采用并联双制冷系统的立式风冷陈列柜的性能研究
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摘要
商用冷柜能效新标准(GB26920.2—2015《商用制冷器具能效限定值和能效能级第二部分:自携冷凝机组商用冷柜》)在2017年正式实施,要求商用冷柜进一步节能降耗。本文通过研究商用冷柜的产品特性,对其进行技术改进,提出了一种并联双压缩机制冷系统,并将其应用在商用立式风冷陈列柜上,试验探究并联双压缩机制冷系统对陈列柜性能的影响及降低其耗电量的方法。试验结果表明,通过合理的设计并联双制冷系统,同时对陈列柜毛细管长度及充注量,双压缩机控制策略和风机运行策略3方面进行优化,最终陈列柜在冷冻工况下的耗电量仅有5.4 kW·h/24 h,在冷藏工况下耗电量为1.15 kW·h/24 h,分别是新国标中一级能效规定值的60%和72%。
The new energy efficiency standards for commercial freezers were officially implemented in 2017,and the energy consumption of the commercial freezers needs further reduction.This paper studies the operation characteristics of commercial freezers and obtains technical improvements.A parallel refrigeration system is proposed in the paper and applied to the commercial vertical air-cooled display cabinet to explore the effect of the new system on the performance of the freezer and to obtain the methods of reducing the power consumption.The experimental results show that through the rational design of the parallel refrigeration system and optimizing the control strategy of the compressor and the fan,the power consumption of the display cabinet at the standard freezing and refrigeration test conditions are 5.4 kW·h/24 h and 1.15 kW·h/24 h respectively,which are 60% and 72% of the specified energy consumption measured by the first level energy efficiency according to the new national standard.Thus,the energy saving effect of the parallel refrigeration system is remarkable.
The new energy efficiency standards for commercial freezers were officially implemented in 2017,and the energy consumption of the commercial freezers needs further reduction.This paper studies the operation characteristics of commercial freezers and obtains technical improvements.A parallel refrigeration system is proposed in the paper and applied to the commercial vertical air-cooled display cabinet to explore the effect of the new system on the performance of the freezer and to obtain the methods of reducing the power consumption.The experimental results show that through the rational design of the parallel refrigeration system and optimizing the control strategy of the compressor and the fan,the power consumption of the display cabinet at the standard freezing and refrigeration test conditions are 5.4 kW·h/24 h and 1.15 kW·h/24 h respectively,which are 60% and 72% of the specified energy consumption measured by the first level energy efficiency according to the new national standard.Thus,the energy saving effect of the parallel refrigeration system is remarkable.
引文
[1]肖杨,成建宏,刘小朋.自携冷凝机组商用冷柜能效标准解读[J].制冷与空调,2017(11):76-80.
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[5]新全.恩布拉科Fullmotion全驱变频压缩机全球产能扩张[J].电器,2014(6):30-31.
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[7]赵亚丽.用于冰箱系统的双压缩机制冷系统:北京,CN203980771U[P].2014.
[8]丁国良.提高冷冻能力的双制冷回路冷藏冷冻箱:上海,CN1560546 A[P].2005.
[9]张成全,施骏业,陈江平.采用微通道冷凝器的无霜风冷冰箱系统性能提升[J].制冷学报,2017,38(3):43-49.
[10]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.制冷陈列柜第2部分:分类、要求和试验条件:GB/T21001.2-2015[S].北京:中国标准出版社,2015:9.
[2]张华俊,王俊,李洪峻,等.商用陈列柜选用机组探讨[J].制冷与空调,2001,1(4):46-50.
[3]徐延辉.压缩机选型对电冰箱实际使用性能的影响[J].制冷与空调,2012,12(5):51-54.
[4]王维,王瑞,秦宗民.采用变频压缩机的风冷冰箱系统性能研究[J].制冷学报,2013,34(6):90-96.
[5]新全.恩布拉科Fullmotion全驱变频压缩机全球产能扩张[J].电器,2014(6):30-31.
[6]朱启武.双压缩机冰箱的研制及创新[C]//中国制冷学会2005年制冷空调学术年会论文集,中国云南昆明:出版社不详,2005:116-121.
[7]赵亚丽.用于冰箱系统的双压缩机制冷系统:北京,CN203980771U[P].2014.
[8]丁国良.提高冷冻能力的双制冷回路冷藏冷冻箱:上海,CN1560546 A[P].2005.
[9]张成全,施骏业,陈江平.采用微通道冷凝器的无霜风冷冰箱系统性能提升[J].制冷学报,2017,38(3):43-49.
[10]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.制冷陈列柜第2部分:分类、要求和试验条件:GB/T21001.2-2015[S].北京:中国标准出版社,2015:9.