管翅式换热器管路布置优化设计的数值研究-西安交通大学CFD-NHT.PDF

2007 26 6 CHEMICAL INDUSTRY AND ENGINEERING PROGRESS ·893 · ( 710049) 0.8 6112 TK 172 A 100066132007 Numerical study on optimization design of circuit arrangement for tube-fin heat exchanger TAO Yubing HE Yaling TANG Lianwei TAO Wenquan State Key Laboratory of Multiphase Flow in Power EngineeringSchool of Energy and Power EngineeringXi’an Jiaotong University Xi’an 710049 ShaanxiChina Abstract The numerical study on the performance of a double flow-pass tube-fin heat exchanger was performed with different air and refrigerant inlet parameters. An optimization design of circuit arrangement was presented and was validated by the numerical simulation results. The results showed that there was an optimal ratio between the two flow-pass tube diameters in the heat exchangers. In this paper the optimal ratio was 0.8 and with this optimal ratio the heat transfer performance of the heat exchanger could be enhanced by 6%~11%at the same time the pressure drop of the air side could be decreased by 2%. Key words fin-and-tube heat exchanger; circuit arrangement; optimization design; numerical simulation [1] 1 1 a 2007 02 10 2007 04 02 973 2007CB206902 (No.306014)