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A new transient thermal fouling probe for cross flow tubular heat exchangers

Abstract : The present probe is developed in order to accurately estimate in situ not only the convective exchange coefficient but also the fouling thickness of heat exchangers from a reliable transient state estimation method.The originality of the estimation method consists in considering a global response time of the system in fouling conditions to be compared to clean conditions. The sensitivity function is then built from the experimental signal without precise knowledge about the model or the absolute thermophysical properties. The reliability of the method is demonstrated in theoretical cases and with calibrated experiments.
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L. Perez, Bruno Ladevie, P. Tochon, J.C. Batsale. A new transient thermal fouling probe for cross flow tubular heat exchangers. International Journal of Heat and Mass Transfer, Elsevier, 2009, 52 (1-2), pp.407 - 414. ⟨10.1016/j.ijheatmasstransfer.2008.05.029⟩. ⟨hal-01651393⟩

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