Study on critical heat flux density at the quasi-stationary heating of superficially boiling binary mixtures
https://doi.org/10.12737/10374
Abstract
The heat-flow rate and temperature of the heater are measured at various liquid subcooling boiling points. An experimental plant and the obtained results on the heat energy motion in the superficially boiling binary liquid mixtures are described. The experiments have used a quasi-stationary heating method which allows accurate specifying of the critical heat flux ( qkr ) and the temperature of the heater ( Th ). An experimental study of the superficial boiling has determined that the critical heat flux density depends significantly on the liquid subcooling. At the liquid nucleus temperature TL =300С in the mixture of water- n -butanol, 10% critical heat flux reaches a considerable size of 20.68 MW/m2, and at TL =300С - much less qkr =2.98 MW/m2. This is due to the increase in the temperature drop (∆ Т = Th kr + TL ) at the moment of qkr .
About the Authors
Victor Vladimirovich Kozhokaru
Don State Technical University, Rostov-on-Don, Russian Federation
Russian Federation
Russian Federation
Evgeny Vasilyevich Lykov
Don State Technical University, Rostov-on-Don, Russian Federation
Russian Federation
Russian Federation
References
1. Burov, V.D., Dorokhov, E.V., Yelizarov, D.P. Teplovye elektricheskie stantsii. [Thermal stations.] Moscow: Izdatel'skiy dom MEI, 2009, 466 p. (in Russian).
2. Nukiyama, S. The maximum and minimum values of the heat Q transmitted from metal to boiling water under atmosphere pressure. Iht. J. Heat Mass Transfer, 1984, vol. 27, pp. 959–970.
3. Bonilla, C. Voprosy teploperedachi v yadernoy fizike. [Issues of heat transfer in nuclear physics.] Moscow: Gosatomizdat, 1961, 314 p. (in Russian).
4. Lykov, E. V. Thermoacoustic effects in surface boiling liquids. Int. J. Heat Mass Transfer, 1972, vol. 15, pp. 1603–1614.
5. Novikov, I.I. Perekhodnye rezhimy teploobmena pri kipenii zhidkosti. [Transient modes of heat transfer under fluid boiling.] Teplofizika vysokikh temperatur, 1996, vol. 34, no. 1, pp. 162–164 (in Russian).
6. Van Stralen, S. J. D. The mechanism of nucleate boiling in pure liquids and in binary mixtures-part I. Iht. J. Heat Mass Transfer, 1966, vol. 9, pp. 995–1020.
7. Van Stralen, S. J. D. The mechanism of nucleate boiling in pure liquids and in binary mixtures-part IV Surface boiling. Iht. J. Heat Mass Transfer, 1967, vol. 10, pp. 1485–1498.
8. Kruzhilin, G.N., et al., Nazmeyev, Y.G., ed. Teplofizika v teplovoy i yadernoy energetike. [Thermophysics in thermal-and nuclear-power engineering.] Kazan': Kazan. fil. Mosk. energ. in-ta, 1998, 338 p. (in Russian).
9. Grigoryev, L.N., Usmanov, A.G. Teplootdacha pri kipenii binarnykh smesey. [Heat transfer under binary mixtures boiling.] Technical Physics, 1958, vol. 28, no. 2, pp. 325–332 (in Russian).
10. Alexandrov, А.А., Grigoryev, B.A. Tablitsy teplofizicheskikh svoystv vody i vodyanogo para. [Tables of thermophysical properties of water and steam.] Moscow: Izdatel'stvo MEI, 1999, 168 p. (in Russian).
11. Collier, J., Hewitt, G. Vvedenie v yadernuyu energetiku. [Introduction to Nuclear Power.] Moscow: Energoatomizdat, 1989, 253 p. (in Russian).
Review
For citations:
Kozhokaru V.V., Lykov E.V. Study on critical heat flux density at the quasi-stationary heating of superficially boiling binary mixtures. Vestnik of Don State Technical University. 2015;15(1):48-53. (In Russ.) https://doi.org/10.12737/10374
Views:
439
Email this article 