Heat Exchangers
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