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Effect of door opening and defrost cycle on a freezer with phase change panels

机译:开门和除霜周期对带有相变面板的冰箱的影响

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摘要

An investigation into the effectiveness of phase change material (PCM) panels placed against the internal walls of a freezer to maintain stable temperatures in the presence of heat loads such as door openings, defrosting, and loss of electrical power was carried out. Temperature response was studied during loss of power, a defrost cycle lasting 30 min, and a door opening scheme of 13 door openings over an 11 h period. This PCM system has significantly decreased the rate of temperature increase inside the freezer during defrosting and power loss. Energy consumption was measured during steady operation, a defrost cycle of 30 min, and a scheme of eight door openings at 40 min intervals. It was found that heat loads caused greater energy consumption, and that the presence of PCM during defrosting and door openings resulted in slightly lower energy consumption compared to without PCM.
机译:对相变材料(PCM)面板抵靠在冰箱内壁上以在存在热负荷(例如门开,除霜和电力损失)的情况下保持稳定温度的有效性进行了研究。研究了断电,持续3​​0分钟的除霜周期以及11小时内13个门的开门方案期间的温度响应。该PCM系统在除霜和功率损失期间已大大降低了冷冻机内部的温度升高速度。在稳定运行,30分钟的除霜周期以及间隔40分钟的八个门打开方案中测量能耗。已经发现,热负荷导致更大的能量消耗,并且与没有PCM相比,在除霜和门打开期间PCM的存在导致能量消耗略低。

著录项

  • 来源
    《Energy Conversion & Management》 |2010年第12期|P.2698-2706|共9页
  • 作者

    B. Gin; M.M. Farid; P.K. Bansal;

  • 作者单位

    Department of Chemical and Materials Engineering, The University of Auckland, 20 Symonds St. Auckland 1142, New Zealand;

    rnDepartment of Chemical and Materials Engineering, The University of Auckland, 20 Symonds St. Auckland 1142, New Zealand;

    Department of Mechanical Engineering, The University of Auckland, 20 Symonds St, Auckland 1142, New Zealand;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    phase change material; freezer; energy consumption; door opening; defrost; power loss;

    机译:相变材料冰箱;能源消耗;门开除霜电力流失;

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