Using a wind tunnel, a series of model finned flat tube copper radiators was studied. All geometrical parameters of the studied radiators were fixed except for the height of the fin, which was varied in the range from 5 to 20 mm. It was found that the global water-air heat transfer coefficient weakly depends on the water flow rate and significantly depends on the air flow rate. Correlations between the Nusselt and Reynolds numbers for fins with different heights are found. Based on the obtained correlations, a procedure for scaling the heat exchanger, verified experimentally, is proposed. The experiments performed demonstrate the efficiency and time-saving potential of the proposed method for choosing the optimal finned flat tube heat exchanger for adsorption heat conversion systems.

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翅片扁管换热器的建模和努塞尔-雷诺数相关性的搜索

利用风洞，对一系列模型翅片扁管铜散热器进行了研究。所研究的散热器的所有几何参数都是固定的，除了翅片的高度在 5 到 20 mm 的范围内变化。研究发现，整体水-空气传热系数对水流量的影响较弱，而对空气流量的影响显着。发现了不同高度鳍的努塞尔数和雷诺数之间的相关性。基于所获得的相关性，提出了一种通过实验验证的换热器结垢程序。进行的实验证明了所提出的为吸附热转换系统选择最佳翅片扁管热交换器的方法的效率和节省时间的潜力。