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Effect of Can Orientation on Heat Transfer Coefficients Associated with Liquid Particulate Mixtures During Reciprocation Agitation Thermal Processing

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Abstract

The objective of this work was to study the effect of container orientation on heat transfer during reciprocation agitation thermal processing of cans filled with liquid particulate mixtures. A vertical steam retort, retrofitted with a mechanism to provide horizontal reciprocation of containers, was used in this study. Cans of size 307 × 409, filled with 30 % (v/v) Nylon particles in a Newtonian fluid (100 % glycerin), were placed inside the reciprocating cage with longer axis in one of the three possible orientations viz. horizontal along axis of reciprocation (HA), horizontal perpendicular to axis of reciprocation (HP), or vertical (V). Reciprocation frequency (1–4 Hz) and amplitude (5–25 cm), and container headspace (2–12 mm) were varied according to a full factorial experimental design, and heat transfer coefficients and process times associated with each orientation were calculated. Additional experiments were also carried out in still mode to study the effect of container orientation in static processing mode. Results showed that for the static mode, HA and HP provided more rapid heating than V. For agitation processing, HA provided more rapid heat transfer followed by HP and then V, respectively. Reciprocation frequency and amplitude affected the heat transfer significantly (p < 0.05) in all orientations, while headspace was significant only for HA. An agitation intensity (AI) parameter was defined based on reciprocation frequency and amplitude. An AI value of 3.0 g was found sufficient for HA cans, while HP and V cans required a higher AI of 6.0 g for optimum heat transfer. This study could be used in designing of reciprocation thermal processes with optimal heat transfer delivery.

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Acknowledgments

This research was partially supported by funds from the Natural Sciences and Engineering Research Council (NSERC) of Canada.

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The authors declare no conflicts of interest.

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Authors and Affiliations

  1. Department of Food Science and Agricultural Chemistry, McGill University, 21111 Lakeshore Road, Sainte Anne de Bellevue, QC, H9X 3V9, Canada

    Anubhav Pratap Singh & Hosahalli S. Ramaswamy

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  1. Anubhav Pratap Singh
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  2. Hosahalli S. Ramaswamy
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Correspondence to Hosahalli S. Ramaswamy.

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Singh, A.P., Ramaswamy, H.S. Effect of Can Orientation on Heat Transfer Coefficients Associated with Liquid Particulate Mixtures During Reciprocation Agitation Thermal Processing. Food Bioprocess Technol 8, 1405–1418 (2015). https://doi.org/10.1007/s11947-015-1500-5

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  • DOI: https://doi.org/10.1007/s11947-015-1500-5

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