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首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat transfer during condensation of moving steam in a narrow Channel
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Heat transfer during condensation of moving steam in a narrow Channel

机译：狭窄通道中流动的蒸汽凝结时的热传递

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摘要

The paper presents the results of experimental investigation of heat transfer and hydrodynamics during condensation of moving steam in a narrow channel of square cross-section 2 mm × 2 mm. The channel had a serpentine shape, the channel length was 660 mm. An experimental cell simulated conditions of heat transfer in the condenser of loop heat pipes. The steam velocity at the channel inlet ranged from 13 to 52 m/s, the pressure was 1 atm. The temperature of the cooling water varied from 70 to 95 ℃. The annular flow pattern was noted in the whole range of the regime parameters. There was a clear boundary between the condensation zone and the zone occupied by the condensed phase downstream. Temperature has measured along the channel, and the heat-transfer coefficients have been determined. The coefficient values varied from 10,000 to 55,000 W/K m~2 depending on the steam velocity at the channel inlet and the cooling temperature. The efficiency of the condenser - heat exchanger has been investigated.
机译：本文介绍了在横截面为2 mm×2 mm的狭窄通道中移动蒸汽凝结过程中传热和流体动力学的实验研究结果。通道具有蛇形形状，通道长度为660mm。一个实验单元模拟了回路热管冷凝器中的传热条件。通道入口处的蒸汽速度为13至52 m / s，压力为1 atm。冷却水的温度从70到95℃不等。在整个状态参数范围内都注意到了环形流动模式。在冷凝区和下游冷凝相所占据的区域之间存在清晰的边界。沿通道测量了温度，并确定了传热系数。系数值在10,000至55,000 W / K m〜2之间变化，具体取决于通道入口处的蒸汽速度和冷却温度。已经研究了冷凝器-热交换器的效率。

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