Effect of Surface Roughness on Thermal-Hydraulic Characteristics of Plate Heat Exchanger

Abstract:

In the paper the experimental analysis of passive heat transfer intensification in the case of modeled plate heat exchanger is conducted. The plate heat exchanger is chosen for the analysis because this kind of heat exchangers could be prospectively applied in the ORC systems, however other areas or application are equally possible. The experimental set-up was assembled at the Department of Energy and Industrial Apparatus of Gdansk University of Technology. The passive intensification was obtained by a modification of the heat transfer surface. The roughness of surface was increased by use of glass shot.During the experiment single-phase convective heat transfer in the single phase system was studied. The experiment was done in two stages. In the first stage the model of commercial plate heat exchanger was investigated, while in the second stage the identical one but with modified heat transfer surface. Model of heat exchanger consisted of three plates. The direct comparison of thermal and flow characteristics between both devices was possible due to assurance of equivalent conditions at the inlet to the system.The thermal and hydraulic characteristics are presented. The thermal analysis shows that in some range of heat flux density the overall heat transfer coefficient was higher for the commercial heat exchanger, while for the other was higher for the heat exchanger with modified surface. The influence of larger roughness on heat transfer cannot unequivocally be evaluated. Therefore as the next step the systematic investigations of model heat exchangers (only with one hot and one cold passage) will be conducted.

• Periodical: Key Engineering Materials (Volume 597)
• Pages: 63-74
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.597.63
• Online since: December 2013
• Authors: Jan Wajs*, Dariusz Mikielewicz
• Keywords: Heat Transfer Enhancement, Passive Techniques for Intensification, Plate Heat Exchangers

References

[1] Gupta, M. Uniyal, Review of heat transfer augmentation through different passive intensifier methods, IOSR J. Mech. Civ. Eng. 1 (2012) 14-21.

DOI: 10.9790/1684-0141421

[2] R.L. Webb, Principles of enhanced heat transfer, Wiley-Interscience, New York, (1994).

[3] K.M. Stone, Review of literature on heat transfer enhancement in compact heat exchangers, Air Conditioning and Refrigeration Center Technical Reports (1996).

[4] T.S. Khan, M.S. Khan, Ming-C. Chyu, Z.H. Ayub, Experimental investigation of single phase convective heat transfer coefficient in a corrugated plate heat exchanger for multiple plate configurations, Appl. Therm. Eng. 30 (2010) 1058–1065.

DOI: 10.1016/j.applthermaleng.2010.01.021

[5] O. Arseneyeva, L. Tovazhnyansky, P. Kapustenko, G. Khavin, The generalized correlation for friction factor in crisscross flow channels of plate heat exchangers, Chem. Eng. Trans. 25 (2011) 399-404.

[6] D. Dovic, B. Palm, S. Svaic, Generalized correlations for predicting heat transfer and pressure drop in plate heat exchanger channels of arbitrary geometry, Int. J. Heat Mass Tran. 52 (2009) 4553–4563.

DOI: 10.1016/j.ijheatmasstransfer.2009.03.074

[7] J. Stasiek, M.W. Collins, M. Ciofalo, P.E. Chew, Investigation of flow and heat transfer in corrugated passages - Part I: Experimental Results, Int. J. Heat Mass Trans. 39 (1996) 149–164.

DOI: 10.1016/s0017-9310(96)85013-7

[8] R.Y. Miura, F.C.C. Galeazzo, C.C. Tadini, J.A.W. Gut, The effect of flow arrangement on the pressure drop of plate heat exchangers, Chem. Eng. Sci. 63 (2008) 5386-5393.

DOI: 10.1016/j.ces.2008.07.029

[9] P.R. Bobbili, B. Sunden, S.K. Das, An experimental investigation of the port flow maldistribution in small and large plate package heat exchangers, App. Therm. Eng. 26 (2006) 1919–(1926).

DOI: 10.1016/j.applthermaleng.2006.01.015

[10] A.G. Kanaris, A.A. Mouza, S.V. Paras, Optimal design of a plate heat exchanger with undulated surfaces, Int. J. Therm. Sci. 48 (2009) 1184–1195.

DOI: 10.1016/j.ijthermalsci.2008.11.001

[11] J.Y. Jeong, H.K. Hong, S.K. Kim, Y.T. Kang, Impact of plate design on the performance of welded type plate heat exchangers for sorption cycles, Int. J. Refrig. 32 (2009) 705-7011.

DOI: 10.1016/j.ijrefrig.2009.01.028

[12] D. Dovic, S. Svaic, Experimental and numerical study of the flow and heat transfer in plate heat exchanger channels, International Refrigeration and Air Conditioning Conference, Paper 672 (2004).

[13] L. Wang, B. Sunden, Optimal design of plate heat exchangers with and without pressure drop specifications, Appl. Therm. Eng. 23 (2003) 295–311.

DOI: 10.1016/s1359-4311(02)00195-3

[14] E.E. Wilson, A basis for rational design of heat transfer apparatus, Trans. ASME 37 (1915).

[15] R.K. Shah, Assessment of modified Wilson plot techniques for obtaining heat exchanger design data, Proceedings of the 9th International Heat Transfer Conference, Jerusalem, Vol 5 (1990) 51-56.

DOI: 10.1615/ihtc9.1050

[16] Refprop v. 9. 0, National Institute of Standards (NIST) (2010).

[17] R.K. Shah, D.P. Sekulic, Fundamentals of heat exchange design, John Wiley and Sons Inc., New York, (2003).

[18] J.E. Hesselgreaves, Compact heat exchangers, Selection, design and operation, Elsevier Science & Technology Books, (2001).