On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the Chi... On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……展开更多
The effect of the circulation fan installed in fresh food compartment on energy consumption of natural convective refrigerator/freezers (RFs) was experimentally studied. Five different RF models with different cycles ...The effect of the circulation fan installed in fresh food compartment on energy consumption of natural convective refrigerator/freezers (RFs) was experimentally studied. Five different RF models with different cycles were tested. The experimental results showed that the energy consumption of the single-loop cycle RF increased by 2.4%~3.8%, that of the bypass two-circuit cycle RF decreased by 1.0%, and that of the two-circuit cycle RF with its evaporators in parallel when the geometry parameters of refrigeration system and the refrigerant charge were not changed after the circulation fan was installed decreased by 3.3%. When the optimization on the refrigerant charge and the evaporator was carried out, the energy consumption of the single-loop cycle RF , the bypass two-circuit cycle RF and the two-circuit cycle RF with its evaporators in parallel, decreased by 1.0%~6.4%, 3.25% and 3.26% respectively. The present conclusions will provide a guideline to the optimum design for the RF with the circulation fan.展开更多
制冷剂流动噪声特别是毛细管喷发噪声是影响冰箱、冷柜等小型家用制冷设备声品质的主要因素,然而制冷剂流动噪声由于理论难度高、隐蔽性强,较少有专门的系统研究。基于制冷剂流动特性和流体网络理论开展了某型号冷冻柜的流动噪声发生机...制冷剂流动噪声特别是毛细管喷发噪声是影响冰箱、冷柜等小型家用制冷设备声品质的主要因素,然而制冷剂流动噪声由于理论难度高、隐蔽性强,较少有专门的系统研究。基于制冷剂流动特性和流体网络理论开展了某型号冷冻柜的流动噪声发生机理理论研究;基于理论分析结果,提出了一种改进的的毛细管过渡管结构设计方案;实验研究结果表明该改进设计措施能够有效抑制毛细管出口的喷射噪声,对整机噪声有约3 d B(A)的消声量。该研究成果丰富了小型制冷系统内部流动设计理论和噪声抑制机理,能够为指导小型家电制冷系统新过渡管消声装置设计和改善声品质提供重要参考。展开更多
文摘 On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……
文摘The effect of the circulation fan installed in fresh food compartment on energy consumption of natural convective refrigerator/freezers (RFs) was experimentally studied. Five different RF models with different cycles were tested. The experimental results showed that the energy consumption of the single-loop cycle RF increased by 2.4%~3.8%, that of the bypass two-circuit cycle RF decreased by 1.0%, and that of the two-circuit cycle RF with its evaporators in parallel when the geometry parameters of refrigeration system and the refrigerant charge were not changed after the circulation fan was installed decreased by 3.3%. When the optimization on the refrigerant charge and the evaporator was carried out, the energy consumption of the single-loop cycle RF , the bypass two-circuit cycle RF and the two-circuit cycle RF with its evaporators in parallel, decreased by 1.0%~6.4%, 3.25% and 3.26% respectively. The present conclusions will provide a guideline to the optimum design for the RF with the circulation fan.
文摘制冷剂流动噪声特别是毛细管喷发噪声是影响冰箱、冷柜等小型家用制冷设备声品质的主要因素,然而制冷剂流动噪声由于理论难度高、隐蔽性强,较少有专门的系统研究。基于制冷剂流动特性和流体网络理论开展了某型号冷冻柜的流动噪声发生机理理论研究;基于理论分析结果,提出了一种改进的的毛细管过渡管结构设计方案;实验研究结果表明该改进设计措施能够有效抑制毛细管出口的喷射噪声,对整机噪声有约3 d B(A)的消声量。该研究成果丰富了小型制冷系统内部流动设计理论和噪声抑制机理,能够为指导小型家电制冷系统新过渡管消声装置设计和改善声品质提供重要参考。
