来流不均匀性对冷凝器性能影响的数值研究 - 西安交通大学CFD-NHT .PDF

21 3 Vol.21 No.3 2007 9 Refrigeration and Air Conditioning Sep. 2007.16 1671-6612 2007 03-001-06 ∗1,2 1 2 (1. 710049; 2. 200135) τ τ TK32 A Numerical Investigation of Condensers with non-uniform air distribution Deng bin1,2 Tao wenquan1 Yu wangyang2 (1. State Key Lab of Multiphase Flow in Power Engineering , Xi’an Jiaotong University,Xi’an 710049, China; 2. Institute of Heat Transfer Technology, Golden Dragon Precise Copper Tube Group Inc.,200135, China ) Abstract Based on the steady state distributed parameters model of the condensers which was put forward in the previous related reference. The effect of different non-uniform air distribution different flow rate of the refrigerant, different refrigerant layout and different rows on the performance of the condensers are studied and some useful results are obtained. All the non-uniform air distribution make the performance of the condensers worse. The non-uniform degree can be measured by the non-uniform factor. When the non-uniform factor increase, the performance of the condensers become worse. All these research results can be applied to predict the influence on the performance of condensers when the inlet air distribution is non-uniform. Keywords Condensers; Numerical simulation; Non-uniform factor;Non-uniform air distribution 0 Fagan[1], Domansiki[2], Bensafi[3]