| 均匀加热竖直管内强迫对流临界热流密度的实验研究 |
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| 引用本文： | 庞凤阁. 均匀加热竖直管内强迫对流临界热流密度的实验研究[J]. 核科学与工程, 1998, 0(1) |
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| 作者姓名： | 庞凤阁 |
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| 作者单位： | 哈尔滨工程大学 |
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| 摘 要： | 利用氟里昂－１２作为工作流体，对于均匀加热竖直管内强迫对流的临界热流密度（ＣＨＦ）进行了实验研究。在比较广泛的参数范围内对质量流速Ｇ，压力Ｐ和热平衡干度Ｘ对ＣＨＦ的影响进行了探讨。结果表明，干度和质量流速对ＣＨＦ的影响规律与其他作者获得的结果相类似。但压力对ＣＨＦ的影响规律比较复杂。压力的影响与质量流速、干度密切相关。即在不同的质量流速和不同的干度下，压力影响规律不同。当质量流速较高时，在低干度区ＣＨＦ随压力的升高而降低，干度较高时，ＣＨＦ随压力升高而增大。
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| 关 键 词： | 临界热流密度 强迫对流 压力影响 |
EXPERIMENTAL STUDY ON CRITICAL HEAT FLUX OF FORCED CONVECTION BOILING IN UNIFORMLY HEATED VERTICAL TUBE |
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| PANG FENGGE. EXPERIMENTAL STUDY ON CRITICAL HEAT FLUX OF FORCED CONVECTION BOILING IN UNIFORMLY HEATED VERTICAL TUBE[J]. Chinese Journal of Nuclear Science and Engineering, 1998, 0(1) |
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| Authors: | PANG FENGGE |
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| Affiliation: | Harbin Engineering University |
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| Abstract: | An experimental study on critical heat flux of forced convection boiling in uniformly heated vertical tube was carried out, using Freon 12 as the working fluid with critical heat flux q c measured in a 16mm diameter circular tube. The effect of steam quality and mass velocity on CHF has been investigated. The results obtained were found to be essentially consistent with the CHF data measured by other authors. However, the influence of pressure on CHF was complex and coupled with mass velocity and steam quality. In the lower steam quality region, CHF decreased with increasing pressure,while in the higher steam quality region, CHF increased with increasing pressure. |
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| Keywords: | critical heat flux forced convection effect of pressure |
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