Integrating ice storage in a Paris cooling network, one of the largest in the world, will improve its performance by reducing its electricity consumption and increasing its cooling capacity.
The district cooling network (which serves buildings including the Louvre and Les Halles) was recently completed with 4 ice storage tanks of 200 m3 with a total cooling capacity of 30 MWh.
Ice storage provides two advantages:
decreasing the network temperature when necessary, achieving a higher cooling power with the same flow rate in the existing piping;
buffering the cooling demand between peak hours (during the day, with higher electricity prices) and off-peak hours (at night, with lower electricity prices).
District cooling represents an economical and energy efficient way of providing the cooling demand of commercial buildings. HFC-134a is the most efficient fluid for large district cooling compression refrigeration systems.
District cooling is implemented in an increasing number of cities in Europe: Amsterdam, Barcelona, Berlin, Helsinki, Oslo, Paris, Stockholm, and more recently Linz, Vienna, Munich among others.