How is the evaporator selected for ready meal production?

The evaporator is selected based on the actual freezing duty of the ready meal line, not just the freezer room size.

For ready meal production, the first step is to define the product conditions: what kind of meal is being frozen, its entry temperature, target core temperature, package or tray size, product weight, and how many kilograms or trays must be processed per hour or per batch. These factors determine how much heat must be removed and how quickly it has to be done.

Then the evaporator is matched to the process conditions, especially the room temperature, evaporating temperature, required freezing time, and airflow pattern. Ready meals often need fast and even freezing, so the evaporator must provide enough capacity and strong, well-distributed airflow to avoid uneven product temperature across the racks or trolley positions.

Fin spacing is also important. In blast freezing, frost forms quickly, so the coil should have a fin pitch suitable for low-temperature operation. If the fins are too close, airflow drops too fast and performance suffers. The defrost method must also be considered, since frequent production cycles need stable performance between defrosts.

In food factories, hygiene matters as much as capacity. The evaporator should suit the plant’s cleaning standard, material requirements, corrosion conditions, and drainage design. In many ready meal projects, stainless steel casing, cleanable surfaces, and a layout that supports washdown are preferred.

So in practical terms, the right evaporator is chosen by balancing capacity, airflow, frost behavior, hygiene design, refrigerant type, and production throughput, so the freezer can meet both product quality and line efficiency requirements.