储热型热气旁通除霜循环参数与性能优化研究

鲁思芸; 刘占斌; 李明佳; 李梦杰

doi:10.11949/0438-1157.20260575

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储热型热气旁通除霜循环参数与性能优化研究

热力学 | 更新时间：2026-06-24

- 储热型热气旁通除霜循环参数与性能优化研究
- Research on cycle parameters and performance optimization of thermal storage assisted hot gas bypass defrosting
- 化工学报 2026年
- 作者机构：
  
  1.西安交通大学能源与动力工程学院，陕西西安 710049
  2.北京理工大学非硅微纳制造工业和信息化部重点实验室，北京 100081
  3.西安交通大学国家储能技术产教融合创新平台（中心），陕西西安 710049
- 作者简介：
  
  鲁思芸（2001—），女，博士研究生，siyunlu@xjtu.edu.cn
  刘占斌（1982—），男，博士，正高级工程师，zhanbinliu@xjtu.edu.cn
- 基金信息：
  
  国家重点研发计划资助(2023YFB2406500);国家自然科学基金项目(52293413)
- DOI：10.11949/0438-1157.20260575
  中图分类号： TB 657.4
- 收稿：2026-04-22，
  
  修回：2026-06-23，
  
  录用：2026-06-24，
- 稿件说明：
移动端阅览
鲁思芸, 刘占斌, 李明佳, 等. 储热型热气旁通除霜循环参数与性能优化研究[J/OL]. 化工学报, 2026.

LU Siyun, LIU Zhanbin, LI Mingjia, et al. Research on cycle parameters and performance optimization of thermal storage assisted hot gas bypass defrosting[J/OL]. CIESC Journal, 2026.
鲁思芸, 刘占斌, 李明佳, 等. 储热型热气旁通除霜循环参数与性能优化研究[J/OL]. 化工学报, 2026. DOI： 10.11949/0438-1157.20260575.

LU Siyun, LIU Zhanbin, LI Mingjia, et al. Research on cycle parameters and performance optimization of thermal storage assisted hot gas bypass defrosting[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-1157.20260575.

摘要

制冷系统用除霜技术中电加热直接除霜能耗过高，常规热气除霜在低环境温度下供热不足。故以风冷冰箱为对象探索新型高效热气旁通除霜技术，通过建立制冷与旁通除霜循环热力学模型，研究了不同热气旁通循环的除霜性能，提出了更优的热辅助旁通除霜循环。结果表明：在不同环境温度下，通过优化匹配压缩机转速与旁通气体热补偿可有效降低能耗。当除霜时间为30 min、环境温度为16 ℃时，储热辅助压缩机出口热气旁通除霜循环的除霜性能系数较其他热气旁通除霜循环可提高67.1%~124.6%，即除霜能耗降低了40.2%~55.5%。同时，当环境温度为32 ℃时，该循环仍可实现良好的除霜与节能效果。该研究结果为储热型热气旁通除霜循环的优化设计提供了依据，具有重要的工程应用价值。

Abstract

Among defrosting techniques for refrigeration systems

electric heating direct defrosting consumes excessive energy

while conventional hot gas bypass defrosting suffers from insufficient heating supply at low ambient temperatures

leading to deteriorated system performance and reduced energy efficiency. This study develops thermodynamic models for different hot gas bypass defrosting cycles for refrigerators. The reliability of the model parameter settings is verified through whole-machine refrigerator experiments. The defrosting performances of the basic compressor outlet hot gas bypass defrosting (BCOMP_HGBD) and basic condenser outlet hot gas bypass defrosting (BCOND_HGBD) cycles are compared under ambient temperatures of 16  ℃ and 32  ℃

with compressor speeds ranging from 1200 to 4500  rpm. Their limitations

specifically the insufficient defrosting heat at low ambient temperatures

are analyzed. Based on these findings

two configurations are proposed: electric auxiliary condenser outlet hot gas bypass defrosting (ECOND_HGBD) and thermal storage assisted compressor outlet hot gas bypass defrosting (TCOMP_HGBD). Their application strategies and defrosting performance are evaluated by optimizing the matching between compressor speed and bypass gas thermal compensation. The results show that the TCOMP_HGBD cycle with C18 paraffin delivers the best performance. Under a 30-minute defrosting limit at 16  ℃

its coefficient of defrosting performance is 67.1~124.6% higher than that of other HGBD cycles

corresponding to a 40.2~55.5% reduction in energy consumption. The findings provide a basis for the optimal design of thermal storage hot gas bypass defrosting cycles and hold significant value for engineering applications.

关键词

Keywords

references

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