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ENERGY PERFORMANCES USING AMMONIA AS REFRIGERANTIN A LARGE SUPERMARKET

机译：使用氨作为制冷剂的能源表现大型超市

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摘要

Commercial refrigeration systems for large and medium size supermarkets are known as highlyrnemissive systems. Typically the emissions range from 15 up to 30 % of the refrigerant charge perrnyear. Those high emission rates are related to the large number of fittings, expansion valves, andrnpoorly accessible refrigerant lines implying difficult leak tightness control. Moreover, oil returnrnmay be difficult, specially for large supermarkets, leading to possible significant oil flush comingrnback to the compressors, leading to compressor failures, and emissions during servicing [1].rnIn order to limit refrigerant emissions, indirect systems are seen as a key option in order to lowerrnthe refrigerant charge and to avoid any refrigerant emissions in the sales area. Indirect systems alsornallow broadening the refrigerant choice but, one significant issue remains: are these systems asrnefficient as direct expansion systems?rnIn this paper, performances measurement of ammonia indirect systems operating in a largernsupermarket are presented. A comparison with typical direct expansion systems shows that energyrnefficiency of both systems are in the same order of magnitude.
机译：用于大型和中型超市的商业制冷系统被称为高辐射系统。通常，排放量为每年制冷剂充注量的15％至30％。这些高排放率与大量配件，膨胀阀和难以接近的制冷剂管线有关，这意味着难以控制密封性。此外，回油可能很困难，特别是对于大型超市而言，可能导致大量的冲洗油回流到压缩机，导致压缩机故障以及维修期间的排放[1]。为了限制制冷剂的排放，间接系统被视为关键为了降低制冷剂充注量并避免销售区域内的任何制冷剂排放而选择。间接系统也允许扩大制冷剂的选择范围，但仍然存在一个重要问题：这些系统是否像直接膨胀系统那样效率低？本文提出了在大型超市中运行的氨间接系统的性能测量方法。与典型的直接膨胀系统的比较表明，两个系统的能量效率处于相同的数量级。

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  • 来源
  • 会议地点 Ohrid(MK)
  • 作者

    Assaad Zoughaib; Denis Clodic;

  • 作者单位

    Ecole des Mines de Paris, Center for Energy and Processesrn60, boulevard Saint-Michel – F 75272 Paris Cedex 06rnFax +33 1 46 34 24 91, e-mail: assaad.zoughaib@ensmp.fr;

    Ecole des Mines de Paris, Center for Energy and Processesrn60, boulevard Saint-Michel – F 75272 Paris Cedex 06;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 制冷工程;
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