Authors

Analytical model of condensation in mini dusts

DOI: 10.21047/1606-4313-2016-15-1-66-72
UDC 621.565.9

Analytical model of condensation in mini dusts

Sinitsyna K.M., Zaitsev A.V., Aleksandr V. Baranenko

Abstract
The article deals with the problem of analytical estimation for condensation in mini ducts. Algorithm based on classicalcondensation simulation of two phase flow in bare pipe is designed; the peculiarities of micro and mini duct heat exchangers being taken into account. Method of finite differnces is used. The problem is defiend in general terms, Navier-Stokes equationi.e. partial differential equations system in Cartesian coordinate system being used as a base. Six distributed parameters of flow are used: velocity vector components (u, v, w) in3D coordinate system, pressure (p), temperature (T), refrigerant density (ρ). Main units of estimation software are designed. Ammonia refrigerant condensation is analyzed primarily. The requirement for the applicability of the model and software to any refrigerant is met. Results obtained are going to be compared with data base of experimental results.

Keywords: analytical model, mini duct, condensation, Navier-Stokes equation, flow parameters, refrigerant.

All references

1. Petrovskii Yu. V., Fastovskii V. G. Modern effective heat exchangers. – M.-L.: Energoizdat, 1962. 256 p. (in Russian)

2. Microchannel technology. More efficient, compact and corrosion resistant technology for air cooled chiller application. – Carrier Corp., NY, 2006.

3. Shugurov L.M. Cars. Encyclopedia of equipment. Moscow, ROSMEN-PRESS, 2005. p. 26-40. (in Russian)

4. Baranenko A.V. Results of work of IAR in 20 years. Vestnik mezhdunarodnoi akademii kholoda. 2013. No 2. p. 4-12. (in Russian)

5. Shishov V.V., Klokov M.Yu., Veselkov S.I. Aluminum heat exchangers – microchannel technology. Santekhnika. Otoplenie. Konditsionirovanie. 2007. No 2. p. 34-45. (in Russian)

6. Khovalyg D.M. The ASHRAE conference and the AHR Expo 2012 exhibition in the USA. Kholodil'naya tekhnika. 2012. No 4. p. 46-47. (in Russian)

7. Johnson M., Hrnjak P. Investigation of Microchannel Heat Exchangers. UIUC ACRC technical report, 2009.

8. Awad M.M., Dalkilic A.S., Wongwises S.A. Critical Review on Condensation Heat Transfer in Microchannels and Minichannels. Journal of Nanotechnology in Engineering and Medicine, 2014 (5). С. 4-25.

9. Garimella S. Condensation Flow Mechanisms in Microchannels: Basis for Pressure Drop and Heat Transfer Models. Heat Transfer Engineering, 2004. 25(3). Р.104-116.

10. Garimella S., Agarwal A. Measurement and modeling of condensation heat transfer in non-circular microchannels. International journal of refrigeration, 2010. N. 33. P. 1169-1179.

11. Garcı´a-Cascales J.R., Vera-Garcı´a F., Gonza´lvez-Macia´ J., Corbera´n-Salvador J.M., Johnson M.W., Kohler G.T. Compact heat exchangers modeling: Condensation. International Journal of Refrigeration, 2010. N. 33. P. 135–147.

12. Kondou C., Hrnjak P. Condensation from superheated vapor flow of R744 and R410A at subcritical pressures in a horizontal smooth tube. International Journal of Heat and Mass Transfer, 2012. N. 55. P. 2779-2791.

13. Kandlikar S. G. и др. Heat Transfer in Microchannels – 2012 Status and Research Needs. Journal of Heat Transfer, 2013. Vol. 135 / 091001−1.

14. Talimi V., Muzychka Y.S., Kocabiyik S. A review on numerical studies of slug flow hydrodynamics and heat transfer in microtubes and microchannels. International Journal of Multiphase Flow, 2012. N. 3. P. 88-104.

15. Talimi V., Muzychka Y.S., Kocabiyik S. Slug flow heat transfer insquare microchannels. International Journal of Heat and Mass Transfer, 2013. N. 62. P. 752-760.

16. Awad M.M., Muzychka Y.S. A Robust Asymptotically Based Modeling Approach for Two-Phase Flows. Advances in Mechanical Engineering, 2014. [digital resource] http://dx.doi.org/10.1155/2014/327653.

17. Awad M.M., Muzychka Y.S., Modeling of Interfacial Component for Two-Phase Frictional Pressure Gradient at Microscales. Advances in Mechanical Engineering, 2014. [digital resource] http://dx.doi.org/10.1155/2014/492435.

18. Nebuloni S., Thome J.R. Numerical modeling of laminar annular film condensation for different channel shapes. International Journal of Heat and Mass Transfer, 2010. N. 53 P. 2615-2627.

19. Nebuloni S., Thome J.R. Numerical Modeling of the Conjugate Heat Transfer Problem for Annular Laminar Film Condensation in Microchannels. Journal of Heat Transfer, 2012. Vol. 134 / 051021–1.

20. Wang H.S., Rose J.W. Theory of heat transfer during condensation in microchannels. International Journal of Heat and Mass Transfer, 2011. N. 54. P. 2525-2534.

21. Kuznetsov V.V. Warm and a mass exchange in microsystems at phase transformations and chemical reactions. XIV Minsk international heat and mass transfer forum: abstracts of the reports and communication. 2012. p. 14-17. (in Russian)

22. Abiev R. Sh., Lavretsov I. V. Hydrodynamics of Gas–Liquid Slug Flow in Capillaries: Comparing Theory and Experiment. Theoretical Foundations of Chemical Engineering, 2011. Vol. 45.

23. Samimi A., Zarinabadi S., Reduction of Greenhouse gases emission and effect on environment. Journal of American Science, 2012. No8(8).С. 1011-1015.

24. Loitsyanskii L.G. Mechanics of liquid and gas: The textbook for higher education institutions. − Moscow, Drofa, 2003. 840 p. (in Russian)

25. Labuntsov D.A., Yagov V.V. Mechanics of two-phase systems: Manual for higher education institutions. Moscow: MEI publishing house, 2000. 374 p. (in Russian)

26. Zaitsev A.V., Logvinenko E.V. Calculation of a current of viscous liquid in the channel taking into account change of a phase state. Vestnik S.-Peterb. un-ta. Ser. 1. 2012. Vol. 4. p. 87-91. (in Russian)

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