Is the temperature existing at the discharge port of the compressor.
Water-cooling can ensure that the compressor discharge temperatures are maintained in the system’s comfort zone.
It is advisable that in a general industry, the compressor discharge temperature is below 120°F (49°C) as this is generally the maximum inlet temperature a dryer can handle; and even than anything over 100°F (38°C), can seriously derate the dryer (meaning it won’t be able to dry the same amount of air as per data sheet).
Though the discharge temperature is high, the excessive high discharge temperature could be due to: