Types of Milk Cooling Systems For Milking Parlours

In today’s dairy industry, ensuring the quality and freshness of milk is paramount. One critical aspect of maintaining milk quality is proper cooling immediately after milking. Milk cooling systems play a crucial role in achieving this objective. In this blog, we’ll delve into the various types of milk cooling systems utilised in milking parlours, highlighting their features, benefits, and considerations.

Introduction to Milk Cooling Systems

Milk cooling systems are designed to rapidly reduce the temperature of freshly harvested milk to preserve its quality and inhibit bacterial growth. These systems are integral components of dairy farms and milking parlours, ensuring that milk remains safe for consumption and meets regulatory standards.

Importance of Milk Cooling in Milking Parlours

Efficient milk cooling is essential for maintaining milk quality and prolonging its shelf life. Proper cooling inhibits the growth of bacteria, yeast, and mould, thereby preventing spoilage and ensuring that milk retains its nutritional value and taste.

Traditional Milk Cooling Methods

Traditionally, milk cooling relied on methods such as pre-cooling tanks and ice banks. While these methods were effective to some extent, they had limitations in terms of efficiency and temperature control.

Pre-cooling Tanks

Pre-cooling tanks involve transferring milk from the milking parlour to large storage tanks equipped with cooling elements. While this method reduces the initial temperature of the milk, it may not provide sufficient cooling to meet modern standards.

Ice Banks

Ice banks utilize large volumes of ice to cool milk stored in insulated tanks. While this method can achieve adequate cooling, it requires significant manual labor and resources to maintain ice supplies.

Types of Modern Milk Cooling Systems

Advancements in technology have led to the development of various modern milk cooling systems, offering improved efficiency and temperature control.

Direct Expansion (DX) Systems

DX systems use refrigerant directly circulated through a cooling coil submerged in the milk. These systems offer rapid cooling rates and precise temperature control, making them ideal for large-scale dairy operations.

Ice-Water Systems

Ice-water systems involve circulating chilled water or a mixture of water and ice through a heat exchanger to cool the milk. These systems are energy-efficient and suitable for smaller dairy farms with moderate cooling requirements.

Plate Coolers

Plate coolers utilize a series of stainless steel plates to transfer heat from warm milk to cold water, resulting in rapid cooling. These compact and cost-effective systems are popular among small to medium-sized dairy farms.

Instant Cooling Systems

Instant cooling systems employ advanced technologies such as flash cooling or vacuum cooling to rapidly reduce the temperature of milk immediately after milking. These systems offer unparalleled cooling efficiency and are commonly used in high-volume dairy operations.

Factors to Consider When Choosing a Milk Cooling System

When selecting a milk cooling system for a milking parlour, several factors must be taken into account:

  • Capacity: The system should be capable of handling the volume of milk produced during peak milking times.
  • Efficiency: Consider the energy efficiency and cooling performance of the system to minimize operating costs.
  • Cost: Evaluate the initial investment cost as well as long-term maintenance expenses.
  • Maintenance Requirements: Choose a system that is easy to maintain and service to ensure uninterrupted operation.

Advantages of Modern Milk Cooling Systems

Modern milk cooling systems offer several advantages over traditional methods, including:

  • Faster cooling rates
  • Precise temperature control
  • Reduced energy consumption
  • Improved milk quality and shelf life

Challenges and Considerations

Despite their benefits, milk cooling systems may pose challenges such as:

  • Initial investment costs
  • Energy consumption
  • Maintenance requirements
  • Environmental impact

Recommended Milk Cooling System

Boumatic Glacier – FIC Bulktank G9

boumatic bulk tank

The Boumatic Glacier – FIC Bulktank G9 is a top-of-the-line milk cooling system renowned for its advanced design and engineering, ensuring smooth and dependable operation. It features precision-engineered evaporator plates that offer optimal cooling, consistent pressure drops, uniform refrigerant distribution, and efficient oil return. This results in highly cost-effective operation, utilizing environmentally friendly refrigerants. The bulk tanks come in capacities ranging from 2000 to 30,000 liters.

Key technical specifications include:

  • Manufactured with AISI 304 stainless steel inner tank and outer casing for durability.
  • Equipped with a millimeter stainless steel dip-stick with a conversion table for easy measurement of milk level.
  • Utilizes a non-icing cooling system, ensuring effective cooling even at low filling levels.
  • Operates on a direct expansion cooling system with R404A refrigerant for all models.
  • Complies with EN 13732 standards for quality and safety.
  • Features automatic washing controlled by FIPO 1 milk-controller, offering efficient cleaning with low water and detergent consumption.

Overall, the Boumatic Glacier – FIC Bulktank G9 is a high-performance milk cooling solution designed to meet the rigorous demands of dairy operations, offering reliability, efficiency, and environmental sustainability

Milk Cooling Systems Modules to Consider

When evaluating milk cooling systems, it’s essential to consider various modules that can enhance efficiency, reduce costs, and improve overall performance. Two innovative products, the Opti-Stor Heat Recovery System and the OptiFlo CF, offer unique features that can significantly contribute to the effectiveness of milk cooling operations.

Opti-Stor Heat Recovery System

The Opti-Stor Heat Recovery System introduces a groundbreaking approach to milk cooling by incorporating a double-walled heat exchanger and water storage system. This system is designed to capture the heat generated during the milk cooling process and utilize it to heat water, rather than dissipating it as waste heat. By harnessing this thermal energy, the Opti-Stor Heat Recovery System can achieve substantial savings of up to 65% on water heating costs. This innovative approach not only enhances the sustainability of dairy operations but also improves cost efficiency.

OptiStor Heat Recovery

OptiFlo CF

The OptiFlo CF offers a solution to optimize milk pump speed control, resulting in significant cost savings and improved milk quality. This electronic milk pump speed controller operates a 3-phase milk pump at variable speeds during milking, particularly when used in conjunction with the new analogic milk level probe. By adjusting pump speed according to milk flow rates, the OptiFlo CF ensures gentle milk transportation, minimizing the risk of slug-flow and preserving the quality of the milk. Furthermore, when paired with a pre-cooling plate cooler, the OptiFlo CF maximizes heat exchange efficiency by operating the milk pump at the slowest speed possible, based on milk flow and preset minimum speed settings. This integration optimizes cooling performance, ensuring consistent and efficient milk cooling operations.



In conclusion, milk cooling systems are essential components of modern milking parlours, ensuring the quality and safety of milk from farm to table. By understanding the various types of milk cooling systems available and their respective features, dairy producers can make informed decisions to optimize milk quality and operational efficiency.


  1. How do milk cooling systems contribute to energy efficiency?
    • Modern milk cooling systems utilize advanced technologies such as heat recovery and variable speed compressors to minimize energy consumption.
  2. Can milk cooling systems be retrofitted into existing milking parlours?
    • Yes, many milk cooling systems can be retrofitted into existing milking parlours with minimal modifications, providing an efficient upgrade solution.
  3. What maintenance is required for milk cooling systems?
    • Regular maintenance tasks for milk cooling systems include cleaning, lubrication, and periodic inspection of components such as compressors and heat exchangers.
  4. Are there government incentives available for investing in milk cooling technology?
    • Some regions offer grants or subsidies for dairy farmers investing in energy-efficient milk cooling systems, helping to offset initial costs and promote sustainability.