Rueil Malmaison Central Kitchen (France)

Lower investment and high running cost savings

The Rueil Malmaison Central Kitchen Installation

 The Rueil Malmaison Central Kitchen is a new modern kitchen using the latest technologies for producing dishes and for managing the whole production process. It supplies 12 000 meals daily to schools in Rueil Malmaison (Parisian suburbs).
To respect food hygienic standards the meals are rapidly cooled leading to high cooling peaks during a relatively short time.
During the design stage, it clearly appeared that the use of the STL had the potential to reduce the capital cost compared to a classical installation without storage.     

The STL was then sized to shave more than 80% of the peak demand. In addition, the STL permits efficient energy management with a very high reliability and important savings on operating costs.

Technical Data

Daily Cooling Energy Consumption : 440 kWh
Maximum Cooling Demand : 139 kW at 1/7°C
Energy Stored : 440 kWh
Storage Temperature : -10.4°C
Store Type : STL-N10-10
Nodules Type : SN.10
Number of Tanks : 1
Tank Diameter : 1.6 m
Tank Length : 5.2 m

Characteristics

The cooking is done in autoclaves, cooking pots or streaming water systems (type steryflow) at temperatures between 65 °C and 95°C.
The meals are packed in small baskets under vacuum. An initial cooling down to 20°C is achieved with waste water, then a second cooling down to 2°C is achieved with the STL. The meals are then stored in the cold rooms.
To respect food hygienic standards the meals must be rapidly cooled. This introduces high peaks into the cooling profile. The STL is the right solution for shaving these peaks.

Technical Advantages

Smaller chiller capacity
Smaller heat rejection plant
Flexible system available for efficient energy management
Servicing simplified
Back up at disposal

Projects Credits

Customer: Sogeres
Consultant: Habert
Installing Company: Climatelec

 

 

 

 

 

CRISTOPIA's STL:
the technology at the forefront of the
Thermal Energy Storage Systems

Financial Advantages

The solution with STL costs less than the classical system with chillers
Saving on :

  • Operating costs (demand charge and off peak consumption)

  • Efficiency

  • Life of plant

  • Maintenance

Environmental Advantages

Use of refrigerant reduced (ozone layer protection)
Emission of CO2, SO2 and N2O reduced due to off peak consumption (greenhouse effect)
Primary fuel consumption of generator power plant reduced