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Experimental Analysis of the Freezing Process in a Horizontal Plate Freezer With CO_2 as Refrigerant in a Cascade Refrigeration System

机译:级联制冷系统中以CO_2为制冷剂的卧式平板冷冻机的冷冻过程实验分析

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摘要

An experimental evaluation of a cascade refrigeration system prototype using NH_3 and CO_2 as refrigerants has been performed. The prototype is used to supply a 9-kW refrigeration capacity to a horizontal plate freezer at an evaporation temperature of-50℃ as design conditions. The prototype includes a specific control system and a data acquisition system. The article describes the prototype and the experimental program carried out to study the freezing process in the horizontal plate freezer. The experimental results include the freezing time, the temperature evolution in the product to be frozen, the refrigeration capacity of the facility, the electric power of the compressors, the coefficient of performance (COP) of the low-and high-temperature systems, and the overall system COP. The results obtained would confirm that the use of CO_2 in plate freezers represents a viable alternative to refrigerants currently in use.
机译:对使用NH_3和CO_2作为制冷剂的级联制冷系统原型进行了实验评估。作为设计条件,该原型用于在蒸发温度为-50℃的情况下为卧式平板冷冻机提供9千瓦的制冷能力。该原型包括一个特定的控制系统和一个数据采集系统。本文介绍了用于研究卧式平板冷冻机中冷冻过程的原型和实验程序。实验结果包括冷冻时间,冷冻产品中的温度变化,设备的制冷能力,压缩机的电功率,低温和高温系统的性能系数(COP),以及整个系统COP。所获得的结果将证实,在板式冷冻机中使用CO_2可以替代当前使用的制冷剂。

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  • 来源
    《Heat Transfer Engineering》 |2012年第15期|p.1170-1176|共7页
  • 作者单位

    Area de Maquinas y Motores Termicos, E.T.S. de Ingenieros Industrials, University of Vigo, Campus Lagoas-Marcosende No. 9, 36310 Vigo, Spain;

    Area de Maquinas y Motores Termicos, E.T.S. de Ingenieros Industrials, University of Vigo, Vigo, Spain;

    Area de Maquinas y Motores Termicos, E.T.S. de Ingenieros Industrials, University of Vigo, Vigo, Spain;

    Area de Maquinas y Motores Termicos, E.T.S. de Ingenieros Industrials, University of Vigo, Vigo, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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