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本文提出了一种用于冰箱或冰柜系统的扁管式冷凝器的结构设想,建立了现有板管式和新型扁管式冷凝器的数理模型,并基于有限差分法和等效热阻法分别编写了相应的热力仿真程序,对两种冷凝器的热力性能进行了详细的比较分析。结果表明:新型扁管式冷凝器的散热性能比现有板管式提高大约25%,具有使冰箱系统的能效比进一步提高的潜能。另外,本文还深入研究了扁管孔数、扁管孔径、扁管宽度、制冷剂流量等参数对扁管式冷凝器散热特性的影响规律,发现制冷剂流量和扁管宽度是影响扁管冷凝器散热性能的两个重要因素,对未来扁管式冷凝器的优化设计提供了必要的理论基础。
In this paper, a novel concept of flat-tube condenser for refrigerator or freezer system is proposed. The mathematical model of the existing flat-tube condenser and the new flat-tube condenser is established. Based on the finite difference method and the equivalent thermal resistance method The corresponding thermodynamic simulation programs were prepared respectively, and the thermodynamic performance of the two condensers was compared and analyzed in detail. The results show that the heat dissipation performance of the new flat-tube condenser is about 25% higher than that of the existing tube-type condenser, which has the potential to further improve the energy efficiency of the refrigerator system. In addition, this paper also in-depth study of the flat tube hole number, flat tube aperture, flat tube width, refrigerant flow and other parameters on the flat tube condenser heat dissipation characteristics of the law and found that the refrigerant flow and flat tube width is the impact of flat tube condensation Two important factors of the heat dissipation performance of the device provide the necessary theoretical basis for the optimal design of the flat tube condenser in the future.