Warm-Up Characteristics of Cooled Liquid Sealed in a Thin-Packet: A Study

Milk is collected, processed and packed at milk processing centres far from user location. Refrigerated and insulated vans carry milk packets in crates to the city/town where they are offloaded at the milk distributor, then get distributed to local users (residents) during which it gets warm due to...

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Main Authors: Alex Anoushka, Tamma Bhaskar
Format: Article
Language:English
Published: EDP Sciences 2025-01-01
Series:E3S Web of Conferences
Online Access:https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/35/e3sconf_cesee2025_03003.pdf
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author Alex Anoushka
Tamma Bhaskar
author_facet Alex Anoushka
Tamma Bhaskar
author_sort Alex Anoushka
collection DOAJ
description Milk is collected, processed and packed at milk processing centres far from user location. Refrigerated and insulated vans carry milk packets in crates to the city/town where they are offloaded at the milk distributor, then get distributed to local users (residents) during which it gets warm due to heat transfer from ambient. To keep low bacterial count, pasteurized milk needs to be kept between 5-10 °C during transport, distribution and storage. This works tries to characterize the warm up of milk in packets using liquid water as surrogate due to similarity in the properties. The warm-up was studied for single isolated packets as well as water packets packed in crate. Liquid water was sealed in food grade LLDP plastic packet and cooled in refrigerator to bring the temperatures down to 3-5 °C. The packets were then taken out and suspended in ambient air at different temperatures (18°-25°C) as well as water packets stacked in crate as is done while transporting. It has been found the single isolated water packets take 1.5 hours to raise by 6.5 °C (from 7.5 °C) while same packets stacked in crate takes 3.5 hours for the same temperature rise when subjected to 20°C ambient temperature.
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spelling doaj-art-91504ae23a7a43bba5b3a3fc607958932025-08-20T03:31:48ZengEDP SciencesE3S Web of Conferences2267-12422025-01-016350300310.1051/e3sconf/202563503003e3sconf_cesee2025_03003Warm-Up Characteristics of Cooled Liquid Sealed in a Thin-Packet: A StudyAlex Anoushka0Tamma Bhaskar1Department of Mechanical and Aerospace Engineering, Ecole Centrale School of Engineering, Mahindra UniversityDepartment of Mechanical and Aerospace Engineering, Ecole Centrale School of Engineering, Mahindra UniversityMilk is collected, processed and packed at milk processing centres far from user location. Refrigerated and insulated vans carry milk packets in crates to the city/town where they are offloaded at the milk distributor, then get distributed to local users (residents) during which it gets warm due to heat transfer from ambient. To keep low bacterial count, pasteurized milk needs to be kept between 5-10 °C during transport, distribution and storage. This works tries to characterize the warm up of milk in packets using liquid water as surrogate due to similarity in the properties. The warm-up was studied for single isolated packets as well as water packets packed in crate. Liquid water was sealed in food grade LLDP plastic packet and cooled in refrigerator to bring the temperatures down to 3-5 °C. The packets were then taken out and suspended in ambient air at different temperatures (18°-25°C) as well as water packets stacked in crate as is done while transporting. It has been found the single isolated water packets take 1.5 hours to raise by 6.5 °C (from 7.5 °C) while same packets stacked in crate takes 3.5 hours for the same temperature rise when subjected to 20°C ambient temperature.https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/35/e3sconf_cesee2025_03003.pdf
spellingShingle Alex Anoushka
Tamma Bhaskar
Warm-Up Characteristics of Cooled Liquid Sealed in a Thin-Packet: A Study
E3S Web of Conferences
title Warm-Up Characteristics of Cooled Liquid Sealed in a Thin-Packet: A Study
title_full Warm-Up Characteristics of Cooled Liquid Sealed in a Thin-Packet: A Study
title_fullStr Warm-Up Characteristics of Cooled Liquid Sealed in a Thin-Packet: A Study
title_full_unstemmed Warm-Up Characteristics of Cooled Liquid Sealed in a Thin-Packet: A Study
title_short Warm-Up Characteristics of Cooled Liquid Sealed in a Thin-Packet: A Study
title_sort warm up characteristics of cooled liquid sealed in a thin packet a study
url https://www.e3s-conferences.org/articles/e3sconf/pdf/2025/35/e3sconf_cesee2025_03003.pdf
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