Identification of the influence of fouling on the heat recovery in a network of shell and tube heat exchangers

Markowski, Mariusz; Trafczyński, Marian; Urbaniec, Krzysztof

doi:10.1016/j.apenergy.2012.08.038

Cited by 43 publications

(29 citation statements)

References 12 publications

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“…The main effects of fouling in heat exchangers can be summarized as the increase of the overall heat transfer resistance and the increase of the pressure drop due to the reduction of the cross-sectional flow area, which means losses in the heat transfer efficiency [1,2]. Among all the possible techniques available for fouling control in heat exchangers, the use of metal surfaces, which do not suffer from deposition phenomena, would be certainly one of the best options [3].…”

Section: Introductionmentioning

confidence: 99%

Use of a sol-gel hybrid coating composed by a fluoropolymer and silica for the mitigation of mineral fouling in heat exchangers

Oldani

Sergi

Pirola

et al. 2016

Applied Thermal Engineering

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The technology of the organic/inorganic hybrid coating was employed in the preparation of a hydrophobic coating (contact angle higher than 140°) for fouling mitigation on stainless steel heat transfer surfaces. A commercial triethoxysilane perfluoropolyethers was combined with a sol-gel silica network with the aim to increase the mechanical and thermal resistance of the films when exposed to aggressive liquid environments as the heat exchanging fluids. The experimentation on a shell and tube heat exchanger pilot plant confirmed the ability of the hybrid coating to prolong the crystallization fouling induction period of 200 h in respect to an uncoated heat exchanger, operating in the same conditions. Moreover, the fouling particles deposited on the coated heat transfer surfaces had only slight adhesion strength toward the coated surfaces and were easily removed by inducing higher wall shear stresses inside the tubes of the plant.

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Section: Introductionmentioning

confidence: 99%

Use of a sol-gel hybrid coating composed by a fluoropolymer and silica for the mitigation of mineral fouling in heat exchangers

Oldani

Sergi

Pirola

et al. 2016

Applied Thermal Engineering

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“…In this paper, revolution rate is 0.3 based on prior research [27]. 5. If there is a colony in an empire which is stronger than imperialist, the colony replace the current imperialist.…”

Section: 2optimization Of Cleaning Scheduling Using Imperialist Comentioning

confidence: 98%

“…Fouling causes loss in efficiency over the time, loss of production due to downtime for cleaning and extra maintenance. Since fouling cannot be avoided but can be mitigated, the effective fouling mitigation techniques in HEN are important [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Thermal and hydraulic impacts consideration in refinery crude preheat train cleaning scheduling using recent stochastic optimization methods

Biyanto

Ramasamy

Jameran

et al. 2016

Applied Thermal Engineering

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“…To solve this problem, Sahin et al calculated U 0 using fluid velocity data and monitored fouling by the fouling factor, R f [1]. Markowski et al also implemented more a detailed heat transfer coefficient at clean condition, U 0 , via estimation using flow and temperature data [2]. However, it may be difficult to use these methods if there are not sufficient instruments to measure necessary data.…”

Section: Introductionmentioning

confidence: 99%

Fouling Monitoring in Thermosiphon Reboiler

Kuwahara

Wibowo

Kuboyama

et al. 2014

Heat Transfer Engineering

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A method to monitor the fouling resistance of a heat exchanger, especially the thermosiphon reboiler, is presented. The historical hourly data of reboiler and distillation column are used to analyze fouling factor. The initial value of overall heat transfer coefficient and the current overall heat transfer coefficient are needed to calculate fouling resistance. Since the initial heat transfer coefficient is not constant but is affected by operating conditions such as shell/tube flow rate and temperature, a relationship between initial heat transfer coefficient and these operating conditions has to be developed to calculate the fouling factor. However, sometimes important data such as tube-side flow, inlet/outlet temperature of hot/cold fluid, and liquid level in shell/tube, which are needed to bring out the fouling condition of equipment, are missing. With such insufficient information, the fouling behavior can be analyzed by building a new equation based on measurable data. Dimensional analysis determines the structure of the function; parameters of each term are obtainable using short-term plant data after cleaning, assuming that there is no fouling during this period. As it is not easy to measure actual fouling factor temporal change in the heat exchanger tube, the calculated fouling resistance is compared with the relative amount of solid material removed from the equipment during cleaning, and it is evaluated qualitatively. The comparison shows good agreement. In addition, the evolution of the fouling resistance of some thermosiphon reboilers over a period of a few months or even years can be matched using this model.

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Identification of the influence of fouling on the heat recovery in a network of shell and tube heat exchangers

Cited by 43 publications

References 12 publications

Use of a sol-gel hybrid coating composed by a fluoropolymer and silica for the mitigation of mineral fouling in heat exchangers

Use of a sol-gel hybrid coating composed by a fluoropolymer and silica for the mitigation of mineral fouling in heat exchangers

Thermal and hydraulic impacts consideration in refinery crude preheat train cleaning scheduling using recent stochastic optimization methods

Fouling Monitoring in Thermosiphon Reboiler

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