Experimental Investigation of Two-Phase Flow Boiling Heat Transfer and Pressure Drop of Ammonia in Multiport Minichannel

机译：多阶段氨水沸腾热传递和压力下降的实验研究

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In this work, we demonstrate the two-phase flow boiling heat transfer coefficient and pressure dropof ammonia (R717) inside a horizontal aluminum multiport tube. The tube has 9 parallel channelswith a hydraulic diameter of 0.96 mm each and the evaporation length is 200 mm. Theexperimental data were performed at saturation temperatures of 6 °C, the heat flux of 3 and6 kW/m2, the mass flux varied from 50 to 150 kg/m2s and the quality up to a unit. The results showthat the heat transfer coefficients and pressure drop are strongly influenced by the mass flux butare slightly affected by the heat flux. To validate the data, the heat transfer coefficient data werealso compared with various correlations in the literature.

机译：在这项工作中，我们展示了两相流沸腾的传热系数和压降水平铝制多端口管内的氨（R717）。管有9个平行通道液压直径为0.96mm，蒸发长度为200毫米。这实验数据在6°C的饱和温度下进行，热量为3和3 6 kW / m2，质量磁通量从50到150 kg / m2s变化，质量达到单位。结果表明传热系数和压降受到质量磁通量的强烈影响，但是受热量通量略微影响。为了验证数据，传热系数数据是还与文献中的各种相关性相比。

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《IIR Conference on Sustainability and the Cold Chain;Institut International Du Froid;International Institute of Refrigeration》||84-88|共5页
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Nguyen Ba CHIEN; Pham Quang VU; Jong-Taek OH;
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Experimental Investigation of Two-Phase Flow Boiling Heat Transfer and Pressure Drop of Ammonia in Multiport Minichannel

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