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DOI: 10.1615/HeatTransRes.v40.i6.40
pages 555-570

The Overall Heat Transfer Characteristics of a Double-Pipe Heat Exchanger

Amir Reza Ansari Dezfoli
Department of Mechanical Engineering, Shahid Bahonar University of Kerman, P. O. Box 76175-133, Kerman, Iran
Mozaffar Ali Mehrabian
Department of Mechanical Engineering, Shahid Bahonar University of Kerman, P. O. Box 76175-133, Kerman, Iran

ABSTRACT

Heat exchangers are used in industrial processes to recover heat between two process fluids. The purpose of this paper is to develop analytical solutions using mathematical techniques to work out the two-dimensional (2D) temperature changes of flow in the passages of a double-pipe heat exchanger in parallel flow arrangement. Although the necessary equations for heat transfer in a double-pipe heat exchanger are available, using these equations the optimization of the system cost is laborious. Also, the solution of the problem yields the heat-transfer coefficient in inner and outer flows of double-pipe heat exchangers. The results are then compared with the experimental data available in other literature.


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