THERMAL SCIENCE
International Scientific Journal
GLASS PACKING MATERIALS USED FOR INTENSIFICATION OF HEAT TRANSFER AT BOILING ON TUBULAR SURFACES
ABSTRACT
The paper presents the results obtained in determining the partial heat transfer coefficient at boiling on vertical and horizontal tubular surfaces surrounded by different types of glass packing material. In both cases, an intensification of heat transfer can be noticed as compared to the boiling on the same installation performed without glass packing materials. During the experiments pseudo-critical values of thermal flux appear on the vertical and horizontal heating tube with glass packing materials, and the boiling heat transfer coefficient, α, has lower critical values than that on nucleate ordinary boiling. This denotes a differential heating mechanism, determined by the presence of the glass package around the heating tube. The heat transfer intensification is greater with the horizontal tube than with the vertical one.
KEYWORDS
PAPER SUBMITTED: 2015-07-28
PAPER REVISED: 2015-12-03
PAPER ACCEPTED: 2015-12-08
PUBLISHED ONLINE: 2015-12-19
THERMAL SCIENCE YEAR
2017, VOLUME
21, ISSUE
Issue 5, PAGES [2031 - 2037]
- Ozdemir, M., Durmaz, U., An approach to obtain the heat transfer coefficient of aqueous sucrose solutions in agitated boiling vessels, Thermal Science, 19 (2015), pp.33-44
- Gong, S., Cheng, P., Lattice Boltzmann simulations for surface wettability effects in saturated pool boiling heat transfer, International Journal of Heat and Mass Transfer, 85 (2015) pp. 635-646
- Zheng, X., Park, C.W., Experimental study of the sintered multi-walled carbon nanotube/copper microstructures for boiling heat transfer, Applied Thermal Engineering, 86 (2015) pp. 14-26
- Sathyabhama, A., Hegde, R.N., Prediction of Nucleate Pool Boiling Heat Transfer Coefficient, Thermal Science, 14 (2010) pp. 353-364
- Chung, Y.J., et all., Boiling heat transfer and dryout in helically coiled tubes under different pressure conditions, Annals of Nuclear Energy, 71 (2014) pp. 298-303
- Kohn, D., et all., Using vibrations and oscillations for intensification of heat transfer at boiling, Chemical Bulletin of Politehnica University Timisoara, ser.Chemie, 34 (1989) pp. 35-41
- Floarea, O.; Jinescu, G., Procedee intensive în operaţiile unitare de transfer (Intensive processes in transfer unit operations), Editura Tehnica, Bucureşti, Romania, 1975
- Hahne, E., et all., Pool boiling heat transfer on finned tubes—an experimental and theoretical study, International Journal of Heat Mass Transfer 34 (1991) pp. 2071-2079
- Ogata, H., et all., Boiling heat transfer to liquid helium from surface with pin-fins, Cryogenics, 31 (1991) pp. 392-393
- Dix, D., Orozco, J., An Experimental Study in Nucleate Boiling Heat Transfer From a Sphere, Journal of Heat Transfer, 112 (1990) pp. 258-263
- Floarea, O.; Jinescu, G., Procedee intensive în operaţiile unitare de transfer, Ed. Tehn. , Bucureşti, Romania 1975
- Soare, G., Mecanismul şi intensificarea transferului de căldură la fierbere (Mechanism and heat transfer at boiling), Polytechnic Institute Bucureşti, Romania 1987
- Tung, V., Dhir, V., Experimental Study of Boiling Heat Transfer From a Sphere Embedded in a Liquid-Saturated Porous Medium, Journal of Heat Transfer, 112 (1990) pp. 736-743
- Jamialahmadi, M.; Mullersteinhagen, N., Liquid additives in heat transfer at boiling, Chemical Engineering Research and Design, 69 (1991) pp. 221-227
- Kawahira, H., et all., The effect of an electric field on boiling heat transfer of refrigerant-11-boiling on a single tube, IEEE Transactions on Industry Applications, 26 (1990) pp. 359-365
- Chen, G.M., et all., An experimental investigation and modelling of flow boiling heat transfer of isobutane-compressor oil solution in a horizontal smooth tube, International Journal of Refrigeration, In Press, DOI: 10.1016/j.ijrefrig.2015.06.012, 2015
- Thiagarajan, S.J., et all., Bubble dynamics and nucleate pool boiling heat transfer on microporous copper surfaces, International Journal of Heat and Mass Transfer, 89 (2015) pp. 1297-1315
- Demir, E., et all., Effect of silicon nanorod length on horizontal nanostructured plates in pool boiling heat transfer with water, International Journal of Thermal Sciences, 82 (2014) pp. 111-121
- Kim, D.E., et all., Review of boiling heat transfer enhancement on micro/nanostructured surfaces, Experimental Thermal and Fluid Science, 66 (2015) pp. 173-196
- Fan, L.W, et all., The effect of concentration on transient pool boiling heat transfer of graphene-based aqueous nanofluids, International Journal of Thermal Sciences, 91 (2015) pp. 83-95
- Hegde, R.N., Rao, S.S., Reddy, R., Flow visualization and study of critical heat flux enhancement in pool boiling with al2o3-water nanofluids, Thermal Science, 16 (2012) pp. 445-453
- Balakrishnan, R., Dhasan, M.L., Rajagopal, S., Flow boiling heat transfer coefficient of R-134a/R-290/R-600a mixture in a smooth horizontal tube, Thermal Science, 12 (2008) pp. 33-44
- S. Popa, Efficiency of separation through mass transfer. Efficiency of bubbling columns on chemical processes, PhD Thesis, University Lucian Blaga, Sibiu, Romania 1999