milk powder deposition studies that exhibit a dramatic increase in deposition once critical stickiness levels are reached. As powder deposits on the face of the fins, the pressure drop across the bank increases until eventually an asymptote occurs, at which point the rates of deposition and removal are similar. For very sticky conditions, deposition on the face of the fins can cause a rise in the pressure drop by as much as 65%. The pressure drop has also been successfully related to the percentage of open frontal area of the fins with and without deposition. Deposition inside and at the rear of the fin bank was found to be minimal.
      Date
      2012-09-23
      Type
      Conference Contribution
      Rights
      © 2012 copyright with the authors.
      Collections
      • Science and Engineering Papers [3124]
      Show full item record  

      Usage

      Downloads, last 12 months
      41
       
       

      Usage Statistics

      For this itemFor all of Research Commons

      The University of Waikato - Te Whare Wānanga o WaikatoFeedback and RequestsCopyright and Legal Statement