scholarly journals Investigation of the Effects of the Incident Flow Angle on Vibration Behavior in Heat Exchanger Tube Bundle

2019 ◽  
Vol 13 (2) ◽  
pp. 186-194
Author(s):  
Muhammad Usman ◽  
Shahab Khushnood ◽  
Luqman Nizam ◽  
Waqas Tanveer ◽  
Ahmad Shafi ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Tube Bundle ◽  
Incident Flow ◽  
Heat Exchanger Tube ◽  
Flow Angle ◽  
Vibration Behavior ◽  
Exchanger Tube

Recent Design Technologies of Moisture Separator Reheater

2009 ◽  
Author(s):  
Jun Manabe ◽  
Jiro Kasahara ◽  
Toshiki Kojima ◽  
Issaku Fujita
Keyword(s):  
Heat Exchanger ◽  
Nuclear Power ◽  
Tube Bundle ◽  
Current Model ◽  
Temperature Oscillation ◽  
Separation Performance ◽  
Heat Exchanger Tube ◽  
Water Test ◽  
Moisture Separator ◽  
Exchanger Tube

This paper introduces the development of the current model Moisture Separator Reheater (MSR) for nuclear power plant (NPP) turbines, commercially placed in service in the period 1984–1997, focusing on the mist separation performance of the MSR along with drainage from heat exchanger tubes. A method of predicting the mist separation performance was devised first based on the observation of mist separation behaviors under an air-water test, then developed for the application to predict under the steam conditions, followed by the verification in comparison with the actual results of a steam condition test. The instability of tube drainage associated with both sub-cooling and temperature oscillation, which may adversely affect the seal welding of tubes to tube sheet owing to thermal fatigue, was measured on an existing unit both to clarify the behaviors and to develop a method to suppress them. Both methods were applied to current model MSR and the effectiveness of the methods was demonstrated. A new concept MSR for 1,700 MW class APWR units is put in perspective based on the technologies, alongside a multidisciplinary optimum design evaluating the heat exchanger tube bundle.

Acoustic Resonance in Heat Exchanger Tube Bundles—Part I: Physical Nature of the Phenomenon

1987 ◽  
Vol 109 (3) ◽  
pp. 275-281 ◽  
Author(s):  
R. D. Blevins ◽  
M. M. Bressler
Keyword(s):  
Heat Exchanger ◽  
Gas Flow ◽  
Tube Bundle ◽  
Physical Nature ◽  
Transverse Mode ◽  
Acoustic Resonance ◽  
Heat Exchanger Tube ◽  
Sound Levels ◽  
Tube Bundles ◽  
Exchanger Tube

The intense acoustic resonance resulting from gas flow across a bank of heat exchanger tubes in a duct has been investigated experimentally and theoretically. At low gas velocities, the acoustic tone emanating from tube bundles increases in proportion to the flow velocity. When the frequency approaches a bound acoustic transverse mode of the tube bundle, intense sound can result. Sound levels as high as 173 db were measured within the bundle. During resonance, the sound correlates vortex shedding from the tubes and the pressure drop increases in some bundles.

A Comparative Study of Cross-Flow Induced Vibrations in Heat Exchanger Tube Bundles Using Bond Graph Approach

2005 ◽  
Author(s):  
M. Afzaal Malik ◽  
Badar Rashid ◽  
Shahab Khushnood
Keyword(s):  
Heat Exchanger ◽  
Comparative Study ◽  
Tube Bundle ◽  
Cross Flow ◽  
Bond Graph ◽  
Heat Exchanger Tube ◽  
Flow Induced Vibration ◽  
Study Results ◽  
Tube Bundles ◽  
Exchanger Tube

Flow-induced vibration (FIV) has been a major concern in the nuclear and process industries involving steam generator and heat exchanger tube bundle design. Various techniques and models have been developed and used for the analysis of cross-flow induced vibration of tube bundles. Bond Graph approach has been applied to existing FIV excitation models, followed by a comparative study. Results have been obtained using 20-SIM software. It is expected that the current approach will give a new dimension to the FIV analysis of tube bundles.

Determination of the stress-strain condition of the heat exchanger tube bundle

1968 ◽  
Vol 4 (6) ◽  
pp. 458-459
Author(s):  
V. M. Dolinskii ◽  
P. S. Marchenko ◽  
G. Ya. Shevchenko ◽  
V. M. Eselev ◽  
L. N. Koptelov
Keyword(s):  
Heat Exchanger ◽  
Tube Bundle ◽  
Strain Condition ◽  
Heat Exchanger Tube ◽  
Stress Strain ◽  
Exchanger Tube

The Key Technologies in Designing of a Special Machine for Heat Exchanger Tube Bundle Drawing and Assembling

2014 ◽  
Vol 496-500 ◽  
pp. 793-796
Author(s):  
Ke Yang ◽  
Shang Jun Guan ◽  
Jian Bo Jia ◽  
Chang Zhong Wu
Keyword(s):  
Heat Exchanger ◽  
High Efficiency ◽  
Tube Bundle ◽  
Low Cost ◽  
Heat Exchanger Tube ◽  
Special Equipment ◽  
Special Machine ◽  
Key Technologies ◽  
Petroleum Chemical ◽  
Exchanger Tube

The Key Technologies in Designing of a special machine for heat exchanger tube bundle drawing and assembling were discussed. Heat exchanger tube bundle drawing and assembling machine is a special equipment for maintenance of heat exchanger of petroleum, chemical and other enterprises,specifically for removal and installation of the heat exchanger tube bundle .This paper introduces a self-developed heat exchanger tube bundle drawing and assembling machine’s overall structure, driving principle, hydraulic system and electrical control system’s design. The bundle drawing and assembling machine has large force, drawing and assembling are stable, safe and high efficiency and low cost and so on advantages, it has been put into mass production and gets a good evaluation.

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