Flow pattern of non-Newtonian fluids in reciprocating scraped surface heat exchangers

摘要

The flow pattern of a pseudoplastic fluid inside a scraped surface heat exchanger has been obtained by means of Particle Image Velocimetry. The scraping device consists of a rod with semicircular pieces mounted on it, which are in contact with the inner surface of the pipe. The whole moves axially and thus the pieces scrape the inner surface of the pipe, in order to avoid fouling formation and enhance heat transfer.