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Homogenizing valve design and its influence on milk fat globule dispersion: I. Low rate of flow (100 1 h–1, Re ≤ 3000)

Published online by Cambridge University Press:  01 June 2009

Leslie W. Phipps
Leslie W. Phipps
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading RG2 9 AT, UK
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Summary

The efficiencies of small capacity homogenizing valves of the high pressure type have been studied in relation to their design. The performance of a valve was strongly affected by the magnitude of the effective inlet diameter D0 of the seating for a given exit diameter D when D0/D > 0·5. The indications are that narrow mating faces situated such that D0/D → 1 should maximize performance. Milk fat globule dispersion varied regularly with a valve's face angle; optimum angles for maximum disruptive effect were about +35° and –30°. Perforated metal insets interposed between flat faces of a valve piece and its seat noticeably improved fat dispersion; reductions in mean globule diameter of up to 25% were obtained.

Variations in the sensitivity of different milks to homogenization were observed but avoided by appropriate experimental procedures.

Type
Original Articles
Information
Journal of Dairy Research , Volume 49 , Issue 2 , May 1982 , pp. 309 - 315
Copyright
Copyright © Proprietors of Journal of Dairy Research 1982

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References

REFERENCES

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