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Refrigeration for tunnels, spirals and blast freezers

Refrigeration systems for tunnels, spirals and blast freezers, designed around the product and production throughput.

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Illustrative visualization of a spiral freezer in a food processing plant

How it works and what we assess

Freezing requires heat removal from the product, including the heat associated with water changing phase. In forced-air systems, an evaporator cools the air and fans move it over the product. Exposure time and product core temperature are part of the study.

How the system works

  1. Define the product

    Product form, size, packaging and inlet temperature determine the requirement.

  2. Organize freezing

    Evaluate a tunnel, spiral or batch blast freezer according to production needs.

  3. Select the refrigeration system

    Calculate the cooling source for the process and its operating time.

Why these systems are used

Compressor racks ↗

A compressor plant can be evaluated as the refrigeration source for the process load and operating regime.

NH₃ / CO₂ cascade ↗

An NH₃ / CO₂ cascade is an architecture to consider for industrial low-temperature requirements.

Our recommendation

First define kilograms per hour or per batch and freezing time. A tunnel or spiral can integrate with continuous production; a batch blast freezer follows loading and unloading cycles.

Before selection

  • Confirm inlet temperature and the target product core temperature.
  • Coordinate airflow, defrost, cleaning and handling with the process integrator.
  • Distinguish the refrigeration system from the conveyor, structure and other equipment forming the tunnel or spiral.

Equipment to assess for this application

IceSquare compressor rack using a conventional refrigerant, labeled R404A on the equipment

IS RACK

Compressor racks

Parallel compressor systems for commercial and industrial refrigeration. We manufacture racks using conventional refrigerants, with configurations defined for each application.

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IS BLOCK equipment rendering included in the 2023 IceSquare brochure

IS BLOCK

Semi-industrial refrigeration

Equipment for heavy commercial and semi-industrial applications, integrating compressors and controls to meet project needs.

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IceSquare cascade system with NH₃ and CO₂ labels on the cabinet

CONFIGURATION

NH₃ / CO₂ cascade

We manufacture ammonia and CO₂ cascade systems for industrial refrigeration. We integrate both circuits into a solution defined around the process and project conditions.

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