R410A空调系统采用双排分液冷凝器的替代性研究

Investigation on a R410A Air Conditioning System With Substitution of Double-Row Liquid-Vapor Separation Condenser

本文以R410A家用分体式空调机为原型,以新型的双排分液冷凝器,构建分液冷凝空调系统,并研究其系统匹配及综合性能。采用理论优化管程布置的双排分液冷凝器,实验研究了在毛细管长度为300 mm^800 mm和制冷剂充注量为950 g^1350 g条件下,分液冷凝空调系统性能的变化规律,并与原型系统作对比。研究表明,在制冷名义工况下,较原型系统,最优分液冷凝系统的能效比(energy efficiency ratio,EER)和制冷量高5.1%和4.2%,所需的毛细管长度少16.7%,而制冷剂充注量高8.6%。

This study employs a R410 A air conditioning system as the baseline. A new double-row liquid-vapor separation condenser（D-LSC） system, which substitutes the novel D-LSC with the original double-row serpentine condenser（D-SC） of the system, is constructed to investigate the matching and comprehensive performance of the new system. By employing the D-LSC with theoretical optimal tube pass scheme, the comprehensive performance of D-LSC air conditioning system is studied at capillary length of 300 mm to 800 mm and refrigerant charge of 950 g to 1350 g. The results show that the energy efficiency ratio（EER） and refrigerating capacity of the optimal D-LSC air conditioning system are 5.1% and 4.2% higher respectively than those of the optimal D-SC air conditioning system, under the condition of nominal refrigeration condition. The required capillary length of the D-LSC air conditioning system is 16.7% shorter than that of the D-SC air conditioning system, but the required refrigerant charge of the D-LSC air conditioning system is 8.6% greater.