Case study
Stuttgart Airport
Custom air-conditioning system using natural refrigerants for the construction of Terminal 3
Key information
Client:
Stuttgart Airport
Supplier:
Grasso GmbH
Type of facility:
2 NH3 liquid chillers
System start-up:
2003
With 400 take-offs and landings a day, Stuttgart Airport is an important hub in Germany's southwest. To cope with increasing passenger growth, the airport is adding a new terminal. Grasso provided a customised air-conditioning system using natural refrigerants for the new construction of Terminal 3.
Requirement
The secondary refrigerant is to be cooled with two different set points per liquid chiller unit depending on the operation mode of the plant.
Solution
Two liquid chillers with a combined output of 2,300 kW are used. Special condensers can achieve temperature differences of 1 degree Celsius.
Technical data
Cooling capacity:
1 x 800 kW
Secondary refrigerant:
20 % ethylene glycol
Special features:
Ice bank-operated; in addition, the new liquid chillers are hydraulically linked to the older terminal's facilities
