Falling Film Chillers

A falling film chiller is a type of heat exchanger used for cooling liquids. Here’s a description:
A falling film chiller consists of a series of vertically arranged tubes or plates through which a liquid flows downward as a thin film. The liquid to be cooled enters the top of the chiller and is distributed evenly across the top of these tubes or plates. As it flows downward due to gravity, it forms a thin film along the surface of the tubes or plates.
Simultaneously, a coolant, often chilled water or a refrigerant, flows through the interior of these tubes or plates in the opposite direction. Heat is transferred from the liquid flowing downward (the process fluid) to the coolant flowing inside the tubes or plates, thereby cooling the process fluid.
The design of falling film chillers allows for efficient heat transfer due to the large surface area available for contact between the process fluid and the coolant. They are commonly used in various industrial applications where precise temperature control of liquids is required, such as in food processing, chemical manufacturing, and HVAC systems.