Quote Originally Posted by r.bartlett View Post
great so walk me through the process. What happens inside the freezer when an excess load is introduced?
Really? ok, refrigerant is introduced into the evaporator in the freezer. This refrigerant would normally absorb the heat of the product and flash off, carrying with it the heat removed from the product. If excessive load were to be introduced, the refrigerant flowing through the evaporator must absorb more heat, up to the system's maximum design refrigeration capacity. In order to bring the temps down to the desired setpoint, the refrigerant will continue to absorb heat. If there is more load, there is more heat that must be transferred. The system can only work up to its capacity limits, so it will take longer to remove the heat in the freezer.

In my own refrigeration plant, I can tell if a blast freezer has 10 racks of product or 40 racks, by looking at the length of time the system took to go through its freeze cycle.