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An air flow resistance model for a pressure cooling system based on container stacking methods

차압예냉에서 청과물 상자의 적재방법에 따른 송풍저항 예측모델 개발

  • Kim, Oui-Woung (Division of Convergence Technology, Korea Food Research Institute) ;
  • Kim, Hoon (Division of Convergence Technology, Korea Food Research Institute) ;
  • Han, Jae-Woong (Division of Bio-Industry Engineering, Kongju National University) ;
  • Lee, Hyo-Jai (Division of Convergence Technology, Korea Food Research Institute)
  • 김의웅 (한국식품연구원 융합기술연구본부) ;
  • 김훈 (한국식품연구원 융합기술연구본부) ;
  • 한재웅 (공주대학교 생물산업기계공학전공) ;
  • 이효재 (한국식품연구원 융합기술연구본부)
  • Received : 2012.11.12
  • Accepted : 2013.06.24
  • Published : 2013.06.30

Abstract

The capacity of a pressure fan can be designed based on the air flow resistance of containers packed with fruits and vegetables in a pressure cooling system. This study was conducted to develop an air flow resistance model that was dependent on changes in the air flow rate and the method of stacking containers. The air flow resistance of a container packed with uniformly shaped balls was 1.5 times greater than the sum of the air flow resistance of a vacant container and that of a wire net container packed with only balls. In addition, the air flow resistance increased exponentially as the width of the stacks increased; however, the air flow resistance did not increase greatly as the length and height of the stacks increased, which indicates that the air flow resistance is primarily influenced by the width of the stack in the air flow direction. The air flow resistance in two lines of stacking was up to 17% less than that of the width of the stack. It was also possible to determine the air flow resistance using a function of the air flow resistance through a single container and develop a prediction model. A prediction model of air flow resistance that is dependent on the stacking method and the air flow resistance of a single container was developed.

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