-35C to -40C Blast Freezer
-35C to -40C blast freezer rooms are used when products must pass through the critical freezing stage quickly. Compared with a storage freezer, the blast freezer is sized around batch load, air velocity and required core-temperature pull-down time.
Fast freezing for product quality and production rhythm
Blast freezing is selected for seafood, meat, poultry, bakery products, prepared meals and other foods where slow freezing can damage texture, increase drip loss or slow the packing line. A correct design connects the room size, evaporator air throw, batch weight, product thickness and loading trolley arrangement into one cooling plan.
From surface freeze to core temperature
The quotation should define the target core temperature and time, not only the air temperature inside the room.
Cold air must reach every layer
Evaporator placement and trolley spacing are designed to prevent warm pockets inside dense batches.
Match freezing time to production output
Daily capacity depends on how many batches the room completes per day, including loading and unloading time.
Components selected for heavy duty
Fans, coils, drain pan heaters, doors and controls must be suitable for harsh low-temperature operation.
Project image details
How blast freezer sizing is reviewed
| Input | Engineering impact |
|---|---|
| Batch weight | Defines the refrigeration load and required evaporator capacity for each freezing cycle. |
| Product thickness | Thicker meat or fish blocks require longer freezing time than small packaged portions. |
| Packaging | Cartons, trays and plastic bags change airflow contact and freezing speed. |
| Cycle target | The same room size can require different equipment when the target changes from 8 hours to 4 hours. |
Information needed for an accurate offer
- Product name, shape, average thickness and packaging method
- Batch weight per loading and number of batches per day
- Initial product temperature and required final core temperature
- Trolley, rack, tray or carton arrangement inside the room
- Ambient temperature, site power and preferred refrigerant system route
Need a blast freezer matched to your batch cycle?
Send the product, loading weight and freezing-time target. AIM Refrigeration will review the room, evaporator and compressor selection together.
