Food Chilling

Chilling needs vary significantly from one application to another. To ensure the best fit for your individual process flow, we have developed a variety of delivery systems and devices that bring the environmental and quality benefits of gaseous, liquid and solid (dry ice) cryogenic chilling agents to stationary and mobile applications.

Detail shot of ACCU-CHILL Bottom injection chilling system.


Bottom injection systems

Linde has an in-line chilling system called ACCU-CHILL ® BI . It is installed on blenders, mixers, tumblers, or batch vessels for the purpose of reducing the foodstuff temperature.

Linde’s ACCU-CHILL ® BI, better referred to as 'Bottom Injection,' reduces the temperature of the solid or liquid food products by injecting liquid carbon dioxide (LIC) or nitrogen (LIN) cryogens into the mixing or storage vessel.  The cryogen is controlled by measuring several parameters, such as product viscosity, temperature and time to achieve desired temperature or product viscosity.

For example, meat customers will use ACCU-CHILL ® 'Bottom Injection' to achieve precise temperature control of products such as ground beef and chicken for the purpose of forming hamburger patties or nuggets.

Noodles wirh red sauce (tomato), close-up


In the food industry, cooling hot consumable liquids such as sauces, soups, or high viscosity “paste” products  present manufacturers with a number of challenges. Manufacturers need to rapidly cool sauces to minimize bacterial growth, improve shelf-life and eliminate production bottlenecks.

It is thus critical to lower the temperature as fast as possible to reduce food safety risks and maintain product quality. Linde’s ACCU-CHILL ® SC system uses our patented continuous cryogenic injector technology to inject extremely cold liquid nitrogen (LIN) directly into a specially designed tubular mixing chamber. The low temperature of the LIN (–196 ºC) efficiently transfers cold to the sauce without freezing it or damaging the quality.

Loaf of bread


The bakery industry must manage consistent dough temperatures to achieve quality finished products. Bakers for years used water, ice, or jacketed-refrigerated vessels to lower dough temperatures.  All of these methods have limitations and can slow-down the chilling process.  

ACCU-CHILL ® IC, Ingredients Chilling System, inject cryogens directly into the flour or other dry ingredients within the pneumatic transfer system which transport flour from the storage silo to the dough mixers.  Precise temperature control, rapid temperature reduction, and batch-to-batch consistency results in product quality and reduce risk of food contamination. 

Snow, Close up.

Snow Horns

Linde carbon dioxide snow horns provide a simple, cost effective method to accurately control temperature conditions in your chilling operations

Snow horns are easily adaptable to most existing chilling systems. At the heart of Linde’s line of carbon dioxide snow generating equipment are Linde’s high and low velocity snow horns. Linde developed low and high velocity design snow horns to suit most conventional and hundreds of custom applications

The unique 3.75 high velocity Snow Horn with its insulated stainless steel body is designed with an annular sub-cooling chamber and provides unparalleled efficiency in converting liquid carbon dioxide into snow. It is used in many cases to produce snow into closed containers such as a mixer or blender.

The Low Velocity Snow Horn (LVSH) series comes in both a 7 inch diameter and a 3.5 inch diameter model and is made of annodised aluminium or stainless steel. This horn is designed to provide a low velocity output of snow for placement in open containers such as boxes or bins without the spillage that would result from a high velocity horn.

The key benefits are:

    Easily adaptable to most mixing and blending equipment
    High and low velocity designs
    High refrigeration and chilling capacity in a small package
    Low capital cost
    Simple to install and easy to use
    Precise temperature control when combined with a Linde Chilling Control Panel.

Dry Ice pellets P9Q1957, ICEBITZZZ

Pelletizers: On-Site Dry Ice

Linde offers on-site cost effective dry ice or carbon dioxide snow solutions

Linde has technology that makes it possible for the dry ice user to manufacture dry ice at the point of use. We can develop a solution for 'on demand' dry ice with an optional recovery unit, which recycles the gas from the dry ice production system back into a liquid for reuse. This feature reduces typical dry ice losses experienced with alternative product offers.

On-site production of dry ice provides:

    Dry ice pellets in any diameter from 1.7mm (1/16") to 16mm (5/8")
    Available and flexible as you need it
    Lower overall dry ice cost
    Reduced sublimination losses
    Minimised risk of running out of supply.

Turkey meat in package

Dri-Pack® Systems 

The Linde Dri-Pack chilling system is the solution for processors who need instant and precise chilling of perishable foods directly in the shipping package.

The Linde Dri-Pack system is designed to automatically fill a predetermined amount of carbon dioxide snow at a very gentle velocity into boxes packed with meat products or perishable goods. Dri-Pack can be controlled automatically or manually on conveyorised packing lines. This cooling technology provides a means to add portable coolant, dry ice, which will safeguard the food quality wholesomeness and improves the customer’s capability of maintaining the extended cold chain. 

The key benefits are:

    Instant chilling
    Improves product yield
    Precision placement of carbon dioxide into open boxes
    Easily adaptable to most conveyor lines
    Simple controls
    Reduces labour costs

A FROSTCRUISE branded LINDE In-Transit Refrigeration Truck using Liquid Nitrogen (LIN)

FROSTCRUISE®:: In-Transit Refrigeration Getting the cold chain under control with an eco-friendly, low-noise, low-maintenance in-transit cryogenic refrigeration solution

We developed our FROSTCRUISE® indirect cryogenic refrigeration system to meet the technical, cost and environmental pressures facing the trucking industry today. FROSTCRUISE is an efficient, economical, cryogenic replacement for mechanical, diesel-powered refrigeration units. Not only do mechanical units have a high carbon footprint due to diesel consumption, they are also relatively noisy, expensive to maintain and reliant on potentially harmful refrigerants.

FROSTCRUISE overcomes these environmental challenges by using liquid nitrogen (LIN) as the refrigerant. The LIN is stored at a temperature of -196°C in an insulated on-board tank. It is piped through a heat exchanger with a large surface area to release its cooling power. This causes the liquid nitrogen to evaporate and high-velocity fans circulate the cold air around the truck’s container.

Highlights at a Glance
• Rapid cooling power with extremely stable temperature control
• Reduced carbon footprint through diesel savings
• Elimination of hazardous refrigerants (e. g. R404A)
• Low-noise design for easy deliveries at night time or to residential areas
• Longer service life compared with mechanical solutions
• Cost efficiencies due to ease of service and maintenance
• Reduced downtime – moving parts down to a single fan
• Image-building potential through active support for more sustainable transport options.

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