Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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A Study on Cycle and Flow Analysis for Improvement of Energy Efficiency of a Heat Pump Dryer with Hot Bypass Gas and Air Dampers During Warm-up Stage

고온 우회가스 및 에어댐퍼 사용을 통한 히트펌프 건조기 승온단계 에너지 효율 향상을 위한 사이클 및 유동해석 연구

  • Park, Sang-Jun (Dept. of Mechanical Engineering, Graduate School, Kongju National University) ;
  • Hwang, Il-Sun (Dept. of Mechanical Engineering, Graduate School, Kongju National University) ;
  • Lee, Young-Lim (Dept. of Mechanical and Automotive Engineering, Kongju National University)
  • 박상준 (공주대학교 대학원 기계공학부) ;
  • 황일선 (공주대학교 대학원 기계공학부) ;
  • 이영림 (공주대학교 기계자동차공학부)
  • Received : 2012.06.21
  • Accepted : 2012.09.06
  • Published : 2012.09.30
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Abstract

Recently, instead of hot air type dryers that require a lot of heat, energy-efficient heat pump dryers have been used in various fields such as paper, textile, wood, food, etc. In this paper, the characteristics of heat pump cycle were theoretically evaluated with hot-gas bypass system to further improve the energy efficiency by minimizing the use of electric heaters in early warm-up stage of the dryers for frozen agricultural products. In addition, damper system that leads outside air to flow into the dryer were optimized to obtain extra heat for higher energy efficiency.

최근 많은 열에너지를 필요로 하는 열풍식 건조기 대신 에너지 효율이 높은 히트펌프 건조기가 제지, 섬유, 목재, 식품 등 다양한 분야에서 사용되고 있다. 본 논문에서는 냉동 농산물 건조 초기에 전기히터 사용을 최소화하여 에너지 효율을 높이고자, 압축기 출구 고온가스 우회 시스템에 대한 히트펌프 사이클 특성을 이론적으로 고찰하였다. 또한, 추가 열을 확보하기 위하여 외부공기 유입을 위한 댐퍼를 고려하였고 이의 최적화를 통해 에너지 효율 향상이 가능함을 보였다.

Keywords

References

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