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Field investigations on frosting suppression for variable-capacity ASHPs through optimizing their operations and configurations

机译：通过优化其运营和配置对可变容量ASHP的冻结抑制的现场研究

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摘要

It has been known that for space heating ASHPs, different operations and configurations can influence their frosting suppression performances. However, the practical applications through varying the operations and configurations of ASHPs for frosting suppression has not been well documented. Therefore, in this paper, field investigations on frosting suppression for variable-capacity ASHPs through optimizing their operations and configurations are reported. The investigations were based on two multi-compressor ASHPs of the same size, one being conventional, and the other being optimized, with respect to their operations and configurations. The outdoor airflow rate and the surface area of outdoor coils of the optimized ASHP were twice as much as those of the conventional ASHP. By comparing the field measured results from the optimized ASHP with those from the conventional ASHP, it could be found that for the optimized ASHP, its frosting rate and frosting-defrosting loss efficiency could be reduced by 37.2% to 39.6%, and 31% to 34.2%, and its operating performances improved by 5% to 22%, respectively. Therefore, optimizing the operations and configurations of ASHPs would have significant potential for improving their frosting suppression performances, and consequently their actual operating performances under part-load conditions. (C) 2020 Elsevier B.V. All rights reserved.
机译：已知对于空间加热ASHP，不同的操作和配置可以影响其冻疮抑制性能。然而，通过改变用于磨损抑制的ASHP的操作和配置的实际应用并未充分记录。因此，报道了通过优化其运行和配置，对可变容量ASHP进行冻疮抑制的现场研究。研究基于两个相同大小的两个多压缩机ASHP，一个是常规的，另一个关于它们的操作和配置优化。优化的ASHP的室外气流率和室外线圈的表面积是传统ASHP的户外线圈的两倍。通过将测量结果与来自常规ASHP的常规ASHP的优化ASHP进行比较，可以发现，对于优化的ASHP，其脱毛速率和结霜除霜损失效率可能会降低37.2％至39.6％，31％至31％ 34.2％，其运行表现分别提高5％至22％。因此，优化ASHP的操作和配置将具有改善其结霜抑制性能的显着潜力，从而在部分负载条件下它们的实际操作性能。 （c）2020 Elsevier B.v.保留所有权利。

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  • 来源
    《Energy and Buildings》 |2020年第10期|110266.1-110266.13|共13页
  • 作者

    Liang Shimin; Wang Wei; Sun Yuying; Lin Yao; Luo Qing; Deng Shiming;

  • 作者单位

    Beijing Univ Technol Coll Architecture & Civil Engn Dept Bldg Environm & Facil Engn 100 Pingleyuan Rd Beijing 100124 Peoples R China|Qingdao Univ Technol Sch Environm & Municipal Engn Qingdao 266033 Peoples R China;

    Beijing Univ Technol Coll Architecture & Civil Engn Dept Bldg Environm & Facil Engn 100 Pingleyuan Rd Beijing 100124 Peoples R China|Beijing Univ Technol Key Lab Green Built Environm & Energy Efficient T Beijing 100124 Peoples R China;

    Beijing Univ Technol Coll Architecture & Civil Engn Dept Bldg Environm & Facil Engn 100 Pingleyuan Rd Beijing 100124 Peoples R China|Beijing Univ Technol Key Lab Green Built Environm & Energy Efficient T Beijing 100124 Peoples R China;

    Beijing Univ Technol Coll Architecture & Civil Engn Dept Bldg Environm & Facil Engn 100 Pingleyuan Rd Beijing 100124 Peoples R China|Beijing Univ Technol Key Lab Green Built Environm & Energy Efficient T Beijing 100124 Peoples R China;

    Beijing Univ Technol Coll Architecture & Civil Engn Dept Bldg Environm & Facil Engn 100 Pingleyuan Rd Beijing 100124 Peoples R China|Beijing Univ Technol Key Lab Green Built Environm & Energy Efficient T Beijing 100124 Peoples R China;

    Beijing Univ Technol Coll Architecture & Civil Engn Dept Bldg Environm & Facil Engn 100 Pingleyuan Rd Beijing 100124 Peoples R China|Hong Kong Polytech Univ Dept Bldg Serv Engn Kowloon Hong Kong Peoples R China;

  • 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

    Field investigation; Variable-capacity air source heat pump; Frosting suppression; Operation and configuration; Part-load condition;

    机译：现场调查;可变容量的空气源热泵;磨砂抑制;操作和配置;部分负载条件;

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