2013 1(12)

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Pages:

251 - 254

Language:

RU

Ref.:

3


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2013_1(12)_45.pdf

 

 

BOILING OF SINGLE COMPONENT REFRIGERANTS AND NON-AZEOTROPIC MIXTURES INSIDE THE HORIZONTAL SMOOTH TUBES

Mezentseva N.N.1, Mukhin V.A.2, Mezentsev I.V.1

1 Institute of Thermophysics SB RAS, Novosibirsk, Russia
2 Siberian Transport University, Novosibirsk, Russia


Citation:

Mezentseva N.N. Boiling of single component refrigerants and non-azeotropic mixtures inside the horizontal smooth tubes / N.N. Mezentseva, V.A. Mukhin, I.V. Mezentsev // Modern Science: Researches, Ideas, Results, Technologies. - Dnepropetrovsk: SPIC "Triacon". - 2013. - Iss. #1(12). - PP. 251 - 254


Keywords:

heat pump; non-azeotropic refrigerants; boiling; heat transfer


Abstracts:

The experimental values of heat transfer coefficients obtained by different authors at investigation of single-component refrigerant and non-azeotropic mixtures boiling inside the horizontal smooth tubes have been analyzed. This analysis allowed us to distinguish two different regimes of heat transfer: nucleate boiling and evaporation at forced convection. The boundary between these two regimes is determined by the values of Thonon criterion (1995). In the area of nucleate boiling the experimental data agree well with Gogonin’s dependence (2006). In the range of evaporation at forced convection we suggested to describe all experimental data by the dependence with application of Lockhart-Martinelli criterion; in this case an error is ±30 %. It was found out that in contrast to pool boiling diffusion resistance is not important for non-azeotropic mixtures boiling in tube.


References:

  1. NIST Thermodynamic and Transport Properties. Standard Reference Database 23, version 8.0. 2007.

  2. Thonon, B., Vidil, R., Marvillet, C. (1995), "Recent research and developments in plate heat exchangers", Enhanced Heat Transfer, Vol. 2 N 1-2, pp.149-155.

  3. Gogonin, I.I. (2006), "The dependence of boiling heat transfer on the properties and geometric parameters of heat-transfer wall", High Temperature, Vol. 44 N 6, pp 913-921.

 

 
     

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