Dynamics of Heat Exchanger Tube Banks

1977 ◽  
Vol 99 (3) ◽  
pp. 462-467 ◽  
Author(s):  
S. S. Chen
Keyword(s):  
Heat Exchanger ◽  
Heat Exchangers ◽  
High Performance ◽  
Forced Vibrations ◽  
Heat Exchanger Tube ◽  
Flow Induced Vibration ◽  
Free And Forced Vibrations ◽  
Tube Banks ◽  
Fluid Interaction ◽  
Exchanger Tube

Flow-induced vibration in heat exchanger tube banks is of great concern, particularly in high performance heat exchangers used in nuclear raactor systems. In this paper, the dynamic characteristics of tube banks in stationary liquid are studied. A method of analysis is presented for free and forced vibrations of tube banks including tube/fluid interaction. Numerical results are given for tube banks subjected to various types of excitations.

A Comparative Overview of Marine Risers and Heat Exchanger Tube Banks

1991 ◽  
Vol 113 (1) ◽  
pp. 30-36
Author(s):  
M. M. Zdravkovich
Keyword(s):  
Heat Exchanger ◽  
Heat Exchangers ◽  
Design Guidelines ◽  
Heat Exchanger Tube ◽  
Marine Risers ◽  
Tube Arrays ◽  
Flow Induced Vibrations ◽  
Satellite Clusters ◽  
Tube Banks ◽  
Exchanger Tube

This is neither an original paper nor a review, but a comparative overview of two seemingly unrelated engineering fields. There are some similarities and strong dissimilarities between multipipe risers and tube arrays employed in heat exchangers. For example, square arrays are used in both, whereas “satellite” clusters cannot be found in heat exchangers. The extensive research on flow-induced vibrations in heat exchanger arrays reveals several mechanisms of excitation and sustenance of tube vibration. Some of the mechanisms identified for tube arrays may be relevant for marine risers. The main object of this comparative overview is to compile and discuss heat exchanger data which may be applicable to marine risers. Design guidelines are specified for satellite clusters.

scholarly journals On the erosion of heat exchanger tube banks in fluidized-bed combustors

1991 ◽  
Vol 68 (1) ◽  
pp. 37-51 ◽  
Author(s):  
Jacques X. Bouillard ◽  
Robert W. Lyczkowski
Keyword(s):  
Heat Exchanger ◽  
Fluidized Bed ◽  
Heat Exchanger Tube ◽  
Tube Banks ◽  
Exchanger Tube

scholarly journals Horizontal earth-air heat exchanger for preheating external air in the mechanical ventilation system

2018 ◽  
Vol 13 (1) ◽  
pp. 71-76
Author(s):  
Vasyl Zhelykh ◽  
Olena Savchenko ◽  
Vadym Matusevych
Keyword(s):  
Heat Transfer ◽  
Mechanical Ventilation ◽  
Heat Exchanger ◽  
Heat Exchange ◽  
Heat Exchangers ◽  
Convective Heat Transfer Coefficient ◽  
Ventilation System ◽  
Heat Pipes ◽  
Heat Exchanger Tube ◽  
Exchanger Tube

Abstract To save traditional energy sources in mechanical ventilation systems, it is advisable to use low-energy ground energy for preheating or cooling the outside air. Heat exchange between ground and outside air occurs in ground heat exchangers. Many factors influence the process of heat transfer between air in the heat exchanger and the ground, in particular geological and climatic parameters of the construction site, parameters of the ventilation air in the projected house, physical and geometric parameters of the heat exchanger tube. Part of the parameters when designing a ventilation system with earth-air heat exchangers couldn’t be changed. The one of the factors, the change which directly affects the process of heat transfer between ground and air, is convective heat transfer coefficient from the internal surface of the heat exchanger tube. In this article the designs of a horizontal earthair heat exchanger with heat pipes was proposed. The use of heat pipes in designs of a horizontal heat exchanger allows intensification of the process of heat exchange by turbulence of air flow inside the heat exchanger. Besides this, additionally heat transfer from the ground to the air is carried out at the expense of heat transfer in the heat pipe itself.

Prediction of Acoustic Vibration in Steam Generator and Heat Exchanger Tube Banks

1996 ◽  
Vol 118 (2) ◽  
pp. 221-236 ◽  
Author(s):  
F. L. Eisinger ◽  
J. T. Francis ◽  
R. E. Sullivan
Keyword(s):  
Heat Exchanger ◽  
Steam Generator ◽  
Acoustic Vibration ◽  
Heat Exchanger Tube ◽  
Acoustic Parameters ◽  
Transverse Acoustic ◽  
Theoretical Predictions ◽  
Tube Banks ◽  
Service Data ◽  
Exchanger Tube

Criteria are formulated for the development of acoustic vibration in transverse acoustic modes in steam generator tube banks, based on flow and acoustic parameters. Theoretical predictions are validated against available in-service data for nonvibrating and vibrating tube banks and published laboratory experimental data. The criteria can be used for the prediction of acoustic vibration in steam generator and heat exchanger tube banks both, in-line and staggered.

Acoustic Vibration Behavior of Full Size Steam Generator and Tubular Heat Exchanger In-Line Tube Banks: A Brief Note

2008 ◽  
Vol 130 (3) ◽  
Author(s):  
Frantisek L. Eisinger ◽  
Robert E. Sullivan
Keyword(s):  
Heat Exchanger ◽  
Steam Generator ◽  
Energy Parameter ◽  
Acoustic Resonance ◽  
Acoustic Vibration ◽  
Heat Exchanger Tube ◽  
Tubular Heat Exchanger ◽  
Full Size ◽  
Tube Banks ◽  
Exchanger Tube

Based on recent laboratory experimental data by Feenstra et al. (2004, “The Effects of Duct Width and Baffles on Acoustic Resonance in a Staggered Tube Array,” in Proceedings of the Eighth International Conference on Flow-Induced Vibration FIV 2004, E. de Langre and F. Axisa, eds., Paris France, Jul. 6–9, pp. 459–464; 2006, “A Study of Acoustic Resonance in a Staggered Tube Array,” ASME J. Pressure Vessel Technol., 128, pp. 533–540), it has been determined that for larger test section widths, the maximum acoustic pressures generated during acoustic resonance were greater by more than a factor of 4 than those predicted by Blevins and Bressler (1993, “Experiments on Acoustic Resonance in Heat Exchanger Tube Bundles,” J. Sound Vib., 164, 503–533). We have evaluated a great number of resonant and nonresonant cases from in-service experience of full size steam generator and tubular heat exchanger tube banks in order to see the general vibratory behavior of the full size units. Fifteen vibrating and twenty-seven nonvibrating cases were evaluated and compared to the Feenstra et al. relationship. It is shown that on average the results from the full size units correlate well with the relationship of Feenstra et al. A gap exists between the vibratory and the nonvibratory cases. The nonvibratory cases produce acoustic pressures, which are at or below the Blevins and Bressler relationship. From the results, it can be concluded that the full size units, regardless of their size and also acoustic mode, produce high acoustic pressures at resonance, with the maximum acoustic pressure on average more than 50–75 times higher than the input energy parameter defined by the product of Mach number and pressure drop through the tube bank. The results are tabulated and plotted for comparison.

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