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首页> 外文期刊>JSME International Journal. Series B, Fluids and Thermal Engineering >Heat Transfer Characteristics and Performance of a Spirally Coiled Heat Exchanger under Sensible Cooling Conditions
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Heat Transfer Characteristics and Performance of a Spirally Coiled Heat Exchanger under Sensible Cooling Conditions

机译：明显冷却条件下螺旋螺旋换热器的传热特性及性能

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摘要

In the present study, new experimental data on the heat transfer characteristics and the performance of a spirally coiled heat exchanger under sensible cooling conditions is presented. The spiral-coil heat exchanger consists of a steel shell and a spirally coiled tube unit. The spiral-coil unit consists of six layers of concentric spirally coiled tubes. Each tube is fabricated by bending a 9.27 mm diameter straight copper tube into a spiral-coil of five turns. The innermost and outermost diameters of each spiral-coil are 67.7 and 227.6 mm, respectively. Air and water are used as working fluids in shell side and tube side, respectively. A mathematical model based on the conservation of energy is developed to determine the heat transfer characteristics. There is a reasonable agreement between the results obtained from the experiment and those obtained from the model and a good agreement for the high air mass flow rate region. The results obtained from the parametric study are also discussed.
机译：在本研究中，提出了关于在明显冷却条件下螺旋盘旋热交换器的传热特性和性能的新实验数据。螺旋盘管热交换器由钢壳和螺旋盘管单元组成。螺旋线圈单元由六层同心螺旋盘管组成。通过将直径9.27毫米的直铜管弯曲成五匝的螺旋线圈来制造每个管。每个螺旋线圈的最内和最外直径分别为67.7和227.6毫米。空气和水分别在壳侧和管侧用作工作流体。建立了基于能量守恒的数学模型来确定传热特性。从实验获得的结果与从模型获得的结果之间存在合理的一致性，并且对于高空气质量流量区域具有良好的一致性。还讨论了从参数研究获得的结果。

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