期刊
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
卷 52, 期 -, 页码 133-139出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2014.08.012
关键词
Heat transfer; Ice cream; Thermal protection; Ice crystal size; Phase change material (PCM)
资金
- European Community's Seventh Framework Programme (FP7) [245288]
Ice cream is a very temperature sensitive product and temperature variations during the storage and distribution steps may result in a reduction of quality. It is possible to improve the ice cream storage and transportation conditions by using an additional packaging with a low thermal diffusivity. This paper studies a phase change material (PCM) packaging and compares its performance to a polystyrene packaging configuration. The impact on temperature fluctuations and ice crystal size distribution was characterized experimentally during long term storage and temperature abuse. The results show that the use of an additional PCM packaging has a significant impact on the final quality of the product by keeping ice cream temperature stable and close to the phase change temperature of the PCM material. These results were compared with the insulation material results and discussed, showing that a material with a buffering heat capacity can be more efficient to reduce temperature fluctuations than a low conductivity material, and that the same results can be usually obtained with a much thinner layer of material. (C) 2014 Elsevier Ltd and IIR. All rights reserved.
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