MICROSCALE HEAT TRANSFER MEASUREMENTS DURING SUBCOOLED POOL BOILING OF PENTANE: EFFECT OF FLUID PROPERTIES AND BUBBLE DYNAMICS
MICROSCALE HEAT TRANSFER MEASUREMENTS DURING SUBCOOLED POOL BOILING OF PENTANE: EFFECT OF FLUID PROPERTIES AND BUBBLE DYNAMICS
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戊烷过冷池沸腾过程中的微观传热测量：流体特性和气泡动力学的影响
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发表时间：
2009
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通讯作者：
Payam Delgoshaei
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作者：
Payam Delgoshaei
利用微尺度加热阵列，对地球重力环境下戊烷的空间和时间分辨过冷池沸腾进行了测量。阵列中单个加热器元件的数据与两台高速摄像机的底部和侧面图像同步。气泡的生长主要是由于过热液体层的能量传递。瞬态传导和/或微对流是主要的传热机制。建立了由微层蒸发和瞬态导电组成的复合模型，并与实验数据进行了比较。ASME版权所有©2009
Measurements of space and time resolved subcooled pool boiling of pentane in earth gravity environments were made using a microscale heater array. Data from individual heater elements in the array were synchronized with bottom and side view images from two highspeed cameras. The bubble growth was primarily due to energy transfer from the superheated liquid layer. Transient conduction and/or microconvection was found to be the dominant heat transfer mechanism. A composite model consisting of microlayer evaporation and transient conduction was developed and compared with the experimental data.Copyright © 2009 by ASME