CAJ | 학술논문

我国的地铁建设正处于高速发展期,但目前典型地铁列车空调制冷系统的能效比只有2.2~2.3,远低于同类工况下住宅空调制冷系统的能效水平。针对此问题,先建立了某地铁空调制冷系统模型,仿真与系统测试结果吻合良好。然后通过详细的仿真分析,改进蒸发器和冷凝器的制冷剂流路设计﹑采用小排量高能效比压缩机等方法,使得系统在冷量和成本基本不变的情况下能效比提升了21.7﹪。最后,研究了制冷剂 R410A 替代 R407C 的系统性能变化,系统能效比可进一步提升11.3﹪,达到3以上。该研究方法及结果对于设计高效节能的地铁列车空调制冷系统具有参考价值。
아국적지철건설정처우고속발전기,단목전전형지철열차공조제랭계통적능효비지유2.2~2.3,원저우동류공황하주택공조제랭계통적능효수평。침대차문제,선건립료모지철공조제랭계통모형,방진여계통측시결과문합량호。연후통과상세적방진분석,개진증발기화냉응기적제랭제류로설계﹑채용소배량고능효비압축궤등방법,사득계통재랭량화성본기본불변적정황하능효비제승료21.7﹪。최후,연구료제랭제 R410A 체대 R407C 적계통성능변화,계통능효비가진일보제승11.3﹪,체도3이상。해연구방법급결과대우설계고효절능적지철열차공조제랭계통구유삼고개치。
Though metro in China today is booming, the typical refrigeration system for metro train air_conditioning is at quite lower ener_gy efficiency level (COP =2.2 _2.3) in comparison with the residential systems under the same operating conditions.A refrigeration system model was developed to predict the metro train air_conditioning system performance.The predictions agreed well with the experi_mental data.Based on comprehensive modeling and analysis, the refrigerant circuitries of condenser and evaporator were optimized and smaller capacity compressor of higher COP was adopted.Consequently, the optimized system COP increased 21.7﹪ at almost the same cooling capacity and cost.At last, the refrigerant R407C was replaced by R410A and the system were accordingly redesigned, which brought additional 11.3﹪ COP increase and achieved 3.The present method and results could be valuable for designing high performance air_conditioning system of the metro train.