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首页> 外文期刊>Solar Energy >Experimental investigation on a novel air-cooled single effect LiBr-H_2O absorption chiller with adiabatic flash evaporator and adiabatic absorber for residential application
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Experimental investigation on a novel air-cooled single effect LiBr-H_2O absorption chiller with adiabatic flash evaporator and adiabatic absorber for residential application

机译：新型带绝热闪蒸器和绝热吸收器的风冷单效LiBr-H_2O吸收式制冷机的实验研究

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摘要

Air-cooled single effect LiBr-H2O absorption chiller has shown advantages in residential solar cooling applications. It can be driven by common non-focusing solar collectors, and save water, maintenance expense and space, due to the absence of cooling tower. However, there is no available small capacity commercial air-cooled LiBr-H2O absorption chiller yet, because of the crystallization risk and difficulty of miniaturization. In this work, a novel air-cooled single effect LiBr-H2O absorption chiller with adiabatic flash evaporator and adiabatic absorber was fabricated and tested. The secondary heat exchanging between refrigerant water and chilled water is avoided by introducing the adiabatic flash process, therefore the conventional chilled water circulation pump and the heat transfer pipes in evaporator are removed. In this way, it is capable of improving the COP and cooling capacity with a lower size and cost of material, as well as less electricity consumption. Furthermore, three sets of experiments were conducted with different operating conditions. The evaporation temperature at 8.6 degrees C can be achieved and it is able to control the indoor air temperature to 26.6 degrees C with a raised evaporation temperature at 14.5 degrees C when the ambient temperature is 35 degrees C. The cooling capacity and COP under low and high ambient temperature are 5.3 kW/0.72 and 4.6 kW/0.65, respectively. When the hot water temperature is raised from 80 degrees C to 90 degrees C, the thermal COP is ranged from 0.76 to 0.64. During the 9 h outdoor experiment, the average thermal COP of this prototype is 0.65. In addition, the average cooling capacity is about 5 kW and the average COPele of this prototype reaches 8.3 during the test.
机译：风冷单效LiBr-H2O吸收式制冷机在住宅太阳能制冷应用中显示出优势。由于没有冷却塔，它可以由普通的非聚焦式太阳能集热器驱动，并节省水，维护费用和空间。但是，由于存在结晶风险和小型化的困难，因此尚无可用的小容量商用风冷LiBr-H2O吸收式制冷机。在这项工作中，制造并测试了具有绝热闪蒸器和绝热吸收器的新型风冷单效LiBr-H2O吸收式制冷机。通过采用绝热闪蒸工艺，避免了制冷剂水与冷冻水之间的二次热交换，因此，省去了传统的冷冻水循环泵和蒸发器中的传热管。以此方式，能够以较低的尺寸和材料成本以及更少的电耗来改善COP和冷却能力。此外，在不同的操作条件下进行了三组实验。当环境温度为35摄氏度时，通过将蒸发温度提高到14.5摄氏度，可以达到8.6摄氏度的蒸发温度，并且能够将室内空气温度控制在26.6摄氏度。高环境温度分别为5.3 kW / 0.72和4.6 kW / 0.65。当热水温度从80摄氏度升高到90摄氏度时，热COP范围从0.76到0.64。在9小时的户外实验中，该原型的平均热COP为0.65。另外，在测试过程中，该原型机的平均制冷量约为5 kW，该原型机的平均COPele达到8.3。

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  • 来源
    《Solar Energy》 |2018年第1期|579-587|共9页
  • 作者

    Chen J. F.; Dai Y. J.; Wang H. B.; Wang R. Z.;

  • 作者单位

    Shanghai Jiao Tong Univ, Engn Res Ctr Solar Power & Refrigerat, MOE, Inst Refrigerat & Cryogen, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Engn Res Ctr Solar Power & Refrigerat, MOE, Inst Refrigerat & Cryogen, Shanghai 200240, Peoples R China;

    Shandong Normal Univ, Lishan Coll, Jinan, Shandong, Peoples R China;

    Shanghai Jiao Tong Univ, Engn Res Ctr Solar Power & Refrigerat, MOE, Inst Refrigerat & Cryogen, Shanghai 200240, Peoples R China;

  • 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
  • 关键词

    Air-cooled absorption chiller; Adiabatic flash; Solar air conditioning; Adiabatic absorption;

    机译：风冷吸收式制冷机;绝热闪蒸;太阳能空调;绝热吸收;

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