Case study
Frigosuisse
Frigosuisse deep-freeze warehouse in Switzerland
Key information
Client:
Frigosuisse
Supplier:
SSP Kälteplaner AG, Johnson Controls Systems & Service GmbH
Type of facility:
Two-stage refrigeration facilityDirect evaporation pumped ammonia system
System start-up:
2007
The refrigerated and frozen goods logistics company Frigosuisse supplemented its three existing deep-freeze warehouses in Möhlin, Switzerland with the addition of a fourth. To cool the new warehouse, the refrigeration specialists from the engineering firm SSP Kälteplaner AG designed a pumped ammonia system with Eco mode.
Requirements
The new building, which has a volume of approximately 65,000 m³, was to be fitted with an economic, environmentally friendly system to maintain a temperature of -28°C in the deep-freeze warehouse, and of -10°C in the adjacent automatic picking hall.
Solution
SSP Kälteplaner AG was commissioned to draft a refrigeration system to meet these requirements. The engineering firm designed a plant which uses ammonia in a direct evaporation, multiple circulation system. Johnson Controls installed the system, which is charged with 2,100 kg of ammonia and has a peak performance of 540 kW, on the ground.
Technical data
Cooling capacity:
540 kW
Refrigerant volume:
2,100 kg
Main components:
Screw compressor, evaporative condenser, separator, economizer, ammonia pumps and air coolers
Special features:
A so-called “cold pool” is formed due to the vertical distribution of the cold air by the air coolers.
