INFLUENCE OF COMPOSITION ON HEAT TRANSFER AND CRITICAL HEAT FLUX IN BOILING OF MULTICOMPONENT MIXTURES
多组分混合物沸腾时成分对传热和临界热通量的影响
基本信息
- 批准号:12650208
- 负责人:
- 金额:$ 2.37万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2000
- 资助国家:日本
- 起止时间:2000 至 2001
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
(1) Development of Simulation Code for Bubble GrowthA numerical simulation code was developed to analyze the bubble growth and coalescence both for a single nucleation site and for two neighboring sites. Simulation results made clear an importance of evaporation from a meniscus film under bubbles.(2) Influence of Mixture Composition in Flow BoilingFlow boiling experiment was performed for binary refrigerant mixtures (R-134a/R-124) in a horizontal tube. Pressure drop was not influenced by mixture composition, while heat transfer was significantly reduced in mixture boiling. Measured data of pressure drop and heat transfer were correlated in empirical correlations.(3) Influence of Mixture Composition on Three Component MixturesHeat transfer coefficient of ternary refrigerant mixtures (R-134a/R-142b/R-123) was measured in nucleate pool boiling. Reduction in heat transfer coefficients was found attributable to a decrease of the effective temperature difference as a result of the depletion of the more volatile component at the liquid-Vapor interface. Thus the boiling range was considered as a dominant parameter and introduced in a correlation for boiling heat transfer coefficient of mixtures.
(1)汽泡生长模拟程序的开发了一个数值模拟程序,分析了单个成核位置和两个相邻成核位置下汽泡的生长和合并。模拟结果表明了气泡作用下弯月形薄膜蒸发的重要性。(2)混合工质组成对流动沸腾的影响本文对R-134 a/R-124二元混合工质在水平管内进行了流动沸腾实验。混合物的组成对压降没有影响,但在混合物沸腾过程中,传热却显著降低。并对压降和传热的实测数据进行了关联。(3)混合物组成对三元混合物的影响研究在池核沸腾条件下,测定了三元混合制冷剂(R-134 a/R-142 b/R-123)的传热系数。传热系数的减少被认为是由于在液体-蒸汽界面处的更易挥发的组分的耗尽而导致的有效温差的减小。因此,沸程被认为是一个主导参数,并引入到一个关联式的沸腾传热系数的混合物。
项目成果
期刊论文数量(21)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Y.FUJITA, M.TSUTSUI: "Nucleate Boiling of Multicomponent Mixtures"Proc. of Int. Workshop on Current Status and Future Directions in Boiling Heat Transfer and Two-Phase Flow. 1. 51-58 (2000)
Y.FUJITA,M.TSUTSUI:“多组分混合物的核沸腾”Proc。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Yasunobu FUJITA et al.: "Nucleate Boiling of Multicomponent Mixtures"Proc.of Int.Workshop on Current Status and Future Directions in Boiling Heat Transfer and Two-Phase Flow. 1. 51-58 (2000)
Yasunobu FUJITA 等人:“多组分混合物的核沸腾”Proc.of Int.Workshop 关于沸腾传热和两相流的现状和未来方向。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Y.FUJITA, M.TSUTSUI: "Heat Transfer in Nucleate Boiling of Binary Refrigerant Mixtures"International Journal of Transport Phenomena. 3-4. 365-377 (2001)
Y.FUJITA,M.TSUTSUI:“二元制冷剂混合物核沸腾中的传热”国际传输现象杂志。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Q. BAI, Y. FUJITA: "Numerical Simulation of Bubble Growth in Nucleate Boiling - Effects of System Parameter"Proc. of UEF Conference on Boiling 2000-Phenomena & Emerging Applications. Vol.1. 116-135 (2000)
Q. BAI,Y. FUJITA:“核沸腾中气泡生长的数值模拟 - 系统参数的影响”Proc。2000 年沸腾现象与新兴应用会议,第 1 卷(2000 年)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Y. FUJITA, M. TSUTSUI: "Experimental Investigation in Pool Boiling Heat Transfer of Ternary Mixture and Heat Transfer Correlation"Proc. of the 5th World Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics. Vol. 1. 260-355 (2001)
Y. FUJITA,M. TSUTSUI:“三元混合物池沸腾传热的实验研究和传热相关性”Proc。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
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FUJITA Yasunobu其他文献
FUJITA Yasunobu的其他文献
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{{ truncateString('FUJITA Yasunobu', 18)}}的其他基金
RESEARCH ON PREDICTION METHODS OF HEAT TRANSFER COEFFICIENT AND CRITICAL HEAT FLUX IN BOILING OF MULTICOMPONENT MIXTURES
多组分混合物沸腾传热系数和临界热通量预测方法研究
- 批准号:
14550187 - 财政年份:2002
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
MARANGONI EFFECT ON BOILING OF MIXTURES
马兰戈尼效应对混合物沸腾的影响
- 批准号:
09650243 - 财政年份:1997
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
THERMAL ENERY UTILIZATION WITH LOW EXERGY LOSS
热能利用,能量损失低
- 批准号:
06246106 - 财政年份:1994
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research on Priority Areas
High Density Array of Tubes in Horizontal Tube-Bundle Evaporator
卧式管束蒸发器中的高密度管阵列
- 批准号:
05555067 - 财政年份:1993
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research (B)
Enhancement of Flow Boiling Heat Transfer in High Quality Region in a Vertical Tube
垂直管内优质区域流动沸腾传热的强化
- 批准号:
03650184 - 财政年份:1991
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Heat Transfer in Post Dryout and Its Augmentation
干燥后的传热及其增强
- 批准号:
01550184 - 财政年份:1989
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Boiling Heat Transfer of Binary Mixture in a Tube
二元混合物在管内的沸腾传热
- 批准号:
62550157 - 财政年份:1987
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Direct Contact Evaporation Process for Recovery of Waste Heat
回收废热的直接接触蒸发工艺
- 批准号:
60850041 - 财政年份:1985
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research
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