1Ph.D.Scholar, Dairy Engineering Division, ICAR-National Dairy Research Institute, Karnal–132001 (Haryana), India
2Principal Scientist, Dairy Engineering Division, ICAR-National Dairy Research Institute, Karnal–132001 (Haryana), India
3Senior Scientist, Dairy Engineering Division, ICAR-National Dairy Research Institute, Karnal–132001 (Haryana), India
4C.T.O, Dairy Engineering Division, ICAR-National Dairy Research Institute, Karnal–132001 (Haryana), India
5Scientist, Dairy Engineering Division, ICAR-National Dairy Research Institute, Karnal–132001 (Haryana), India
The objective of the research was to study the cooling behaviour of multi component phase change coolant (MCPCC) of ethylene glycol (EG), sodium chloride (NaCl) and water. For the formulation of MCPCC, EG concentration was used from a ratio of 1:1 to 1:8 (EG: water) along with 0 to 5% NaCl. Trials were conducted to study the effect of EG and NaCl concentration on the cooling characteristics of MCPCC. The typical cooling characteristics of MCPCC were reflected by the presence of a dip in the cooling curve during the formation of ice crystals and super cooling. The temperature drop (AT = 27°C) for different concentrations of EG and NaCl blends was maximum during one hour of cooling. Developed MCPCC blends effectively reduced the concentration of EG and could potentially reduce the hazardous impact on the environment. Cooling characteristics data of these phase change materials (PCM) will help to decide their industrial application in various cooling operations.
Antifreeze chemical, Cooling curve, Ethylene glycol, Freezing, Temperature
