Definitions

Air Coolers

Unit Air Cooler (HFC, CO2)
A refrigeration system component transferring heat from air to a refrigerant or liquid consisting of one or more fans and a coil with refrigerant distributing and collecting headers. 
Standard capacity 
Cooling capacity for standard temperature conditions (dry conditions). 
Nominal capacity 
Standard capacity multiplied by a fixed ratio (wet conditions). 
Fan power 
The electric power absorbed by the fan motor

Air Cooled Condensers and CO2 Gas coolers

Forced convection air cooled refrigerant condenser 
A refrigeration system component that condenses refrigerant vapour by rejecting heat to air mechanically circulated by fans 
Range 
Listing of models with some common features 
Standard capacity 
Total heat flow rejected by the refrigerant at standard temperature conditions 
Fan power 
Electric power absorbed by the fan motors 
Air flow rate 
Air flow with dry and clean air 
A-weighted sound power level 
Sound power generated by the condenser expressed in decibels and weighted in accordance with standardized procedures 
Energy ratio
The certified nominal capacity in kW divided by the total certified power input of the fan motors in kW at the standard rating condition.

Dry Coolers

Forced Convection Liquid Coolers 
A refrigeration system component that cools liquid by rejecting heat to air mechanically circulated by fans 
Range 
Listing of models with some common features. 
Standard capacity 
Total heat flow rejected by the liquid at standard temperate conditions 
Fan power 
Electric power absorbed by the fan motors 
Air flow rate 
Air flow with dry and clean air 
A- weighted sound power level 
Sound power generated by the dry cooler expressed in decibels and weighted in accordance with standardized procedures. 

Certified characteristics

Air Coolers

The following performances of Air Coolers are certified :

• Standard capacity
• Fan power
• Air flow rate

Air Cooled Condensers and CO2 Gas coolers

The following performances of Forced Convection Air Cooled Refrigerant Condenser are certified:

• Standard capacity
• Fan power input
• Energy class
• Air flow rate
• A-weighted sound power level

 Dry Coolers

The following performances of Forced Convection Liquid Coolers are certified:

• Standard capacity
• Fan power input
• Energy class
• Air flow rate
• Liquid side pressure drop
• A-weighted sound power level