5
A change in any of these parameters can indicate a problem in your process. While measuring all of these parameters is not necessary
for normal operation, it is crucial for troubleshooting.
TIP: A typical ale cooling run will look something like this:
• Product inlet temperature: 180–212°F
• Product outlet temperature: 68–72°F
• Product flow rate: (depends on exchanger size, once measured it should remain consistent batch to batch)
• Cooling water inlet temperature 60–78°F
• Cooling water outlet temperature 160F–180°F
• Cooling flow rate: equal to product flow rate
• Chilled liquor inlet temperature 28–32°F
• Chilled outlet temperature: equal to product outlet temperature or slightly warmer
• Chilled liquor flow rate: as needed to set chilled liquor outlet temperature
Problem:
Cause:
Product outlet temperature is too high
• Product flow rate is too high
• Cooling water inlet temperature is too high
• Cooling water inlet flow rate is too low
• Chilled liquor inlet temperature is too high
• Chilled liquor inlet flow rate is too low
• Heat Exchanger is contaminated with debris
Cooling water outlet is too low and the
product outlet temperature is too high
Cooling water flow rate is too high
Chilled liquor outlet is too low and the
product outlet temperature is too high.
Chilled liquor flow rate is too high
Chilled liquor temperature increases
during the run
• Insufficient volume of chilled liquor in the process. The process will require the same
volume of chilled liquor as product.
• The returned chilled liquor is mixing with the tank. Return the chilled liquor with a tan-
gential port in a laminar flow to the top of the chilled liquor tank.
Operator Notes
Operation notes can document changes in the heat exchanger performance. Any performance loss can indicate a blockage in part of the
heat exchanger.
Items
Unit
Hot Side
Stage One
Stage Two
Notes
Media
Temperature at the entrance
F
Temperature at the exit
F
Flow
gph
Operating Pressure
PSI
Pressure drop permitted
PSI
Stage one Temperature
F
Stage one flow rate
gpm
Stage two temperature
F
Stage two flow rate
gpm
