A Bulk Milk Chiller is a cooling system used in dairy plants and milk collection centers to rapidly cool and store milk at a safe temperature, usually below 4°C, to prevent bacterial growth and maintain quality. Key Points: Purpose: Immediate cooling of fresh milk after collection. Working Principle: Uses a refrigeration system to circulate coolant in a jacket or plate system around the milk tank. Design: Insulated stainless-steel tank with agitator for uniform cooling. Capacity: Ranges from small (200 L) to large (10,000 L) models. Types: 1. Direct expansion (DX) – refrigerant flows in direct contact with tank walls. 2. Ice bank – stores ice in water to cool milk during peak load. Advantages: Maintains milk freshness, reduces spoilage, improves shelf life, and meets quality standards.
