Characterization of multi-component antifreeze liquids for sub-zero cooling applications
Antifreeze liquids for sub-zero cooling applications
DOI:
https://doi.org/10.21921/jas.v10i04.14383Keywords:
Antifreeze, Cooling application, Concentration, Formulation, Multi componentAbstract
The aim of this research was to formulate and compare multi component antifreeze liquids (MCAFLs), which can be used as coolant for food cooling applications at sub-zero temperatures. Different antifreeze agents like propylene glycol (PG) and NaCl were used for the preparation of MCAFLs. Trials were carried out to study the effect of PG and NaCl concentration on the cooling behavior of MCAFLs. The typical cooling characteristics of MCAFLs were reflected by the presence of a dip in the temperature profile during the formation of ice crystals and super cooling. At higher concentration of PG and NaCl the degree of super-cooling was less while freezing point depression and cooling energy storage capacity was high. The temperature drop for various PG and NaCl blend concentrations was greatest (∆T = 27 °C) during the first hour of cooling. The developed formulations can effectively reduce degree of supercooling and lower the freezing point and enhance cooling storage. MCAFLs blends have potential to be used for sub-zero cooling application in food industry.
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