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https://www.sciencedirect.com/science/article/pii/S0889974605001659
There are several classifications of tube motion within a heat exchanger. Tube motion may be classified as impact, sliding, or combined impact and sliding (Ko, 1985; Kim et al., 1988).The existence of any of these motion types depends on the support geometry, the …Cited by: 21
https://www.researchgate.net/publication/245225096_A_new_tubesupport_impact_model_for_heat_exchanger_tubes
An impact model for heat exchanger tubes that considers their support width was proposed by Hassan et al., and the dynamics of the loosely supported tubes was computed [12, 13, 21]. Knudsen et al ...
https://asmedigitalcollection.asme.org/PVP/proceedings/PVP2003/41561/107/302666
Hassan, M. A., Weaver, D. S., and Dokainish, M. A. "A New Tube/Support Impact Model for Heat Exchanger Tubes in Loose Supports." Proceedings of the …Author: M. A. Hassan, D. S. Weaver, M. A. Dokainish
http://adsabs.harvard.edu/abs/2005JFS....21..561H
Heat exchanger tubes are often loosely supported at intermediate points by plates or flat bars. Flow-induced vibrations result in fretting wear tube damage due to impacting and rubbing of tubes against their supports. Prediction of tube response relies on modelling the nonlinear tube/support interaction.
https://www.sciencedirect.com/science/article/pii/S0029549308002653
Heat exchanger tube damage due to cross flow-induced vibrations can take many forms. Tube failure can occur due to thinning and cracking at the mid-span as a result of clashing between the tubes. Vibrations induced by cross fluid flow can also be responsible for fretting wear at the supports as a result of tube/support impact and sliding forces.Cited by: 30
https://www.researchgate.net/project/Heat-exchanger-with-finned-tubes
In this project a new form of fins for tube heat exchangers is provided, which gives a greater heat transfer coefficient and hence a smaller mass of exchanger surfaces compared to the classical ...
https://asmedigitalcollection.asme.org/pressurevesseltech/article/131/3/031305/461613/A-Probabilistic-Assessment-Technique-Applied-to-a
A Probabilistic Assessment Technique Applied to a Cracked Heat Exchanger Tube Subjected to Flow-Induced Vibration Brady T. Vincent ... The resulting vibration can lead to component failure by fretting wear due to tube-to-tube support impact or by fatigue. Due to manufacturing considerations, many parameters such as support clearance, alignment ...Cited by: 5
https://macsphere.mcmaster.ca/bitstream/11375/18025/1/Yetisir_Metin_1985Oct_ME.pdf
THE VIBRO-IMPACT RESPONSE OF HEAT EXCHANGER U-BEND . ... CHAPTER 3. MATHEMATICAL MODELLING OF TUBE SUPPORT INTERACTION 38 3.1 A MODEL FOR FLAT BAR SUPPORTS 38 3.2 THE SPRING FORCE 42 ... Depending on the tube …Cited by: 1
https://smartprocessdesign.com/finned-tubes-increase-surface-area/
You are going to get a lot more surface area by adding these fins, without much increasing the size of your heat exchanger. This can improve your heat exchange for a given size of exchanger, or let you buy a smaller heat exchanger to do the same duty. However, improving A with fins on the outsides of the tubes is only going to help the shell ...
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