| 液体理论极限过热度的确定 |
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| 引用本文： | 刘朝,明向军,曾丹苓,敖越.液体理论极限过热度的确定[J].工程热物理学报,1997(3). |
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| 作者姓名： | 刘朝 明向军 曾丹苓 敖越 |
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| 作者单位： | 重庆大学热力工程系!重庆，630044，重庆大学热力工程系!重庆，630044，重庆大学热力工程系!重庆，630044，重庆大学热力工程系!重庆，630044 |
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| 摘 要： | 本文利用统计热力学涨落理论提出一个新的假说，并由此建立了确定液体极限过热度的新方法。用导出的公式对18种液体物质极限过热度的计算结果表明，与其他作者提供的实验数据比较，其平均偏差小于0．67％，最大偏差不超过2.65％。本文给出的表达式具有普适性，可以对任何液体物质进行极限过热度预测。因此，这种新的方法在理论和应用上的价值都是显见的。
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| 关 键 词： | 液体过热度 涨落 统计系综 亚稳态 |
DETERMINATION OF THEORETICAL SUPERHEAT LIMIT OF LIQUID |
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| LIU Chao, MING Xiangjun, ZENG Danling, AO Yue.DETERMINATION OF THEORETICAL SUPERHEAT LIMIT OF LIQUID[J].Journal of Engineering Thermophysics,1997(3). |
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| Authors: | LIU Chao MING Xiangjun ZENG Danling AO Yue |
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| Abstract: | A new hypothesis is proposed in the paper to determine the superheat limit of liquid on the basis of fluctuation theory of statistical thermodynamics. By using the derived relation the superheat limits of 18 substances were calculated and compared with the experimental data offered by other authors. The average deviation is less than 0.67% and the maximum deviation is less than 2.65%. The expressions given in the paper are universal. They are applicable for any substances to predict their superheat limit. Therefore, the significance of such a new method in theory as well as for practice is obvious. |
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| Keywords: | liquid superheat fluctuation statistical ensemble metastable state |
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