Design of a test rig for cleaning studies and evaluation of laboratory‐scale experiments using pink guava puree as a fouling deposit model

A cleaning‐in‐place (CIP ) test rig is commonly used to investigate the cleanability of food apparatus. The main focus of this work was to design a laboratory‐scale cleaning test rig that operates at a fluid velocity of up to 2 m/s (Re  = 2.5 × 105) and that is capable of withstanding contact with detergents and disinfectants at temperatures from 20 to 70C. The design followed the standard design of a recirculating water tunnel that includes a test section. Computational fluid dynamic simulation was performed to find the minimum entry length to obtain fully developed flow at the test section. Cleanability of a flat stainless steel plate was investigated using pink guava puree as a physical fouling deposit model. The CIP process only considered the alkaline cleaning stage at cleaning condition of 0–2.0 wt % NaOH , 35–70C and 0.6–1.5 m/s. In general, removal of fouling deposit increased with increasing chemical concentration, temperature and velocity. These findings may be used to improve the CIP for real conditions in the food industry.

Text (Abstract) Design of a test rig for cleaning studies and evaluation of laboratory‐scale experiments using pink guava puree as a fouling deposit model.pdf Download (176kB) Official URL or Download Paper: https://onlinelibrary.wiley.com/doi/abs/10.1111/jf...

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