What are the specific applications of calcium chloride dihydrate in the refrigeration industry?

Calcium Chloride Dihydrate (CaCl₂・2H₂O) is applied in refrigeration field based on the low freezing point property of its aqueous solution and stable heat conduction performance:

I. Refrigeration Principle: Core Advantages of Calcium Chloride Dihydrate 
Calcium Chloride Dihydrate (CaCl₂・2H₂O) is applied in refrigeration field based on the low freezing point property of its aqueous solution and stable heat conduction performance: 
Freezing point lowering effect: When calcium chloride dihydrate is dissolved in water, Ca²⁺ and Cl- ions are formed, which destroys hydrogen-bonding structure of water, and makes the freezing point of solution decrease significantly with increasing concentration. When dissolved in water, Ca²⁺ and Cl- ions are formed, destroying the hydrogen bonding structure of water, so that the freezing point of the solution decreases significantly with increasing concentration. For example: 
30% concentration of calcium chloride dihydrate aqueous solution freezing point can reach - 55 ℃, much lower than water 0 ℃, suitable for low-temperature refrigeration scene.
Thermal conductivity: The thermal conductivity of its aqueous solution (about 0.5-0.6 W/(m・K)) is better than that of most organic refrigerants (e.g., aqueous ethylene glycol), and it can efficiently transfer the cooling capacity.
Economy: Compared with Freon and other refrigerants, calcium chloride dihydrate has low cost (industrial grade about 1500-1800 yuan / ton), non-toxic, non-flammable and non-explosive, in line with environmental requirements.
Specific application scenarios and technical details 
1. Industrial refrigeration system: low-temperature brine preparation 
Application scenarios: 
Chemical reactor cooling (e.g., synthesis of pharmaceutical intermediates, pesticide low-temperature condensation reaction); 
Food freezing and processing (e.g., continuous ice cream freezer, meat quick-freezing tunnels); 
Cold-chain logistics and warehousing (circulation refrigeration in the cold storage).