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Interfacial liquid–vapor phase change and entropy generation in pool boiling experiment for titanium tetrachloride

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Abstract

Interfacial temperatures and pressures in liquid and vapor phases near liquid–vapor interfaces in pool boiling experiment for titanium tetrachloride have been measured recently. The interfacial vapor temperature is higher than that of liquid phase. Specific entropy generation rate increases with net boiling flux, as does the temperature discontinuity. Although the discontinuities in the temperatures and the chemical potential exist across the interfaces, the Δsiso can be zero when a physical relation should be provided between the properties in each phase. The entropy generation rate depends on conditions existing in that phase and that in each phase near liquid–vapor interfaces.

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Abbreviations

A :

Boiling area

d 1 :

Distance (mm)

h :

Specific enthalpy

Δh r :

Latent heat of vaporization (J mol−1)

k :

Thermal conductivity of pure copper (W m−1 K−1)

n :

Net boiling flux (mol m−2 s−1)

Δn :

Micro-molecules of the titanium tetrachloride

N :

Molecules of the titanium tetrachloride

p :

Pressure

Q :

Heat flux (kW m−2)

s :

Specific entropy

S :

Entropy

Δs iso :

Specific entropy generation rate (kJ mol−1 K−1)

S iso :

Total entropy of the isolated system

S g :

Interfacial entropy generation rate (kJ m−2 s−1 K−1)

T, T 1, T 2 :

Temperature (K)

u :

Intensive internal energy of the surface phase

U l :

Internal energy of the liquid

σ :

Surface tension

μ :

Chemical potential

l:

Liquid phase

v:

Vapor phase

s:

Interface phase

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Acknowledgements

This research was supposed by the National Natural Science Foundation of China (NO. 51574094), the Science and Technology Department of Guizhou Province under grant number 3009 in 2013, 4002 in 2014 and 2004 in 2014. And all co-authors thank the reviewers for the valuable comments and suggestions.

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  1. Fuzhong Wu & Huixin Jin

    Present address: The Key Laboratory of Metallurgy and Energy Conservation of Guizhou, Guizhou University, Huaxi District, Guiyang City, 550025, Guizhou Province, People’s Republic of China

Authors and Affiliations

  1. School of Metallurgy, Northeastern University, Shenyang, People’s Republic of China

    Wenhao Wang & Qingbo Yu

  2. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming, People’s Republic of China

    Fuzhong Wu

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  1. Wenhao Wang
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Correspondence to Fuzhong Wu.

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Wang, W., Wu, F., Yu, Q. et al. Interfacial liquid–vapor phase change and entropy generation in pool boiling experiment for titanium tetrachloride. J Therm Anal Calorim 133, 1571–1578 (2018). https://doi.org/10.1007/s10973-018-7203-1

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  • DOI: https://doi.org/10.1007/s10973-018-7203-1

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