H-type finned tube heat exchangers have been widely used in boilers and waste heat recovery devices due to their advantages of wear resistance and anti-fouling. In order to improve the energy-saving effect, the flow and heat transfer characteristics of H-type finned tube heat exchangers with different tube bundle arrangements were studied. It was found that, at the same Re number, the column staggered arrangement can compensate for the limited heat transfer performance of the in-line arrangement and reduce the high pressure drop associated with the row staggered arrangement. Honeycomb arrangement was proposed based on the column staggered arrangement. Then, the effects of Re and tube pitches thermal-hydraulic performance of tube bundles with in-line and honeycomb arrangements were examined. The critical tube pitch or velocity at which the honeycomb tube bundle achieves the same thermal performance as the in-line tube bundle are determined. The results provide valuable insights for the practical application of flue gas heat exchangers with honeycomb arrangement.

中文翻译：

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H型翅片管换热器热工水力性能数值研究与比较

H型翅片管换热器以其耐磨、防污等优点，在锅炉和余热回收装置中得到了广泛的应用。为了提高节能效果，对不同管束排列方式的H型翅片管换热器的流动与传热特性进行了研究。结果发现，在相同的Re值下，列交错排列可以补偿直列排列有限的传热性能，并减少与行交错排列相关的高压降。在柱交错布置的基础上提出了蜂窝布置。然后，研究了Re和管节距对直列式和蜂窝式排列管束热工水力性能的影响。确定了蜂窝管束达到与直列管束相同的热性能时的临界管距或速度。研究结果为蜂窝式烟气换热器的实际应用提供了有价值的见解。