Applications of Performance Tables on Steady State Analysis of Multipass Parallel Cross Flow Heat Exchanger

Abstract:

In this paper, steady state sensible performance analysis on multi pass parallel cross flow exchanger was considered. The inputs to the heat exchanger were described through meaningful physically significant parameters such as number of transfer units, capacity rate ratio and dimensionless input temperature. The inputs to the heat exchager were varied systematically and a parametric study was conducted to determine the thermal performance at each individual pass of the heat exchanger. Heat exchanger’s thermal performance was described through the discharge temperatures that were expressed in a dimensionless form. The results from the study were presented in the form of performance tables. The performance tables employed meaningful and industry recognized dimensionless input parameters and the heat exchanger‘s performance was described through dimensionless discharge temperatures at every pass of the heat exchanger. The developed performance tables shall serve two critical aspects. First, it will help the heat exchanger designers to readily choose an optimum heat exchanger. An undersized heat exchanger shall not deliver the requirements and likewise an oversized heat exchanger shall add unnecessary weight and cost. This aspect was clearly observed in this study as indefinetly increasing the number of transfer units (or surface area) beyond a threshold value didn’t enhance the heat transfer. By employing the performance tables as a guide, the heat exchanger designers can quickly ascertain the performance of the heat exchanger without having to perform simulations and/or lengthy calculations. Second, during operational phase of the heat exchanger, the performance tables can be used to understand the performance variation of the heat exchanger with respect to mass flow rates and/or can help the engineers to choose appropriate mass flow rates for the required heat transfer. The highest heat exchanger performance was observed at the lowest capacity rate ratio and likewise the lowest heat exchanger performance was observed at the highest capacity rate ratio. In-addition, during the operational phase, the performance tables can help to detect an underperforming heat exchanger and can help the engineers to schedule maintenance activity on the heat exchanger equipment.

• Periodical: International Journal of Engineering Research in Africa (Volume 28)
• Pages: 53-72
• DOI: https://doi.org/10.4028/www.scientific.net/JERA.28.53
• Online since: January 2017
• Authors: Karthik Silaipillayarputhur*, Ali Al-Saif, Musab Al-Otaibi
• Keywords: Multi Pass Parallel Cross Flow Heat Exchanger, Performance Tables, Sensible Performance of Heat Exchanger

References

[1] Silaipillayarputhur, K. and Idem, S., 2013, A general Matrix Approach to model steady state performance of cross flow heat exchangers, Heat Transfer Engineering, Volume 34, Issue 4, page 338-348.

DOI: 10.1080/01457632.2013.716347

[2] Silaipillayarputhur, K. and Idem. S., 2013 Practical Validation of a Matrix Approach Steady State Heat Exchanger Performance Model, Journal of Applied Global Research, ISSN: 1940-1841, Volume 6, Issue 17, page 1-22.

[3] Pignotti, A. and Shah, R. K. 1992. Effectiveness-number of transfer units relationships for heat exchanger complex flow arrangements, Int. J. Heat Mass Transfer, Vol. 35, No. 5, pp.1275-1291.

DOI: 10.1016/0017-9310(92)90184-t

[4] Domingos, J. D. 1969. Analysis of Complex Assemblies of Heat Exchangers, Int. J. Heat Mass Transfer, Vol. 12, pp.537-548.

DOI: 10.1016/0017-9310(69)90037-4

[5] Shah, R. K. and Pignotti, A. 1993. Thermal Analysis of Complex Crossflow Exchangers in Terms of Standard Configurations, J. Heat Transfer, Vol. 115, pp.353-359.

DOI: 10.1115/1.2910686

[6] Chen, J. D. and Hsieh, S. S. 1990. General procedure for effectiveness of complex assemblies of heat exchangers, Int. J. Heat Mass Transfer, Vol. 33, No. 8, pp.1667-1674.

DOI: 10.1016/0017-9310(90)90022-m

[7] Baclic, B. S. 1978. A Simplified Formula for Crossflow Heat Exchanger Effectiveness, Trans. ASME, Vol. 100, pp.746-747.

DOI: 10.1115/1.3450895

[8] Bhuiyan, A. A, Islam, A.K.M.S., 2016. Thermal and hydraulic performance of finned-tube heat exchangers under different flow ranges: A review on modeling and experiment (Review), International Journal of Heat and Mass Transfer, Vol 101, pp.38-59.

DOI: 10.1016/j.ijheatmasstransfer.2016.05.022

[9] Bhuiyan, A. A., Ruhul Amin, M., Naser, J., Sadrul Islam, A.K.M., 2015. Effects of geometric parameters for wavy finned-tube heat exchanger in turbulent flow: A CFD modeling (Article), Frontiers in Heat and Mass Transfer, Volume 6, Issue 1, pp.1-11.

DOI: 10.5098/hmt.6.5

[10] Bhuiyan, A. A., Amin, M. R., Karim, R., Sadrul Islam, A.K.M., 2014. Plate fin and tube heat exchanger modeling: Effects of performance parameters for turbulent flow regime, International Journal of Automotive and Mechanical Engineering, Volume 9, Issue 1, pp.1768-1781.

DOI: 10.15282/ijame.9.2013.25.0147

[11] Bhuiyan, A.A., Amin, M.R., Karim, R., Sadrul Islam, A.K.M., 2013. Three-dimensional performance analysis of plain fin tube heat exchangers in transitional regime, Applied Thermal Engineering, Volume 50, Issue 1, Pages 445-454.

DOI: 10.1016/j.applthermaleng.2012.07.034

[12] Kiatpachai, P., Pikulkajorn, S., Wongwises, S., 2015. Air-side performance of serrated welded spiral fin-and-tube heat exchangers, International Journal of Heat and Mass Transfer, Volume 89, Article number 11990, pp.724-732.

DOI: 10.1016/j.ijheatmasstransfer.2015.04.095

[13] Purandare, P.S., Lele, M.M., Gupta, R.K., 2015. Investigation on thermal analysis of conical coil heat exchanger, International Journal of Heat and Mass Transfer, Volume 90, pp.1188-1196.

DOI: 10.1016/j.ijheatmasstransfer.2015.07.044

[14] Mroue, H., Ramos, J.B., Wrobel, L.C., Jouhara, H., 2015. Experimental and numerical investigation of an air-to-water heat pipe-based heat exchanger, Applied Thermal Engineering, Volume 78, pp.339-350.

DOI: 10.1016/j.applthermaleng.2015.01.005

[15] Sinha, A., Chattopadhyay, H., Iyengar, A.K., Biswas, G., 2016. Enhancement of heat transfer in a fin-tube heat exchanger using rectangular winglet type vortex generators, International Journal of Heat and Mass Transfer, Volume 101, pp.667-681.

DOI: 10.1016/j.ijheatmasstransfer.2016.05.032

[16] Liu, X., Yu, J., Yan, G., 2016. A numerical study on the air-side heat transfer of perforated finned-tube heat exchangers with large fin pitches, International Journal of Heat and Mass Transfer, Volume 100, pp.199-207.

DOI: 10.1016/j.ijheatmasstransfer.2016.04.081

[17] Silaipillayarputhur, K. and Idem, S., 2012. Step Response of a Single-Pass Crossflow Heat Exchanger with Variable Inlet Temperatures and Mass Flow Rates, Journal of Thermal Science and Engineering Applications, Vol. 4, Issue 4, 044501.

DOI: 10.1115/1.4007206

[18] Silaipillayarputhur, K. and Idem, S., 2014. Transient Performance Model for a Multipass Cross-Flow heat exchanger, Heat Transfer Engineering, Vol. 35, Issue 1, pp.15-24.

DOI: 10.1080/01457632.2013.810082

[19] Silaipillayarputhur, S. and Idem, S., 2014. Transient Performance of Multi-Pass Parallel and Counterflow Crossflow Heat Exchangers, IMECE2014-37030, Proceedings of IMECE, Montreal, Quebec.

DOI: 10.1115/imece2014-37030

[20] Silaipillayarputhur, K., and Idem. S., 2015. Transient Response of a Cross Flow Heat Exchanger with Neither Parallel nor Counter Flow Circuiting Subjected to Flow and Temperature Perturbations, IMECE2015-52562, pp. V08AT10A019; 10 pages; November 13-19, Proceedings of ASME IMECE, Houston, USA.

DOI: 10.1115/imece2015-52562

[21] Silaipillayarputhur, K., 2015, Prediction of Thermal Performance of Multi Pass Cross Flow Heat Exchangers", ICITAME, 2015, ISBN 978-93-84422-20-2, May 22-23, Proceedings of International Institute of Engineers, Dubai, UAE , pp.36-42.

DOI: 10.15242/iie.e0515010

[22] Silaipillayarputhur, K., Muralidharan, S., Badrinath. G., 2015, Prediction of Thermal Performance of Cross Flow Heat Exchangers, Lambert Academic Publishing, Germany, ISBN-13: 978-3-659-78268-8, ISBN-10: 3659785688, EAN: 9783659782688.

[23] Kays, W. M., and London A. L. 1984. Compact Heat Exchangers, 3rd Ed., McGraw-Hill, New York.

[24] Incropera, F. P., Dewitt, D. P., Bergman, T. L., and Lavine, A. S. 2006. Fundamentals of Heat and Mass Transfer, 4th Edition, John Wiley & Sons, Inc., New York.