
What is a milk cooling tank?
Milk cooling tanks are used to store and cool freshly collected milk. Using milk cooling tanks can quickly lower the milk temperature, ensuring its safety for drinking. Nearly 70% of dairy farmers choose to use milk cooling tanks to keep milk fresh and slow bacterial growth. You can see how fast cooling makes a difference in milk safety: Temperature (°C) Time to reach 105 cfu mL−1 (min) 10 No increase in microbial count 14 1020 16 600 20 480 Milk cooling tanks offer a simple way to keep milk safe and fresh. Key Takeaways How does a milk cooling tank work? Cooling process After milking, the milk must be immediately transferred to cooling tanks for cooling. According to dairy safety standards, milk should be cooled from approximately 35°C (95°F) to below 4°C (39°F) within two hours of milking, and ultimately maintained at a storage temperature of 1–3°C (33–38°F). Rapid cooling significantly slows microbial growth and is crucial for maintaining milk freshness. Cooling systems typically employ process chillers, which absorb heat from the milk through refrigerant circulation. Some systems also include pre-cooling units that utilize well water for pre-cooling, reducing the load on the main refrigeration system. Operation steps Tip: Always


