Case study
Slaughterhouse in Sweden
Efficient, environmentally friendly solution for refrigeration and deep-freezing
Key information
Client:
Slaughterhouse
Supplier:
Ingemar Johansson Ingeniörbyrå AB / Alfa Laval AB
Type of facility:
Central system
System start-up:
1992
A Swedish slaughterhouse operates numerous refrigeration and freezing rooms for producing and storing its sausage and meat products. Its ammonia-based refrigeration plant was built by Alfa Laval.
Requirements
The slaughterhouse was looking for an efficient, environmentally friendly solution for its various refrigeration and deep-freezing needs.
Solution
The engineering firm designed an economical ammonia system with a refrigeration output of 4,000 kW. As the ammonia cools the production and storage rooms, a temperature of approx. 70°C is generated on the heat producing side. This waste heat is used by desuperheaters, liquefiers and heat pumps to warm up heating-circuit and service water up to 67°C in several steps. The 800-kW heat pumps are connected directly to the refrigeration cycle with ammonia plate heat exchangers, thereby additionally enhancing the system’s efficiency.
Technical data
Cooling capacity:
4,000 kW
Refrigerant volume:
35 t
Secondary refrigerant:
Temper
Main components:
Desuperheaters, heat pumps, liquefiers
Special features:
By putting the waste heat to use, the slaughterhouse can save roughly 1,400 m³ of heating oil a year.
