2007
DOI: 10.2202/1934-2659.1073
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Development of Heat Exchanger Fouling Model and Preventive Maintenance Diagnostic Tool

Abstract: The Crude Preheat Train (CPT) is a set of large heat exchangers which recover the waste heat from product streams back to preheat the crude oil. The overall heat transfer coefficient in these heat exchangers may be significantly reduced due to fouling. One of the major impacts of fouling in CPT operation is the reduced heat transfer efficiency. The objective of this paper is to develop a predictive model using statistical methods which can a priori predict the rate of the fouling and the decrease in heat trans… Show more

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Cited by 4 publications
(3 citation statements)
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“…In Figure 2(a), the hydraulic limit (HL), indicated by the vertical line, was set at 5 times the value of the clean pressure drops (as recommended in ref. 19 ), whilst the thermal limit (TL), indicated by the horizontal line, was set to a minimum thermal performance of 30% of the clean one, as recommended by Zabiri et al 57 .…”
Section: Dynamic Thermo-hydraulic Monitoring: Th-λ Plotmentioning
confidence: 99%
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“…In Figure 2(a), the hydraulic limit (HL), indicated by the vertical line, was set at 5 times the value of the clean pressure drops (as recommended in ref. 19 ), whilst the thermal limit (TL), indicated by the horizontal line, was set to a minimum thermal performance of 30% of the clean one, as recommended by Zabiri et al 57 .…”
Section: Dynamic Thermo-hydraulic Monitoring: Th-λ Plotmentioning
confidence: 99%
“…Useful limit lines refer to minimum acceptable performance and may be operational constraints (e.g., maximum allowable pressure drop) or design targets (e.g., minimum heat duty). In Figure a, the hydraulic limit (HL), indicated by the vertical line, was set at 5 times the value of the clean pressure drops (as recommended in ref ), while the thermal limit (TL), indicated by the horizontal line, was set to a minimum thermal performance of 30% of the clean one, as recommended by Zabiri et al These limits are typically set by engineering personnel. By comparing the location and evolution of the TH-line relative to the TL and HL, one can immediately obtain useful insights into the dominant impact of fouling (hydraulic or thermal).…”
Section: Dynamic Thermo-hydraulic Monitoring: Th-λ Plotmentioning
confidence: 99%
“…While the discussion of fouling phenomena is beyond the scope of this paper the interested reader can consult a large number of literature works on this subject [44][45][46][47][48][49][50][51].…”
Section: Heat Exchangers Foulingmentioning
confidence: 99%