Technical Information
4-3. When the object to be cooled is a gas or solid
This explains the cooling method when cooling gases or solids using cooling water.
The object to be cooled is gas
①Fan coil unit
One method for cooling gas with cooling water is to use a fan coil unit.
A fan coil unit is an air conditioner that houses a fan (blower) and coil (heat exchanger) in a single box. Cool air is generated and sent out by circulating cool water through the coil. As shown in Figure 1.2 below, there are types that are hung from the ceiling and types that are placed directly on the floor, and the type used depends on the purpose and facility layout. The main use is for air conditioning, but as will be described later, they can also be used to cool solid objects.
Figure 1. Ceiling-mounted type
Figure 2. Floor-standing type
Figure 3. Schematic diagram
②Air handling unit
An air handling unit has even better temperature stability than the fan coil unit in ①, and can more precisely control humidity and cleanliness. It is used for air conditioning in clean rooms and temperature and humidity control for precision measurement, analysis, and inspection equipment.
Figure 4. Air handling unit
Figure 5. Apiste precision air conditioner (TCU/ECU) PAU-AZ1800SE
The object to be cooled is solid
① Immerse in the tank
The object to be cooled is cooled by immersing it directly in the cooling water in the tank.
example)
・Water tank cooling for extrusion molding resin
・Cooling packed or pouched foods such as tofu and konjac
Figure 6. Extrusion molding cooling water tank
②Air cooling by fan coil unit
The fan coil unit blows out cold air to cool the workpiece. By using a chiller, the blowing temperature can be controlled, allowing for optimal cooling.
Figure 7. Workpiece cooling installation record using fan coil units
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