City-zen: Smart cooling

Featured image

Hot to cold, cold to hot

City-zen was an international consortium, a program stimulating learning-by-doing in Grenoble and Amsterdam between March 2014 and November 2019. The results can be found in a booklet or in detailed reports.



Smart Stories

Check the article about Smart Cooling in the blood bank featured in our online magazine 'Smart Stories':

What is the goal of the project?

City-zen partners blood bank Sanquin and water company Waternet join efforts to use cold from drinking water infrastructure for cooling.

During cold periods in winter the temperature of drinking water drops lower than desired. This creates an abundance of cold energy which can be extracted and either used directly in Sanquin’s pharmaceutical processes or stored in an underground storage facility (a so-called aquifer thermal energy storage: ATES).

What is the result of the project?

The annual energy yield for the first years is expected to be 20.000 gigajoule, which equals the annual power consumption of about 1.800 households. In the future this will grow towards 40.000 gigajoule a year. Sanquin will initially only use the extracted cold for its pharmaceutical processes but is looking into expanding the smart cooling system to more of its operations and buildings.

Additional benefit:
As a result of the cold extraction the temperature in the drinking water infrastructure rises slightly which means end-users need less energy to heat water. Win-win.

Who initiated the project and which organizations are involved?

Waternet (the water supplier for Amsterdam and surroundings) and Sanquin.